Sor Por Kor 4-01: What You Can and Cannot Do With It

If you hold a Sor Por Kor 4-01, the first thing to know is that the document is not proof of ownership, and waiting will not turn it into one. The second is that this does not make your land worthless. It means its value is in farming it and in passing it to your children — not in selling it.

This page is written for owners, not for buyers. We wrote it because landowners in Chiang Dao send us Sor Por Kor documents for a free check and get an answer they did not want to hear. That answer deserves to be clear and sourced, rather than something you find out after you have signed something.

What Sor Por Kor 4-01 actually is

Sor Por Kor 4-01 is a document allocated by the Agricultural Land Reform Office (ALRO) to Thai farmers who are landless or nearly landless, under the Land Reform for Agriculture Act B.E. 2518, for agricultural use only.

The key words are right to use, not ownership. The state still holds the underlying title. What you hold is the right to farm that parcel. That is a different thing from a Chanote (น.ส.4 จ.) or a Nor Sor 3 Gor, which the Land Office will register a sale, a mortgage or a lease against.

Three prohibitions come with the document, and all three are stated plainly in the sources: no sale on the open market, no lease to foreigners, and no commercial or otherwise non-agricultural use.

Why it cannot be sold

This is not a custom or an internal policy. It is in the Act itself.

As our sources set it out, the Land Reform for Agriculture Act B.E. 2518, Section 39, makes any transfer of Sor Por Kor land void unless it is one of two things: inheritance by a direct heir, or a return of the land to the Agricultural Land Reform Office. Void does not mean merely unenforceable. It means the contract never had legal effect at all.

The consequence is heavier than most people expect. A Supreme Court decision, which our source reports as B.E. 2542, held that a buyer who pays for Sor Por Kor land has no legal route to recover the money, because the contract broke the law from the beginning. The buyer loses the money, does not get the land, and the court does not step in.

One caveat, said plainly: the section number and the year of that judgment come from published secondary sources, not from the Royal Gazette text or the judgment itself, and the source gives no case number. If this matters to a decision you are about to make, ask ALRO or a lawyer. Do not treat this page as a ruling.

What about a private contract?

Several workarounds get offered: a private sale agreement, a long lease, a usufruct registered for the buyer. They are offered, and they are used, especially on foreign buyers who do not know the document's limits.

What our sources agree on is that these have no registrable force. The Land Office will not register them. And without registration, what the buyer holds is a piece of paper between two people that Section 39 has already made void.

As the owner, your exposure is not only financial. Taking money for land you cannot transfer puts you into a dispute with no good ending, and puts your own right to farm the land in question.

Inheritance

The clearest route the law leaves open is succession to a direct heir. That is why so much Sor Por Kor land has stayed in one family across generations.

What we cannot tell you — and we would rather say so than guess — is the detail. Our sources do not say which relatives count as direct heirs. They do not say whether an heir must continue farming. They do not say whether an heir must independently qualify as landless or nearly landless. They give no deadline for registering a succession, and they do not say which office handles it.

We do not invent that kind of thing. If you are planning your estate, contact your local ALRO office and ask all five questions.

One more honest note: two of our sources describe the non-inheritance transfer route differently. One calls it "an ALRO-supervised transfer between qualifying farmers"; the other calls it "a return of the land to the Land Reform Office". They may well be the same process described from two sides, but neither source confirms that, so we give you both and point you at the office.

The 2026 regularisation, and the rental route

There is one programme our sources do describe, and it matters to anyone holding Sor Por Kor land informally.

A government regularisation programme lets informal holders register and convert to a formal rental at ฿100 to ฿600 per rai per year, with a registration deadline of 9 December 2025 and a cap of 50 rai per person.

Read that carefully. It converts informal occupation into a tenancy. It is not an upgrade to a Chanote, it does not grant ownership, and it does not make the land sellable.

And here is the second thing we could not confirm. The much-discussed programme to convert Sor Por Kor 4-01 into an agricultural title deed does not appear anywhere in the sources we hold. We will not say it exists and we will not say it does not. If someone tells you your land is about to become a title deed, go and ask ALRO yourself — and do not pay anybody who offers to push the application through for you.

Likewise, the 9 December 2025 deadline in our source falls before the date we gathered this research, and the source does not say whether it was met or extended. Treat that date as something to re-check before relying on it.

Sor Por Kor in Chiang Dao

Across our survey of land adverts in Chiang Dao district, no portal listed Sor Por Kor land for sale. The reason is straightforward: advertising it would document a transaction the law forbids.

So this market is invisible to the kind of survey we run, and it lives in private channels instead — a village contact, LINE, a broker. The conclusion for a buyer follows: an offer of "several rai for around a million baht" arriving through a private channel should be assumed to be Sor Por Kor or otherwise undocumented until it is proved to be a Chanote.

One thing the zoning does confirm: land-reform areas are recognised inside the Chiang Mai provincial plan that governs Chiang Dao. The articles for the green zone, the rural and agricultural conservation zone and the forest conservation zone all carry the same clause — inside ALRO land-reform areas within that colour, use is restricted to agriculture under the Agricultural Land Reform Act, plus utilities and public benefit.

How many rai of Sor Por Kor land Chiang Dao holds, and which tambon has most of it, we do not know, and we will not guess.

What to do instead of listing it

Four things that actually work.

One: keep farming it, and settle the succession properly. Inheritance by a direct heir is the clearest route the law leaves open. Ask ALRO what they need, and get it ready now rather than later.

Two: if you hold informally, go and register. A proper tenancy at a few hundred baht per rai per year is a stronger position than occupying land with no document behind you at all.

Three: do not sign a sale agreement and do not take a deposit. Whether it is called a sale, a lease or a usufruct, Section 39 reaches all of them, and the people who get hurt are you and the buyer — not whoever introduced you.

Four: if you also hold a Chanote or a Nor Sor 3 Gor on another plot, that one can be sold normally. Send us a photograph and we will read it and tell you what it is and what it allows. If it turns out to be Sor Por Kor, we will tell you exactly what this page says.