Quality, Sources & Processing


Data quality has a direct impact on valuation accuracy, and it must therefore be reliable, accurate, openly available and lastly secure, as the corruption of data

increasingly becomes an issue. Valuers must be transparent about the quality of data to ensure that clients have sufficient understanding of the accuracy of the value and the valuation report.


Currently, valuers predominantly use primary (or ‘direct’) data sources, such as client, inspection and property analysis, complemented by market analysis and public sources. Here the challenge is often accessibility. The expert group noted that a client is not legally obliged to provide a valuer with all the information available.


Verifying, qualifying, classifying, calculating and analyzing data. This links back to the importance of data quality, as a higher level of uncertainty about the accuracy and reliability of the data gathered leads to a higher risk of inaccuracy in valuation outcomes, or ‘garbage in, garbage out’.


Indika Jayathilake

chairman/managing director

Chartered Valuation Surveyor



  • Member of Royal Institution of Chartered Surveyors (MRICS) Register Number 6698015
  • Member IRRV (Institute of Revenues Rating and Valuation)–United Kingdom 2016.
  • Life Member SLEA- Sri Lanka Economic Association-2016Register Number 43604
  • Fellow Member of Property Consultants Society of United Kingdom – 2018
  • Market Approach
  • Income approach
  • Cost approach


Market approach

The market approach provides an indication of value by comparing the asset with identical or comparable (that is similar) assets for which price information is available.


Income approach

The income approach provides an indication of value by converting future cash flow to a single current value. Under the income approach, the value of an asset is determined by reference to the value of income, cash flow or cost savings generated by the asset.


Cost approach

The cost approach provides an indication of value using the economic principle that a buyer will pay no more for an asset than the cost to obtain an asset of equal utility, whether by purchase or by construction, unless undue time, inconvenience, risk or other factors are involved.



Market value

Market value is the estimated amount for which an asset or liability should exchange on the valuation date between a willing buyer and a willing seller in an arm’s length transaction, after proper marketing and where the parties had each acted knowledgeably, prudently and without compulsion.

Market rent

Market rent is the estimated amount for which an interest in real property should be leased on the valuation date between a willing lessor and a willing lessee on appropriate lease terms in an arm’s length transaction, after proper marketing and where the parties had each acted knowledgeably, prudently and without compulsion.

Equitable value

Equitable value is the estimated price for the transfer of an asset or liability between identified knowledgeable and willing parties that reflects the respective interests of those parties.

Investment value (worth)

Investment value is the value of an asset to a particular owner or prospective owner for individual investment or operational objectives.

Liquidation value

Liquidation value is the amount that would be realized when an asset or group of assets are sold on a piecemeal basis. Liquidation value should take into account the costs of getting the assets into salable condition as well as those of the disposal activity.

Synergistic value

Synergistic value is the result of a combination of two or more assets or interests where the combined value is more than the sum of the separate values. If the synergies are only available to one specific buyer then synergistic value will differ from market value, as the synergistic value will reflect particular attributes of an asset that are only of value to a specific purchaser.

Indika Jayathilake Valuation & Real Estate Consultancy (Pvt

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