Tor Bor 5, Sor Kor 1, and Other Lower-Tier Thai Land Documents

Once you drop below Nor Sor 3 Gor, you are no longer dealing with anything that the Land Office considers a freely transferable title. Nor Sor 3 is essentially Nor Sor 3 Gor without aerial photography — issued before the photo-mapping programmes of the late 20th century — and is even less precise about boundaries. Nor Sor 2 is a temporary occupancy permit, not a deed at all. Sor Kor 1 is a historical claim form from the 1950s and confers no real ownership. The Tor Bor series (Tor Bor 5, Tor Bor 6) are tax-paying documents issued by the local district office to confirm that someone has been paying land use tax on a particular plot. They are not titles. Por Bor Tor 5 is a similar tax-receipt document. None of these papers can be sold or transferred at the Land Office in the way a Chanote can.

Sor Kor 1 was a one-time claim form issued in the 1950s under a national land-rights programme, in which Thai citizens were asked to declare which land they had been farming or occupying. A Sor Kor 1 record is essentially a self-declaration that may or may not have been verified, and it cannot be sold to a third party. It can only sometimes be upgraded to Nor Sor 3 or Nor Sor 3 Gor by the original holder or their direct heir, and only after Land Office survey and verification. Foreigners are sometimes offered 'Sor Kor 1 land' at bargain prices in provincial areas. Even ignoring the foreign-ownership prohibition, paying for Sor Kor 1 land is essentially paying for an unenforceable claim — there is no legal way to register the transfer at the Land Office.

Tor Bor 5 (and the related Tor Bor 6) are tax-receipt documents proving that a person has paid the local land-use tax on a particular plot for one or more years. They are issued by the local district office (Or Bor Tor or municipality), not the Land Department. Possessing Tor Bor 5 receipts does not give the holder ownership of the land — it merely shows they have paid tax on it. In practice, Tor Bor 5 land is often occupied informally on what was originally state or forest reserve land. The 'owner' may have built on it and paid taxes for decades, but they cannot legally sell the land and the state can in theory reclaim it. Tourist-island Tor Bor 5 'titles' are particularly risky because much of the land in question sits inside national park or forest reserve boundaries.

Por Bor Tor 5 is another tax-related document, conceptually similar to Tor Bor 5 — a receipt for land-use tax paid to the local administrative office. It is sometimes used as informal proof of occupation but has no legal status as a title. In the early 2000s some developers in Phuket, Krabi, and Koh Samui used Por Bor Tor 5 land to build villas and sell long leases to foreigners, leading to a series of demolition orders when the state later confirmed that the land was protected. If you are ever offered land 'on Por Bor Tor 5' you should treat the transaction as a non-starter. Even a Thai national would struggle to defend ownership of Por Bor Tor 5 land against a determined state claim, and a foreigner has no realistic path to making such a transaction enforceable.

Two main reasons. First, the price differential is huge — Chanote land in a Koh Samui beach area might cost ten to fifty times more per rai than nearby Tor Bor 5 or Sor Kor 1 land, so unscrupulous sellers and brokers push the cheaper plots at foreigners who lack the local knowledge to spot the difference. Second, many foreign buyers do not understand the title hierarchy and trust verbal assurances or photocopies that they cannot read in Thai. Classic scams include: offering Tor Bor 5 land 'with promised Chanote upgrade' that never materialises; selling a 30-year lease over Sor Kor 1 land that cannot be registered at the Land Office and therefore is unenforceable; and creating Thai-majority companies to hold lower-tier documents in arrangements that the state has the right to unwind under nominee-shareholder rules.

The simple rule is: only ever buy, lease, or have your Thai partner own land that sits on a Chanote, or in rare and carefully diligenced cases a Nor Sor 3 Gor. Walk away from any deal involving Nor Sor 3, Nor Sor 2, Sor Kor 1, Tor Bor 5, Tor Bor 6, or Por Bor Tor 5. If the price differential is enormous, that is the market telling you something — the lower price reflects the much weaker rights. A reputable Thai property lawyer will refuse to act on a lower-tier title for a foreign client, and a reputable Thai bank will not lend against one. If both the lawyer and the bank are unwilling, you should be too. The handful of cases where lower-tier land does change hands legitimately almost always involve Thai-only buyers, multi-decade upgrade paths, and significant local political risk that foreigners are particularly poorly placed to manage.