Seller’s Liability for Hidden Defects Discovered After a Property Sale in Turkey

Introduction

A property may look perfectly normal when it is purchased and transferred at the Land Registry, yet serious problems may emerge months or even years later.

Water leakage may appear after the first heavy rain. Structural defects may only become visible after occupation. An unauthorised extension may later be discovered. The buyer may learn that parts of the property do not correspond with the approved architectural project, that the property lacks characteristics promised during negotiations, or that defects concealed behind walls, flooring or renovations existed before the sale.

The fact that a defect was discovered after completion of the property sale does not automatically release the seller from liability.

Under Turkish law, the seller may be responsible for physical, legal or economic defects that substantially reduce the property’s value or the benefit reasonably expected from it. Importantly, under the general rules of the Turkish Code of Obligations, the seller’s liability for defects does not necessarily depend on the seller having actually known that the defect existed.

Different rules may apply depending on whether the transaction is an ordinary sale between private individuals or a consumer transaction involving a professional seller, developer or construction company.

1. What Is a “Hidden Defect” in Turkish Property Law?

Under Article 219 of the Turkish Code of Obligations No. 6098, a seller is responsible where the property does not possess characteristics promised to the buyer or contains physical, legal or economic defects that eliminate or substantially reduce its value or the benefit reasonably expected from it. The same provision expressly states that the seller may be liable even where the seller did not know about the defect.

A hidden defect is essentially a defect that could not reasonably be discovered through an ordinary inspection when the property was acquired but becomes apparent later.

Possible examples in real estate transactions include:

• serious water or moisture penetration concealed by cosmetic renovation;
• defects in foundations, columns, roofing or structural elements;
• defective plumbing or electrical infrastructure hidden inside the building;
• major insulation problems;
• construction contrary to an approved architectural project;
• undisclosed structural alterations;
• defects substantially affecting the property’s intended use;
• serious deficiencies concerning promised technical characteristics;
• material differences between what was contractually represented and what was actually delivered; and
• certain legal or economic deficiencies materially affecting the property’s value or use.

Whether a particular problem legally constitutes a defect must be determined in light of the sale agreement, representations made before the sale, the property’s intended use and the reasonable expectations of the buyer.

2. The Seller Does Not Necessarily Escape Liability by Saying: “I Did Not Know”

This is one of the most important principles under Turkish sales law.

The Turkish Code of Obligations provides that the seller can be liable for qualifying defects even if the seller was unaware of their existence.

Therefore, a defence such as:

“I lived in the property for years and I never knew there was a foundation problem.”

does not, by itself, eliminate statutory liability for defects.

Knowledge becomes especially important for different reasons.

If the seller knew about the defect and deliberately concealed it, the buyer’s legal position becomes considerably stronger. In particular, statutory provisions protecting sellers in relation to notification periods, contractual exclusions of liability and limitation periods may no longer protect a seller who acted with gross fault.

3. What If the Buyer Could Have Seen the Defect Before Purchase?

A distinction must be made between visible and hidden defects.

Article 222 of the Turkish Code of Obligations provides that the seller is not liable for defects actually known to the buyer when the contract was concluded.

Furthermore, where a defect could have been discovered by sufficiently examining the property, the seller is generally liable only if the seller specifically undertook that such a defect did not exist.

For example, if a large crack is openly visible across a wall during several property inspections, it may be difficult for the buyer later to characterise the crack itself as a hidden defect.

However, the underlying cause may be a different matter.

A visible cosmetic crack and an undisclosed serious structural defect behind that crack are not necessarily legally identical.

This is why technical expert evidence is often decisive in property-defect litigation.

4. The Buyer Must Act Quickly After Discovering a Hidden Defect

Under the general Turkish Code of Obligations regime, buyers have important inspection and notification obligations.

Article 223 requires buyers to inspect the property as soon as reasonably possible according to the ordinary course of affairs and to notify the seller of defects within an appropriate period.

More importantly for hidden defects, where a defect could not have been discovered by an ordinary inspection and becomes apparent later, the buyer must notify the seller immediately after discovering it. Failure to do so may result in the property being treated as having been accepted together with that defect.

Therefore, a buyer who discovers significant water penetration, structural damage or another hidden problem should not simply wait for several months before taking action.

In practice, the safest approach is normally to document the defect immediately and make a provable written notification.

Depending on the circumstances, a notarised notice, registered communication or other provable written notification may be appropriate.

5. There Is an Important Exception Where the Seller Is Grossly at Fault

The notification defence is considerably weakened where the seller acted with gross fault.

Article 225 of the Turkish Code of Obligations provides that a seller who is grossly at fault cannot escape liability by arguing that the buyer failed to notify the defect within the required period.

The same principle applies to professional sellers in respect of defects that they should have known about.

This distinction is extremely important in hidden-defect litigation.

Suppose, for example, that a seller knows a property suffers from serious water leakage and paints the affected walls immediately before the sale to conceal the problem.

If the buyer discovers the leakage several months later, the seller may face substantial difficulty relying on procedural arguments concerning delayed defect notification.

Evidence that the defect was deliberately concealed can therefore transform the legal character of a case.

6. Can the Sale Contract Say “The Property Is Sold As Is”?

Such clauses require careful analysis.

Turkish law allows contractual allocation of defect liability in certain circumstances because the general defect-liability provisions are not entirely mandatory.

However, Article 221 of the Turkish Code of Obligations provides an important limitation: where the seller is grossly at fault in transferring the property with a defect, an agreement excluding or limiting defect liability is absolutely invalid.

Accordingly, a contractual statement such as:

“The buyer has inspected the property and accepts it in its present condition.”

does not necessarily provide complete protection to a seller who knew about a serious hidden defect and concealed it.

The circumstances surrounding the sale remain decisive.

7. What Rights Does the Buyer Have Against the Seller?

Where the statutory requirements for defect liability are satisfied, Article 227 of the Turkish Code of Obligations gives the buyer several alternative remedies.

The buyer may:

1. withdraw from the sale contract by offering to return the property;
2. retain the property and request a reduction in the purchase price corresponding to the defect;
3. request repair of the defect at the seller’s expense, provided that repair does not require disproportionate expense; or
4. request replacement with a defect-free equivalent where this is possible.

The buyer’s right to seek damages under general provisions is also expressly preserved.

In real estate disputes, the practically important remedies are usually:

withdrawal from the contract, reduction of the purchase price, repair costs and compensation.

Replacement with an equivalent property will naturally be impractical or legally impossible in many individual real estate sales.

8. Can the Buyer Cancel the Entire Property Sale?

Potentially, yes.

However, not every minor defect justifies reversing a completed property transaction.

Article 227 authorises the buyer to withdraw from the contract, but it also allows the court to order repair or a reduction in the purchase price instead where withdrawal would not be justified by the circumstances.

The seriousness of the defect therefore matters.

For example, a relatively inexpensive repair involving a minor plumbing problem would normally present a very different legal situation from:

• major structural instability;
• extensive undisclosed water damage;
• a substantial legal obstacle to the intended use of the property;
• serious construction contrary to approved plans; or
• defects reducing the property’s market value by a substantial percentage.

Accordingly, withdrawal is generally a much stronger argument where the defect materially affects the essence, use or economic value of the transaction.

9. Can the Buyer Keep the Property and Ask for Money Back?

Yes.

A buyer does not necessarily have to return the property.

Under Article 227, the buyer may retain it and request a reduction of the purchase price corresponding to the defect.

This remedy can be particularly practical where:

• the buyer still wants to live in the property;
• the defect can be repaired;
• reversing the title transfer would create disproportionate difficulties; or
• the defect has caused a measurable reduction in market value.

Expert appraisal evidence will normally become particularly important when determining the property’s value with and without the defect.

10. Can the Buyer Demand the Cost of Repairs?

Yes, subject to the statutory requirements.

Article 227 permits the buyer to require the defect to be repaired at the seller’s expense where repair does not require excessive expenditure.

Relevant costs might, depending on the particular case, concern works such as:

• waterproofing;
• roof repair;
• structural remediation;
• plumbing replacement;
• electrical repair;
• insulation;
• reinstatement of defective construction; or
• other technically necessary measures.

Before undertaking major repairs, however, evidence should be preserved carefully.

If the buyer completely repairs or destroys the defective area before the seller or an expert has an opportunity to inspect it, proving the original condition may later become substantially more difficult.

11. Can the Buyer Also Claim Damages?

Yes.

The statutory remedies concerning defects do not necessarily prevent an additional damages claim.

Article 227 expressly preserves the buyer’s right to damages under general provisions. Where the buyer withdraws from the sale, Article 229 further provides for restitution of the purchase price with interest, specified expenses and compensation for direct damage caused by the defective property; other losses may also be recoverable unless the seller proves absence of fault as provided by the statute.

Depending on causation and proof, a damages claim could therefore potentially involve consequences such as repair-related loss, certain additional expenses or other financial damage caused by the defect.

Each head of loss must nevertheless be individually established and causally linked to the defect.

12. What Is the Limitation Period Under the Turkish Code of Obligations?

This is one of the most critical points.

Under Article 231 of the Turkish Code of Obligations, unless the seller has undertaken liability for a longer period, claims arising from defects are generally subject to a two-year limitation period starting from transfer of the sold property, even where the defect appears later.

This means that the limitation period does not normally begin on the date when the hidden defect is discovered.

That distinction can surprise property buyers.

However, Article 231 contains an extremely important exception:

A seller who is grossly at fault in transferring the defective property cannot rely on the two-year limitation period.

Accordingly, whether the seller merely did not know about the defect or deliberately concealed it may become decisive not only for liability but also for limitation.

13. The Rules Are Different in Consumer Property Transactions

An additional legal regime applies where the transaction qualifies as a consumer transaction.

Under Law No. 6502 on Consumer Protection, a consumer is a person acting for non-commercial or non-professional purposes, while a seller is a person acting for commercial or professional purposes. The definition of goods expressly includes residential and holiday-purpose immovable property.

Therefore, for example, a residential property purchased by an individual from a professional developer or construction company may fall within the Consumer Protection Law.

A purely private sale between two individuals will not automatically qualify as a consumer transaction merely because the subject matter is a residence.

14. What Counts as a Defective Property Under Consumer Law?

Article 8 of Law No. 6502 adopts a broad concept of defective goods.

A property may be defective where it fails to correspond to the agreed model or characteristics, does not possess objectively expected qualities, does not possess characteristics stated in advertising or announcements, or contains material, legal or economic deficiencies reducing or eliminating benefits reasonably expected by the consumer.

This makes pre-sale material extremely important.

For example:

• brochures;
• online advertisements;
• technical specifications;
• architectural drawings;
• sales presentations; and
• written representations

may be relevant in determining what the buyer was legally entitled to expect.

15. Consumer Buyers Have Four Principal Remedies

Under Article 11 of Law No. 6502, where property constitutes defective goods, the consumer may choose between:

• withdrawal from the contract;
• retaining the property with a proportionate reduction of the purchase price;
• free repair where this would not cause disproportionate expense; or
• replacement with a defect-free equivalent where possible.

The consumer may also claim damages under the Turkish Code of Obligations.

Where free repair or replacement is selected for residential or holiday-purpose immovable property, the statutory provision requires the relevant remedy to be performed within a maximum of 60 working days after the request is directed to the responsible party.

16. A Five-Year Limitation Period Can Apply to Consumer Real Estate

The limitation rules under the Consumer Protection Law are especially important.

Article 12 provides that liability for defective residential or holiday-purpose immovable property is generally subject to a five-year limitation period beginning from delivery of the property.

For qualifying second-hand residential or holiday-purpose property sales under the consumer regime, the seller’s liability period cannot be less than three years.

Most importantly, where the defect has been concealed through gross fault or fraud, the special limitation provisions cannot be relied upon in the ordinary manner.

Therefore, determining whether the seller was acting professionally and whether the buyer was acting as a consumer can substantially change the applicable legal framework.

17. The First Six Months Are Also Important in Consumer Cases

Consumer law contains an evidentiary presumption in favour of the buyer.

Under Article 10 of Law No. 6502, defects appearing within six months of delivery are presumed to have existed at the time of delivery, unless this presumption is incompatible with the nature of the goods or the defect.

In such a situation, the burden of proving that the property was not defective at delivery rests on the seller.

For defects discovered considerably later, technical evidence concerning when and why the defect arose becomes especially important.

18. What Evidence Should the Buyer Preserve?

A hidden-defect case can be legally strong but evidentially weak if the buyer fails to document the property before repairs are performed.

The following material can be particularly important:

• the sale agreement;
• title deed records;
• the original property advertisement;
• WhatsApp and email communications;
• photographs and videos taken before purchase;
• photographs and videos showing the defect;
• architectural and approved construction projects;
• occupancy documentation;
• municipal records;
• technical inspection reports;
• independent engineering reports;
• appraisal reports;
• repair quotations and invoices;
• evidence of previous repair or concealment attempts;
• condominium management records;
• communications involving the previous owner; and
• witness evidence where relevant.

Where the defect is technically significant, obtaining an expert determination before changing the physical condition of the property can be critical.

19. Evidence That the Seller Knew About the Defect Can Change the Entire Case

Consider the following example.

A buyer purchases an apartment in Istanbul.

Six months later, heavy rain causes significant water to enter through an exterior wall.

During repair works, the buyer discovers that the same area had repeatedly been repaired and repainted immediately before the sale.

Former tenants state that the seller had previously been informed of the same problem.

Invoices reveal that waterproofing works had been performed one year earlier.

This case is legally very different from a situation in which both buyer and seller genuinely discovered an entirely unknown construction defect after the transaction.

Evidence of previous repairs, complaints, contractor communications or deliberate cosmetic concealment can support an argument that the seller knew about the defect and attempted to hide it.

That finding may directly affect notification defences, contractual exclusions of liability and limitation arguments under the Turkish Code of Obligations.

20. Does a Hidden Defect Automatically Mean the Seller Committed Fraud?

No.

A hidden defect and intentional deception are separate legal concepts.

A property may contain a hidden defect for which the seller is responsible under defect-liability rules even where the seller genuinely did not know that the problem existed. Article 219 expressly recognises liability even without knowledge.

Fraud or deliberate concealment requires an additional factual basis demonstrating intentional misleading conduct.

This distinction matters because proving deliberate concealment may provide the buyer with substantially stronger arguments concerning contractual exclusions, notification and limitation periods.

21. Is Mediation Required Before Litigation?

This depends on the legal nature of the dispute and the relief requested.

Consumer disputes before consumer courts are generally subject to mandatory mediation before litigation, subject to statutory exceptions. One of those exceptions concerns consumer disputes arising from rights in rem in immovable property.

Accordingly, the procedural route should be determined after identifying whether the buyer seeks monetary compensation, price reduction, contractual restitution, a remedy directly affecting title, or a combination of claims.

The characterisation of the requested relief can therefore have procedural consequences in addition to substantive ones.

Conclusion

Discovering a serious problem after purchasing a property does not necessarily mean that the buyer must simply bear the loss.

Turkish law provides significant remedies where a property contained a defect at the relevant time and that defect materially reduced its value, functionality or expected benefit.

Depending on the circumstances, the buyer may be able to:

• withdraw from the property sale;
• obtain a reduction of the purchase price;
• require repair;
• seek compensation;
• recover specified expenses; or
• rely on additional protections available under consumer law.

The most important legal questions are usually:

Was the defect already present when the property was transferred?

Was it visible or genuinely hidden?

Did the buyer know about it?

When was it discovered and when was the seller notified?

Did the seller know about the defect or deliberately conceal it?

Is the seller a private individual or a professional seller?

Is the buyer legally a consumer?

Which limitation period applies?

The answers to these questions can determine not only whether the seller is liable, but also which remedy should be pursued and whether the claim remains legally enforceable.

For this reason, hidden-defect property disputes should normally be assessed through the sale documents, technical evidence, property records, communications between the parties and the chronology of discovery and notification as a whole.