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Valuation Accuracy: Reconciling the Timing of the Valuation and Sale

Author

Listed:
  • Neil Crosby

    (Department of Real Estate & Planning, University of Reading Business School)

  • Steven Devaney

    (Department of Real Estate & Planning, University of Reading Business School)

  • Tony Key
  • George Matysiak

    (School of Real Estate & Planning, University of Reading Business School)

Abstract
Carsberg (2002) suggested that the periodic valuation accuracy studies undertaken by, amongst others, IPD/Drivers Jonas (2003) should be undertaken every year and be sponsored by the RICS, which acts as the self-regulating body for valuations in the UK. This paper does not address the wider issues concerning the nature of properties which are sold and whether the sale prices are influenced by prior valuations, but considers solely the technical issues concerning the timing of the valuation and sales data. This study uses valuations and sales data from the Investment Property Databank UK Monthly Index to attempt to identify the date that sale data is divulged to valuers. This information will inform accuracy studies that use a cut-off date as to the closeness of valuations to sales completion date as a yardstick for excluding data from the analysis. It will also, assuming valuers are informed quickly of any agreed sales, help to determine the actual sale agreed date rather than the completion date, which includes a period of due diligence between when the sale is agreed and its completion. Valuations should be updated to this date, rather than the formal completion date, if a reliable measure of valuation accuracy is to be determined. An accuracy study is then undertaken using a variety of updating periods and the differences between the results are examined. The paper concludes that the sale only becomes known to valuers in the month prior to the sale taking place and that this assumes either that sales due diligence procedures are shortening or valuers are not told quickly of agreed sale prices. Studies that adopt a four-month cut-off date for any valuations compared to sales completion dates are over cautious, and this could be reduced to two months without compromising the data.

Suggested Citation

  • Neil Crosby & Steven Devaney & Tony Key & George Matysiak, 2003. "Valuation Accuracy: Reconciling the Timing of the Valuation and Sale," Real Estate & Planning Working Papers rep-wp2003-06, Henley Business School, University of Reading.
    • Handle: RePEc:rdg:repxwp:rep-wp2003-06
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    Cited by:

    1. Chihiro Shimizu & W. Erwin Diewert & Kiyohiko G. Nishimura & Tsutomu Watanabe, 2015. "Estimating quality adjusted commercial property price indexes using Japanese REIT data," Journal of Property Research, Taylor & Francis Journals, vol. 32(3), pages 217-239, September.
    2. Steven Devaney & Roberto Martinez Diaz, 2011. "Transaction based indices for the UK commercial real estate market: an exploration using IPD transaction data," Journal of Property Research, Taylor & Francis Journals, vol. 28(4), pages 269-289, June.
    3. Kucharska-Stasiak Ewa, 2018. "15 Myths about Market Value," Real Estate Management and Valuation, Sciendo, vol. 26(3), pages 113-121, September.

    More about this item

    JEL classification:

    • R3 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Real Estate Markets, Spatial Production Analysis, and Firm Location

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