Mediating a Phangan property dispute: the Dispute Mediation Act and compromise contracts

Can a property dispute on Koh Phangan be settled through mediation instead of going straight to [arbitration](/knowledge/arbitration-clause-thai-property-lease-disputes) or a lawsuit? Often, yes — for disputes over money owed, a construction defect, rent arrears, or a boundary or access disagreement short of a title contest. Thailand built two formal, low-cost mediation routes: the Dispute Mediation Act B.E. 2562 (2019), which created a standing out-of-court mediation system, and a Civil Procedure Code amendment adding Section 20 ter, a court-appointed pre-filing conciliation process. Both end, if successful, in a settlement a court can enforce exactly like a judgment.

What the Dispute Mediation Act actually covers — and what it can't touch

Section 20 of the Act sets the scope directly: it cannot be used for disputes over personal or family status, or disputes over ownership of immovable property itself. What it can cover instead: land disputes that don't concern ownership (a boundary encroachment's consequences, an access dispute, a lease or construction disagreement), disputes among heirs over how to divide inherited property, and other civil disputes up to ฿5 million (higher only if a royal decree raises the cap). That single carve-out matters more than any other clause in this guide — a genuine title fight over who owns a plot still has to go to court, no matter how much both sides would rather avoid it.

Compromise contracts: the underlying legal tool (CCC Sections 850–852)

Whatever forum produces the settlement, the Civil and Commercial Code's compromise-contract provisions are what actually give it legal force. Section 850 defines a compromise as a contract where the parties settle an actual or contemplated dispute by mutual concession. Section 851 makes it unenforceable by court action unless there is written evidence signed by the party who owes the obligation — an oral handshake settlement over a boundary dispute or unpaid renovation invoice isn't enough to sue on later if one side reneges. Section 852 spells out the payoff: a valid compromise extinguishes the claims each side gave up and confirms the rights each side kept — closing the door on reopening the same dispute afterward.

The Section 20 ter pre-filing route: mediation before you've even sued

The Civil Procedure Code Amendment Act (No. 32) B.E. 2563 (2020), in force since 7 November 2020, added a separate mechanism: before filing a lawsuit at all, either side can petition the competent court to appoint a conciliator. The court checks both parties are actually willing, then summons them and appoints a mediator — with no court filing fee for the mediation stage itself. If the parties reach terms, they submit them to the court, execute a written settlement agreement, and can ask the court to issue a judgment on those terms — an order the Act describes as final, save for fraud or a breach of law. For a landlord chasing rent arrears or a homeowner disputing a contractor's final invoice, this is often faster and cheaper than either arbitration (which needs a pre-existing arbitration clause) or a full civil suit.

• Title disputes are off-limits for Dispute Mediation Act mediation. Section 20 excludes ownership-of-immovable-property disputes outright — those still need a court injunction or full litigation, not mediation.
• A verbal settlement isn't enforceable. CCC Section 851 requires written evidence signed by the liable party before a compromise can be sued on — get it in writing even for a seemingly minor dispute.
• The Section 20 ter route needs no pre-existing clause, unlike arbitration, which only works if the contract already contains an arbitration agreement — mediation can be requested even for a dispute with no dispute-resolution clause at all.
• There's no court fee for the pre-filing mediation stage itself, making it one of the cheapest formal dispute routes available before a lawsuit is even filed.
• A court-recorded settlement is enforceable like a judgment — a real advantage over an informal side agreement that has no execution mechanism behind it if one party stops paying.

None of this replaces the Damrongtham Center's free administrative complaint channel for a stuck Land Office matter, or the Consumer Case Procedure Act's specific buyer-developer track — mediation is a distinct, often-faster off-ramp for the ordinary civil disputes (money, construction quality, access, inherited-property division) that make up most of the friction around owning property on Phangan, while leaving genuine ownership fights to the courts.