Purchasing residential property directly from a contractor or off-plan from a developer in Turkey involves significant financial investment and complex legal procedures. Selecting a home should go beyond simply picking a floor plan or admiring a show apartment. The process is governed by Consumer Protection Law No. 6502, the Turkish Code of Obligations, the Turkish Civil Code, and zoning regulations.
At Mükyen İnşaat, we prioritize transparency and buyer security. In this guide, we break down the 10 critical legal, financial, and technical checks you must conduct when buying an apartment from a developer.
1. Developer's MÜBİS License and Financial Qualification
Verifying the developer's technical and financial capacity is the first step in securing your investment. Through the Contractor Information System (MÜBİS) managed by the Ministry of Environment, Urbanisation and Climate Change, a firm's license class and active status can be verified online.
MÜBİS licenses range from Class A to Class H based on financial turnover and technical capabilities. If a project's total construction area exceeds the developer's licensed capacity, local municipalities will not issue a Building Permit or will revoke an existing one, halting construction.
| Contractor Class | Construction Area Limit (m2) | Technical & Financial Capacity |
| Class A | Unlimited square meters | Highest turnover, completed track record, permanent technical staff |
| Class C / C1 | Up to 45,000 $m^2$ | Medium-high capital and technical infrastructure |
| Class F / F1 | Up to 5,000 $m^2$ | Small-to-medium residential projects |
| Class G / G1 | Up to 3,000 $m^2$ | Local and boutique residential developments |
| Class H | Max 1,000 $m^2$ per project | Entry-level developers, minimum capital requirement |
2. Land Share Construction Contract and Title Deed Status
The legal ownership of the plot must be verified at the Land Registry Office. Ensure the land is clear of mortgages, liens, or restrictive legal annotations.
Additionally, review the Land Share Construction Contract (APKİS) executed between the landowner and the developer. Under established Turkish Supreme Court precedents, good-faith buyers who acquire their title deeds through official registration are legally protected under Article 1023 of the Turkish Civil Code ("reliance on the title deed registry").
3. Building Permit and Approved Architectural Plans
A valid Building Permit (Yapı Ruhsatı) issued by the local municipality is mandatory. Buying a unit in a project without a building permit exposes you to illegal construction risks.
Furthermore, physical construction must strictly conform to the municipality-approved architectural plans. If shared spaces—such as underground parking, shelters, or green areas—are unlawfully converted into commercial or residential units by the developer, municipalities can issue demolition orders or cancel building permits.
4. Official Notary Form and Withdrawal Rights
Off-plan residential sales fall under the "Pre-paid Housing Sales" regime of Consumer Protection Law No. 6502. To be legally enforceable, sales contracts must be executed officially at a notary public. Private written contracts drafted outside a notary carry no legal validity for property title transfers.
Under the law, consumers have the right to withdraw from a pre-paid housing sales contract within 14 days of signing without stating any reason and without paying any penalty. Buyers also retain the right to rescind the contract at any point prior to physical delivery.
5. Mandatory Guarantees and Building Completion Insurance
For pre-paid housing projects, developers are legally required to provide at least one statutory guarantee mechanism before collecting advance payments or installments from buyers.
- Building Completion Insurance: In the event of developer insolvency or project abandonment, the insurance provider covers project completion or refunds buyer payments.
- Gradual Payment Structure: When corporate insurance guarantees are unavailable, payment schedules should be tied to physical construction milestones—such as foundation completion, structural shell completion, and final title transfer.
6. Net vs. Gross Square Metre Calculations
Discrepancies between advertised gross area and usable net area are a frequent source of buyer disputes. Advertised "General Gross Square Metres" often include external walls, elevator shafts, stairwells, and shared social facility shares. This can create a 30% to 50% gap between gross and actual usable space.
Under Turkish zoning regulations, calculations must be based on the Usable Net Floor Area (Sweepable Area) inside the apartment walls. Always verify the net area figures registered in the official municipality-approved Architectural Permit Project before buying.
7. Technical Specifications, Delivery Deadlines, and Delay Penalties
The Technical Specifications annex attached to the contract defines construction quality. Rather than vague descriptions like "1st class materials," the document should list specific brands, models, and quality standards for tiles, flooring, joinery, heating units, and fixtures.
The maximum legal delivery period for pre-paid housing is capped at 36 months from the contract date. The contract must include fixed monthly delay compensation or market-equivalent rent penalties payable by the developer in case of delivery delays.
| Legal Remedies | Legal Approach | Outcome |
| Specific Performance & Delay Penalty | Maintains delivery expectation. | Contract stays active; accumulated market rent loss can be claimed retroactively. |
| Refusal of Performance & Positive Damages | Delivery expectation is waived. | Buyer claims the price difference between current market value and contract price. |
| Rescission of Contract (Negative Damages) | Contract is terminated retroactively. | All past payments are refunded with statutory interest. |
8. Occupancy Permit (İskan) and Utility Registrations
An Occupancy Permit (İskan) is an administrative document confirming that the building was completed in full compliance with approved architectural plans, fire safety codes, and earthquake regulations. Buildings without an occupancy permit cannot establish individual residential utility subscriptions, forcing occupants onto expensive temporary construction tariffs.
Furthermore, a title deed cannot be converted from Construction Servitude (Kat İrtifakı) to Full Condominium Ownership (Kat Mülkiyeti) without an occupancy permit. The contract must explicitly obligate the developer to obtain the occupancy permit at their expense.
9. Handover Protocol and Conditional Acceptance
During physical handover, buyers should conduct a detailed technical inspection of the property. Plumbing, electrical panels, joinery, heating, and intercom systems must be tested for proper function.
All identified defects or incomplete work must be recorded in an official Handover Protocol. If the developer refuses to document defects, sign the handover sheet with an explicit written reservation (ihtirazi kayıt): "Accepted preserving all legal and administrative rights regarding defective and incomplete work."
10. Defective Work, Missing Work, and Statutory Limits
If the delivered unit fails to meet promised standards, statutory consumer rights take effect:
- Apparent Defects: Defects visible upon initial inspection; must be reported to the seller immediately upon handover.
- Hidden Defects: Issues that emerge over time or during seasonal changes (e.g., roof leaks or plumbing seepage); must be reported immediately upon discovery.
- Missing Work: Promised amenities specified in plans or brochures that were omitted entirely (e.g., generators, landscaping, or parking garages).
| Claim Category | Legal Basis | Statute of Limitations | Key Statutory Rules |
| Defective Work (Housing) | Law No. 6502 Art. 12 | 5 Years from delivery | Claims for defects hidden by gross negligence or fraud do not expire (extends up to 20 years). |
| Missing Work | Code of Obligations Art. 112 | 10 Years from delivery | Treated as breach of contract under general obligations law. |
| Max Repair Period | Law No. 6502 Art. 11 | 60 Business Days | Free repairs or replacement requests must be fulfilled within 60 business days. |
Conclusion
Successfully buying an apartment from a developer requires careful attention to administrative, legal, financial, and technical details. Conducting MÜBİS queries, verifying municipal building permits, insisting on notarized contracts, and ensuring clear net square metre definitions protects your investment against unforeseen risks.
At Mükyen İnşaat, we safeguard your property investments across all our developments through transparent permitting, guaranteed net square metres, and high construction standards.