Introduction

The need to better understand the factors and processes that influence investment decisions has led to a greater investigation into the investment decision-making process (Kengatharan and Kengatharan, 2014; Chaudary, 2019). Numerous principles and theories assist traditional finance asserting that markets are efficient and systematic; these include “the Markowitz portfolio theory”, “the Miller and Modigliani arbitrage theory”, “the CAPM model of Sharpe, Linter & Black”, and “the option pricing theory of Black, Scholes and Merton” (Merton, 1985; Zain-ul-Abdin et al., 2019). The assumption that becomes the founding pillar for the efficient market hypothesis (EMH) is that investors are rational and the estimation of financial asset prices includes the incorporation of all the available information (Fama, 1970; Weixiang et al., 2022). The efficient utility theory (EUH) states that investors face the challenge of choosing among various alternatives amidst a world crowded with uncertainties during decision-making, and investors make rational judgements by weighing all available options according to their benefits and the risks they pose. Thus, they make balanced decisions (Kumar and Goyal, 2015; Jain et al., 2022).

The “Prospect theory,” which exhibits conflicting outcomes with EMH and EUH, was brought to the public’s notice by the investigations conducted by Kahneman and Tversky (1979). The theory questioned the idea of rationality and fundamentally altered how investment decision-making was studied. The economists Meir Statman, Richard Thaler, Hersh Shefrin, David Bell, Robert Shiller, and others continued this path-breaking research finding. Thus, how do investors behave? Furthermore, why do they behave in a particular manner? To answer these questions, a new concept of behavioural finance emerged in 1980. Behavioural finance discusses the irrationality in decision-making and the psychological elements driving it. The investor’s decision usually deviates from rationality and leans toward irrationality due to behavioural biases (Baker and Ricciardi, 2015; Kumar and Goyal, 2015). Behavioural bias is an inclination towards error (Shefrin and Statman, 1985). Amidst this ongoing debate between rational and irrational decision-making, Lo (2012) suggested that investor behaviour is not hard-lined towards either side of rationality but is a situational adaptive behaviour where investors behave more rationally during stable market conditions and tend to become irrational during turbulent or volatile market condition (Apau and Jeke, 2022; Muzindutsi et al., 2023).

Various behavioural biases influence investors when making investment decisions (Dervishaj, 2021; Mittal, 2022; Bihari et al., 2023; Sinha and Shunmugasundaram, 2023). The commonly discussed biases in different investment avenues, i.e., Stock market, mutual fund, and real estate investments, are overconfidence, disposition effect, anchoring bias, availability bias, loss aversion, regret aversion, herding, representativeness, mental accounting, etc. While the research has mainly focused on stock markets, studies on behavioural biases have substantially improved our understanding of investor actions in financial markets. In this area of research, real estate investing needs to receive more attention. Investment in real estate is the most significant financial transaction undertaken by the average household (Beracha and Wintoki, 2013; Seay et al., 2018; D’Lima and Schultz, 2021). Despite several studies demonstrating an integrated relationship between real estate and stock returns, real estate markets differ in liquidity, transparency, and regional heterogeneity (Bao et al., 2021; van Dijk et al., 2022). The key difference between investment avenues, like the stock market or mutual funds, and real estate is that while the former avenues are available over the counter in a well-defined systematic market, the latter is more of an unorganized market where people invest in purchases and sales on personal levels and not on any systematic trading platform. Real estate frequently displays behaviour difficult for typical asset market models to account for (Engelhardt, 2003; Beracha and Skiba, 2014). For instance, they show sharp price fluctuations (Li and Wan, 2021). Buyers frequently offer varying prices for properties that are almost identical, which may be due to information asymmetries in real estate markets (Zhou et al., 2015). This information asymmetry and difficulty in getting systematic data easily may have caused reduced interest by researchers in studying this field. The data from stock markets are quickly and transparently available due to a systematic market worldwide. This transparency is lacking in the real estate sector (Schulte et al., 2005; Newell, 2016). Also, the data is not readily available, which naturally deflects the researchers as data availability is a significant issue while performing research (Krause and Lipscomb, 2016). Such issues cause less interest by researchers in this area of study.

In real estate literature, few studies have focused on behavioural anomalies (Arbel et al., 2014). Despite this transaction’s high stakes and deliberate nature, prior research has yet to offer conclusive answers. Understanding how real estate investors behave is essential because real estate is becoming a more popular asset class in portfolios (Kumar and Vergara-Alert, 2020). The recent trends show that the Indian real estate sector is set to grow at a tremendous rate according to a report by India Investment Grid (IIG). With the increasing popularity of easy investment vehicles like REITs, this sector will require a thorough understanding which provides motivation for this study. This study aims to delve into one of the crucial facets of behavioural research: behavioural biases that influence individual decision-making in real estate investment. This study is unique in the manner that no study exists to the best of the authors’ awareness that reviews existing research regarding the investment behaviour of real estate investors. This paper looks forward to compile and examine the existing research works that study behavioural biases in the real estate sector to provide a concise summary and address the following research questions:

RQ1: What are the study trends in behavioural biases in real estate investing in terms of year of study, sample country, journal of publication, statistical approach, data type, and the number of papers on a particular bias?

RQ2: What does content analysis reveal about the knowledge imparted by previous research works for different behavioural biases?

RQ3: What research gaps are still present and possible future research agenda in the context of behavioural biases in the real estate investment sector?

The flow of the paper is as follows: The paper begins with “Introduction” which introduces the work. In this, Fig. 1 represents the pictorial presentation of how this paper has been organized. Section “A prelude to behavioural biases in real estate investment” briefly talks about different behavioural biases that exists in real estate investment. Up next, “Research method: literature search approach” illustrates the research methodology adopted. In the section “Literature review: classification and analysis of the literature”, the articles are reviewed and analysed, after which, “Content analysis” section discusses each bias in detail. The section “Results and discussion” discusses the findings. In the end, “Conclusion and future scope” concludes the present literature review and gives the future research agenda.

Fig. 1: Flow diagram (authors’ compilation).
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This figure shows the pictorial presentation of how the paper has been organized into various sections.

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A prelude to behavioural biases in real estate investment

The term “behavioural bias” describes a pattern of judgmental variation that occurs in particular settings and can occasionally lead to perception alteration, inaccurate judgements, illogical interpretation, or irrationality. Biases are the inclination towards error (Shefrin and Statman, 1985). Going by the definition in the dictionary, biases, and flawed cognitive reasoning and thinking draw similarities; nevertheless, it is more accurate to say that they are caused by poor reasoning influenced by feelings or emotions. Understanding the effect of behavioural biases on investment decisions is essential. With its understanding, investors and their advisors may be better equipped to achieve their objectives and enhance economic outcomes. Timely recognition of behavioural biases can help in avoiding potential financial disasters.

A variety of behavioural biases influence investors while they make investment decisions. The lack of information or inability to interpret it gives rise to several biases. Overconfidence is a cognitive bias propagated by Odean et al. (1998). In the presence of this bias, people tend to exaggerate their skills, knowledge, and predictions while downplaying the possibilities of future uncertainties (De Bondt and Thaler, 1995). Overconfident people feel their judgement is more trustworthy than others (Jain et al., 2015). Under the influence of the representativeness heuristic, investors try to associate the past performance or information of a certain market condition or firm with the general notion that the same outcome will happen in the future. In the event of a lack of information, our brain often tries to complete the mental illustration by combining prior knowledge and thinking to deduce the probability of a certain outcome. E.g., when purchasing a home, buyers frequently assess the risk of the property and the potential return on their investment by comparing the price to that of comparable homes in the area (Kahneman and Tversky, 1979). Similar to this bias, investors also suffer from Gambler’s fallacy. It is also known as the Monte Carlo fallacy. It occurs when someone mistakenly thinks that the outcome of a prior event or series of events will determine how probable an upcoming random event is to occur (Malik et al., 2021). When investors cannot deduce logical reasoning from the market information, they tend to show herding bias. Like sheep walking in herds, investors often blindly follow what other or larger groups of investors are doing without applying logical deduction of those activities (Kahneman and Tversky, 1979). It has been noted that investors who suffer from this prejudice frequently consult brokers, friends, and co-workers before making an investment decision. Apart from the information itself and its deduction, the timeline of the information availability and the theme of presenting that information is also important. In availability bias, decision-makers favour the most recent information and events they can access rather than considering other options (Cascão et al., 2023). According to framing bias, biased information presentation might alter the investor’s opinions. Investors avoid risk when information is presented positively to ensure profits. However, they will accept the risk to prevent losses when the same information is presented in a negative frame. Lastly, people also tend to make irrational decisions due to mental accounting bias, where they categorize money differently based on subjective standards, frequently prompting illogical spending and financially unwise investment choices (Thaler, 1985; Enslin et al., 2022).

Humans tend to perceive profits and losses differently. This anomaly gives rise to three behavioural biases: disposition effect, loss aversion and regret aversion. When deciding whether to sell or keep an investment, losing investments are often held onto too long by investors. Rather than holding profitable securities for long periods of time, they often dispose of them prematurely. This is known as the disposition effect (Basana and Tarigan, 2022). According to Shefrin and Statman (1985) winning stocks should be sold, and losing stocks should be retained. Loss aversion was coined by Benartzi and Thaler (2000). It occurs because people react differently to guaranteed profits and guaranteed losses. People prefer not to take risks when there is a guarantee of profit, but they are willing to take risks if there is a potential of losing. This demonstrates that they value loss certainty more than loss uncertainty. According to the idea of regret aversion, when people regret a choice, it has a bigger impact on subsequent decisions. As a result, investors are either encouraged to take more risks or discouraged from making risky investing decisions. This is done to avert any feelings of regret further (M. J. Seiler et al., 2008).

Reluctance to change or relying stubbornly on some information that has been previously received also causes behavioural biases. Anchoring bias is one such bias where investors tend to base their decisions on an illogical price, which is sometimes meaningless. Because of this bias, investors frequently set prices based on previous knowledge of purchasing and selling. This leads to mistiming of the market and results in investors buying or selling securities at exorbitant prices. Investors may also miss out on profits if they fail to meet the price they set to buy or sell securities (Northcraft and Neale, 1987). Investors often get affirmation about their decision by seeking information or evidence that supports or confirms it, often from their peer group or friends. This tendency gives rise to confirmation bias (Gallimore, 1996).

Investors also tend to favour what is known to them while attempting to shun the unknown under the familiarity bias (Seiler et al., 2013; Ambrose and Shen, 2023). To this, the endowment effect was coined by Kahneman et al. (1990). People place too much attention on their current beliefs and are unwilling to modify them. Due to this, they pass up even the most lucrative investment prospects. Investors also tend to prefer investing in securities of domestic countries rather than diversifying it with foreign investments. This is known as home bias (French and Poterba, 1991; Lin and Viswanathan, 2016; Riff and Yagil, 2016; Coën et al., 2021).

Research method: literature search approach

The author has systematically reviewed the literature to analyse the articles published on behavioural bias in real estate investment. Systematic literature review (hereafter, SLR) is regarded as the most illuminating and scientific compared to other reviews (Snyder, 2019; Paul et al., 2021). SLR attempts to address a research question, typically regarding the state of a certain field of study (Kraus et al., 2020; Muthuri et al., 2020). Another significant aspect of SLR is that it provides solutions to queries that may mislead the findings if only one study is considered (Petticrew and Roberts, 2008).

The studies in behavioural finance were initiated in the year 1980. To ensure proper inclusion of the behavioural finance literature, the paper solely focuses on the studies conducted between 1980 and 2022, which have studied one or multiple biases in their paper. The literature was drawn from two leading databases, “Scopus” and “Web of Science”, thereby enabling the analysis of high-quality studies in concerned areas.

The “Preferred Reporting Items for Systematic Reviews and Meta-Analyses” (PRISMA) criteria, which called for the use of keywords to search for pertinent works in the database, were used in the systematic review procedure (Liberati et al., 2009; Li et al., 2022). The keywords were chosen after carefully examining previous articles. The keywords were searched on both the database on October 12, 2022.

Initially, 16,991 papers were identified relating to keywords searched in the above-mentioned databases. The search criteria entered to limit the literature search in the field: (“Overconfidence” OR “Loss aversion” OR “Regret aversion” OR “Herding” OR “Psychological bias” OR “Cognitive bias” OR “Emotional bias” OR “Representativeness” OR “Anchoring” OR “Mental accounting” OR “Disposition”) AND (“Real Estate” OR “Housing” OR “Property”). Further, we considered the following criteria for the inclusion of the article in our study:

  • Articles having the search keywords in the article title, abstract and keywords.

  • Subject: Economics, econometrics and finance; Business, management and accounting; social sciences in Scopus. Management; business; business finance, economics in web of science.

  • Document type: Article

  • Articles published in English language only.

Taking these criteria into account, 15,734 papers were excluded through the database search, and 125 duplicate papers were eliminated. Less adequacy of titles and abstracts resulted in the exclusion of 727 and 312 articles, respectively. This resulted in 93 papers being available for full-text analysis, of which 5 papers did not have full-text availability, and 2 papers did not relate to the theme of the study and hence were excluded. Therefore, the final sample counted 86 most relevant articles for the study. The flow chart for the review of the article following the PRISMA framework is given in Fig. 2.

Fig. 2: PRISMA framework (authors’ compilation).
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This figure illustrates the PRISMA framework adopted in the study. It shows the count of articles taken up at every stage along with the exclusion criteria and number of excluded articles.

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Literature review: classification and analysis of the literature

A total of 86 research papers were examined and categorized based on the year of publication, country of study, source of data collection, statistical techniques used, and citation analysis. This section presents the results of the reviewed literature.

Year of publication

Figure 3 (Table 1 in annexure) represents the distribution of the articles published from 1980 to 2022, according to chronological order, with each year being further divided according to the behavioural biases studied in those years. Studies on behavioural bias in real estate started in 1987, and in recent years studies on this topic have gained momentum. An interesting takeaway from the distribution of articles over time is that the number of articles jumped significantly post-2010. On deeper analysis, it was observed that around 50% of the studies after 2010 were from the USA. This can be attributed to the fact that the housing market crash that occurred in 2008 caused a severe economic recession, and thus it could have led the researchers to delve into the arena of real estate investment so that a better understanding can be offered to minimize such risks in future (Crosby et al., 2018). The recent development in the general sentiment of people investing in assets and buying real estate as a means of investment can be seen from the growth in the number of studies. This investment interest, in general, drives the need for a deeper analysis of this avenue. Also, the availability of information for conducting studies has become more accessible due to digital platforms and databases. The graph further shows the distribution of studies according to biases year-wise. This demonstrates that anchoring bias has always been a priority almost every year. Loss aversion has been studied a lot in recent years. Other biases have slowly gained momentum, showing a vast area that still needs to be explored.

Fig. 3: Article distribution according to year of publication.
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It shows the distribution of articles over the period of 1980–2022. It also highlights the number of articles corresponding to different biases for a particular year.

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Journal of publication

This analysis identifies the key journals and publications in this area. Figure 4 (Table 2 in annexure) shows 86 research papers were collected from 45 journals. Out of these, 15 journals had two or more than two publications. Further, it is interesting to note that, Journal of Real Estate Finance and Economics, Journal of Property Research, Real Estate Economics, International Journal of Housing Markets and Analysis and, Journal of Real Estate Research published 32 papers on biases in real estate investment. Journal of Real Estate Finance and Economics emerges as the highest publisher with 9 papers, followed by Journal of Property Research with 7 papers.

Fig. 4: Articles distribution by journal of publication.
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The analysis shown through this figure highlights the key journals in the field of behavioural biases and the number of articles in those journals.

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Country of study

Figure 5 (Table 3 in annexure) shows the bifurcation of articles based on the country where the authors have collected the data or chosen the geographic domain for the studies. The visualization shows that developed countries like the USA and the UK have been the primary locations for most studies. On the other hand, developing countries have been targeted less, resulting in fewer studies. The primary reason for such an anomalous distribution of study is that in developed countries, real estate transaction records are readily available in the public domain, and most transactions are institutional, resulting in more accessible data collection. Moreover, the large number of such transactions results in an abundance of information for statistical analysis. In developing countries like India, most real estate transactions are on a personal level, with agents working independently, resulting in less publicly available information. Another possible factor is a more generalized one regarding research works. The developed countries have much more funding availability and understanding of the long-term effects of proper research work in these sectors. Developing or low-income countries have a comparative shortage of funds for research and other glaring issues to deal with rather than understanding the long-term benefits of research. This causes an abundance of fruitful research in developed countries while shortage in their counterpart countries.

Fig. 5: Frequency distribution based on country of data collection.
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The figure shows how the articles are divided based on the country where the authors have collected the data or have chosen the geographical domain for their study.

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Type of data used

Analysis of the literature on the type of data helps us identify the focus of past research. Figure 6 (Table 4 in the annexure) shows the distribution of the study according to the type of data collected for each bias. Out of 86 studied papers, some articles discussed multiple biases, which made an addition to the primary and secondary list. This table shows that while anchoring bias has a healthy distribution between primary and secondary data, most of the other biases either have more primary and less secondary data-based articles or vice versa. We see that herding and loss aversion have a large number of secondary data-based articles and very less studies have used primary data. The importance of primary data-based articles is that they take the real opinions of the target population and hence are closer to real-life scenarios while secondary data-based articles are necessary to test the models and hypotheses on a large sample size to prove the robustness.

Fig. 6: Articles distribution by type of data.
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The figure illustrates the distribution of articles based on the type of data used (primary or secondary).

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Statistical techniques

This section explores the bifurcation of the studied articles according to the statistical technique employed in them. This exploration is essential in showcasing this avenue’s most sought-after and expansively used method. Figure 7 (Table 5 in annexure) shows the number of articles for various statistical techniques found in the studies and highlights that Regression analysis has been used most times (23 out of 86 selected papers). Different types of regression, such as logit regression, probit regression, linear regression, ordinary least squares, and multiple regression, were used. Only some studies have used multiple techniques such as correlation, chi-square, factor analysis, etc. Articles were not excluded or accepted based on statistical technique; however, during analysis, it was found that only three relevant articles were based on qualitative techniques, and the rest were based on quantitative techniques.

Fig. 7: Frequency of statistical techniques used in the study.
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The figure illustrates the different statistical techniques used by the researchers to study behavioural biases.

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Figure 8 shows the distribution of biases according to the statistical techniques used in the articles. For almost all biases, the majority of the studies are regression-based. Regression is preferred in predictor-outcome-based model studies due to its simplicity in application and numerous statistical software providing easy regression analysis ranging from MS Excel to IBM SPSS (Fumo and Rafe Biswas, 2015). The studies have used multiple linear regression with more than one predictor variable. The regression models give easy access to isolate those predictors that cause problems to the model and find a mathematical relationship that can be used in future works (Rencher, 2005). They are also well-proven for hypothesis testing, which gives insights into whether or not what a researcher thinks is correct (Goldstein et al., 1979). We can see that more rigorous techniques like SEM are used in a minimal number of articles, and fewer articles have used unique methods like IRT or vector auto-regression.

Fig. 8: Article distribution according to bias and statistical technique used.
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The figure illustrates the distribution of articles according to the bias studied and the statistical technique used in them.

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Another interesting thing to note from this analysis is that articles on qualitative methods are much fewer. As explained in the work of Rust et al. (2017), there is a widespread misbelief that quantitative analysis is more critical due to clear statistical outcomes than qualitative methods. Qualitative methods are essential because they help in gaining a deeper understanding of the theories involved in some particular area of research so that we are well prepared before applying statistical techniques (Gutmann, 2014). Ignoring the qualitative approach is like ignoring the theory classes before going for practical. While the quantitative approach works towards establishing the robustness and validity of the model, qualitative methods help in establishing the credibility and logic of the model. We can thus infer that there is a need to focus more on theory development and qualitative work with regard to biases so that a balance between validity and credibility is achieved (Rust and Hughes, 2018).

Identified biases vs. number of papers

Behavioural biases have been examined in this section through the research findings of the chosen papers. Figure 9 (Table 6 in annexure) shows that 37 papers are available on anchoring bias, 24 on loss aversion, 18 on herding, and 11 on overconfidence bias. However, a dearth of studies on the home bias, familiarity, framing, endowment effect, and disposition effect in the real estate context gives an inconclusive finding.

Fig. 9: Identified biases vs. number of articles.
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The figure shows the number of identified articles talking about a particular bias.

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Citation analysis

In this section, we assessed various articles according to their citations for different biases to find the most pertinent and significant papers available. The citation was located using Google Scholar. We identified that 80 of the 86 selected articles are cited elsewhere. This confirms the reviewed article’s validity, suggesting that other researchers have deemed their work useful. We did not find any citations for 6 articles published recently. Table 7 (in the annexure) shows the articles on various biases with their citation counts. The authors have included only papers with more than 25 citations to avoid a long list of articles.

Content analysis

A research method for the objective, methodical, and quantitative description of communications’ manifest content is called content analysis (Burns and Berelson, 1952). The empirical results of earlier research investigations are disclosed using content analysis. In this section, the authors have systematically done the content analysis of different behavioural biases identified in the real estate investment literature. The biases having <5 papers are studied collectively under the “Other biases”.

Anchoring bias

Anchoring bias is a cognitive bias present in the real estate sector (Bao et al., 2021; Diaz et al., 1999) where people hold on to a reference point in the form of some information about the investment and act biased due to it (Yan and Bao, 2018). The initial listing price has been considered an important anchor where investors judge a property value based on the asking price first quotes. Such biasing is not only present with a novice like students (Silva et al., 2019) but also with seasoned professionals (Northcraft and Neale, 1987) and property fund managers (Lowies et al., 2016). Such asking price is also used to judge the property value and arrive at a price; however, anchoring barricades buyers to arrive at a fair price (Bao and Saunders, 2021; Bokhari and Geltner, 2011; Bucchianeri and Minson, 2013). Also, such anchors affect the decision-making of real estate investors (Chang et al., 2016; Hoxha and Hasani, 2022; Pandey and Jessica, 2018; Waweru et al., 2014) and negotiations that play in the transaction (Black and Diaz, 1996). Such negotiations are affected by round numbers, i.e., prices ending with more zeros. Buyers tend to form an anchor around a round number (Pope et al., 2015). The effect is persistent when buyers consider the previous purchase price as an anchor (Leung and Tsang, 2013b). This anchor around the previous purchase price is also evident when owners have a property whose current value is less than the purchase price, causing them not to list the property and hold on to it (Lane et al., 2011). Along with the previous purchase price, sellers sometimes want to achieve break-even and thus form an anchor around it (Seiler et al., 2012). Also, this anchoring bias affects risk perception, which in turn affects the investor’s decision-making (Zhang et al., 2022).

Apart from pricing, other factors like age, annual income, gender, and information accessibility have been studied in relation to anchoring bias. Younger people have been identified to show higher levels of anchoring bias along with lower-income earning groups. Women also tend to offer more anchoring bias than men (M. J. Seiler et al., 2008; Hjalmarsson and Österholm, 2021). The availability of information on property value plays an essential role in decision-making. Buyers tend to form anchors when they get information or reference points; sellers can use this tendency to mould buyers in their favour (Paraschiv and Chenavaz, 2011). Investors with price uncertainty are thus more likely to fall prey to anchoring bias (Chang et al., 2016). Searching the internet prolifically can also cause investors to rely deeply on information received and form and anchor around it (Beracha and Wintoki, 2013). However, investors also sometimes tend to anchor around previously or easily available information (Cascão et al., 2023). Sellers also seem to consider local fundamentals during the first sale and anchor the initial price in accordance with it (Clapp et al., 2020).

The research by Cheung et al. (2022) revealed that the capital value (hereafter, CV) evaluation in pricing provided by governments in several nations has some influence on the transaction price (TP). For used properties, TP and CV demonstrated a bi-directional, lead-lag connection. Moreover, the study by Ali et al., (2020) and Klamer et al. (2017) showcased that property evaluators suffer from anchoring bias, and tend to form their anchor around the previously transacted price. The impact of these government laws and initiatives on the time required to accept such offers was examined, and it was discovered that if sellers and agents effectively utilize them, the time needed to finalize deals is reduced (Arbel et al., 2014). However, Diaz and Hansz (2001) claim that as long as the appraisers are working in a field, they are comfortable with, an anchor (anonymous expert value) does not affect real estate valuations. However, when appraisers value the property in unfamiliar geographical areas, anonymous expert opinion affects their valuation (Diaz and Hansz, 2001). Sometimes, the clients and customers have thinking about the price or value of a property and thus the evaluators get under pressure forming an anchor around that price. Thus the customer influence also causes anchoring bias (Lee et al., 2022; Nwuba et al., 2015).

Researchers have also examined the property location as a factor for anchoring bias. They postulated that the distance of the property from the buyer’s location may significantly impact the price paid and thus support the anchor in the form of location (Clauretie and Thistle, 2007). Buyers who look into a property far away from them have to spend considerable time looking for information and rely on secondary sources since they are not present in that geographic area. This search constraint resulted in paying higher prices than local buyers (Lambson et al., 2004). This evidence is further strengthened by an expansive study by Ling et al., (2018) who used a large sample of 114,588 sales transactions to see this effect. Differentiating the benefits that local buyers get over distant buyers, it is seen that local buyers have an advantage of easily available information and access to options open in the market in the near vicinity. Moreover, people hailing from high-priced property areas will tend to negotiate in and around that reference price point resulting in paying more than what would have been paid by a person hailing from a lower-priced area. This confirms that location acts as an anchor causing buyers to spend more or less with respect being far or near to the target property (Zhou et al., 2015).

Various anchors have been studied to determine their effect on the housing market, including the initial listing price of the property, its distance from investors or buyers, government valuations, and public information. However, after analysing these anchors separately, it is important to analyse the real-world picture of real estate investment. A variety of factors influences real-world housing prices intermixed together. It may be worthwhile to explore the combined effect of these anchors in the future and see which anchors tend to dominate the projecting of real estate prices. Despite the complexity of future work, it should yield a more accurate model and promote a multi-directional approach in the housing market.

Loss aversion

Loss aversion arises when people have different perceptions of similar amounts of profit or loss in transactions (Bao et al., 2021; Yan and Bao, 2018; Mayer, 2011). Genesove and Mayer (2001) studied loss aversion as a behavioural bias for the first time. They explained that homeowners treat gains and losses differently and are averse to the potential nominal loss. They will tend to wait for a potentially high-paying customer to avoid the nominal loss they may have experienced earlier or anticipated (Waweru et al., 2014). Owners expecting loss set higher listing prices (Anenberg, 2016; Liu et al., 2018) and such houses that were expected to sell at a loss sold at an increased price (Greenaway-McGrevy and Haworth, 2020). Also, the prices are affected if sellers have prior loss experience (You, 2020). This effect of loss aversion is more predominant when considering commercial real estate and more seasoned investors. The effect in commercial real estate has been adjudged to be more predominant because there are ample amounts of transactions happening and thus, investors and sellers have more reference points to compare prices and, thus, high loss aversion bias (Li and Wan, 2021). Even in commercial real estate, the effect is more for more sophisticated and experienced investors because their experience of transactions helps them to be more averse to potential losses (Bokhari et al., 2011).

This behavioural bias has also been an antecedent in housing mobility, wherein people move to newer locations to avoid nominal loss (Engelhardt, 2003a; Steegmans and Hassink, 2018). The asymmetric preference for loss and gain makes loss aversion an important factor and helps predict housing prices (Anenberg, 2011; Leung and Tsang, 2013a, 2013b; Hayunga and Pace, 2017). It is also found that housing loan borrowers are affected by loss aversion and sometimes willingly default to repay (Bhutta et al., 2017). However, Pandey and Jessica (2018) presented a contradicting view and said that loss aversion did not influence real estate investors.

Further studies have tried to find the factors influencing loss aversion like time dependency, experience, owners’ race, and usage of agents. Buisson (2016) suggests time horizon to be an important factor in determining the degree of loss aversion. When the time horizon is short, sellers tend to be more risk-averse and are willing to accept lower prices in order to mitigate the loss that they perceive to be impending. However, when the time horizon is long enough, they tend to wait for a higher price or may exit the market and are less prone to this bias. In addition, the race of owners or usage of agents in transactions does not seem to affect the asking price, but past experiences of loss do tend to have a significant impact (Hayunga and Pace, 2017).

While sellers and owners tend to show this bias and have been studied extensively, the effect of loss aversion on selling prices is more magnified when it is associated with real estate developers (Bao et al., 2021). Real estate developers tend to be risk averse in selling new real estate, and the increase in price gets delivered down to the ultimate price that homeowners will have to pay to acquire the property. To differentiate the effect, private firms tend to have a greater effect than state-owned firms, and unlisted firms have a greater effect than listed firms (Bao et al., 2021). Loss-averse sellers tend to deter sales during the downfall of the market (Tu et al., 2009) and negotiate to reduce the risk of loss rather than maximizing profit (Zillante et al., 2019). This causes the difference between the price sellers are willing to accept and the price buyers are willing to pay (Gong et al., 2019). It also causes many sales to expire (Carrillo, 2013).

Despite the presence of loss aversion in commercial real estate (Li and Wan, 2021), more data on commercial transactions is necessary to fine-tune the findings. This still needs to be approached and thus demands future work. Another interesting study would be to exploit the time horizon effect suggested by Buisson (2016) on private firms since they tend to show a higher degree of loss aversion (Bao et al., 2021). This behavioural bias has been studied and affirmed to be present with both investors and developers. However, a comparative study between investors and developers can be done to see the comparative effect on real estate prices, which shall give insights into the comparative importance of behavioural bias of investors and developers or buyers and initial sellers.

Regret aversion

Regret is one of the most common feelings that is experienced in the investment sector, where investors often feel regret after they fail to capitalize on probable profit or incur a significant loss. It is human nature that they try to avoid regret by using any comforting means or thinking. Investors try to comfort themselves after a loss by applying a different way of thinking. This, however, has been shown to have detrimental effects afterwards where they tend to hold on to bad investments and amplify the loss later (M. J. Seiler et al., 2008).

The studies of Waweru et al. (2014), Pandey and Jessica (2018) and Hoxha and Hasani (2022) confirm the presence of regret aversion bias and how it affects investor decision-making. However, real estate prices do not seem to be impacted by regret aversion bias (Malik et al., 2021). A different viewpoint is given by Seiler and Seiler (2010) who studied regret aversion in the real estate market and concluded that a large majority of people do not show regret aversion bias and perceive a forgone profit as a larger issue than unawareness about a potential gain. They also present that single women tend to show higher regret aversion. Wangzhou et al. (2021) suggested that regret aversion bias affects risk perception, and financial literacy weakens the relationship between regret aversion and investment decision-making, indicating that people who tend to be financially more proficient can overcome the regret they feel and make more informed decisions rationally.

There has been limited research on regret aversion, and the modelling and analysis techniques have yet to be developed. Therefore, a more extensive sample study could be conducted to investigate this behavioural bias. Despite regret aversion being confirmed by some researchers when it comes to housing decisions, its effect on housing prices has only been studied once with a negative outcome. More research will likely be beneficial since housing decisions usually result in price predictions.

Herding

Herding behaviour is a widespread phenomenon across investment regimes where many investors seem to follow other investors leading to poorer investment decisions and mass trading in one direction, causing market instability (Kinatta et al., 2022). Such behaviour exists in the housing market (Cascão et al., 2023) and the mortgage loan market (Martins et al., 2020). Housing prices have been said to be much more volatile like stock prices. Herding bias has been adjudged as a possible explanation for fluctuations in house prices (Hott, 2012) across 7 OECD countries. One possible factor behind herding behaviour is the adverse sentiment (Philippas et al., 2013) and social and normative influences which cause home buyers to herd (Susanto and Njo, 2020).

The importance of housing investment has been explained by Tan (2022) and Talpsepp et al. (2021). While studies could not find any correlation between gender and herding behaviour, people of younger age and older people had moderate to low levels of herding bias. Also, people of a commerce background tend to show low herding behaviour (Talpsepp and Tänav, 2021). Herding behaviour has been studied for different categories of people, and institutional investors have also been discovered to show herding behaviour (Lantushenko and Nelling, 2017). This behaviour is also demonstrated among real estate evaluators who seem to trust and move toward the valuations done by their peer group (Ali et al., 2020). An important finding is that the occurrence of such behaviour is not on the organization level but according to property type. Fund managers, however, do not exhibit this behaviour due to a highly volatile and performance-pressure market which causes them to be highly orthodox in their decision-making approach leading them away from herding behaviour (Lowies et al., 2016). Herding is observed to be on the lower side, with institutional investors and low uncertainty of asset value (Ngene and Gupta, 2022). The authors further suggest that since herding induces market volatility and instability, governments should implement policies and regulations to curtail this behaviour.

Herding is said to be present and varies across regimes, geographical regions, and market conditions (Ngene et al., 2017). Many researchers have tried to study this behaviour along with different market conditions to see the effect. Philippas et al. (2013) started the study in this direction using RIET and concluded that investors tend to show herding behaviour during a turbulent market, with it becoming stronger in a declining market (Zhou and Anderson, 2013). Further, the market crash caused strong herding behaviour. Such market conditions further caused positive and negative herding, where negative herding was observed during volatile markets and positive during the market crash regime (Babalos et al., 2015). This observation is confirmed by Akinsomi et al. (2018) who studied the same across three market regimes which yielded that herding behaviour was substantial during the low volatility regime, shifting from anti-herding during high volatility to low volatility. Ro et al. (2019) also confirm that herding is more robust in up than down market. A different viewpoint is suggested by Lin et al. (2018) who say that spurious herding behaviour is present during a rising market which is contradictory to previous works.

While herding bias has been studied for market investors, such a study has to be extended to other market players like developers, agents, and fund managers. Such a study could further pave the way for determining the effect of herding bias on the pricing of properties. Another future direction could be to exploit the findings that suggest that herding is related to the education level of investors to find the relationship with property type to see if the level of education causes any moderation. In contrast, investors are segregated based on the property type they are dealing in. Martins et al. (2020) suggest that Disaster Myopia is observed in some European countries, so it can be intriguing to study whether such short-sightedness for favourable market conditions has changed before and after the pandemic. Two more avenues for future work in this area could be to see the effect of financial literacy on herding behaviour as Talpsepp et al. (2021) suggest that people with commerce education tended to be less prone to herding due to their knowledge of finance and assessing the relation of herding with a population of the region concerned in order to explore the possibility as suggested by Ngene and Gupta (2022).

Overconfidence

Investors often judge their abilities to be superior or more capable than they are, which affects investment intentions and often leads to bad transactions and losses (Hoxha and Hasani, 2022). This cognitive bias has thus been studied to determine the effect on real estate investment decisions. Many researchers have used REIT instead of real estate transactions to study this factor. Eichholtz and Yönder (2015) have studied this bias for the first time, exploring the effect of overconfidence on trading activity and investments in real estate. They considered investor trading and holding decisions on behalf of the study objectives and concluded that overconfident CEOs tend to invest more than their counterparts and sell less. In the investment arena, it is important that investors can predict the return they expect, and thus different methods are used to do that. On comparing dividend growth theory with overconfidence and self-attribution bias, it was found that the latter affects return predictability more than the former (Chen et al., 2022). Not only investors but property evaluators also tend to show more than required confidence in their abilities when evaluating the price of a property (Ali et al., 2020). This also causes variations in the valuations done by different evaluators for a similar property (Lee et al., 2022).

Housing prices have been another important area that has been studied in relation to overconfidence bias to see the cause–effect relationship. Hwang et al. (2020) confirm that overconfidence in UK households is present with significant evidence. Malik et al. (2021) affirm the effect of investors’ overconfidence in real estate prices. Income has been studied as an important demographic variable that affects overconfidence, and results show that higher income causes higher levels of overconfidence among investors (Cascão et al., 2023).

While most of the studies have been unanimous on the fact that overconfidence has some effect on investment attributes, Pandey and Jessica (2018) differ and conclude that it does not significantly influence property investment decisions. Overconfidence bias has been challenging to study for real estate due to the requirement of many high-frequency transactions, which are not easy to find in this sector. Also, these conditions cannot be simulated in laboratories. These things have contributed to the barriers in studies for this bias (Bao and Li, 2016).

Education and annual income of investors have been studied and affirmed to be important factors in behavioural biases. It can thus be interesting to see the effect of these two factors on overconfidence. Further, the overconfidence factors like overestimation and over placement apart from over precision, can be included in the proposed model (Hwang et al., 2020). To provide some direction to the work of Pandey and Jessica (2018) a larger sample could be used to test the IRT model since, for more robust findings through IRT, a sample size of 500–1000 is recommended (Finch and French, 2018) and the considered sample size in their work is 543 which is on the lower threshold. This can be interesting because their work contradicts other works’ findings, suggesting that overconfidence has a significant influence.

Other biases

Apart from the biases discussed above, the rest of the 10 biases have been studied less and thus have very little research with respect to real estate investments. Availability bias is another bias that is related to information availability. It explains that people tend to give weight to the most easily and readily available information for making decisions. Investment decisions in real estate are also not diverged from this bias, and they do get influenced by availability heuristics (Cascão et al., 2023). However, Cascão et al. (2023) concluded in their study that the effect is not fully confirmed due to the low variance of the model they hypothesized. Another interesting finding of their work was that women tend to display higher availability heuristics. Such dependency on readily available information causes people to be more sensitive towards price. Along with women, investors dealing in local properties also showed higher levels of availability bias (Waweru et al., 2014). The effect of time was considered in accordance with availability bias and while comparing the government-supported appraised prices (Capital Value) and actual sales price (Transacted Price), it was found that the effect of information diminished over time which supported the fact that availability bias exists and readily available information is preferred (Cheung et al., 2022). Such dependency on easily available information represents the myopic behaviour of investors which means that they are short-sighted in decision-making and consider only what is available to them within easy reach (M. Seiler et al., 2008; Pandey and Jessica, 2018).

Investors also tend to display confirmation bias wherein they want confirmation from their friends or colleagues over the fair price they have adjudged. They then tend to form an anchor or reference point around that price (Ali et al., 2020; Lee et al., 2022). However, this bias was said to be negligible among the professional property surveyors in a study conducted in the UK (Gallimore, 1996).

The presentation of information to investors also plays a crucial role in decision-making and investment intention in the form of framing bias (Hoxha and Hasani, 2022). It has been said that investors seem to perceive a similar piece of information differently if it is presented in a positive or in a negative way. Jin and Gallimore (2010) and Levy et al. (2020) established in their study that investors perceive a decrease in price to be more and a similar increase in price to be less if the information is presented to them in a negative or positive manner, respectively. They postulated that such asymmetry got exaggerated based on the property’s nearness to the investor. Kinatta et al. (2022) gave a different perspective on framing bias and said that investors who tend to analyse and iterate given information in different ways, such as to get different perspectives, tend to make better judgements and decisions.

Investors often tend to predict the outcome of certain events and expect higher than actual returns. They also tend to predict the outcomes based on the probability of return of prices from higher to lower and vice versa. This expectation of higher-than-normal returns affects the decision-making of real estate investors (Malik et al., 2021). However, this bias has also been studied less in the real estate investment environment. Apart from the work of Malik et al. (2021), other researchers have not found very conclusive evidence of gambler’s fallacy to be of importance. While Waweru et al. (2014) found that the gambler’s fallacy has a shallow impact, other works did not find any significant impact on the decision-making of real estate investors (Pandey and Jessica, 2018; Cascão et al., 2023).

Representativeness is a similar kind of behavioural bias where investors again try to predict the outcome of a certain event or investment based on the outcome of any event of a similar nature that has happened in the past. It is usually related to overstressing the good outcome of a past event and believing that another event of similar nature will also result in a good outcome (Cascão et al., 2023). This factor has been found to be one of the most dominant factors that affect the real estate decision-making process (Waweru et al., 2014; Pandey and Jessica, 2018; Hoxha and Hasani, 2022).

People often tend to compartmentalize their minds to treat different assets and investments differently and individually. Such compartmentalization can lead them to make improper judgements and losses. This happens when people allocate resources to specific assets without comparing or studying the interrelation with other options. It has been found to be negatively but significantly related to decision-making in real estate investment (Kinatta et al., 2022). This confirms the findings (Seiler et al., 2012; Waweru et al., 2014). The only divergence found is in the study of Pandey and Jessica (2018) who conclude that mental accounting does not have a significant impact.

Sellers try to sell their assets at places and times when return expectancy is high. This has been described as a disposition effect in behavioural biases. Quan (2002) posits that sellers will flock to places where they are most likely to get good buyers. He examined the difference between an auction and direct sales and found that buyers with higher search costs preferred auctions, while buyers with lower costs preferred direct sales. Thus sellers who desired better payoffs went to auctions. While most people tend to sell their property when returns are high, some sellers are willing to sell the property at the break-even point (Seiler et al., 2012). This also cascades down to investors’ willingness to sell a property based on the return. They tend to sell those properties that bring in more return but do not like selling those that have not performed well (Crane and Hartzell, 2010).

Some biases are linked to the psychological closeness of the investor with the property. People who look for investment or purchase a house intended for their stay make decisions differently due to emotional attachments. The same goes for sellers who attach value to the property if they stay there. This effect is known as the endowment effect (Tan, 2022). Investors also tend to invest in properties or areas known to them and avoid venturing into the unknown, thus displaying familiarity bias (Seiler et al., 2013). The limitation of the market thus causes hurdles in diversification and causes an increase in property prices in an area (Henneberry and Mouzakis, 2014). The owners who have properties with less current value as compared to past purchase prices suffer from familiarity bias and do not want to list them for sale at lower prices because they feel they are more familiar with the market (Lane et al., 2011). Also, as discussed for framing bias asymmetry in the perception of information based on the way of presenting it, this bias gets exaggerated if the investor is more familiar with the market, thus showing familiarity bias (Levy et al., 2020). This familiarity bias has sometimes been diffused into home bias, where investors prefer local markets. As seen in the study of Gibilaro and Mattarocci (2016), African and Asian countries tend to show higher levels of home bias and thus the least diversified portfolio. However, home bias does not affect returns to a great extent (Gaar et al., 2022). More experienced investors, however, may go to global markets or leave local markets when they perform poorly (Wright and Yanotti, 2019; Florentsen et al., 2020).

These biases, however, have been studied less, and therefore much future work can be done for better understanding. One such avenue is to explore different investor types, like institutional investors, developers, etc., so that a wider perspective is received. Also, such studies can be introduced again from time to time for the same sample so that the change in behaviour over time can be recorded and analysed. The latest and advanced statistical techniques can be evaluated with present study designs to validate the findings even more. In totality, these biases are yet open for expansive studies and explorations.

Results and discussion

The literature review of 86 studies examined behavioural biases in real estate investment. This section presents a few findings from the study that give a broad overview of the characteristics of existing literature in this field. There are also certain technological difficulties and research voids that call for additional contributions from the researchers.

Following an examination of the articles, it was found that there has been a significant increase in the number of articles looking at behavioural biases in real estate investment. Real estate has recently gained much attention as an investment sector. There could be various reasons attributed to this, wiz. It provides much diversity in an investment portfolio and is a physical asset. Also, behavioural analysis is important since real estate deals do not have tools, analysis charts, or statistical indicators in abundance like the stock market for example. Moreover, factors like emotional attachment to a dwelling place and housing being a roof over the head play a crucial role in decision-making.

Furthermore, the number of real estate investors has significantly increased in emerging economies in recent years. According to the India Investment Grid (IIG), the Indian real estate industry is expected to reach USD 1 trillion by 2030. Given a steep rise in real estate investment, there is a need to examine the behavioural biases of real estate investors in these countries. However, it is imperative to note that the aforementioned survey of the literature demonstrates that in the past, the majority of research work was undertaken to examine the behavioural biases in real estate investment, focused on developed countries. A possible explanation for this might be that the real estate market of developed countries is more organized, and data is easily available for research.

Upon analysing the number of articles for the biases identified, we see that anchoring bias has the most number of studies (37), followed by loss aversion (24) and herding behaviour (18). The rest of the biases have a very low number of studies to their name. While many studies on some biases have helped a great deal in deeper understanding, future works should target the unexplored biases and their interplay with the other deeper studied ones. Regression has been one of the most widely used statistical techniques in the examined studies and it has been time and again used extensively for establishing the relationships between two variables of interest. However, integrating real-life scenarios often leads to the formation of complex models due to the deeper interplay of many variables. Such complexities could be handled better using newer statistical techniques like PLS-SEM or IRT, as has been used in some studies. Therefore, future studies may use these techniques to give a more robust model that fits closer to real-life situations.

The factors that contribute to anchoring bias are initial listing price, government-influenced appraisals of properties, and the distance of the property from the investor (Cheung et al., 2022; Clauretie and Thistle, 2007; Northcraft and Neale, 1987; Pandey and Jessica, 2018). Such factors sway the bias of an investor towards a specific decision, and thus, anchoring heuristics influences both decision-making and property prices. Among the demographics, the age of investors, income group, and gender (women) tend to influence the anchoring bias (Hjalmarsson and Österholm, 2021; Kucharska-Stasiak, 2018). Future research should examine these factors in interrelation with each other to get a more robust and closer-to-real-world scheme of things.

Investors often treat loss and gains separately and thus hold on to poorly performing assets to mitigate the losses. Such effect was found to be more predominant for commercial real estate and with real estate developers (BAO and LI, 2016; Li and Wan, 2021). Loss aversion bias also gets affected by time horizon, and when investors have ample time to liquidate or sell an asset, they tend to wait longer, amplifying their losses (Buisson, 2016). Future studies could focus on exploiting this time horizon effect on different investor types and private firms which show higher loss aversion behaviour (Bao et al., 2021). The interconnection between investors and developers should also give interesting insights since the biased decision-making of developers magnifies the effect due to control over listing prices.

While it is suggested that regret aversion is an important factor in decision-making (Waweru et al., 2014; Pandey and Jessica, 2018), many researchers could not find any significant influence over decision-making and real estate prices (Malik et al., 2021; Seiler and Seiler, 2010). The review finds that regret aversion is studied quite less, and thus, very few models are available to conclude the effects. Future studies with larger samples and more factors could give a higher understanding and generalized results.

Herding behaviour has been an important bias not only in the real estate sector but more predominantly in stock markets. It has been confirmed to cause price fluctuations (Hott, 2012) with the bias being more prevalent during volatile or turbulent market conditions (Zhou and Anderson, 2013). Even institutional investors tend to show herding behaviour (Lantushenko and Nelling, 2017; Ngene and Gupta, 2022). Such behaviour can be attributed to people’s tendency to lose confidence in their understanding when conditions are adverse and prone to follow others. This is justified by the finding that people in commerce tend to herd less due to a higher understanding of financial situations. Future suggested works could thus see the effect of financial literacy and understanding on herding behaviour along with different market players like fund managers, developers, and buyers.

Investors tend to be overconfident in their knowledge or intuition of any transaction or investment which, often leads to losses. Firm owners with higher levels of overconfidence were found to sell less and buy more (Eichholtz and Yönder, 2015). Also, people with higher incomes tend to show higher levels of overconfidence (Cascão et al., 2023). Such behaviour could be explained by the fact that people tend to believe that their investments will reap larger than actual benefits, which causes them to liquidate their assets less and hold on to bad investments. Going by the effect of education as concluded in other biases, it could be interesting to see in future studies how education affects overconfidence along with the level of income.

Apart from the above-discussed biases, other biases have been studied less, and thus findings are yet to become conclusive without backing from more independent studies. Regarding availability bias, researchers have demonstrated that it affects investment decisions because it shows investors’ short-sightedness when they focus on easily available information (Pandey and Jessica, 2018). Moreover, the bias gets affected by time since the information is available and whether the investors are dealing in local or non-local properties (Waweru et al., 2014; Cheung et al., 2022). The assurance that investors get from asking their friends or colleagues also takes the shape of confirmation bias, which also facilitates anchoring bias (Ali et al., 2020). Gambler’s fallacy also has not been supported by many researchers (Waweru et al., 2014; Pandey and Jessica, 2018; Cascão et al., 2023) with only one study confirming the presence (Malik et al., 2021). Mental accounting has been shown to affect decision-making negatively (Kinatta et al., 2022). The three biases, namely, familiarity bias, the endowment effect, and home bias, are related to the closeness of the property to the investor, both emotionally and physically. The limited works in these avenues indicate that investors tend to be more interested in local properties (Seiler et al., 2013; Wright and Yanotti, 2019). Such findings can be attributed to the fact that people are more familiar with what they are close to regularly, and also, they are privy to much information that can be difficult for people who are far away. Framing variation has been shown to have positive outcomes (Kinatta et al., 2022) owing to the fact that it is always better to analyse a particular situation from different perspectives. Lastly, the disposition effect has been stated to be present where investors are always likely to sell a property when the return is significantly higher (Seiler et al., 2012). However, the findings cannot be termed very conclusive due to the lack of more studies. The future arena for these biases is wide open due to the lack of work. These future studies could utilize the interrelationships studied in other more avidly studied biases and venture into the underlying factors. Also, studies can be repeated over time to analyse the change in behaviour and check the time factor in the existing models.

Conclusion and future scope

Real estate investment has significantly gained momentum in recent years. It has been judged as a significant diversification in the portfolio of investors. Moreover, real estate has been emotionally important for people since they consider a roof over their heads necessary. Investors’ decision-making for real estate has been similar to other investments, leading to the study of behaviour and associated biases. Behavioural finance explains that people do not always make rational decisions based on numbers and facts. More often, they make irrational decisions based on their beliefs or understanding, which causes bias towards particular factors. Even though behavioural biases play a crucial role in decision-making, the study related to the effect of such biases in the perspective of real estate is still not abundant. Most of the focus has been on stock markets, and many of the identified biases have very little to negligible studies in their name. This has led the authors to systematically review the existing works related to behavioural biases in real estate investment to provide an excerpt of the works conducted. A systematic review of published research from 1980 to 2022 is presented in this study. Besides reviewing identified papers, the authors provide directions for future research in this area and shed light on the research gap in this area. In order to identify relevant studies, the PRISMA model was used, which resulted in 86 articles being included in the review. Various biases have been studied in detail with an analysis of the factors that influence those biases and their effect on various real estate parameters. The authors have provided explanations for the findings, identified which biases have been studied less, and provided future directions. Anchoring, loss aversion, regret aversion, herding, and overconfidence have been the most studied behavioural biases. In contrast, availability, gambler’s fallacy, representativeness, home bias, endowment effect, familiarity, mental accounting, and framing variation are less studied ones.

The studies identify initial listing price, previous purchase price, information accessibility, gender, age, government appraisals, and property distance from investors to be the most important factors influencing anchoring heuristics. Loss aversion is found to be more predominant in commercial real estate and seasoned investors affecting housing prices drastically if developers show loss aversion. Also, the time horizon is important, and investors with more time tend to be more loss-averse and sell late. Researchers have concluded that regret aversion influences decision-making but does not affect real estate prices. For herding bias, it was found that it has a great impact on housing price fluctuations and is more prominent during turbulent or volatile markets. Also, people having financial knowledge tend to show lesser herding behaviour. Coming to overconfidence, it was found that income affects overconfidence bias, and most of the researchers tended to use REIT to study this since physical real estate transactions are not so frequent to easily get the data. While other biases have also been studied and researchers provide some insights, the studies are too few for the authors to draw any conclusive evidence and make any comments. These biases do tend to show the effect of decision-making but there are yet open for more studies to support these findings.

This paper provides some important academic contributions to understand behavioural biases. It provides a comprehensive yet concise excerpt of the existing research works to give a wholesome understanding of the behavioural biases in real estate investment and the different factors affecting them. It also conceptualizes the effect of those biases on different parameters like housing prices and market conditions. This paper also presents some contributions to policy making. It shall help policymakers and real estate investment institutions strategize effectively to create an encouraging environment for real estate investors. As the study points out, the effect of different factors like closeness of the property from the investor, education level, and motives behind house purchase, investment institutions can develop programs that can help investors understand the rational point of view so that they can overcome the effect of biases to make correct decisions. Policymakers can make better policies like adequate valuation of property and limited time offers on financial instruments so that false reference points that can negatively affect the property price are minimized. Lastly, it can help investors to understand that they should evaluate the market information and rely on it more than their beliefs so that biases like herding behaviour and overconfidence are reduced.

Future researchers have an open area to explore the biases in real estate investment because human behaviour is a never-ending arena. Future works should consider the combined effect of various factors that affect the biases but have been studied individually. The real-life scenario will be much more complex as it will consist of multiple biases. Moreover, future studies should involve a multitude of players in this market like fund managers, actual sellers, buyers, institutional investors, and developers. This has been done in very few biases; the rest are yet to be explored. Apart from the future direction given for deeper analysis with respect to studied behavioural biases, there are a few suggestions that can align with the real estate landscape as a whole and help in a finer understanding of the underlying nuances. Firstly, future studies should concentrate on real estate investment in developing countries like India where there is a higher potential for growth and investors are more inclined towards real estate investment. Secondly, researchers should identify the biases according to the type of property, to get an idea of whether the investors of residential and commercial property act similarly or they are different. Further, future works should utilize more primary data as it is closer to reality and also real-time. While some biases like anchoring bias have a healthy distribution among primary and secondary, some biases like herding and loss aversion have a disproportionately high number of secondary data-based studies. Hence, primary data-based studies for these type of biases is necessary. Finally, besides direct real estate investment, biases of REIT investors should also be identified and they can be compared by the researcher. The rationale for doing such bifurcation is to get an idea of how investors’ behaviour differs when they invest in direct and securitized real estate. These directions should help potential researchers to expand the intellectual universe of behavioural biases and thus offer understanding for decision-making and investments.