blog.cat.realestate7 min read8/23/2026

Apartment With Illegal Alterations: When a Transaction Is Canceled in Israel

An enclosed balcony, a relocated wall, or an incorporated storage room discovered after purchase does not automatically mean that the contract will be canceled. The decisive factors are the building permit, the municipal building file, the seller’s representations, and the extent to which the violation affected the transaction itself.

Numbers and facts

•1969 — the year the Land Law was enacted
•3 stages of property registration are specified by the Ministry of Construction
•From 2 apartments — a building is generally registered as a condominium
•Case No. 8068/11 — dispute concerning the sellers’ representation regarding the permit
•Case No. 3260/11 — compensation for breach of a sale agreement

Tabu Does Not Confirm the Legality of the Layout

A Tabu extract shows the registered rights to the property, but it does not replace an examination of the permits and the actual layout. The Ministry of Construction separately warns that the information in its information system does not constitute a certified extract or an official copy of registration under the Land Law, 1969. Therefore, a match between the owner’s name and the apartment number does not prove that an extension, the division of a room, or a change of use was authorized. Such an examination requires comparing the apartment with the permit, the approved plans, and the materials in the municipal building file.

What to Check Before Signing the Contract

First, obtain a Tabu extract and determine the property’s registration status; the government system shows three stages—parcelization, registration of a condominium, and registration of rights to the apartment. Next, inspect the building file held by the local planning authority: permits, approved drawings, applications for alterations, and information about enforcement proceedings. For example, the Tel Aviv Municipality allows users to inspect building files, search for applications and permits, and check building rights and applicable plans. A practical mistake made by buyers is comparing the listing only with the Tabu extract, without comparing the actual walls and areas with the approved plan.

What the Seller May Be Liable For

The key document is the sale and purchase agreement and the seller’s representations contained in it. In Case No. 8068/11, the agreement included a representation that the property had been built in accordance with the permit obtained and that the sellers were unaware of any building deviations; however, the permit itself was not attached to the agreement. In such a dispute, the court examines not only the wording of the agreement, but also whether a permit existed, whether the apartment complied with it, and what the seller knew about the violation. A clause stating that the buyer inspected the property does not turn an illegal extension into an authorized one: the significance of such a clause is assessed together with all the evidence.

When the Transaction May Be Canceled

The violation must be sufficiently material: for example, where the seller made a specific false representation, concealed a known deviation, or the property materially fails to conform to what was promised. In Case No. 5328/21, the Supreme Court upheld the finding that the contract was void based on the totality of the evidence, including its illegality; however, this does not mean that every partition automatically invalidates a sale. The court will consider the scale of the violation, whether it can be regularized, the content of the negotiations and the agreement, the parties’ knowledge, and how quickly the buyer acted after discovering the problem. The longer the buyer uses the apartment without objection or independently changes its condition, the harder it becomes to preserve a clear evidentiary record.

Compensation Instead of Returning the Apartment

If cancellation is disproportionate to the circumstances or the buyer wishes to keep the home, the dispute may be limited to monetary compensation. In Case No. 3260/11, the Supreme Court separately considered a claim for compensation for breach of a real estate sale agreement without seeking enforcement of the agreement or relief ancillary to cancellation. The amount claimed cannot be determined approximately: it will generally be necessary to document the costs of restoring the authorized condition, an attempt at legalization, and the violation’s effect on the property’s value. When the case materials do not substantiate a specific amount in shekels, it is safer not to promise fixed compensation.

FAQ

Can the transaction be canceled immediately after illegal alterations are discovered?

Not automatically. It is necessary to establish exactly what was unauthorized, how material the violation is, and what representations the seller made in the agreement or before it was signed. Before making a claim, it is useful to obtain the approved plan and a professional comparison with the actual condition.

Is a Tabu extract sufficient for checking an apartment?

No. Tabu confirms the registration of rights, not whether the internal layout complies with the building permit. Permits, plans, and enforcement information are checked separately in the building file and municipal planning systems.

What should be done if the seller claims to have known nothing?

Review the agreement, correspondence, previous plans, permit applications, municipal notices, and the nature of the work. The court assesses the seller’s actual knowledge based on the totality of the evidence, not only on the seller’s explanation after the transaction.

Can payment of the costs of legalizing the alterations be demanded?

Such a claim may be substantiated as part of the monetary loss, but it is first necessary to determine whether legalization is possible at all. A professional opinion, municipal documents, and substantiated expenses will be required; an approximate estimate alone is insufficient.

Who should compare the apartment with the approved plan?

A legal review of the agreement and rights does not replace a technical inspection. The apartment’s actual configuration should generally be compared with the approved plans by an appropriate professional, while preserving drawings, photographs, and written findings.

What to do next

After discovering a violation, the condition of the apartment should be documented, a Tabu extract, the municipal building file, and the approved plans should be obtained, and the seller should then be notified in writing of the identified nonconformity. Before choosing between cancellation of the transaction and compensation, it is important to separately assess the materiality of the violation, the possibility of legalization, and the substantiated expenses, without altering the disputed part of the apartment unless it is documented.