Construction Cost / Building Class Calculator
Pick your building's height and quality tier and enter your total construction area — see which official building class you fall into and an approximate cost base based on the Turkish Ministry of Environment, Urbanization and Climate Change's 2026 m² unit-cost reference.
This is not the real construction cost — it is the official Turkish reference figure used to calculate permit fees and architecture/engineering service fees.
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Let's work out your project's real cost expectations togetherThis tool is based on Turkey's Ministry of Environment, Urbanization and Climate Change "Approximate Unit Construction Costs" communiqué, published in the Official Gazette on 3 February 2026 (VAT excluded, calculated including 15% overhead and 10% contractor profit). This is a Turkey-specific official reference figure — it does not apply outside Turkey. Real market construction cost varies with material quality, labor and site conditions, and these figures are updated annually.
What are "building class" and "approximate unit cost" for?
In Turkey, every building is placed into a building class (such as 3-A, 3-B, 3-C, 4-A, 4-B, 5-A or 5-B) under the annual "Building Approximate Unit Costs" communiqué that Turkey's Ministry of Environment, Urbanization and Climate Change publishes in the Official Gazette. This classification is tiered by building height and finish quality, and each class carries its own m² unit cost (in TL/m²).
The tool above shows which official building class your chosen height/quality tier falls into and the current 2026 m² unit cost, then multiplies it by your total construction area to produce a rough cost base.
Is this figure my actual construction cost?
No — and this is a common point of confusion. The m² unit cost published by the Ministry is, in essence, a reference figure used for official Turkish calculations such as building-permit fees and architecture/engineering service fees; it's derived by a standard method that adds 15% overhead and 10% contractor profit. Actual market construction cost — driven by the real quality of materials used, labor, site conditions and current market prices — can differ significantly (and is often considerably higher) from this official figure.
For that reason, the tool deliberately labels its result an "approximate cost base," not "your construction cost." This figure is specific to Turkey's official tariff system and has no meaning outside it.
What determines the building class
For housing, the primary factor is building height: buildings up to 3 storeys fall into class 3-A, those above 3 storeys and under 21.50 m into 3-B, 21.50-30.50 m into 3-C, 30.50-51.50 m into 4-A, and above 51.50 m into 4-B. Mixed-use complexes (residential + commercial) and specially finished/luxury housing are assessed in the higher 5-A and 5-B classes.
These figures are updated in the Official Gazette every year (sometimes twice a year); the 2026 figures in this tool are based on the communiqué dated 3 February 2026.
During the permitting process, MEEZ Mimarlık determines your project's correct official building class and helps you set a realistic cost expectation based on actual market conditions — not a rough official reference.
Contact usFrequently Asked Questions
What does a building class (like 3-A, 4-B or 5-A) mean?
It's an official classification published annually by Turkey's Ministry of Environment, Urbanization and Climate Change, tiered by building height and finish quality (3-A: up to 3 storeys, 3-B: above 3 storeys and under 21.50 m, 3-C: 21.50-30.50 m, 4-A: 30.50-51.50 m, 4-B: above 51.50 m, 5-A/5-B: mixed-use or specially finished/luxury). Each class has its own m² unit cost.
Is the m² unit cost in this tool my real construction cost?
No. This figure is essentially an official Turkish reference value used to calculate building-permit fees and architecture/engineering service fees (derived by a standard method that adds 15% overhead and 10% contractor profit). Actual market construction cost can differ significantly from this figure, depending on material quality, labor and site conditions.
How often are these figures updated?
The Ministry updates this table in the Official Gazette every year, sometimes twice a year. The figures in this tool are based on the communiqué dated 3 February 2026; official figures may change in later updates.
What building class does a detached villa fall into?
A detached villa or low-rise apartment building of up to 3 storeys generally falls into class 3-A. As the number of storeys and building height increase (or special/luxury finishes are added), the class rises to 3-B, 3-C, 4-A, 4-B, 5-A or 5-B.