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What happens when a Thai property deal goes wrong: the disputes lawyers see most, how demand letters, mediation and the courts work, and when settling wins.
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A property dispute in Thailand rarely starts in a courtroom. It starts with a deposit that is not returned, an off-plan condo that is a year late, a neighbour's fence on the wrong side of the boundary, or a seller who signed a contract and then stopped answering. By the time most people search for a lawyer, money has already moved and the other side has already gone quiet.
The legal work is about leverage and sequence: establishing what you can prove, putting the other side on formal notice, and then choosing between negotiation, mediation, and court. Most disputes never need a judgment to resolve. The ones that do are usually the ones where the evidence was thin or the claim was left too long.
If you are still before the purchase rather than after it, the cheaper path is prevention: the checks in our property due diligence guide exist because every item on that list is a dispute someone actually had.
Deposit not returned
A reservation or contract deposit the seller or developer keeps after the deal collapses. What matters is what the contract says about who could walk away and why. These often resolve at the demand-letter or negotiation stage once the contractual position is set out in writing.
Off-plan developer delay or non-delivery
The project is late, changed, or stalled. The contract's completion and termination clauses drive the claim, and a purchase from a developer can qualify as a consumer case, which changes how the court route works. Collective pressure from several buyers in the same project often shifts negotiations.
Boundary and encroachment problems
A wall, building, or fence that crosses the line the title deed describes. The title documents and survey history do most of the talking; a lawyer can advise whether a fresh boundary survey at the Land Office is worth requesting before anything is demanded.
Condo co-ownership and juristic person conflicts
Disagreements with the condominium juristic person or among co-owners over fees, common areas, or management decisions. These are governed by the building's rules and the condominium legislation, and often resolve through the juristic person's own processes before any court is involved.
Seller breach of a signed sale contract
A seller who refuses to transfer, sells to someone else, or fails a condition of the contract. The remedy depends on what the contract promises and what can still be performed. A lawyer can advise whether to press for the transfer itself or for money instead.
Warning: Preserve the evidence now, before you do anything else
Disputes are won on paper. Before contacting the other side, gather and back up the signed contracts and reservation forms, every payment receipt and bank transfer slip, the brochures or plans you were sold on, photos with dates, and the full LINE, email, or chat history with the seller, agent, or developer. Do not edit or annotate originals. A promise made in a chat message can matter as much as a clause in the contract, and messages have a way of disappearing once a dispute becomes formal.
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Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
International Legal and Cross-Border Business Advisory in Thailand and Asia
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
Every case is different, but the sequence a law firm works through is not. The steps below are the usual arc from first meeting to enforcement. How far down the list your dispute travels depends on the other side, and each step down it costs more and takes longer than the one before.
Case assessment
A lawyer reads the contract and the evidence, checks the other side's registered position, and gives you a view on the strength of the claim and what it is realistically worth pursuing. This is also where weak cases should be called weak.
Demand letter
A formal notice setting out the claim, the legal basis, and a deadline. It shows the other side that you have a lawyer and a documented position. A meaningful share of disputes end here, because ignoring a documented demand has consequences the other side's own lawyer will explain to them.
Negotiation and mediation
Direct negotiation between lawyers, or mediation through the courts. The Court of Justice runs mediation at no charge, both before a case is filed and during one, and a settlement reached through pre-filing mediation can be recorded as a court judgment, which makes it enforceable rather than just a promise.
Filing in court
If settlement fails, the claim is filed. Which court and which procedure apply depends on the dispute: a claim against a developer or business operator over goods or services can proceed as a consumer case, where the consumer is exempt from court fees. A lawyer can advise which route fits your facts.
Judgment and enforcement
Winning a judgment and collecting on it are separate jobs. Enforcement against a defendant's assets takes its own procedure, and a defendant with no reachable assets is a real risk a lawyer should assess before you sue, not after.
The question is not whether you are right. It is whether pursuing the claim leaves you better off after legal fees, your own time, and the wait for a judgment that must then be enforced. Thai law firms price dispute work in different ways, by the hour, by stage, or by fixed fee, and no official schedule fixes what a civil case costs or how long it takes, so treat any firm promise on either with caution.
That calculation is why the early, cheap steps matter so much. A demand letter and a mediation session cost little and settle a large share of disputes. Free court mediation in particular changes the maths for smaller claims that could never justify a full trial. A good dispute lawyer will lay out the settle-versus-sue arithmetic for your numbers before recommending court, and it is a fair test of any firm you talk to that they are willing to do so.
For a dispute with a developer or another business over goods or services, there is also a step before lawyers: a complaint to the Office of the Consumer Protection Board, which can be filed online through the OCPB complaint portal or by calling the 1166 hotline. It costs nothing and its fast-track channel puts the complaint in front of the business with a 14 day window to respond.
Early. The two mistakes that shrink recoveries are contacting the other side with threats or admissions before the position is assessed, and waiting so long that evidence goes stale and deadlines pass. An initial assessment is a small cost against either.
A property lawyer can assess the claim, send the demand, represent you in mediation, and run the case if it comes to that. If the dispute traces back to a purchase, the same firms handle property purchase work, and our guide to property disputes covers the legal background in more depth.
This page is general information, not legal advice. Whether a claim is worth pursuing, and which court or procedure applies, depends on your facts; for a specific case, speak with a qualified professional.
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Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
International Legal and Cross-Border Business Advisory in Thailand and Asia
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
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Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
International Legal and Cross-Border Business Advisory in Thailand and Asia
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
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