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Conflicts of Interest and Agent Heterogeneity in Buyer Brokerage 买方经纪中的利益冲突与代理人异质性
Pub Date : 2021-03-16 DOI: 10.2139/ssrn.3805973
L. Kryzanowski, Yanting Wu, Tingyu Zhou
This paper investigates the incentives of agents working with buyers (buying agents) under the fixed percentage commission system (FPCS) and the implications on housing market outcomes. Our model shows that the FPCS without a binding contract between the buyer and the buying agent could produce outcomes that are more equitable for buyers. The reason is that the absence of a binding contract helps mitigate the conflict of interest between the buyer with her agent and ensures a more faithful behavior of the buying agent. Our model shows that agent heterogeneity plays an important role in determining the binding force of the FPCS in the absence of a binding contract. Results from simulations and empirical analyses using house transactions in Canada support our model predictions.
本文研究了固定佣金制度(FPCS)下与买家合作的代理人(购买代理人)的动机及其对房地产市场结果的影响。我们的模型表明,买方和购买代理人之间没有约束性合同的FPCS可以产生对买方更公平的结果。原因是,没有约束性合同有助于减轻买方与其代理人之间的利益冲突,并确保购买代理人的行为更加忠诚。我们的模型表明,在没有约束性契约的情况下,代理异质性在决定FPCS的约束力方面起着重要作用。加拿大房屋交易的模拟和实证分析结果支持我们的模型预测。
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引用次数: 1
Housing Market in the Time of Pandemic: A Price Gradient Analysis from the COVID-19 Epicentre in China 大流行时期的住房市场:基于中国新冠肺炎疫情中心的价格梯度分析
Pub Date : 2021-03-05 DOI: 10.3390/JRFM14030108
K. Cheung, Chung Yim Edward Yiu, Chuyi Xiong
While the outbreak of the COVID-19 disease has caused asset markets to experience an unprecedented spike of risk and uncertainty worldwide, the real estate market in many global cities appears to be immune to the adverse effects. How does COVID-19 affect urban housing markets? This study is a first attempt to identify the pandemic’s impact on house prices by applying a price gradient analysis to the COVID-19 epicentre in China. Considering microlevel housing transaction data in 62 areas from nine districts in Wuhan City from January 2019 to July 2020, the hedonic pricing and the price gradient models suggest that there was, respectively, a 4.8% and a 5.0–7.0% year-on-year fall in house prices immediately after the pandemic outbreak. Although house prices rebounded after the lockdown period, the gradient models show that the price gradients were flattened from the epicentre to the urban peripherals. The price premiums in high-density areas were also substantially discounted after the city’s lockdown. Our findings are robust to different model specifications. The implication is that the risk associated with the pandemic is localised and transitory in nature. People may be able to internalise the risk by residing in low-density residential areas.
虽然新冠肺炎疫情的爆发使全球资产市场经历了前所未有的风险和不确定性,但全球许多城市的房地产市场似乎没有受到不利影响。COVID-19如何影响城市住房市场?本研究首次尝试通过对中国新冠肺炎疫情中心进行价格梯度分析,确定疫情对房价的影响。结合2019年1月至2020年7月武汉市9个区62个区域的微观住房交易数据,享乐定价模型和价格梯度模型显示,疫情爆发后,房价分别同比下跌4.8%和5.0% ~ 7.0%。虽然房价在封锁期后反弹,但梯度模型显示,从震中到城市外围的价格梯度趋于平缓。人口密集地区的房价溢价在封城后也大幅降低。我们的研究结果对不同的模型规格具有鲁棒性。这意味着,与大流行相关的风险是局部的和暂时的。居住在低密度居民区的人们可能会将这种风险内在化。
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引用次数: 39
Measuring Unmeasurable: How to Map Laws to Numbers Using Leximetrics 测量不可测量:如何使用词性度量将规律映射到数字上
Pub Date : 2021-03-01 DOI: 10.2139/ssrn.3810489
K. Kholodilin, Linus Pfeiffer
As the institutional literature convincingly shows, socioeconomic phenomena are to a large extent shaped by the formal institutions, that is, legal acts (laws and ordinances). However, the latter are formulated in a specific language that is difficult to understand, let alone to measure. However, since the early 1990s, a whole branch of economic analysis of governmental regulations has evolved. It is known as leximetrics, i.e., the measuring of laws. It covers a wide range of economic sectors, such as financial, labor, housing, and product markets, among others. The two most popular methods are codification and surveys. Under the first method, the legal texts are analyzed, relevant provisions extracted, and numeric values assigned depending on these provisions. Under the surveys method, local experts are asked to provide their assessment of currently valid legal provisions and sometimes also their enforcement. In both cases, the legal texts are mapped onto real-valued indices with the objective of gauging the intensity of governmental regulations. These indices can be and are successfully used to explain the economic phenomena. This study provides a comprehensive overview of the leximetric literature and demonstrates interdependences between different types of governmental regulations.
正如制度文献令人信服地表明的那样,社会经济现象在很大程度上是由正式制度,即法律行为(法律和条例)塑造的。然而,后者是用一种难以理解的特定语言表述的,更不用说测量了。然而,自20世纪90年代初以来,一个完整的政府法规经济分析分支已经发展起来。它被称为弹性计量学,即规律的测量。它涵盖了广泛的经济部门,如金融、劳动力、住房和产品市场等。最常用的两种方法是编纂和调查。在第一种方法下,对法律文本进行分析,提取相关条款,并根据这些条款赋值。根据调查方法,要求当地专家对目前有效的法律规定作出评估,有时也对其执行情况作出评估。在这两种情况下,法律文本都被映射到实值指数上,目的是衡量政府法规的强度。这些指标可以并且已经成功地用来解释经济现象。本研究提供了词汇学文献的全面概述,并展示了不同类型的政府法规之间的相互依赖性。
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引用次数: 3
Daily Appraisal of Commercial Real Estate A New Mixed Frequency Approach 商业地产日估价一种新的混频方法
Pub Date : 2021-02-19 DOI: 10.2139/ssrn.3789205
Marc K. Francke, A. Minne
We present a mixed frequency repeat sales model for commercial real estate, taking into account changes in net operating income between the date of buying and selling the property. Moreover, we relate monthly private market index asset returns to lags, up to one year, of daily REIT returns. The underlying REIT model enables us to interpolate the monthly private market index returns on a daily basis, and to predict the private market index asset returns going forward. The mixed frequency repeat sales model facilitates daily appraisal of commercial real estate portfolios. We apply the model on sale prices (all property types, and apartments only) in the period January 2006 up to July 2020, provided to us by Real Capital Analytics. We find that the mixed frequency repeat sales model reduces one-month-ahead forecasts errors and index revisions, compared to a benchmark model without daily REIT returns.
我们提出了一个混合频率重复销售模型的商业房地产,考虑到在购买和出售财产之间的净营业收入的变化。此外,我们将月度私人市场指数资产回报与房地产投资信托基金每日回报的滞后(最长一年)联系起来。基础的房地产投资信托基金模型使我们能够以每日为基础插值私人市场指数的月度回报,并预测私人市场指数资产未来的回报。混合频率重复销售模型有助于商业房地产投资组合的日常评估。我们将该模型应用于2006年1月至2020年7月期间的销售价格(所有房产类型,仅限公寓),该模型由Real Capital Analytics提供。我们发现,与没有每日REIT回报的基准模型相比,混合频率重复销售模型减少了一个月前的预测误差和指数修正。
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引用次数: 4
Leases as Forms 租赁表格
Pub Date : 2021-02-15 DOI: 10.2139/ssrn.3786326
David Hoffman, Anton Strezhnev
We offer the first large scale descriptive study of residential leases, based on a dataset of ~170,000 residential leases filed in support of over ~200,000 Philadelphia eviction proceedings from 2005 through 2019. These leases are highly likely to contain unenforceable terms, and their pro-landlord tilt has increased sharply over time. Matching leases with individual tenant characteristics, we show that unlawful terms are surprisingly likely to be associated with more expensive leaseholds in richer, whiter parts of the city. This result is linked to landlords' growing adoption of shared forms, originally created by non-profit landlord associations, and more recently available online for a nominal fee. Generally, such shared form leases contain worse rules for tenants than the proprietary leases they replace. Over time, it has become easier and cheaper for landlords to adopt such common forms, meaning that access to justice for landlords strips tenants of rights. We observe few within landlord effects: rather, property owners specialize in particular areas in the city. This specialization leads black tenants to be more susceptible to eviction based on crime or drug use on the premises, an effect concentrated in whiter neighborhoods. Our results offer a significant advance in the empirical study of consumer contracting, building the field by examining individual differences in adherents, geography-effects, information costs and time trends.
我们对住宅租赁进行了首次大规模的描述性研究,该研究基于约17万份住宅租赁的数据集,以支持2005年至2019年期间超过20万份费城驱逐诉讼。这些租约极有可能包含无法执行的条款,而且随着时间的推移,它们的亲房东倾向急剧增加。将租赁与个体租户特征相匹配,我们发现,在城市中较富裕、白人较多的地区,非法条款很可能与更昂贵的租赁联系在一起。这一结果与房东越来越多地采用共享表格有关,共享表格最初是由非营利房东协会创建的,最近在网上以象征性的费用提供。一般来说,这种共享形式的租赁包含比它们所取代的专有租赁更糟糕的规则。随着时间的推移,房东采用这种常见形式变得越来越容易,成本也越来越低,这意味着房东诉诸司法剥夺了房客的权利。我们很少观察到内部房东效应:相反,业主专注于城市的特定区域。这种专业化导致黑人租户更容易因犯罪或在房屋内使用毒品而被驱逐,这种影响主要集中在白人社区。我们的研究结果为消费者契约的实证研究提供了重要的进展,通过考察追随者的个体差异、地理效应、信息成本和时间趋势来建立这个领域。
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引用次数: 6
A Tale of Two Cities: Mainland Chinese Buyers in Hong Kong Housing Market 双城记:中国内地买家在香港房地产市场
Pub Date : 2021-02-09 DOI: 10.2139/ssrn.3477421
Yi Fan, M. Hu, Wayne Xinwei Wan, Zhenping Wang
This paper examines the effect of mainland Chinese buyers' housing purchase in Hong Kong. Contrary to media's allegation on mainland buyers causing huge bubbles in Hong Kong housing market, we find that mainland buyers only constitute less than 4% of housing transactions in Hong Kong from 2001 to 2017, and their price premium over locals is only 1.4% on average. The mainland premium is higher for properties attracting more interests from mainland buyers, such as luxury units larger in size (3.52%). We also find that the price premium varies with hedging demand for the currency risk over time (safe haven effect). Furthermore, the price premium is higher in buildings with more existing mainland homeowners (residential sorting). At last, the price premium is lower if the mainland buyer has stronger bargaining power such as more prior transaction experience or facing a mainland seller.
本文考察了中国内地买家在香港购买住房的影响。与媒体指责内地买家造成香港楼市巨大泡沫相反,我们发现,2001年至2017年,内地买家仅占香港房屋交易的不到4%,其价格相对于本地买家的平均溢价仅为1.4%。内地买家更感兴趣的物业溢价更高,如面积较大的豪华公寓(3.52%)。我们还发现,随着时间的推移,价格溢价随货币风险的对冲需求而变化(避险效应)。此外,现有内地业主较多的楼盘(住宅分类),价格溢价更高。最后,如果内地买家有较强的议价能力,如有较多的交易经验或面对内地卖家,则价格溢价较低。
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引用次数: 3
The Impact of the Opportunity Zone Program on the Residential Real Estate Market 机会区计划对住宅房地产市场的影响
Pub Date : 2021-02-05 DOI: 10.2139/ssrn.3780241
R. Bekkerman, Maxime C. Cohen, J. Maiden, Dmitry Mitrofanov
The U.S. Tax Cuts and Jobs Act of 2017 introduced opportunity zones (OZs). This program provides tax benefits for real estate investments in designated census tracts, with the goal of fostering economic development in distressed neighborhoods. We examine the impact of OZs on residential real estate by exploiting two datasets: a proprietary real estate dataset and census-tract demographics data between 2010 and 2019. Our real estate dataset comprises 36.1 million residential transactions spanning all 50 U.S. states. We first investigate the OZ selection process by examining which census-tract characteristics were taken into account. As expected, we find that tracts with higher poverty and unemployment rates and lower income levels were more likely to be selected. However, we find evidence that tracts with a higher average real estate price were also more likely to be selected. We then analyze the impact of the OZ program by comparing key real estate metrics (price and transaction volume) before and after the program launch. We find that the OZ program increased real estate prices by 4.03-6.13%, but we do not observe a significant effect on the transaction volume. Finally, we examine the moderating effects of census tract characteristics on the impact of the OZ program. Interestingly, we show that the price increase is driven by the higher end of the OZ market. Our findings thus question the overall societal and economic benefits of the program.
2017年美国减税和就业法案引入了机会区(OZs)。该计划为指定人口普查区的房地产投资提供税收优惠,目的是促进贫困社区的经济发展。我们通过利用两个数据集来研究OZs对住宅房地产的影响:一个专有的房地产数据集和2010年至2019年的人口普查数据。我们的房地产数据集包括美国50个州的3610万笔住宅交易。我们首先通过检查哪些人口普查区特征被考虑在内来调查OZ的选择过程。正如预期的那样,我们发现贫困率和失业率较高、收入水平较低的地区更有可能被选中。然而,我们发现有证据表明,房地产平均价格较高的地区也更有可能被选中。然后,我们通过比较项目启动前后的关键房地产指标(价格和交易量)来分析OZ项目的影响。我们发现,OZ计划使房地产价格上涨了4.03-6.13%,但我们没有观察到对交易量的显著影响。最后,我们研究了人口普查区特征对OZ计划影响的调节作用。有趣的是,我们发现价格上涨是由高端OZ市场推动的。因此,我们的研究结果对该计划的整体社会和经济效益提出了质疑。
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引用次数: 3
The Return on Secondary Market Trades of Open-end Real Estate Funds in Liquidation 开放式房地产基金在清算中的二级市场交易收益
Pub Date : 2021-01-08 DOI: 10.2139/ssrn.3773723
P. Gerlach
As a result of the liquidity crisis in October 2008, 18 open-end real estate funds with a total volume of €26 billion in assets under management had to be liquidated. Many shareholders decided to sell their shares on the secondary market instead of awaiting the iterative liquidation of the fund assets. This paper estimates and explains the returns of these secondary market trades based on a unique dataset comprising secondary market prices and individual fund characteristics. The estimated returns exhibit an enormous variation across the funds and transaction dates. A subsiding panel regression demonstrates that the return variation can be attributed to the price-discount at which the shares traded on the secondary market and the composition of the remaining fund assets.
由于2008年10月的流动性危机,管理资产总额达260亿欧元的18只开放式房地产基金不得不进行清算。许多股东决定在二级市场上出售他们的股票,而不是等待基金资产的反复清算。本文基于包含二级市场价格和单个基金特征的独特数据集,估计并解释了这些二级市场交易的回报。在不同的基金和交易日期之间,预估回报率存在巨大差异。沉降面板回归表明,收益变化可归因于股票在二级市场交易的价格折扣和剩余基金资产的构成。
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引用次数: 0
Towards Accountability in Machine Learning Applications: A System-testing Approach 机器学习应用中的问责制:系统测试方法
Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3758451
Wayne Xinwei Wan, Thies Lindenthal
A rapidly expanding universe of technology-focused startups is trying to change and improve the way real estate markets operate. The undisputed predictive power of machine learning (ML) models often plays a crucial role in the 'disruption' of traditional processes. However, an accountability gap prevails: How do the models arrive at their predictions? Do they do what we hope they do – or are corners cut?

Training ML models is a software development process at heart. We suggest following the dedicated software testing framework and verifying that the ML model is performing as intended. Illustratively, we augment two image classifiers with a system testing procedure based on local interpretable model-agnostic explanation (LIME) techniques. Analyzing the classifications sheds light on some of the factors that determine the behavior of the systems. We show that cross-validation is simply not good enough when operating in regulated environments.
以科技为重点的初创公司数量迅速增长,它们正试图改变和改善房地产市场的运作方式。机器学习(ML)模型无可争议的预测能力通常在传统流程的“破坏”中起着至关重要的作用。然而,普遍存在一个问责差距:这些模型是如何得出预测的?他们做了我们希望他们做的事吗?还是偷工减料?训练机器学习模型本质上是一个软件开发过程。我们建议遵循专用的软件测试框架,并验证机器学习模型是否按预期运行。举例来说,我们使用基于局部可解释模型无关解释(LIME)技术的系统测试过程来增强两个图像分类器。对分类的分析揭示了决定系统行为的一些因素。我们表明,在受监管的环境中操作时,交叉验证根本不够好。
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引用次数: 3
On the Slope of the Beveridge Curve in the Housing Market 论房地产市场贝弗里奇曲线的斜率
Pub Date : 2021-01-01 DOI: 10.2139/ssrn.3932080
Miroslav Gabrovski, Victor Ortego-Marti
The co-movement of buyers and vacancies, i.e. the Beveridge Curve, is a key determinant of the cyclical properties of the housing market. It determines the sign of the correlation between prices and key measures of liquidity such as vacancies (i.e. houses for sale), sales, and time-to-sell. As recent work has shown, to account for the core stylized facts of the housing market, search and matching models must be consistent with a positively correlated co-movement of buyers and vacancies—the Beveridge Curve must be upward-sloping. This paper provides evidence that buyers and vacancies are indeed positively correlated along the housing cycle, i.e. the Beveridge Curve on the housing market is upward sloping. Using data on vacancies and time-to-sell, we construct a series for buyers and estimate the slope of the Beveridge Curve. This approach requires only one minimal structural assumption: the existence of a matching function. The regression results confirm the positive relationship between buyers and vacancies over the business cycle. In addition, we provide an estimate of the elasticity of vacancies with respect to buyers. A one percent increase in vacancies is associated with around a two percent increase in buyers, confirming recent findings that buyers are more volatile than houses for sale. We hope this estimate will help future researchers in this area.
购房者和空置率的共同运动,即贝弗里奇曲线,是房地产市场周期性特性的关键决定因素。它确定了价格与流动性关键指标(如空置(即待售房屋)、销售和销售时间)之间的相关性。正如最近的研究表明的那样,为了解释房地产市场的核心事实,搜索和匹配模型必须与买家和空置率的正相关共同运动相一致——贝弗里奇曲线必须向上倾斜。本文提供的证据表明,购房者和空置率确实在房地产周期中呈正相关,即房地产市场的贝弗里奇曲线是向上倾斜的。利用空置率和待售时间的数据,我们为买家构建了一个序列,并估计了贝弗里奇曲线的斜率。这种方法只需要一个最小的结构假设:存在一个匹配函数。回归结果证实,在商业周期中,购房者与空置率之间存在正相关关系。此外,我们提供了相对于买家的空缺弹性的估计。空置房每增加1%,买家就会增加约2%,这证实了最近的发现,即买家比待售房屋更不稳定。我们希望这一估计将有助于未来这一领域的研究人员。
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引用次数: 2
期刊
Real Estate eJournal
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