Data Selection as the Basis for Better Value Modelling

Zyga, Jacek

doi:10.2478/remav-2019-0003

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…For the purpose of analysing the transaction prices of the primary real estate market [26,29], a section of the database of the Register of Prices and Real Estate Values for the districts of Podgórze and Czyżyny, covering the period from September 2016 to August 2017 was obtained, in which the sale of apartments in both Example 1 and 2 was carried out. The data obtained from the register were compiled, outliers were eliminated and each property contained in the database was described in terms of the following characteristics: area, floor, number of chambers, unit price [23].…”

Section: Resultsmentioning

confidence: 99%

Organization of the Building Space of Developments and Its Impact on Residential Housing Prices

Preweda

Jasińska

2020

Sustainability

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This study has examined the process of urban space development in Krakow (southern Poland) using two developments as an example. The planning documents were analysed and spatial data obtained from the CAPAP (Centre for Spatial Analysis of Public Administration) project were processed. The data source for analysis comprised 2D outlines of certain buildings from the topographic object database (BDOT10k), elevation data from lidar aerial laser scanning at a density of 12 points per square meter and a numerical terrain model (NMT) with a one-meter mesh grid. In addition, existing models of the boundaries of the plots including their numbers and the ownership structure were used. On this basis, a digital mock-up of the analysed site was created. The issue surrounding the purchasing of these sites is interesting, since on the primary market, the apartments are bought long before the start of the first construction works. For this reason, the buyer is not necessarily aware of how the buildings surrounding his/her property will ultimately look, including whether or not they will obscure the sun’s rays. Until now, there has been no need to analyse the density of buildings, as there was no definitive impact of this feature on property prices; discussions were only held in relation to one of the developments built, as to how the sustainable development of the city should look. The positive actions applied during the implementation of the investment were detailed and the negative aspects of the resulting developments were identified. This allowed general analysis of land use development. The work used a model of regressive trees to determine the impact of certain attributes on the property prices.

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Section: Resultsmentioning

confidence: 99%

Organization of the Building Space of Developments and Its Impact on Residential Housing Prices

Preweda

Jasińska

2020

Sustainability

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“…Zyga deepened the relationship between estimate validity and comparable item similarities, showing that estimated prices using statistical approaches often 'do not always meet the requirements of statutory definition of market value' [36]. Moreover, the author stressed the need to apply statistical approaches to similarly preselected data sets with the object of the estimate, because 'for the purpose of real estate appraisal itself, the selection of data is more useful than searching for a price model' [37].…”

Section: Current Applications Of Similarity Coefficientsmentioning

confidence: 99%

An Integrated Procedure for Ex-Ante Evaluations of Refurbishment Costs in Healthcare Facilities

2020

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This paper focuses on the valuation of refurbishment costs for healthcare facilities. The determination of the more reliable approach for experimental verification is a research topic of great interest, especially because previous literature on the matter is limited. This study examines ex-ante cost valuations in the refurbishment of healthcare buildings while using similarity to estimate the costs that are based on the amount of already accomplished renovations. The methodology involved a desk analysis deter-mining the technical valuation of intervention needs, and similarity coefficient applications providing a refurbishment cost valuation. The application was conducted in the Friuli—Venezia Giulia Region in Italy, where hospitals show structural, layout, and plants deficits with respect to current regulations, and a technical deepening to identify critical issues is required to prepare a multi-year intervention plan. The case study results showed that this procedure requires little initial information to run analyses and its application can support investment budget planning purposes.

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