An assessment of the relative impact of factors influencing inaccuracy in valuation

Purpose - To address the phenomenon of inaccuracy in real estate valuation successfully, it is imperative to ascertain the sources and how valuers are influenced. The purpose of this paper therefore is to identify and assess both the predictive and relative importance of the factors that significantly influence inaccuracy in residential property valuations in Lagos metropolis. Design/methodology/approach - Data obtained from 250 firms of Estate Surveyors and Valuers were analyzed by a combination of descriptive and inferential statistics including factor analysis, and correlation/regression analysis. Findings - The study identified: valuers' knowledge and experience; valuers' approach to valuation; and individual characteristics of valuers and valuation firms, in that order, as having significant influence on valuation accuracy in the study area. Originality/value - If valuers know the factors that significantly influence inaccuracy and understand how they are affected, it would be possible to reduce the incidence of inaccuracy, together with its potential grave consequences to the housing market in particular, and the economy as a whole.

[1]  Frederick Morrison Babcock,et al.  The appraisal of real estate , 1927 .

[2]  Elaine Worzala,et al.  Client pressure in the commercial appraisal industry: how prevalent is it? , 1997 .

[3]  C. A. Ajayi,et al.  Variance in residential property valuation in Lagos, Nigeria , 2011 .

[4]  Jim Berry,et al.  Valuation of residential property: analysis of participant behaviour , 1996 .

[5]  M. Omirin,et al.  Valuers’ and Valuation Firms’ Characteristics as Causes of Inaccuracy in Valuation in Nigeria , 2011 .

[6]  P. Mcallister.  Valuation accuracy: A contribution to the debate , 1995 .

[7]  Peijie Wang,et al.  Commercial property market prices and valuations: Analysing the correspondence , 1995 .

[8]  H. Kaiser.  The Application of Electronic Computers to Factor Analysis , 1960 .

[9]  T. Havard,et al.  Do valuers have a greater tendency to adjust a previous valuation upwards or downwards , 1999 .

[10]  G. Brown.  Property Investment and the Capital Markets , 1991 .

[11]  D. Geltner.  Estimating Market Values from Appraised Values without Assuming an Efficient Market , 2009 .

[12]  P. Wyatt,et al.  Variance in property valuations for commercial lending , 2002 .

[13]  D. J. Lord,et al.  The property market, property valuations and property performance measurement , 1985 .

[14]  Abdul-Rasheed Amidu,et al.  Client influence on valuation: Perceptual analysis of the driving factors , 2007 .

[15]  Edward J. Schuck,et al.  The influence of clients on valuations , 1999 .

[16]  M. Bartlett.  A Note on the Multiplying Factors for Various χ2 Approximations , 1954 .

[17]  Marvin L. Wolverton,et al.  The objective in valuation: a study of the influence of client feedback , 2000 .

[18]  Julián Díaz,et al.  How valuers use the value opinions of others , 1997 .

[19]  D. Parker.  A note on valuation accuracy: an Australian case study , 1999 .

[20]  Aspects of information processing in valuation judgement and choice , 1994 .

[21]  Julián Díaz.  How Appraisers Do Their Work: A Test of the Appraisal Process and the Development of a Descriptive Model , 2009 .

[22]  Residential valuation behaviour in the United States, the United Kingdom and New Zealand , 2002 .