Net vs Gross Square Meters in Turkey: Why Property Sizes Can Look Different to Foreign Buyers

A property advertised as 120 m² in Turkey does not necessarily provide 120 m² of usable interior living space. Turkish property measurements can refer to net area, gross area or a broader general gross area that may include a share of common spaces. This is particularly important for foreign buyers because property measurement and marketing practices differ between countries. Before comparing property for sale in Alanya or elsewhere in Turkey, always ask what the advertised square-meter figure actually represents.

What Is the Difference Between Net and Gross Square Meters in Turkey?

The simplest distinction is that net square meters are closer to the space you can actually use inside the property, while gross measurements can include additional structural areas and, depending on the measurement being quoted, allocated shares of common areas.

However, there is an important detail: Turkish regulations distinguish between more than just "net" and "gross". The terminology includes net area, gross area, total gross area and general gross area. This is one reason why two apartments advertised with the same number of square meters can feel very different when you actually visit them.

What Is Net Square Meter (Net m²) in Turkey?

In simple terms, the net area of an apartment is the usable area measured within the property between the walls, subject to the exclusions defined by Turkish regulations.

Certain structural elements and voids are excluded from the official net-area calculation. Open balconies, terraces and similar spaces that are open on at least one side are also treated separately under the applicable definition.

For a buyer, net m² is therefore generally the most useful figure when trying to understand how much usable interior space an apartment actually provides.

What Is Gross Square Meter (Gross m²) in Turkey?

The gross area of an independent unit is broader than its net area. Under Turkish planning regulations, it is calculated according to the outer boundaries of the independent unit, subject to specific exclusions such as certain shafts, light wells, ventilation shafts and gallery voids.

Because walls and other elements affect this calculation, the gross figure will normally be higher than the net usable area.

What Is General Gross Area?

This is one of the most important concepts for foreign property buyers to understand.

Turkish regulations define the general gross area of an independent unit as its total gross area plus the share allocated to that unit from the building's common areas.

In a residential complex, common spaces can include areas associated with circulation and shared building facilities. Consequently, a broad gross figure can be considerably higher than the space that the buyer experiences inside the apartment.

This does not automatically mean that the advertised size is incorrect. It means that buyers need to understand which measurement definition is being used.

Example: Can a 120 m² Apartment Have Less Usable Space?

Yes. Consider a hypothetical apartment marketed as 120 m² gross.

Its actual net usable area might be considerably smaller after accounting for walls and other areas that do not form part of the net living space. There is no universal formula such as "gross minus 20% equals net". The difference varies according to the building design, wall thickness, layout, balconies, common areas and the specific gross-area definition being used.

For that reason, buyers should not assume that every 120 m² apartment in Turkey has approximately the same usable floor area.

Why Can Property Sizes in Turkey Look Different from Other Countries?

There is no single worldwide standard used in exactly the same way for every residential property advertisement.

For example, Germany has detailed rules for calculating Wohnfläche, including specific treatment of balconies, terraces and areas with restricted ceiling height. Professional measurement standards used in the UK and internationally also distinguish between different concepts of usable, internal and gross floor area.

This means that someone accustomed to buying property in Germany, the UK or another country should not automatically compare the square-meter figure from their home market with a Turkish gross m² figure.

The number may look the same, while the measurement basis is different.

Is Gross m² Misleading?

Not by itself. Gross area is a legitimate property measurement concept. The potential problem occurs when a buyer sees only a number such as "150 m²" without being told whether it represents net area, gross area or a broader gross measurement.

A transparent property comparison should therefore distinguish between the figures whenever reliable information is available.

Which Figure Should Foreign Property Buyers Compare?

If your objective is to compare how spacious different apartments actually are, start with the net usable area.

For example, when comparing two apartments for sale in Alanya, Apartment A might have a larger advertised gross area while Apartment B could have a more efficient floor plan and similar net usable space.

This is why square meters should always be considered together with the floor plan and actual layout.

5 Questions to Ask Before Buying an Apartment in Turkey

1. Is the advertised size net or gross?
2. What is the net usable area of the apartment?
3. Does the quoted gross area include a share of common areas?
4. How are balconies, terraces and additional spaces treated?
5. Can I review the approved architectural plan and available official property information?

These questions are particularly useful when following a property buying checklist in Alanya.

Why Is the Floor Plan Just as Important as the Number of Square Meters?

Two apartments with identical net areas can still offer very different living experiences.

Long corridors, awkward room shapes and inefficient layouts can reduce practical usability. An intelligently designed 90 m² apartment can therefore feel more spacious than a poorly designed property with a higher advertised area.

If you are comparing apartments for sale in Alanya and trying to choose the right property, examine the room dimensions and floor plan rather than relying solely on the headline m² figure.

Why Is This Especially Important When Buying Off-Plan Property?

When buying a completed apartment, you can physically inspect the rooms. With an off-plan development, your decision may depend heavily on plans, technical documents and sales information.

Buyers considering off-plan property in Alanya should therefore establish whether the stated area is net, gross or another measurement and review the architectural plans before making a decision.

Should You Check the Property Documents Before Buying?

Yes. The square-meter figure in a marketing advertisement should not be the only source used when evaluating a property.

Depending on the property, relevant plans, title information, permits and other official documentation can provide important information about what you are purchasing. Our guide to checking a property in Turkey before buying explains the wider due-diligence process.

Does a Bigger Gross Area Always Mean a Better Apartment?

No. A larger gross figure does not necessarily mean more usable living space.

When evaluating Alanya real estate, consider net usable area, room dimensions, layout, balcony and terrace usability, orientation, floor, building quality, common facilities and location together.

This is particularly relevant if you want to buy an apartment in Alanya and are comparing several developments where the method used to present property size may differ.

Net vs Gross m² in Turkey: Quick Comparison

Frequently Asked Questions

What does 100 m² gross mean in Turkey?

It does not necessarily mean 100 m² of usable interior space. The exact usable area depends on the property's design and on which gross-area definition is being quoted.

How do I find the real usable size of an apartment in Turkey?

Ask for the net area, review the floor plan and compare the information with the available approved architectural and property documentation.

Is there a fixed percentage difference between net and gross m²?

No. There is no reliable universal percentage that converts gross area into net area for every Turkish property.

Are common areas included in gross square meters?

They can be included when the figure being quoted is the general gross area. This is why the measurement basis should always be clarified.

Are balconies included in net m² in Turkey?

Open balconies and similar spaces open on at least one side are not included in the regulatory definition of the independent unit's net area.

Should I compare Turkish property size directly with property size in Germany or the UK?

Not without checking the measurement basis. Countries and professional standards can use different definitions and methods for reporting residential floor area.

Final Thoughts

When buying property in Turkey, never judge an apartment by the advertised square-meter figure alone. Ask whether the figure is net, gross or general gross, examine the floor plan and understand how much space you can actually use.

For foreign buyers comparing property for sale in Alanya, understanding this distinction makes it much easier to compare properties fairly and avoid surprises after viewing or purchasing an apartment.

Last updated: October 2026. Property measurements should be verified against the relevant approved plans and official documentation for the individual property.