Thailand Condo Due Diligence Checklist for Foreign Buyers

A condominium is the most familiar direct-ownership route for many foreign buyers in Thailand. That does not make every unit safe to buy. A beautiful Bangkok view or Phuket rental forecast cannot answer the questions that matter at transfer: Is there space within the building’s foreign-ownership quota? Does the seller hold a transferable title? Can the buyer prove that funds entered Thailand in the required form? Is the condominium juristic person financially healthy?

This checklist is designed for non-Thai buyers considering a completed or off-plan condominium. It is intentionally risk-first. Use it before paying a reservation fee, repeat it before signing the contract and close the remaining gaps before transfer at the Land Office.

Checkpoint 1: Confirm that the asset is legally a condominium

“Condo-style,” “residence” and “branded apartment” are marketing descriptions. Ask for evidence that the project is registered as a condominium under Thai law and that the selected unit has, or will receive, a condominium unit title. A hotel room, leasehold apartment or participation in a company is not the same legal asset.

Foreigners are generally restricted from owning land directly, apart from limited statutory routes requiring specialist advice. Avoid nominee arrangements intended to disguise foreign ownership.

Checkpoint 2: Verify space in the 49% foreign quota

Thai condominium law limits foreign ownership to no more than 49% of the total floor area of all units in the condominium. The official Thailand government foreign-ownership guide explains this ceiling.

Do not treat an agent’s message that “foreign quota is available” as final evidence. The condominium juristic person should issue the required certificate showing that the proposed transfer will remain within the foreign quota. The government’s document guidance identifies the juristic-person certification used for this purpose.

The quota can change as transfers are registered. The contract should state the ownership basis, who secures the certificate and what happens to the deposit if foreign-quota ownership cannot be registered.

Checkpoint 3: Trace the title and the seller

• Obtain a clear copy of the condominium unit title deed.
• Match the owner’s name and identity to the seller or authorised signatory.
• Confirm the unit number, area, floor and any registered appurtenances.
• Check mortgages, attachments, restrictions and other registered entries.
• For a corporate seller, verify incorporation, authority and beneficial ownership.
• For an attorney signing, review the Power of Attorney and Land Office form requirements.

A buyer-side Thai lawyer should conduct the title search and explain the result. If the measured area differs from the contract or marketing plan, understand how the price will be adjusted. Parking rights should also be described accurately; an assigned bay, a common-area right and a separately registered asset are not interchangeable.

Checkpoint 4: Preserve the foreign-currency evidence

A foreign purchaser commonly needs evidence that the purchase funds were remitted into Thailand in foreign currency and converted through a Thai bank for the stated property purpose. The precise evidence depends on the amount, bank and transaction. It may include a Foreign Exchange Transaction form or other bank-issued remittance certification.

Before sending money, ask the receiving bank and lawyer for the exact wording to put in the remittance instruction, the beneficiary account, currency, supporting contract and document that will be issued. The Thailand Board of Investment’s One Start One Stop Investment Center outlines foreign-exchange considerations, but your transfer file must meet the Land Office and bank requirements for the specific purchase.

Red flag: money is requested through an unrelated individual, an unverified overseas account or a payment route that will not produce evidence in the buyer’s name.

Checkpoint 5: Read the contract as an exit document

A reservation form can create real financial exposure even when it is only a few pages. It should identify the parties, exact unit, ownership basis, price, payment milestones, included items, refund conditions and deadline for the main agreement.

The Sale and Purchase Agreement should deal with title, foreign-quota availability, financing if relevant, inspection, default, late completion, transfer expenses, vacant possession and the removal of encumbrances. If the Thai and translated versions differ, determine which language governs. Do not rely on a sales-team translation of a clause that controls your deposit.

For an investment unit, test the contract against the exit plan. Are short stays legally and operationally permitted? Can the juristic person restrict letting? Is a guaranteed return backed by a creditworthy operator, and which expenses are deducted before payment? A rental-pool promise is not the same as ownership demand.

Checkpoint 6: Audit the condominium juristic person

The juristic person manages the common property and collects owner contributions. Its quality affects lifts, pools, security, insurance, repairs and eventually resale. Request and review:

• recent audited financial statements and budgets;
• common-fee and sinking-fund rates;
• owner arrears and collection policy;
• minutes of recent general meetings;
• planned capital works or special assessments;
• building insurance and significant claims;
• rules on pets, renovations, occupancy and rentals; and
• any material disputes with the developer, owners or contractors.

A low common fee is not automatically good. If income cannot maintain the façade, mechanical systems and waterproofing, owners may face deterioration or a large later assessment.

Checkpoint 7: Inspect the unit and the building

Visit at different times. Check noise, construction, lifts, waste areas, water pressure, air-conditioning drainage and access during heavy rain. Examine the unit for moisture, cracks, damaged windows and unauthorised alterations.

For a resale, confirm the inventory line by line. For a new unit, use a photographed handover report with deadlines. The contract should create a clear correction process before all leverage is released.

Checkpoint 8: Investigate an off-plan developer and project

For an uncompleted project, the due-diligence burden expands. Verify the developer’s legal entity, land rights, building permit, environmental approval where required, financing, project registration route and record of completing comparable developments. Review whether payments are linked to construction progress and whether the contract protects the buyer if approvals, specifications or delivery dates change.

Study the site around the sales gallery. Protected view claims should be tested against neighbouring plots and planning information. Ask which facilities are contractual, whether phases will share them, and how owners will fund maintenance once the developer leaves.

Checkpoint 9: Obtain a written transfer-cost calculation

A Thai property transfer can involve Land Office transfer fees and, depending on the seller and facts, withholding tax, specific business tax or stamp duty. Contract language may divide costs commercially between buyer and seller, but the official assessment follows applicable law.

Request a written estimate from the lawyer before signing and an updated Land Office calculation before completion. Include legal fees, bank charges, currency conversion, mortgage registration if financed, common-fee adjustments, sinking-fund contributions, utility deposits, furnishing and insurance in the total budget.

Checkpoint 10: Prepare the transfer pack early

The Land Office may require original passports, immigration or address details, bank evidence, foreign-quota certification, juristic-person debt clearance, title documents, contracts, marriage or spouse declarations and Powers of Attorney in prescribed form. Requirements differ with the parties and location.

Ask the acting lawyer to produce a transaction-specific checklist and confirm which originals, translations, certifications and signatures are required. If you cannot attend, the Power of Attorney should be prepared for the specific Land Office process—not adapted at the last minute from a broad online template.

Checkpoint 11: Model the rental without holiday-let assumptions

Thailand’s tourism appeal can encourage buyers to project nightly rates across the year. A condominium unit is not automatically licensed or permitted for hotel-style stays, and building rules may prohibit them. Use a lawful long-term rental case unless qualified advice confirms another operation.

Estimate rent from comparable occupied units, not asking prices. Deduct vacancy, leasing commission, local management, common fees, repairs, insurance, taxes and furniture replacement. A remote owner should also budget for inspections, emergency access and foreign-exchange costs.

Stop-and-investigate warning signs

• The ownership basis changes after the deposit is paid.
• The seller will not provide title or identity documents.
• Foreign-quota availability is promised but not documented.
• Funds must move through an unrelated third party.
• The juristic person will not release financial information.
• Guaranteed rent is described without an enforceable operating agreement.
• A company or nominee arrangement is presented as a workaround for land restrictions.
• Pressure to sign is justified by a “last unit” claim rather than evidence.

The file you should hold after transfer

Keep the updated title evidence, Land Office receipt, stamped or signed contracts, payment records, foreign-exchange documents, quota and debt-clearance certificates, inventory, keys, juristic-person registration and insurance. Store copies securely outside the property and retain the originals needed for eventual sale or repatriation of funds.

A careful Thailand condo purchase is built on documents that agree with one another: the unit title, foreign quota, remittance evidence, contract, physical unit and Land Office record. If one part cannot be verified, pause before the deposit becomes harder to recover.

Editorial note: Thai property, foreign-exchange, tax and Land Office requirements can change and vary by transaction. Obtain independent advice from a qualified Thai lawyer, the receiving bank, the condominium juristic person and the relevant Land Office.