Thai title deeds, explained: from Chanote to the condo blue book.

The title-strength ladder

Thai land documents form a hierarchy. The higher the rung, the stronger and more provable your ownership, and the easier the land is to sell, mortgage and develop:

Chanote — the gold standard

A Chanote is the only title with boundaries fixed by an accurate cadastral survey, marked on the ground with numbered concrete posts and recorded at the Land Department. That precision is why it's the cleanest title to buy, finance and resell: there's little room to argue about where your land ends. The original deed lives at the Land Office; you hold a certified copy. Crucially, the back of the deed is the ownership history — every sale, mortgage, registered lease, usufruct and servitude is recorded there. Reading the back is non-negotiable due diligence.

Nor Sor 3 Gor, Nor Sor 3 — usable, with care

A Nor Sor 3 Gor is a confirmed right of use with boundaries tied to aerial photography. It can be sold and mortgaged today and is generally upgradeable to a full Chanote — fine for many transactions if your lawyer checks it. A plain Nor Sor 3 is older and weaker: there is no precise survey, so neighbouring claims can overlap, and any transfer must be publicly posted for 30 days before it completes. You can still buy on a Nor Sor 3, but price in the survey risk and the slower, more uncertain process — or insist the seller upgrade it first.

Sor Kor 1 and Por Bor Tor 5 — the documents that aren't titles

This is where most foreign-buyer disasters start. Neither of these is ownership:

• Sor Kor 1 (ส.ค.1) — a notification of possession filed decades ago; it cannot be freely transferred and may never qualify for a title
• Por Bor Tor 5 / 6 (ภ.บ.ท.5) — proof you paid land-use tax, nothing more; frequently attached to protected, forest or state land
• land marketed cheaply on these documents may be impossible to register, build on, or resell legally

If a seller can't produce a Chanote or at least a Nor Sor 3 Gor, treat it as a stop sign. See also our guide to rental scams and scams to avoid.

The condo exception — the Or Chor 2 blue book

Condominiums sit outside the land-title ladder entirely. Each unit has its own Or Chor 2 (อ.ช.2) title deed — the blue book — recording the unit's exact floor area, its proportional share of the building's common property, and the registered owner. Because the land beneath the building is held in common by all owners, a foreigner can own a unit freehold, in their own name, forever — the single form of Thai real estate that allows it — as long as the building is within its 49% foreign-ownership quota. Confirm the owner's name on the Or Chor 2 before paying, and read our foreign condo ownership guide for the quota mechanics.

How to verify a deed — and what to check if you're renting

Verification happens at the Land Department office with jurisdiction over the property — never from a photocopy. Whether buying or renting, run these checks first:

• confirm the owner's name on the deed matches the seller's or landlord's ID
• read the back of the deed for mortgages, registered leases, usufructs and servitudes
• check the boundaries and legal road access — land with no registered access is a trap
• confirm the deed type (Chanote vs Nor Sor 3 vs non-title) and, for condos, the Or Chor 2 unit register
• renting long-term? A lease of 3 years or more must be registered against the title to be enforceable for its full term (Civil and Commercial Code s.538)

Pressure-test the location first with the Neighborhood Finder, and walk the purchase sequence in our step-by-step buying process.

Frequently asked