Thai land title Chanote check: the due diligence that stops the most expensive mistake

A Thai land title Chanote check has three parts. Read the deed and know which of the seven common land documents it is. Verify it in person at the Land Office, not from a photocopy. Then confirm that whatever stands on the land was legally permitted. Most of the money foreigners lose on Koh Samui is lost by skipping one of those three steps, and the losses are not small: buyers have paid full villa prices for houses that later carried demolition orders.

This is general information from a developer, not legal advice. Appoint your own Thai lawyer for the search. Not one the seller recommends, and not us.

What do Chanote, Nor Sor 3 Gor and Nor Sor 3 actually mean?

Thai land documents are a ladder. Only the top rungs are ownership. The rest are rights of possession of varying strength, and the bottom rungs are not rights at all.

• Chanote (Nor Sor 4 Jor): full freehold title issued by the Department of Lands. The plot has been ground-surveyed, the boundaries are fixed on the national grid and marked by numbered concrete posts, and the deed carries a red Garuda. It can be sold, leased, mortgaged and subdivided without a public notice period.
• Nor Sor 3 Gor: a certified right of possession, green Garuda. The plot was mapped from aerial photographs rather than a ground survey, so there are no concrete posts. It can be sold, leased, mortgaged and subdivided, and it can be upgraded to Chanote by petitioning for a ground survey if no neighbour objects to the boundaries.
• Nor Sor 3: the same possessory right, black Garuda, but the land has never been surveyed and the boundaries are described rather than measured. Any sale requires a 30-day public notice at the Land Office so that neighbours can object.
• Sor Kor 1: a notification of possession filed before 1972. It is not a title and cannot be sold or registered. It passes only by inheritance.
• Por Bor Tor 5: a receipt for local land tax. It confers no rights at all, whatever the person selling it says.
• Sor Por Kor 4-01: an agricultural land reform allotment issued to farmers. It cannot be sold, only inherited, and it cannot lawfully hold a villa.
• Nor Sor 2: a temporary permit to occupy state land. It cannot be transferred by sale.

The practical rule for a villa buyer is simple. Chanote is what you want. Nor Sor 3 Gor is acceptable if your lawyer is content with the boundary evidence and you accept that the boundaries were drawn from the air. Everything below that is not a purchase, it is a bet on a future upgrade that the Land Department may never grant.

Which documents should a foreign buyer never pay villa money for?

Sor Kor 1, Por Bor Tor 5 and Sor Por Kor 4-01. These turn up on Koh Samui more than elsewhere because the island has a long history of hillside land that was farmed, informally occupied or inside forest reserve before it became valuable. The pitch is always the same: the plot is cheap, the sea view is real, and the upgrade to Chanote is described as imminent. In many cases the land overlaps forest reserve or a national park boundary, and an upgrade is legally impossible. Sor Kor 1 is the more dangerous of the three because it looks like a document. It was the basis of a series of illegal building permits on the island, and one law firm that has worked on Samui land since the 2000s recorded more than 100 rai of Sor Kor 1 improperly granted. If a seller can only show one of these, the correct price for the land is whatever you are prepared to lose.

How do you run a Thai land title Chanote check at the Land Office?

The seller's photocopy is where the check starts, not where it ends. A deed has two sides. The front carries the title number, the survey page, the plot's area in rai, ngan and square wah, and the registered owner. The back carries the registration history: every transfer, mortgage, registered lease, usufruct, court seizure and transfer restriction ever recorded against the land. A seller who sends you only the front has sent you half the document.

• Obtain a certified copy of the deed, both sides, from the Land Office that holds the parcel. For Samui that is the island's branch land office under Surat Thani province.
• Confirm the registered owner matches the person or company signing the sale agreement, and that the ID or company registration matches. If the owner is a company, pull the shareholder list from the Department of Business Development on the same day.
• Read every entry on the back page. A mortgage must be discharged before or at transfer. A registered lease to a third party survives your purchase.
• Walk the boundaries with the deed's survey plan. On a Chanote, find the numbered concrete posts at each corner. Missing or moved posts are a reason to commission a Land Office re-survey before you pay a deposit.
• Check road access is registered. A plot reached only over a neighbour's land, with no registered servitude, can be landlocked the day that neighbour sells.
• Ask the Land Office to confirm there is no pending seizure, no litigation flag and no objection lodged against the boundaries.

The Department of Lands runs a public mapping service, LandsMaps, which will show you a parcel's shape and appraised value from the title number. It is a useful first look. The Department itself states that it is not legal evidence, so treat it as a way to spot obvious problems, not as the search.

Why is a clean title not enough on Koh Samui?

Because the title tells you who holds the land. It says nothing about whether the house on it is legal. On Samui that distinction has cost buyers dearly twice in the last two years.

In Maret, the Ariya Residence project of 11 villa buildings was served with a demolition order by Koh Samui Municipality on 18 October 2019 under the Building Control Act 1979, for unauthorised construction. Further orders followed on 9 April 2024. When officials arrived to enforce them on 21 October 2024, the project's lawyer produced a petition filed with the administrative court three days earlier, and enforcement stalled. Foreign guests were staying in the villas at the time. Whoever bought into that project holds a house whose legal existence is being argued in court.

Then in March 2026 the municipality discovered that a clerical officer had been issuing forged Or.1 building permits, reportedly for around ฿100,000 each. At least 10 fake permits were tied to villa developments, on top of more than 100 questionable permits found in inspections during 2024 and 2025. A buyer who was shown a permit with a municipal stamp had no way to tell it was forged. The only defence is to verify the permit number directly with Koh Samui Municipality, in person, before exchange.

Zoning matters too. Under the environmental regulations that apply to Samui, land on slopes between 35 and 50 degrees may only carry a single house of up to 6 metres in height and 80 square metres of footprint, and land above 140 metres elevation is limited to 90 square metres of floor area. A hillside villa of 400 square metres on a plot like that has a title problem waiting to become a demolition problem.

What does the nominee crackdown add to the check?

Section 86 of the Land Code limits foreign land ownership to cases permitted by treaty or ministerial permission, and in practice there are none. Land acquired unlawfully must be disposed of within a period the Director-General sets at between 180 days and one year, after which the Department can sell it. A foreigner who breaks the rule, and a Thai who holds land as their nominee, each face a fine of up to ฿20,000, up to two years in prison, or both, under sections 111 and 113.

Those sections sat quietly for decades. They no longer do. Between October 2025 and June 2026 the government ran 35 coordinated operations across 11 provinces, Surat Thani among them, and the Department of Lands examined 17,556 property holdings. On Samui, one local law firm alone was found to have set up 167 companies for foreign investors. For a buyer this changes the title check in one specific way: read the chain of ownership on the back of the deed. If the land has passed between Thai companies with foreign directors, and especially if it has changed hands by share transfer rather than by registered transfer, you may be buying a structure the state is actively looking for.

The honest limitation

A Nor Sor 3 Gor is not a scandal. Much of Samui's inland and hillside land is still held on it, and plenty of well-built, lawfully permitted villas stand on it. The risk is specific: boundaries drawn from aerial photographs can disagree with the ground by metres, and a neighbour's objection can hold up an upgrade for years. If you buy on Nor Sor 3 Gor, price that in and get a Land Office survey before completion, not after.

We should also be plain about our own position. We build and sell villas, so we have an interest in you buying one. The right response to that is not to trust our description of a title but to ask for the deed, both sides, and to have your own lawyer pull a fresh Land Office search dated the month you sign.

Can a foreigner hold a Chanote in their own name?

No. Section 86 of the Land Code prevents a foreign national from owning land outright. What a foreigner can register on a Chanote is a lease of up to 30 years, a usufruct, or a right of superficies over the building. The title check is what tells you whether the land those rights sit on is sound.

How long does a Land Office title search take on Koh Samui?

A certified copy of the deed and a check of encumbrances can usually be done in a day if the file is in order. A re-survey of boundaries depends on the office's survey queue and can take weeks. Do not let a seller's deadline shorten either.

Is a Nor Sor 3 Gor safe to buy?

It is a registered, transferable right and many villas stand on it. It is less certain than a Chanote because the boundaries come from aerial survey rather than ground survey. Have the boundaries walked and, if possible, petition for the upgrade to Chanote as a condition of the sale.

What if the title is fine but the building permit is not?

Then you are buying an illegal structure on legal land. The Building Control Act allows the municipality to order demolition, as it has done in Maret. Verify the permit number with Koh Samui Municipality in person, and check that the built house matches the permitted drawings.

Can a Sor Kor 1 or Por Bor Tor 5 plot be upgraded to Chanote?

In theory some possessory documents can be upgraded if the land is outside forest reserve and the claim predates the relevant cut-off. In practice, on Samui, the cheap sea-view plots sold on these documents very often overlap protected land and the upgrade never comes. Assume it will not.