An Experimental Study on Property Valuation Accuracy in Indonesia: A Government Valuers' Perspective
DOI:
https://doi.org/10.61194/ijss.v6i2.1635Keywords:
Accuracy, Noise, Bias, Valuation, IndonesiaAbstract
Market value estimated by property valuers is essential as it is used for various purposes both in public and private sectors. Hence, the accuracy of market value estimate is of paramount importance. However, valuation involves subjectivity, so it is bound to suffer from errors. This study is aimed at studying such errors. For this purpose, this study uses a market price of a parcel of land in the southern part of Jakarta. This particular area was chosen due to its significant number of property transactions compared to other regions in Jakarta. Government valuers at the Ministry of Finance were invited to provide their value estimate of that property. They were only allowed to use a pre-made worksheet provided by the researchers. This study shows the estimated market value is around 16.9% of the market price. Differences in rank, experience, or neighborhood knowledge have no significant relation to the accuracy of market value estimate. Most participants can demonstrate that their market value estimates are relatively similar, showing low variation between valuers.
References
Abidoye, R. B., & Chan, A. P. C. (2018). Improving Property Valuation Accuracy: A Comparison of Hedonic Pricing Model and Artificial Neural Network. Pacific Rim Property Research Journal, 24(1), 71-83. https://doi.org/10.1080/14445921.2018.1436306
Abidoye, R. B., Huang, W., Amidu, A.-R., & Javad, A. A. (2021). An Updated Survey of Factors Influencing Property Valuation Accuracy in Australia. Property Management, 39(3), 343-361. https://doi.org/10.1108/PM-02-2020-0014
Adegoke, O. J. (2016). Effects of Valuation Variance and Inaccuracy on Nigerian Commercial Property Market. Journal of Property Investment & Finance, 34(3), 276-292. https://doi.org/10.1108/JPIF-08-2014-0056
Adilieme, C. M., Abidoye, R. B., & Lee, C. L. (2024). Examining the Valuation Process in a Low Transparent Property Market – Perspectives of Property Valuers in Nigeria. Property Management, ahead-of-print. https://doi.org/10.1108/PM-04-2024-0031
Ajibola, M., & Oletubo, A. (2011). Assessment of Accuracy of Valuation in the Property Market in Lagos Metropolis. Global Journal of Engineering and Technology, 4(1), 45-51. http://eprints.covenantuniversity.edu.ng/id/eprint/3703
Ali, H. M., Ling, G. H. T., Sipan, I., Omar, M., & Achu, K. (2020). Effects of Behavioural Uncertainties in Property Valuation. International Journal of Built Environment and Sustainability, 7(3), 69-79. https://dx.doi.org/10.11113/ijbes.v7.n3.557
Amidu, A.-R., Levy, D., & Bolomope, M. (2021). Conceptualising Valuation Quality in Practice: A Valuer Perspective. Journal of Property Research, 38(3), 213-237. https://doi.org/10.1080/09599916.2021.1930108
Amidu, A.-R., Levy, D., Bolomope, M., & Liman, H. S. (2024). Barriers in Achieving Quality Valuations: the New Zealand Perspective. Journal of Property Investment & Finance, ahead-of-print(ahead-of-print). https://doi.org/10.1108/JPIF-02-2024-0014
Amidu, A. R., Boyd, D., & Agboola, A. O. (2019). The Role of Knowledge in Valuation Practice: Expert Valuers’ Perceptions. Journal of Property Investment & Finance, 37(6), 524-540. https://doi.org/10.1108/JPIF-11-2018-0089
Andrade, C. (2020). The Limitations of Online Surveys. Indian journal of Psychological Medicine, 42(6), 575-576. http://dx.doi.org/10.1177/0253717620957496
Atilola, M. I., Ismail, A., Achu, K., & Ariffian, B. (2019). An Evaluation of Factors Causing Variance in Property Assessment. Planning Malaysia, 17(1), 82-93. https://doi.org/10.21837/pmjournal.v17.i9.588
Box, G. E. P. (1976). Science and Statistics. Journal of the American Statistical Association, 71(356), 791-799. https://doi.org/10.1080/01621459.1976.10480949
Cannon, S. E., & Cole, R. A. (2011). How Accurate Are Commercial Real Estate Appraisals? Evidence From 25 Years of NCREIF Sales Data. The Journal of Portfolio Management, 37(5), 68-88. http://dx.doi.org/10.2139/ssrn.1824807
Cheloti, I., & Mooya, M. (2021). Valuation Problems in Developing Countries: A New Perspective. Land, 10(12), 1352. http://dx.doi.org/10.3390/land10121352
Cheloti, I., & Mooya, M. (2023). Property Valuation Problems and Market Context – Evidence from Kenya. Journal of Property Research, 40(1), 76-100. https://doi.org/10.1080/09599916.2022.2119879
Chen, F.-Y., & Mak, M. Y. (2024). Client Influence or the Valuer's Behavior? An Empirical Study of Listed Companies' Valuation in Taiwan. Journal of Property Investment & Finance, 42(4), 348-364. https://doi.org/10.1108/JPIF-10-2022-0069
Crosby, N. (2000). Valuation Accuracy, Variation and Bias in the Context of Standards and Expectations. Journal of Property Investment & Finance, 18(2), 130-161. https://doi.org/10.1108/14635780010324240
French, N., & Gabrielli, L. (2004). The Uncertainty of Valuation. Journal of Property Investment & Finance, 22(6), 484-500. https://doi.org/doi:10.1108/14635780410569470
Geerts, M., vanden Broucke, S., & De Weerdt, J. (2023). A Survey of Methods and Input Data Types for House Price Prediction. ISPRS International Journal of Geo-Information, 12(5), 200. https://www.mdpi.com/2220-9964/12/5/200
Gorard, S. (2013). The Possible Advantages of the Mean Absolute Deviation 'Effect' Size. Social research update., 65(Winter 2013), 1-4. https://durham-repository.worktribe.com/output/1473101/the-possible-advantages-of-the-mean-absolute-deviation-effect-size
Hariharan GG, Walvekar, G., & Kakka, V. (2021). Private Real Estate: Valuation and Sale Price Comparison 2020. https://www.msci.com/documents/10199/939c40ef-1ad7-771e-2d9f-51cb3d281675
Kahneman, D., Sibony, O., & Sunstein, C. R. (2021). Noise: A Flaw in Human Judgment (1st ed.). Williams Collins.
Kok, N., Koponen, E.-L., & Martínez-Barbosa, C. A. (2017). Big Data in Real Estate? From Manual Appraisal to Automated Valuation. The Journal of Portfolio Management, 43(6), 202-211. https://doi.org/https://doi.org/10.3905/jpm.2017.43.6.202
Liman, H. S., Amidu, A.-R., & Levy, D. (2024). Approaches to Improving Valuation Decision-making: A review of the Literature. Journal of Property Investment and Finance. http://dx.doi.org/10.1108/JPIF-01-2024-0011
Mohammad, N. E., Ali, H. M., & Jasimin, T. H. (2018). Valuer's Behavioural Uncertainties in Property Valuation Decision Making. Planning Malaysia, 16. https://doi.org/https://doi.org/10.21837/pm.v16i5.428
Nasir, A. (2015). Valuation Variance of Commercial Properties in Malaysia. Pacific Rim Property Research Journal, 12(3), 272-282. https://doi.org/10.1080/14445921.2006.11104210
Pagourtzi, E., Assimakopoulos, V., Hatzichristos, T., & French, N. (2003). Real Estate Appraisal: A Review of Valuation Methods. Journal of Property Investment & Finance, 21(4), 383-401. https://doi.org/doi:10.1108/14635780310483656
Parker, D. (1999). A Note on Valuation Accuracy: An Australian Case Study. Journal of Property Investment & Finance, 17(4), 401-411. https://doi.org/10.1108/14635789910282807
Sabrina, H. (2021). The Online Questionnaire: General Guidelines. Journal of Kefaya for Language and Literature 1(1). https://asjp.cerist.dz/en/downArticle/919/1/1/238092
Setijono, D. (2025). Behavioural Shortcomings to Avoid in Asset Aaluation Using Comparable Method – Insights from A Survey Experiment. Journal of Property Investment & Finance, ahead-of-print(ahead-of-print). https://doi.org/10.1108/JPIF-08-2024-0099
Wardropper, C. B., Dayer, A. A., Goebel, M. S., & Martin, V. Y. (2021). Conducting Conservation Social Science Surveys Online. Conservation Biology, 35(5), 1650-1658. https://doi.org/https://doi.org/10.1111/cobi.13747



