Duplex, Penthouse, Townhouse, and Villa in Turkey: Understanding the Differences

A duplex in Turkey is a two-level apartment connected by an internal staircase. A "garden" duplex (bahçe dubleksi) occupies the ground and lower levels with direct garden access, while a "roof" duplex (çatı dubleksi) comprises the top floor and the attic space. A penthouse is a top-floor apartment featuring a large terrace, often with exclusive roof access. Legally, these are market terms: in the Tapu, both duplexes and penthouses are registered as standard apartments (bağımsız bölüm) with a share in the land, whereas a villa may either be a unit within a complex or a detached house on its own private plot.

Common property terminology in Turkey

You will encounter a consistent set of terms in listings and from developers. Most of these do not have specific legal definitions, so it is essential to look beyond the name and review the project plans and the Tapu entry.

• Dubleks — A two-level apartment. Bahçe dubleksi: The lower level is in the basement or on the ground floor, and the upper level is on the first floor; the unit includes a garden or patio. Çatı dubleksi: The top floor of the building plus space within the roof volume (çatı piyesi), often featuring a terrace.
• Penthouse — An apartment on the top floor, typically with a large open terrace. In Turkey, this term is often used interchangeably with a roof duplex, so always confirm how many levels the property actually has.
• Tripleks — Three levels connected by internal stairs. This is usually a townhouse or villa, and less commonly, an apartment with a basement and attic.
• Müstakil villa — A detached house. It may stand on its own private plot or within a villa complex with a shared land area.
• İkiz villa — A semi-detached villa: two houses under a single roof sharing a common wall. Zoning regulations classify this as block housing (blok nizam).
• Sıra ev / townhouse — Houses arranged in a row with shared side walls. Each has its own entrance and usually a small garden.

If you are looking for a classic apartment for comparison, take a look at 3+1 apartments: they often offer the same floor space as duplexes.

Property types in the Tapu and building layouts

Almost all residential units in apartment buildings and complexes are regulated by the Condominium Law No. 634 (Kat Mülkiyeti Kanunu). An apartment is an independent unit (bağımsız bölüm) linked to a specific share of land, known as arsa payı. Until the building is officially completed, the Tapu shows "kat irtifakı" (construction servitude); once the occupancy permit is issued, it becomes "kat mülkiyeti" (full condominium ownership). For more details, see our article "TAPU in Turkey".

Key considerations for duplexes and penthouses:

• Attic spaces cannot be independent apartments. The Zoning Regulation (Planlı Alanlar İmar Yönetmeliği, Art. 40) allows only technical spaces or rooms connected to the top-floor apartment within the roof volume. By definition, the çatı piyesi (Art. 4) belongs to the apartment below and must be accessed from inside. Therefore, the upper level of a roof duplex is legally part of the same apartment and cannot be sold separately.
• The roof volume cannot be divided by additional floor slabs unless explicitly permitted by the zoning plan (Art. 40/8). A "third level" created by adding a slab under the roof ridge is a common sign of unauthorized alteration.
• The internal staircase to the çatı piyesi is not required to meet standard building code requirements for common staircase width or riser height (Art. 31/3). As a result, staircases in roof duplexes are often steep and narrow.
• A bahçe dubleksi garden is legally part of the common property. It becomes exclusively attached to an apartment only if recorded as an "eklenti" (appurtenance, noted in the "beyanlar" section of the Tapu, Art. 6 of Law No. 634) or if usage rights are defined in the management plan.

A detached villa on private land is registered differently: the owner holds the land title, and according to the Civil Code (Art. 684 and 718), the house is an integral part of it. There are no shared land stakes or co-owners. Foreigners may purchase such villas within general limits: no more than 10% of the private land in a district and a maximum of 30 hectares per person nationwide (Art. 35 of the Land Registry Law No. 2644).

Comparing property types: Pros and cons

A summary table and detailed breakdown follow below.

Garden duplex

Pros: private ground access, convenient for families and pets, cooler in summer, and the price per square meter is often lower than a penthouse. Cons: The basement level. Regulations require thermal and waterproofing for all basement floors sitting on the ground (Art. 51/6). However, in coastal areas, dampness is common after winter rains; always check for mold and musty odors. Gardens are often overlooked by neighbors' balconies, and unless it is legally registered as an eklenti, other residents may have a right to use it.

Roof duplex and penthouse

Pros: scenic views, a private terrace, no neighbors above, and more natural light. Cons: The roof. Roofs, chimneys, and shared terraces are legally common property under Law No. 634 (Art. 4). Roof repairs are funded by all owners proportional to their land share, but a leak primarily affects your apartment. The top floor heats up more in summer: check for roof insulation and the location of AC external units. Internal stairs may become difficult to navigate with age, and moving furniture to the upper level can be physically impossible.

Triplex and townhouse

Pros: The feeling of owning a house at a lower price point than a villa, with a private entrance. Cons: Three levels of stairs, limited garden space, and shared walls with neighbors. You cannot modify the facade, enclose a terrace, or build roof extensions without neighbor approval.

Villa

Pros: privacy, a private pool or garden, and full freedom of design. Cons: All maintenance—gardens, pools, pumps, and security—is either your responsibility or covered by high complex aidat fees. Detached villas are often located further from the sea and shops, making a car necessary. Semi-detached villas are more affordable, but shared walls and roofs often lead to the same management issues found in apartments.

Land, pools, and aidat: Ownership rights

In a residential complex (including villa complexes), owners hold common areas—gardens, pools, and pathways—proportional to their arsa payı (Art. 16, Law No. 634). This leads to three practical conclusions:

• The swimming pool "at the villa" within a residential complex belongs to you only if it is included in your independent unit as per the project or recorded as an eklenti (annex). Otherwise, it is a communal pool with assigned usage rights, and the rules are determined by the management plan (yönetim planı).
• Aidat (maintenance fee) is generally calculated based on the land share: insurance, repair of common areas, staff salaries, and utility systems are paid in proportion to the arsa payı (land share). Expenses for concierges, gardeners, and security are shared equally by the owners by default (Art. 20). Therefore, penthouses and villas with larger land shares pay higher fees unless the management plan states otherwise. This plan can only be modified with a 4/5 majority vote from the owners (Art. 28). You cannot opt-out of paying, even if you do not use the pool or elevator (Art. 20). For more details, see our article "Aidat in Turkey".
• A detached villa does not have an aidat, but the owner is solely responsible for all maintenance: pool cleaning, landscaping, waste disposal, and repairs.

Renting out your property: where the type matters

For daily and short-term rentals (up to 100 days), you must obtain a license from the Ministry of Culture and Tourism under Law No. 7464 (Art. 2–3), effective as of January 1, 2024. The application requires a unanimous decision from all apartment owners in the building. In a complex with multiple blocks, you only need the consent of the owners in your specific block. In buildings with more than three apartments, a single owner cannot obtain a license for more than 25% of the total units.

In practice, this makes short-term rental of duplexes and penthouses in large buildings the most difficult: a single dissenting neighbor is enough to trigger a denial. A detached villa with no shared independent units is not subject to these restrictions. Long-term rentals do not face these limitations.

Taxes and Expenses

The property tax (emlak vergisi) for residential units is 0.1% of the tax value. In metropolitan municipalities, including the Antalya province (which includes Alanya), this rate doubles to 0.2% (Art. 8 of Law No. 1319). It is not calculated based on the purchase price, but on the tax value, determined by the cadastral land value per square meter and standard construction costs (Art. 29). Consequently, a large villa with a plot of land will incur significantly higher taxes than an apartment of the same market price. For 2026, the tax value is capped at no more than double the 2025 value (provisional Art. 23, amended by Law No. 7566). Taxes are paid in two installments: March–May and November (Art. 30).

High-value properties are subject to a separate "valuable housing tax" (değerli konut vergisi). In 2026, this applies to properties with a tax value exceeding 17,711,000 TL. The tax rates are 0.3%, 0.6%, and 1% on the excess amount, applied in brackets. If a person owns only one residential property in Turkey, they are exempt from this tax (per 2026 GİB guidelines).

What to check before buying

1. İskan: The occupancy permit (yapı kullanma izni) confirms the building complies with the original project. By law, without it, connecting the building to water, electricity, and sewage is prohibited (Art. 31 of Law No. 3194), and the kat irtifakı (construction servitude) cannot be converted into kat mülkiyeti (full ownership). See our article "İskan in Turkey".
2. Project Compliance: Compare the actual layout of the property with the approved architectural plans at the municipality. Enclosed terraces, living rooms in the basement, "third levels" under the roof, or unauthorized conservatories/pools are all considered kaçak yapı (illegal construction).
3. The "beyanlar" section in the Tapu: Since 2020, municipalities report building violations to the land registry. This note remains on the Tapu (title deed) until the violation is resolved (Art. 32 of Law No. 3194). This section also lists any eklenti, such as gardens, parking spaces, or storage units.
4. Building Alterations: Any structural change to an approved building requires a new permit (Art. 21). Alterations to common areas—the roof, garden, or facade—require written consent from 4/5 of the owners (Art. 19 of Law No. 634). If a violation is not corrected within a month, the municipality may demolish the addition at the owner's expense (Art. 32), and fines are calculated per square meter of the violation (Art. 42).
5. Management Plan: This document dictates how the aidat is split, which areas (like gardens or pools) are assigned to specific units, and whether short-term rentals are permitted.

You can find various property types in our Turkey real estate catalog.

Frequently Asked Questions

What is a duplex in Turkey in one sentence?

It is a single property spread across two levels connected by an internal staircase, recorded in the Tapu as one independent unit with its own land share.

How does a penthouse differ from a roof duplex?

A penthouse is typically an apartment on the top floor with a terrace, while a roof duplex adds an extra level directly under the roof structure. Sellers often use these terms interchangeably, so always review the floor plan.

Can I buy the attic space above an apartment separately?

No. Attic spaces cannot be independent apartments; legally, they belong to the top-floor unit.

Does the garden of a garden-duplex belong to me?

Only if it is specified as an eklenti in the Tapu or designated as such in the management plan. Otherwise, it is considered communal property.

Why is the aidat higher for a penthouse?

Most expenses are, by default, split according to the land share, and a penthouse usually holds a larger share of the land.

Sources

• Kat Mülkiyeti Kanunu No. 634 (mevzuat.gov.tr)
• Planlı Alanlar İmar Yönetmeliği (mevzuat.gov.tr)
• İmar Kanunu No. 3194 (mevzuat.gov.tr)
• Emlak Vergisi Kanunu No. 1319 (mevzuat.gov.tr)
• Değerli Konut Vergisi Rehberi 2026 (gib.gov.tr)
• Law No. 7464 on Tourism Rentals (mevzuat.gov.tr)
• Tapu Kanunu No. 2644 (mevzuat.gov.tr)
• Türk Medeni Kanunu No. 4721 (mevzuat.gov.tr)