My New Apartment Is Smaller After Urban Transformation in Turkey: What Can I Do? (2026 Updated Guide)

Is your replacement apartment smaller than promised after urban transformation? Learn how foreign property owners can check net and gross area, contractor agreements, approved plans, measurement differences, defects, compensation and legal remedies.

One of the most common disputes after an urban transformation project concerns the size of the replacement apartment. A property owner may surrender an old apartment, wait several years for reconstruction and then discover that the new apartment appears materially smaller than expected.

Sometimes the difference results from the distinction between net and gross area. In other cases, the approved architectural project differs from early promotional drawings. More serious disputes arise when the contractor has expressly promised a particular usable area but delivers a smaller independent unit.

The first question is therefore not simply whether the new apartment is smaller than the old apartment.

The critical question is:

What exactly was the contractor legally required to deliver?

The reconstruction agreement, technical specifications, allocation schedules, approved architectural plans, title documents and actual measurements should be examined together.

A reduction in area can potentially lead to claims concerning performance, defective or incomplete performance, compensation, price reduction or other contractual remedies depending on the agreement and circumstances.

For foreign owners, Lawyer Fırat Fesih Kaya recommends investigating the discrepancy before signing an unconditional delivery or acceptance document stating that the replacement apartment has been received without objection.

Your Old Apartment Size Is Not Always the Legal Benchmark

Many owners begin by comparing the old apartment with the new apartment.

For example:

“My old apartment was 120 square meters, but the new apartment is only 105 square meters.”

That comparison is important, but it does not necessarily determine the legal result by itself.

The reconstruction agreement may have provided for a replacement apartment of a specific size. Alternatively, it may have used a formula based on existing ownership shares, approved construction rights or a particular allocation plan.

The legal analysis should therefore begin with the promised replacement property rather than only the physical dimensions of the demolished apartment.

Read the Reconstruction Agreement First

The contractor agreement is usually the most important document in an apartment-size dispute.

Owners should identify every provision describing the replacement independent unit.

Does the agreement state a specific square-meter figure?

Does it specify net area?

Does it specify gross area?

Does it refer to architectural plans?

Does it identify the apartment by floor and number?

Does it incorporate an allocation schedule?

Does it permit changes required by the approved project?

Does it establish a tolerance for area differences?

These details can determine whether the contractor has complied with its obligation.

Net Area and Gross Area Must Not Be Confused

This is one of the most frequent sources of disagreement.

A contractor may describe an apartment as 130 square meters while the owner measures considerably less usable interior space.

That does not automatically establish a 20- or 30-square-meter shortage.

The contract may have used gross area rather than net usable area.

Gross calculations can include components that are not equivalent to the space an owner can physically use inside the apartment.

Therefore, the measurement method must be identified before comparing figures.

The Contract Should Ideally State Both Net and Gross Area

A well-drafted urban transformation agreement should avoid vague promises such as:

“The owner will receive an apartment of approximately 120 square meters.”

Instead, the agreement should define the relevant measurement.

Where possible, net and gross areas should be stated separately.

The agreement should also explain what happens if the final approved project produces a smaller independent unit.

Without this detail, a dispute can develop over what the parties actually meant by the promised square-meter figure.

Marketing Brochures Are Not the Same as a Binding Contract

Foreign owners may receive brochures, renderings, floor plans, messages or presentations during contractor negotiations.

These documents can be relevant evidence, but they should not automatically be treated as equivalent to the final contractual obligation.

Owners should determine whether the relevant plan or specification was incorporated into the signed agreement.

A contractor may argue that an early drawing was only preliminary and changed during the permit process.

The stronger the connection between the promised area and the executed contractual documents, the stronger the owner’s position generally becomes.

Check Every Annex to the Contractor Agreement

Important area information may not appear in the main contract.

It may instead be contained in an annex.

Owners should therefore obtain the complete signed agreement package, including allocation tables, architectural drawings, technical specifications, unit schedules and subsequent amendments.

A contractor should not be allowed to rely selectively on one document while ignoring another binding annex that describes the owner’s replacement property.

The documents should be interpreted together.

Check the Approved Architectural Project

The next major step is comparing the contract with the approved project.

The approved architectural plans can help determine what was legally authorized and what unit was ultimately constructed.

This can reveal several possibilities.

The contractor may have built exactly what the approved plan shows, but the approved plan may differ from the contractual promise.

Alternatively, the approved project itself may provide the promised area while the physical apartment has been constructed differently.

These are not the same legal problem.

A Smaller Approved Apartment Does Not Automatically Eliminate the Contractor’s Responsibility

A contractor may respond:

“The authorities approved a smaller apartment, so nothing can be done.”

That explanation should not automatically end the investigation.

The agreement must be reviewed to determine who assumed the risk of changes during the permit and approval process.

Did the contract expressly permit the contractor to change apartment sizes?

Was there a defined tolerance?

Did the owner approve a revised allocation?

Was the contractor required to preserve a minimum net area?

Was additional compensation required if the unit became smaller?

The fact that a revised plan received administrative approval does not by itself answer every private contractual question between owner and contractor.

Measure the Apartment Professionally

Visual impressions are not enough.

A newly constructed apartment can feel smaller because of different room proportions, thicker walls, columns, shafts or layout changes.

Before making a substantial legal claim, owners should consider obtaining a professional measurement.

The expert should identify the relevant measurement method and compare actual construction with the contractual and approved dimensions.

The resulting report can help establish whether a genuine shortage exists and how substantial it is.

Compare Like With Like

A common mistake is comparing the old apartment’s gross figure with the new apartment’s net figure.

That comparison can be misleading.

The same measurement methodology should be used where possible.

If the contract promised 100 square meters net, the relevant question is whether the delivered apartment satisfies that net-area obligation.

If the contract promised a particular gross measurement, that obligation should be analyzed using the appropriate gross-area definition.

Owners should therefore avoid relying solely on property advertisements or informal measurements.

How Much Difference Is Legally Significant?

There is no universal rule that every small numerical difference automatically produces the same legal remedy.

The significance of the shortage depends on the contract, measurement methodology, magnitude of the difference and effect on the property’s value and use.

A minor technical discrepancy may be treated differently from a substantial reduction that materially changes the apartment.

For example, losing a small fraction of expected area is different from receiving an apartment with a substantially smaller living room, missing room or significantly reduced usable area.

The economic consequences should therefore be assessed together with the numerical difference.

Floor, Orientation and Layout Matter Too

Area is not the only factor affecting the value of a replacement property.

Suppose the apartment has approximately the promised square-meter figure but is delivered on a different floor.

Or the orientation has changed.

Or a balcony has disappeared.

Or the room configuration is materially different.

The contractor’s performance should be compared with the complete contractual promise.

An apartment should not necessarily be evaluated solely by total area if other important characteristics were also guaranteed.

Commercial Properties Require Additional Analysis

The consequences can be even greater for commercial property owners.

A reduction in commercial floor area can directly affect rental value and business usability.

Frontage, ceiling height, entrance position, visibility and internal layout may be as important as total square meters.

A replacement commercial unit with approximately the same gross area may still have materially lower economic value if its usable retail space or frontage has been reduced.

The agreement and technical evidence should therefore be evaluated from a commercial perspective.

Check Whether Your Ownership Share Changed

Apartment area and ownership share are separate concepts.

An owner should therefore also review the new title structure.

The urban transformation process ultimately involves establishment of the new property regime and completion of the new building. Current official guidance confirms that after completion, the relevant condominium structure and occupancy procedures are finalized within the redevelopment process.

Owners should compare the new title documentation with the allocation promised under the reconstruction agreement.

A smaller apartment combined with an unexpected ownership-share change may require broader investigation than an area discrepancy alone.

Check Whether Other Owners Also Received Smaller Apartments

This can reveal whether the problem is individual or project-wide.

If every apartment became smaller because the approved project changed, the issue may involve the overall project structure.

If only one owner’s replacement unit is smaller while others received their agreed allocations, the dispute may involve incorrect allocation or contractor performance affecting that particular owner.

Owners should therefore compare the allocation schedule with the completed building.

However, another owner’s result does not automatically determine your rights. The individual contractual entitlement remains important.

Did the Owner Approve a Revised Project?

Contractors sometimes rely on later documents signed during construction.

An owner may have signed revised plans, meeting minutes, amendments or allocation schedules without appreciating that the replacement apartment area had changed.

These documents should be examined carefully.

The legal effect depends on what was signed, the authority of the person who signed it and whether the document genuinely modified the original agreement.

Foreign owners acting through representatives should also check whether the representative had authority to approve substantive changes to the replacement property.

A Power of Attorney Can Become Important

Suppose a foreign owner never personally approved the smaller apartment, but the contractor argues that the owner’s representative accepted the revised allocation.

The power of attorney should be obtained and compared with the document allegedly signed on the owner’s behalf.

Authority to attend an owner meeting does not necessarily answer whether the representative had authority to amend the owner’s contractual entitlement or accept a materially different replacement property.

The exact wording and legal effect of the authority should be reviewed.

Do Not Sign the Handover Record Without Checking the Apartment

The handover stage is critical.

Before signing a document confirming unconditional receipt, owners should compare the apartment with the contract and approved specifications.

The apartment should be inspected for area discrepancies as well as construction defects.

If a material difference is discovered, it should be documented.

Signing broad language stating that the property has been fully received in conformity with the agreement and that no claim remains can create avoidable disputes later.

The legal effect of any proposed handover or release document should therefore be understood before signature.

Take Measurements Before Final Acceptance

Where there is already concern about apartment size, measurement should ideally occur before unconditional acceptance.

The owner can preserve photographs, plans and measurements.

An independent technical professional can compare the actual unit with the relevant plans.

This creates contemporaneous evidence.

Waiting until substantial interior alterations have been made can make later factual disputes more complicated.

What If the Apartment Has Already Been Accepted?

Owners should not automatically assume that every possible right disappears merely because they have received the keys.

The legal position depends on the documents signed, the nature of the discrepancy, when it was discovered and the applicable contractual and legal rules.

The first step is to obtain the handover documentation.

Did the owner sign an unconditional release?

Were reservations recorded?

Was the size discrepancy apparent?

Was the owner given accurate information concerning the unit?

These questions can affect the available remedies.

Can the Owner Demand the Missing Square Meters?

Whether physical correction is possible depends heavily on the completed building and approved project.

After construction has been completed, adding several square meters to one apartment may be physically or legally impossible.

Walls, common areas, neighboring independent units and structural elements may prevent a simple physical correction.

For this reason, the remedy in an area-shortage dispute is not always literally adding the missing space.

Alternative contractual and financial remedies may need to be considered.

Can the Owner Request a Different Apartment?

Potentially, but this depends on the project and contractual structure.

If another suitable unit exists and the parties can reach an arrangement, substitution may provide a practical solution.

However, an owner does not automatically have an unrestricted right to select any other apartment in the completed building merely because an area dispute exists.

Ownership status, contractor allocations, third-party rights and the contract must be reviewed.

Can the Owner Request a Price Reduction or Compensation?

Depending on the facts and applicable legal basis, financial remedies may become relevant where the delivered unit does not conform to the agreed performance.

The financial effect should not necessarily be calculated by simply multiplying the missing square meters by an arbitrary figure.

Location within the building, floor, orientation, usable area and overall property value can matter.

A professional valuation may therefore be necessary to determine the actual economic loss.

Market Value Loss May Be More Important Than the Raw Area Difference

Imagine that an apartment is five square meters smaller than promised.

If those five square meters came from a secondary corridor, the value impact may be relatively limited.

If the reduction eliminates an important room, materially reduces the living area or affects a commercially valuable section, the economic impact may be greater.

Legal strategy should therefore consider both physical shortage and value reduction.

An expert valuation can help establish the difference between the property promised and the property delivered.

Can the Contractor Say “All Apartments Became Smaller”?

The contractor may argue that changes affected everyone equally.

That fact can be relevant, but it does not automatically resolve each owner’s contractual rights.

The contract must still be examined.

If every owner expressly approved a revised project, the legal position may differ from a situation where the contractor unilaterally reduced apartment sizes.

Collective project changes and individual contractual rights should therefore be analyzed together.

Majority Decisions Do Not Automatically Answer Every Contractual Dispute

Current official guidance confirms that where unanimity cannot be reached for new redevelopment applications, decisions can be made through the applicable simple-majority mechanism calculated according to ownership shares.

However, the existence of a majority decision does not automatically answer whether the contractor later delivered the specific replacement unit required by the executed agreement.

The redevelopment decision-making process and contractor-performance dispute are related but distinct legal questions.

Owners should therefore obtain both the majority-decision documents and their individual contractual documents where a disagreement arises.

What If the Contractor Claims the Owner Agreed to an “Approximate” Area?

Words such as “approximately” can create disputes.

The legal effect depends on the entire agreement and circumstances.

A contractor may argue that the wording permits reasonable construction variation.

The owner may argue that the final difference goes far beyond any reasonable tolerance.

The magnitude of the difference, surrounding documents, technical necessity and parties’ negotiations can therefore become relevant.

For future agreements, exact minimum net area provisions are significantly safer than vague approximate figures.

What If Columns and Structural Elements Reduced the Usable Space?

Urban transformation often produces a building that must satisfy current structural, fire-safety, accessibility and technical requirements.

This can change the internal configuration compared with the demolished building.

However, technical necessity and contractual responsibility are not automatically the same issue.

If the contractor promised a minimum usable area, the question remains whether the final design complied with that promise and whether the agreement allocated the risk of necessary design changes.

Technical explanation should therefore be considered together with contractual obligations.

What If the Apartment Is Larger in Gross Area but Smaller in Net Area?

This is a particularly important dispute.

A contractor may argue that the new unit satisfies the promised gross area even though the owner’s usable interior area has decreased.

The answer depends on how the agreement defined the promised property.

If only gross area was contractually guaranteed, the analysis differs from a contract that expressly promised a minimum net area.

This is why foreign owners should insist on seeing both figures before signing an urban transformation contractor agreement.

What If the Title Deed Shows a Different Area?

The title record should be reviewed, but owners should not rely on one title figure alone as a substitute for technical measurement.

Different documents may describe property characteristics for different legal or administrative purposes.

The contractual promise, approved project, title documentation and actual construction should therefore be compared systematically.

Where figures conflict, the reason for the discrepancy should be established rather than assuming one document automatically resolves the dispute.

Can the Contractor Be Required to Correct the Title or Project Documents?

If the physical apartment, approved project and title-related documentation are inconsistent, additional administrative or property-law issues may arise.

The appropriate correction depends on the source of the inconsistency.

Owners should determine whether the problem is physical construction contrary to the approved project, incorrect contractual allocation, inaccurate documentation or another issue.

A technical and legal review should generally precede any attempt to correct official records.

Do Not Rely Only on the Contractor’s Measurement

If a dispute has already arisen, independent measurement becomes especially important.

The contractor naturally has an interest in demonstrating compliance.

The owner should obtain objective technical evidence.

The measurement should identify the method used and the plans against which the apartment is compared.

A simple handwritten measurement of several rooms may not be sufficient for a significant claim.

Evidence Foreign Owners Should Collect

The owner should obtain the original title record, complete reconstruction agreement and every annex.

The file should also include the old apartment documentation, pre-demolition plans if available, the approved new architectural project, technical specifications, unit-allocation schedules and any amendments.

Marketing materials, emails and messages containing specific area promises should also be preserved.

The owner should obtain the new title documentation, handover record and professional measurement of the completed apartment.

Photographs and video can help document layout and construction conditions.

The objective is to establish a clear timeline showing what was owned, what was promised, what was approved and what was ultimately delivered.

Foreign Owners Living Abroad Should Act Before Signing Final Documents

A foreign owner does not necessarily need to travel personally merely to investigate an area discrepancy.

Appropriate legal and technical representation can be arranged.

However, the owner should avoid authorizing unconditional acceptance of the replacement property before the apartment has been checked.

Instructions to a representative should be clear.

If the owner believes the apartment is smaller than promised, the issue should be investigated before broad release, settlement or waiver language is signed.

2026 Practical Legal Strategy

The first priority is identify exactly what the contractor promised. Review the reconstruction agreement, allocation schedule, architectural annexes and technical specifications.

The second priority is determine whether the promised figure was net area, gross area or another measurement. Do not compare different measurement categories.

The third priority is obtain the approved architectural project and determine whether the permitted unit corresponds with the contractual promise.

The fourth priority is professionally measure the completed apartment using the appropriate methodology.

The fifth priority is compare the old property, promised replacement property, approved property and physically delivered property separately.

The sixth priority is check whether any later amendment or revised allocation was validly accepted. For foreign owners, this includes reviewing the authority of any representative who allegedly approved the change.

The seventh priority is avoid unconditional acceptance documents while the discrepancy remains unresolved.

The eighth priority is assess economic loss as well as physical area loss. Floor, orientation, layout and usability can materially affect the value of the replacement property.

The ninth priority is identify the appropriate remedy. Depending on the facts, this may involve demanding proper performance where possible, correction, a different contractual solution, financial reduction, compensation or other available remedies.

The tenth priority is preserve all evidence before making alterations to the new apartment.

The central principle is clear: a property owner should not accept the statement that a smaller replacement apartment is simply an unavoidable consequence of urban transformation. The decisive issue is whether the apartment delivered complies with the legally binding reconstruction agreement and project documents. Accurate measurement, contractual interpretation and valuation should come before deciding whether the owner has a viable claim.

Frequently Asked Questions

1. My new apartment is smaller than my old apartment. Does that automatically mean the contractor breached the agreement?

Not necessarily. The first question is what replacement property the reconstruction agreement required the contractor to deliver. The old apartment is important evidence, but the contractual entitlement must also be established.

2. What is the difference between net and gross apartment area?

Net area generally focuses more closely on usable space, while gross calculations may include additional building components depending on the applicable definition and documents. Owners should compare the same measurement category rather than comparing a gross figure with a net figure.

3. Can I measure the apartment myself?

You can make an initial measurement, but a professional technical measurement is preferable where a significant legal dispute is likely.

4. What if the approved project shows a smaller apartment than my contract?

The agreement should be reviewed to determine whether the contractor had authority to make the change and who assumed the risk of project modifications. Administrative approval of a project does not necessarily resolve every private contractual claim.

5. Can I claim compensation if the apartment is smaller?

Potentially, depending on the contract, size difference, legal characterization of the contractor’s performance and resulting economic loss. A valuation may be required.

6. Can I demand that the contractor physically add the missing square meters?

Physical correction may not always be legally or technically possible after completion. Other contractual remedies may therefore need to be considered.

7. What if I already signed the apartment handover document?

The document should be reviewed carefully. The legal effect can depend on its wording, whether reservations were recorded and the circumstances in which the discrepancy was discovered.

8. What if my representative accepted the smaller apartment while I was abroad?

The signed documents and the representative’s authority should be examined. The existence and scope of the power of attorney can be important.

9. Does a majority decision allow the contractor to reduce my apartment size?

A valid majority decision can govern important aspects of the redevelopment process, but it does not automatically resolve every subsequent dispute concerning whether the contractor complied with the binding reconstruction agreement. Current official guidance confirms that redevelopment decisions under the relevant framework are based on the applicable share-based majority mechanism.

10. What documents should I obtain before making a claim?

Obtain the reconstruction agreement and annexes, old and new title records, approved architectural plans, allocation schedules, technical specifications, later amendments, handover documents and an independent measurement report. Preserve written promises and project materials concerning the expected apartment as well.

Legal Assistance for Smaller Replacement Apartments After Urban Transformation

Receiving a smaller apartment after several years of urban transformation can create a substantial financial loss, particularly where the owner surrendered a valuable property based on a clearly defined replacement-unit promise.

The dispute should not be approached only by asking whether the new apartment “feels smaller.”

The original property, contractual promise, net and gross area definitions, approved architectural plans, final construction, ownership allocation and actual market-value impact should be compared systematically.

Foreign owners should investigate the issue before signing broad handover or release documents, particularly where the difference is significant.

Fırat Fesih Kaya Law Office provides legal assistance to foreign property owners and investors facing disputes concerning replacement apartments after urban transformation projects.

Lawyer Fırat Fesih Kaya assists property owners with reconstruction-agreement review, net and gross area disputes, smaller replacement apartments, project and title-document analysis, unauthorized project changes, technical measurement evidence, valuation disputes, contractor claims, compensation and post-construction urban transformation disputes.

Phone: +90 312 434 22 22
WhatsApp: +90 532 769 22 22
Email: info@firatfesihkaya.av.tr