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Comparing House Prices Across Regions and Time: An Hedonic Approach

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  • Robert J. Hill

    ()
    (School of Economics, The University of New South Wales)

  • Daniel Melser

    ()
    (Moody’s Economy.Com)

Abstract

Panel hedonic comparisons can be made using the region-time-dummy method. This method is a natural extension of the well known time-dummy and region-dummy methods which have been used extensively in the hedonic literature. We show that these methods are all affected by substitution bias, which can seriously distort their results. We propose an alternative approach that is free of substitution bias which builds up panel comparisons from bilateral building blocks using the hedonic imputation method. This approach is very flexible. We consider a number of variants on this method, all of which are likely to be improvements on the unconstrained region-time-dummy method. We illustrate our findings using data for 14 regions in Sydney over a six year period. We find clear evidence of bias in the region-time-dummy results as well as in simple average measures such as the median that fail to adjust for quality change. For these reasons we favor the hedonic imputations approach.

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Bibliographic Info

Paper provided by School of Economics, The University of New South Wales in its series Discussion Papers with number 2007-33.

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Length: 32 pages
Date of creation: Nov 2007
Date of revision:
Handle: RePEc:swe:wpaper:2007-33

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Related research

Keywords: Hedonic regression; Quality adjustment; Housing; Price index; Substitution bias; Multilateral indexes;

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References

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  1. Pace, R Kelley, 1993. "Nonparametric Methods with Applications to Hedonic Models," The Journal of Real Estate Finance and Economics, Springer, vol. 7(3), pages 185-204, November.
  2. Carlos Martins-Filho & Okmyung Bin, 2005. "Estimation of hedonic price functions via additive nonparametric regression," Empirical Economics, Springer, vol. 30(1), pages 93-114, January.
  3. Silver, Mick & Heravi, Saeed, 2007. "The Difference Between Hedonic Imputation Indexes and Time Dummy Hedonic Indexes," Journal of Business & Economic Statistics, American Statistical Association, vol. 25, pages 239-246, April.
  4. Ariel Pakes, 2003. "A Reconsideration of Hedonic Price Indexes with an Application to PC's," American Economic Review, American Economic Association, vol. 93(5), pages 1578-1596, December.
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  7. Giles, David E. A., 1982. "The interpretation of dummy variables in semilogarithmic equations : Unbiased estimation," Economics Letters, Elsevier, vol. 10(1-2), pages 77-79.
  8. Hill, Robert J., 2003. "Constructing price indexes across space and time: the case of the European Union," GGDC Research Memorandum 200362, Groningen Growth and Development Centre, University of Groningen.
  9. Hill, Robert J, 1997. "A Taxonomy of Multilateral Methods for Making International Comparisons of Prices and Quantities," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 43(1), pages 49-69, March.
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  16. Kees Jan Van Garderen & Chandra Shah, 2002. "Exact interpretation of dummy variables in semilogarithmic equations," Econometrics Journal, Royal Economic Society, vol. 5(1), pages 149-159, June.
  17. Gaia Garino & Lucio Sarno, 2004. "Speculative Bubbles in U.K. House Prices: Some New Evidence," Southern Economic Journal, Southern Economic Association, vol. 70(4), pages 777-795, April.
  18. Hill, Robert J., 2000. "Measuring substitution bias in international comparisons based on additive purchasing power parity methods," European Economic Review, Elsevier, vol. 44(1), pages 145-162, January.
  19. Diewert, Erwin, 2007. "The Paris OECD-IMF Workshop on Real Estate Price Indexes: Conclusions and Future Directions," Economics working papers diewert-07-01-03-08-12-12, Vancouver School of Economics, revised 31 Jan 2007.
  20. Robert J. Shiller, 1991. "Arithmetic Repeat Sales Price Estimators," Cowles Foundation Discussion Papers 971, Cowles Foundation for Research in Economics, Yale University.
  21. Silver, Mick & Heravi, Saeed, 2001. "Scanner Data and the Measurement of Inflation," Economic Journal, Royal Economic Society, vol. 111(472), pages F383-404, June.
  22. Rosen, Sherwin, 1974. "Hedonic Prices and Implicit Markets: Product Differentiation in Pure Competition," Journal of Political Economy, University of Chicago Press, vol. 82(1), pages 34-55, Jan.-Feb..
  23. Englund, Peter & Quigley, John M. & Redfearn, Christian L., 1998. "Improved Price Indexes for Real Estate: Measuring the Course of Swedish Housing Prices," Journal of Urban Economics, Elsevier, vol. 44(2), pages 171-196, September.
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Cited by:
  1. Melser, Daniel & Syed, Iqbal, 2007. "Life Cycle Pricing and the Measurement of Inflation," MPRA Paper 16722, University Library of Munich, Germany, revised 07 Jul 2008.
  2. Iqbal Syed & Daniel Melser, 2008. "Prices over the Product Life Cycle: An Empirical Analysis," Discussion Papers 2008-25, School of Economics, The University of New South Wales.

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