CCC Section 1300: why the buyer who registers first — not who paid first — wins a double-sold Koh Phangan plot

If a seller signs a sale agreement with you, takes your deposit, and then registers the transfer to a different buyer at the Land Office first — who owns the land? Under Thailand's Civil and Commercial Code, the second buyer usually does, provided they registered in good faith and paid value for it. Your claim against the seller for breach of contract survives; your claim to the land itself generally does not.

The two sections that decide it

• Section 1299 — no acquisition of immovable property or a real right over it is complete against third parties until it is registered in writing with the competent official; an unregistered claim, however genuine, can't be enforced against someone who wasn't party to it.
• Section 1300 — if a transfer is registered 'to the prejudice' of someone who had an earlier right to register it, that earlier claimant can sue to cancel the registration — except the cancellation can never be granted against a transferee who paid value and acted in good faith.

What 'good faith and for value' actually means

Good faith here means the second buyer genuinely didn't know about your unregistered agreement when they registered theirs — a knowing accomplice to a seller's double-dealing doesn't get the protection, and a court can strip it from someone who paid a token price to help a seller escape an inconvenient first buyer. But proving bad faith after the fact is hard, and the burden falls on the party asking the court to cancel the registration — not on the registered owner to justify their purchase.

Why lawyers push same-day registration, not just a signed contract

This is the statutory reason behind a piece of advice buyers hear constantly and rarely understand: a signed sale and purchase agreement with earnest money down is a real, enforceable contract between you and the seller — but it creates no right against a third party until it's registered. The gap between signing and registration day is exactly the window where a seller could, in theory, sell or lease the same land again and let the second buyer win the race to the Land Office.

Where this actually bites on Koh Phangan

• Multiple reservation deposits on the same plot — a seller (or an unscrupulous agent) collects deposits from more than one interested buyer on hot 'sea-view' or beachfront land before any registration date is fixed. Whoever registers first keeps the land; everyone else is left claiming their deposit back from the seller, not the land from the new owner.
• A long lease granted twice — a lease of more than three years must itself be registered to bind third parties beyond the first three years. A landlord who signs a second lease over land already under an unregistered (or not-yet-registered) long lease and gets it registered first can leave the first tenant with only a contract claim against the landlord.
• A stalling seller during a slow due-diligence period — the longer the gap between a signed agreement and registration, the longer a seller has time to be tempted by, or pressured into, a better offer from someone else.

What actually protects you

• Register as close to signing as the deal allows. The Section 1300 race has no consolation prize for being first to sign — only for being first (and in good faith) to register.
• If registration can't happen immediately, use a caveat. A buyer under an unfulfilled sale contract is one of the specific claimants entitled to request a Section 83 caveat — a 30-day hold on the title that blocks exactly the second-registration scenario Section 1300 is built around, provided you follow up with a lawsuit within the window.
• Treat a large or unusual deposit request with suspicion, especially on desirable land with multiple interested buyers — see the due diligence checklist and the OCPB deposit-ban guide for what a reservation agreement should and shouldn't ask of you.
• Understand what you're actually owed if you lose the race. Losing to a good-faith registered buyer doesn't erase the seller's liability — you can still sue for return of your deposit, damages, and in some cases double the earnest money if your agreement says so — but you can't undo the new owner's title.

Section 1300 isn't a loophole for dishonest sellers — a seller who deliberately sells the same land twice is exposed to fraud and breach-of-contract claims regardless of who ends up with the title. But the rule is a reminder that in Thai property law, a contract creates a promise between two people; only registration creates a right that binds the rest of the world. On a market like Koh Phangan's, where a hot plot can draw more than one serious buyer at once, that gap between signing and registering is exactly where a deal can be lost — not to a better offer, but to a faster one.