Bangkok Condo Reservation Agreements: Buyer Checks
A Bangkok condominium reservation agreement can feel like a small administrative step. In practice, it is often the first point where a foreign buyer’s money, timeline and legal risk become real. The amount may be modest compared with the full purchase price, but the document can shape the next negotiation, the refund position and the pressure to sign a larger sale contract.

This guide is for foreign buyers who are reserving a completed resale unit, a developer unit or an off-plan condominium. It is not legal advice, and the final agreement should be reviewed by a qualified professional where the buyer is committing meaningful funds. The practical aim is to slow the process down enough to prevent avoidable mistakes.
Confirm what is being reserved
The agreement should identify the exact project, building, floor, unit number, registered area or expected sale area, parking rights if any, furniture package if any, purchase price, payment schedule and expected transfer or contract date. If the buyer is dealing with a resale unit, check the title deed copy and owner’s identity. If the buyer is dealing with a developer, check the company name that will sign the later sale agreement.
Do not rely only on a sales sheet or chat message. The reservation document should match the unit the buyer actually viewed, including layout, view direction, included items and any agreed defects or repair promises. If the buyer is overseas, ask for dated video, current photos and a document set before sending funds.
Understand the deposit and refund terms
The most important clause is often the simplest: what happens to the reservation money if the buyer does not proceed? Some reservation fees are non-refundable except in narrow cases. Some are refundable if legal due diligence fails, financing is rejected, foreign quota is unavailable or the seller cannot deliver agreed documents. Some are credited to the purchase price only if the buyer signs by a fixed deadline.
Foreign buyers should ask for the refund logic in writing before payment. If a salesperson says the fee is refundable, that should appear in the agreement. If the buyer needs time to move foreign currency, obtain bank evidence, review a title deed or appoint a lawyer, the agreement should allow a realistic timeline.

Set a sensible due diligence window
A reservation agreement should give the buyer enough time to check the basics. For a resale unit, that means title, owner identity, foreign quota, mortgage or encumbrance status, juristic debt-free process, common fees, sinking fund, unit condition, tax and fee allocation, furniture inventory and transfer-day logistics. For a developer unit, it means project status, sale contract form, payment schedule, completion timeline, specification, common area obligations and developer track record.
The due diligence window does not need to be long, but it must be real. A buyer who signs a reservation on Friday and is asked to sign a sale contract on Monday may not have enough time to review documents properly. Overseas buyers also need to account for time zones, bank transfers, passport copies, notarised documents and adviser availability.
Check who receives the money
The agreement should state the receiving account and the name of the payee. Paying a developer, licensed broker, law firm client account or seller directly can have different implications. The buyer should understand who is holding the funds, whether a receipt will be issued, and how the payment will be treated if the deal does not proceed.
Avoid informal transfers to personal accounts unless the ownership and agency authority are fully understood. If the buyer is remitting funds from overseas, keep the bank record, transfer purpose and receipt. The purchase file should be clean from the first baht paid, not only from the final transfer day.
Watch for pressure clauses
Some reservation documents are designed to keep momentum, which is understandable. The risk is when momentum becomes pressure. Clauses to review carefully include automatic forfeiture, very short signing deadlines, vague references to a later contract, broad seller discretion, unclear repair obligations, no foreign-quota condition, and no path if due diligence uncovers a material problem.
Buyers should also avoid relying on verbal promises about rental guarantees, future resale value, view protection or renovation approval. If the promise affects the decision to reserve, it should be written clearly or treated as non-binding sales talk.

Completed, resale and off-plan differences
For a completed resale unit, the buyer can usually inspect the actual property and ask for current building documents. The reservation should focus on title, condition, transfer date, inclusions and document delivery. For a completed developer unit, the buyer should check the final specification, warranty position, common area readiness and any promotion terms.
For an off-plan unit, the reservation carries more forward-looking risk. The buyer is reserving a promise to deliver, not an asset that can be inspected in final form. Payment milestones, completion timing, specification changes, cancellation rights and developer obligations become more important. Off-plan buyers should be especially careful about assuming that a reservation fee is a low-risk placeholder.
Reservation checklist
- Match the project, unit number, area, price and included items to the viewed unit.
- Confirm whether the reservation fee is refundable and in which circumstances.
- Write a due diligence period into the timeline before the main sale contract.
- Check foreign quota, title, owner or developer identity and payment account.
- Keep bank records, receipts, passport copies and all signed versions in one file.
- Do not rely on verbal promises that are not reflected in the document.
Buyer takeaway
A reservation agreement is not just a receipt. It is the first control document in a Bangkok condo purchase. Foreign buyers should use it to secure the unit while preserving enough time to check ownership, documents, payment route and commercial terms. A careful reservation step makes the later sale contract cleaner and less stressful.
IBP can help foreign buyers review Bangkok reservation steps, coordinate document checks and compare purchase risks before funds are committed. Read our foreign buyer guides or contact IBP Real Estate for practical buyer support.
