Valuation Standards & Methods Explained

A professional real estate appraisal aims to determine a property's true value in an objective, evidence-based, and scientific manner. Two things make this possible: standards that define the rules of engagement, and methods used to calculate value. Understanding both helps you know what to expect from an appraisal — and why the result is far more reliable than an agent's estimate.

1. Valuation Standards: IVS / UDS

In Turkey, real estate appraisal is governed by the Capital Markets Board (SPK) and conducted in accordance with International Valuation Standards (IVS) — known locally as UDS (Uluslararası Değerleme Standartları). These standards exist to ensure that valuations are transparent, consistent, and trustworthy wherever in the world the report is presented.

Two principles are non-negotiable under IVS:

• Independence and Impartiality: The appraiser must form an objective opinion based solely on market evidence, entirely free from external pressure. The report reflects market value — not the value the client hopes for.
• Professional Due Diligence: Reports must be complete, accurate, and supported by sufficient research to substantiate the conclusion. Every data source, adjustment, and method applied must be clearly explained and justified.

An IVS-compliant valuation report is prepared in a language universally understood by banks, courts, and government institutions — giving it legal validity across Turkey and internationally.

2. The Three Valuation Approaches

Appraisers draw on three established approaches. The selection is not arbitrary — it is driven by the property type, the purpose of the valuation, and the quality of available data.

A. Sales Comparison Approach

Value is determined by comparing the subject property to similar properties that have recently sold in the same market. This approach answers the question: "What would a buyer pay in today's market?"

How It Works

• Recent comparable sales are identified and independently verified.
• Each comparable is adjusted for differences from the subject property — location, floor level, size, age, condition, view, and zoning status.
• Adjusted sale prices are analysed to derive a supportable value range and central tendency for the subject.

When It Is Used

The preferred method wherever sufficient market data exists. It is the primary approach for residential properties, serviced apartments, and land in active markets. Most foreign buyers purchasing in Antalya will see this approach applied to their property.

B. Income Approach

Value is derived from the present worth of future income the property is expected to generate. This approach asks: "What income stream does this asset produce, and what is that stream worth today?"

Key Methods

• Discounted Cash Flow (DCF): Projected net cash flows over a defined holding period are discounted to present value using a market-derived discount rate. The preferred method for hotels, mixed-use complexes, and large commercial assets.
• Direct Capitalisation: Stabilised net operating income is divided by a market-derived capitalisation rate. Efficient and reliable for simpler income-producing properties.
• Profits Method: Used for trading properties such as hotels and petrol stations, where the value is closely linked to business profitability rather than comparable rents.

When It Is Used

Office buildings, shopping centres, hotels, apartment complexes held as investments, and any property where income generation is the primary driver of value.

C. Cost Approach

Based on the principle that a rational buyer will not pay more for a property than the cost of acquiring an equivalent site and constructing a substitute building. Value equals land value plus depreciated replacement cost of improvements.

How It Works

• Land value is estimated separately, typically using the Sales Comparison Approach.
• The current replacement cost of the building is calculated at today's construction prices.
• Depreciation is deducted — accounting for physical deterioration, functional obsolescence (outdated design or layout), and economic obsolescence (external market factors).

When It Is Used

New or recently completed buildings, specialised properties with no rental market (schools, mosques, hospitals, industrial plants), and insurance valuations. Also used as a cross-check in complex assignments.

3. Reconciliation of Value Indicators

When more than one approach is applied, the appraiser arrives at different value indicators from each. These are not averaged. Instead, the appraiser reconciles them by asking:

• Which approach produces the most reliable data for this specific property?
• Why do the indicators diverge — and is the divergence reasonable?
• Which result best reflects the behaviour of buyers and sellers in this market?

The answer to these questions — supported by market evidence — produces a single, defensible final value. This reconciliation process is what makes a professional appraisal a scientifically grounded document rather than an educated guess.

Choosing the Right Approach

A quick reference guide:

• Apartment or villa in Antalya → Sales Comparison (abundant comparable data)
• Hotel, resort, or apart-hotel → Income Approach (DCF + Profits Method)
• Shopping centre or office building → Income Approach (Direct Capitalisation or DCF)
• New construction or specialist property → Cost Approach
• Complex commercial asset → Two or three approaches combined