The Doctrine–Practice Gap in Real Estate Appraisal: A Structured Account of Functions, Boundaries, and Tensions

William Bert Craytor

doi:10.67330/x7pbfd13

著者

William Bert Craytor Author https://orcid.org/0000-0003-2219-9156

DOI:

https://doi.org/10.67330/x7pbfd13

キーワード:

不動産の鑑定評価、評価プロトコル、鑑定評価基準、 Appraisal Foundation（鑑定評価財団）、競売価値、鑑定評価の乖離、鑑定評価のためのProlog、市場価値の動態

要旨

不動産の鑑定評価(real estate appraisal)は、重大な公益に関わる位置を占めている。しかし、過去および現在の条件の下での市場価値意見(opinion of market value)を中心に据えるその公式理論(doctrine)は、鑑定評価の成果物が現代の金融パイプラインにおいて実際にどのように用いられているかとの間で、緊張を強めつつある。本論文はその論証を五つの段階にわたって組み立て、各段階に明示的かつ質問可能なProlog知識ベース(knowledge base)を対置する。初めの二段階は鑑定評価が果たす社会的機能と経済的機能を確立し、第三段階はその主たる最終成果物である市場価値意見を特定し、第四段階は計量的予測および金融的予測に対する鑑定評価の時間的・方法論的指向と、両者を隔てる規制上の境界とを検討する。これらは第五段階の中心的主張へと収斂する。すなわち、住宅ローン貸付において、融資比率(loan-to-value ratio, LTV)によって縮尺された市場価値は、将来の競売価値(foreclosure value)に対する暗黙の代理指標(proxy)として機能しており、これは現在価値理論が認めていない将来志向的な用法である。多くの鑑定評価者(appraiser)は、この担保評価上の役割を認識しておらず、その役割が要請するだけの将来の価値動向への慎重さをもって市場価値を扱っていない。本稿はまさにその問題を明るみに出し、さらなる研究を促すことを意図している。

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著者略歴

William Bert Craytor

Bert Craytor is a real estate valuation consultant specializing in statistical modeling and automated valuation methods. His work focuses on applying regression-based techniques — including MARS, GLM and GAM models — to residential and commercial appraisal. He is the developer of the earthUI, glmnetUI, and mgcvUI packages for R.

参考文献

Agarwal, Sumit, Itzhak Ben-David, and Vincent Yao. 2015. “Collateral Valuation and Borrower Financial Constraints: Evidence from the Residential Real Estate Market.” Management Science 61 (9): 2220–40. https://doi.org/10.1287/mnsc.2014.2002.

Alexandrov, Alexei, Laurie Goodman, and Michael Neal. 2023. Reengineering the Appraisal Process: Better Leveraging Both Automated Valuation Models and Manual Appraisals. Urban Institute. https://www.urban.org/sites/default/files/2023-01/Reengineering%20the%20Appraisal%20Process.pdf.

Basel Committee on Banking Supervision. 2017. Basel III: Finalising Post-Crisis Reforms. Standards No. d424. Bank for International Settlements. https://www.bis.org/bcbs/publ/d424.pdf.

Board of Governors of the Federal Reserve System. 2021. Dodd-Frank Act Stress Test 2021: Supervisory Stress Test Methodology. Board of Governors of the Federal Reserve System. https://www.federalreserve.gov/publications/files/2021-april-supervisory-stress-test-methodology.pdf.

Campbell, John Y., Stefano Giglio, and Parag Pathak. 2011. “Forced Sales and House Prices.” American Economic Review 101 (5): 2108–31. https://doi.org/10.1257/aer.101.5.2108.

Clauretie, Terrence M., and Nasser Daneshvary. 2009. “Estimating the House Foreclosure Discount Corrected for Spatial Price Interdependence and Endogeneity of Marketing Time.” Real Estate Economics 37 (1): 43–67. https://doi.org/10.1111/j.1540-6229.2009.00235.x.

Crosby, Neil, Colin M. Lizieri, and Patrick M. McAllister. 2010. “Means, Motive and Opportunity? Disentangling Client Influence on Performance Measurement Appraisals.” Journal of Property Research 27 (2): 181–201. https://doi.org/10.1080/09599916.2010.499014.

Deng, Yongheng, John M. Quigley, and Robert Van Order. 2000. “Mortgage Terminations, Heterogeneity and the Exercise of Mortgage Options.” Econometrica 68 (2): 275–307. https://doi.org/10.1111/1468-0262.00110.

Diaz, III, Julian, and Marvin L. Wolverton. 1998. “A Longitudinal Examination of the Appraisal Smoothing Hypothesis.” Real Estate Economics 26 (2): 349–58. https://doi.org/10.1111/1540-6229.00749.

Ebrahim, M. Shahid, and Sikandar Hussain. 2010. “Financial Development and Asset Valuation: The Special Case of Real Estate.” Journal of Banking & Finance 34 (1): 150–62. https://doi.org/10.1016/j.jbankfin.2009.07.011.

Eriksen, Michael D., Hamilton B. Fout, Mark Palim, and Eric Rosenblatt. 2019. “The Influence of Contract Prices and Relationships on Appraisal Bias.” Journal of Urban Economics 111: 132–43. https://doi.org/10.1016/j.jue.2019.03.001.

Foote, Christopher L., Kristopher Gerardi, and Paul S. Willen. 2008. “Negative Equity and Foreclosure: Theory and Evidence.” Journal of Urban Economics 64 (2): 234–45. https://doi.org/10.1016/j.jue.2008.07.006.

Foster, Chester, and Robert Van Order. 1984. “An Option-Based Model of Mortgage Default.” Housing Finance Review 3 (4): 351–72.

Friedman, Jerome H. 1991. “Multivariate Adaptive Regression Splines.” The Annals of Statistics 19 (1): 1–67. https://doi.org/10.1214/aos/1176347963.

Gallimore, Paul. 1996. “Confirmation Bias in the Valuation Process: A Test for Corroborating Evidence.” Journal of Property Research 13 (4): 261–73. https://doi.org/10.1080/095999196368781.

Geltner, David M. 1991. “Smoothing in Appraisal-Based Returns.” The Journal of Real Estate Finance and Economics 4 (3): 327–45. https://doi.org/10.1007/BF00161933.

Ghent, Andra C., Walter N. Torous, and Rossen I. Valkanov. 2019. “Commercial Real Estate as an Asset Class.” Annual Review of Financial Economics 11: 153–71. https://doi.org/10.1146/annurev-financial-110118-123121.

Griffin, John M., and Gonzalo Maturana. 2016. “Who Facilitated Misreporting in Securitized Loans?” The Review of Financial Studies 29 (2): 384–419. https://doi.org/10.1093/rfs/hhv130.

Hendershott, Patric H., and Edward J. Kane. 1992. Office Market Values During the Past Decade: How Distorted Have Appraisals Been? NBER Working Paper No. 4128. National Bureau of Economic Research. https://doi.org/10.3386/w4128.

Hendershott, Patric H., and Edward J. Kane. 1995. “U.s. Office Market Values During the Past Decade: How Distorted Have Appraisals Been?” Real Estate Economics 23 (2): 101–16. https://doi.org/10.1111/1540-6229.00660.

Hull, John C. 2018. Options, Futures, and Other Derivatives. 10th ed. Pearson.

International Association of Assessing Officers. 2017. Standard on Mass Appraisal of Real Property. International Association of Assessing Officers, Kansas City, MO. https://www.iaao.org/wp-content/uploads/Standard_on_Mass_Appraisal.pdf.

International Valuation Standards Council. 2025. International Valuation Standards (IVS). International Valuation Standards Council, London. https://www.ivsc.org/.

K’Akumu, Owiti A., and James E. Larsen. 2024. “A Primer on Regulations and the Practice of Residential Property Appraisal.” Journal of Real Estate Practice and Education, ahead of print. https://doi.org/10.1080/15214842.2024.2377869.

Kau, James B., Donald C. Keenan, Walter J. Muller, and James F. Epperson. 1995. “The Valuation at Origination of Fixed-Rate Mortgages with Default and Prepayment.” The Journal of Real Estate Finance and Economics 11 (1): 5–36. https://doi.org/10.1007/BF01097934.

LaCour-Little, Michael, and Stephen Malpezzi. 2003. “Appraisal Quality and Residential Mortgage Default: Evidence from Alaska.” The Journal of Real Estate Finance and Economics 27 (2): 211–33. https://doi.org/10.1023/A:1024728420837.

Lee, Ming-Hsiang, Chien-Wen Peng, and Hui-Fen Liao. 2020. “An Analysis of Objectivity in the Real Estate Appraisal Process.” International Real Estate Review 23 (4): 483–504.

Mayer, Yanling G., and Frank E. Nothaft. 2022. “Appraisal Overvaluation: Evidence of Price Adjustment Bias in Sales Comparisons.” Real Estate Economics 50 (3): 862–81. https://doi.org/10.1111/1540-6229.12351.

Murphy, Edward V. 2012. Regulation of Real Estate Appraisers. CRS Report No. RS22953. Congressional Research Service. https://sgp.fas.org/crs/misc/RS22953.pdf.

Office of the Comptroller of the Currency and Board of Governors of the Federal Reserve System and Federal Deposit Insurance Corporation and National Credit Union Administration and Consumer Financial Protection Bureau and Federal Housing Finance Agency. 2024. Quality Control Standards for Automated Valuation Models. Final Rule, 89 Fed. Reg. 64538 (Aug. 7, 2024). https://www.federalregister.gov/documents/2024/08/07/2024-16197/quality-control-standards-for-automated-valuation-models.

Pennington-Cross, Anthony. 2006. “The Value of Foreclosed Property.” Journal of Real Estate Research 28 (2): 193–214. https://doi.org/10.1080/10835547.2006.12091177.

Qi, Min, and Xiaolong Yang. 2009. “Loss Given Default of High Loan-to-Value Residential Mortgages.” Journal of Banking & Finance 33 (5): 788–99. https://doi.org/10.1016/j.jbankfin.2008.09.010.

Quan, Daniel C., and John M. Quigley. 1991. “Price Formation and the Appraisal Function in Real Estate Markets.” The Journal of Real Estate Finance and Economics 4 (2): 127–46. https://doi.org/10.1007/BF00173120.

Steurer, Miriam, Robert J. Hill, and Norbert Pfeifer. 2021. “Metrics for Evaluating the Performance of Machine Learning Based Automated Valuation Models.” Journal of Property Research 38 (2): 99–129. https://doi.org/10.1080/09599916.2020.1858937.

The Appraisal Foundation. 2024. Uniform Standards of Professional Appraisal Practice (USPAP), 2024 Edition. The Appraisal Foundation, Appraisal Standards Board, Washington, DC. https://www.appraisalfoundation.org/.

United States Code. 1970. Federal National Mortgage Association and Federal Home Loan Mortgage Corporation Charter Acts. 12 U.S.C. § 1717(b)(2) (Fannie Mae) and 12 U.S.C. § 1454(a)(2) (Freddie Mac).

United States Congress. 1989. Financial Institutions Reform, Recovery, and Enforcement Act of 1989. Pub. L. No. 101-73, 103 Stat. 183; Title XI codified at 12 U.S.C. §§ 3331–3356. https://www.govinfo.gov/content/pkg/STATUTE-103/pdf/STATUTE-103-Pg183.pdf.

United States Congress. 1998. Homeowners Protection Act of 1998. Pub. L. No. 105-216, 112 Stat. 897; codified at 12 U.S.C. §§ 4901–4910.

U.S. Department of Housing and Urban Development. 2013. Revision of Federal Housing Administration Policies Concerning Cancellation of the Annual Mortgage Insurance Premium. Mortgagee Letter 2013-04, Federal Housing Administration. https://www.hud.gov/sites/documents/13-04ml.pdf.