Thailand property due diligence before you pay a deposit

A reservation payment changes the balance of a property deal. Before it is paid, you can still ask awkward questions, wait for a document, negotiate a due-diligence condition or walk away. Once the deposit is non-refundable, the same missing title or quota evidence becomes a problem you are trying to solve from inside the transaction.

Proper due diligence is a chain rather than a stamp that says 'clean'. The property has to match the right being sold; the seller needs authority to dispose of it; registered encumbrances must be understood; a foreign-freehold condominium needs a workable quota route; an off-plan project needs a credible land, company and approval trail; and the payment path must fit the future transfer.

This page is deliberately narrow. It is about the property and document checks to complete before committing a deposit, not about choosing the best Thai market or deciding whether freehold or leasehold suits you. For an actual transaction, Thai counsel should verify title, encumbrances and transfer eligibility against the current records and the current date.

For a completed condominium, start with the title for the actual unit. It should identify the registered owner and carry the record of registrable rights affecting that apartment. A land title for the site is an important project document, but it is not the same thing as the buyer's completed-unit title. In an off-plan transaction the individual unit title may not exist yet, which shifts the early work to the land, the project company, approvals and the contract promising the eventual transfer.

Next define the right being bought. A foreign buyer may be aiming for condominium ownership within the statutory foreign quota, or a different contractual right such as a lease. Due diligence does not need to re-argue the whole freehold-versus-leasehold question; it needs to establish what the seller promises to register and whether the documents support that route.

Seller authority is a separate test. The contracting seller should be the registered owner or have a documented legal path to dispose of the property. If a company signs, confirm its current status and the authority of the signatory. If an agent or attorney signs, inspect the power being relied on. A mismatch can have an innocent explanation, but an explanation without documents is not due diligence.

Then look for rights that travel with or obstruct the asset. A registered mortgage, lease or other third-party interest can affect how and when the unit can be transferred. A condominium resale also has a building-level administrative file: arrears need to be cleared and the juristic person provides certificates used at transfer. These checks answer different questions and should not be collapsed into a sales claim that the unit is 'clean'.

Off-plan property adds counterparty and project risk. You need to identify the landowner, the project seller and the relationship between them, then check the permissions appropriate to the project's stage and any environmental approval that is legally required. The objective is not to collect every document in Thailand; it is to establish that the promised unit has a credible legal path from today's land and project structure to the right the buyer expects to receive.

The word 'chanote' is used loosely in property conversations. For a completed registered condominium, what matters to the buyer is the individual condominium-unit title that records the owner and registrable dealings affecting that unit. The land title under the project remains important to the development, but it does not replace the completed apartment's own title.

A scan is a starting point, not a legal conclusion. The owner's details need to match the seller or connect to documented authority, and registered interests need to be checked against the current record. For a material transaction, Thai counsel should verify the title position with the Land Department rather than relying on a screenshot that could be incomplete or out of date.

Foreign quota is a building-level constraint. The Condominium Act caps foreign ownership at 49% of the aggregate floor area of all units, so quota is not simply a count of how many apartments have foreign owners. It can also change as transfers are registered. That is why 'this unit is foreign quota' is less useful than evidence showing that the building can still register the transfer when your deal closes.

At transfer, the condominium juristic person provides certificates used in the registration file, including evidence relevant to the foreign-ownership ceiling and clearance of common-area arrears. That official closing route is the benchmark. In an off-plan sale, a developer's promise to deliver foreign freehold should therefore appear in the contract and be re-tested before transfer rather than treated as permanently secured by an early sales statement.

Quota is only one part of eligibility. A foreign buyer also needs a remittance trail and banking evidence that fit the transfer route. The exact bank document can vary with the transaction and remittance method, so the receiving bank and the closing team should confirm the evidence before the first material payment, not after the money has been split across several transfers.

Start with the project company, not the logo on the brochure. Thailand's official company database can show whether the juristic person is active and provide registered details, capital information, filing history and available financial statements. Those records help identify the counterparty; they do not certify that the developer will finish the project or perform every contract.

Then connect the company to the land. A well-known development group may use a special-purpose project entity, while the landowner can be a related but different company. That can be a normal structure, but the buyer should be able to see how the contractual seller is entitled to develop and sell the project rather than being asked to infer it from a shared brand name.

Approvals are stage-specific. The Land Department's condominium-registration process relies on land documents, approved plans and building-related permissions before individual condominium titles can be issued. For an off-plan buyer, the practical question is which mandatory steps have already been completed, which remain outstanding and what the contract does if the project cannot move through the next one.

Environmental approval should be treated with the same precision. Where a project is legally subject to environmental assessment, the official ONEP database can be used to check the project, applicant and status. An approved assessment is not a financial audit or a completion guarantee; an outstanding required assessment is not something a buyer should convert into 'approved soon' without understanding the contractual risk.

Finally, compare the paper file with physical progress and the payment schedule. Previous handovers, the current construction state and the amount of buyer money requested before major milestones all add context. Renderings tell you the intended product. Due diligence is about whether the named parties and current approvals create a credible path to delivering it.