Buying Land in a Thai Spouse's Name: Where the Risks Lie and How to Protect Your Investment

Why Land Is Registered in a Thai Spouse's Name

A foreigner has no right to own land in Thailand - this is a fundamental restriction under the Land Code. For this reason, in mixed-nationality marriages, land (and often a house together with the land) is registered in the name of the Thai citizen. The transaction goes through, but the legal structure behind it is more complex than it appears, and this is precisely where the foreign spouse risks ending up with nothing.

The critical moment occurs at the Land Office. In order to register land in the name of a Thai spouse who is married to a foreigner, the official requires either a joint declaration from the couple or confirmation that the funds used for the purchase are the personal funds of the Thai party. By signing such a declaration, the foreign spouse is effectively declaring that the property is being acquired as the personal property of the Thai spouse (Sin Suan Tua), rather than as jointly acquired marital property (Sin Somros).

What This Means in Practice

The consequences of this declaration for the foreign spouse are serious. If the land is registered as the personal property of the Thai spouse:

• the foreign spouse has no proprietary right to it;
• the Thai spouse may sell, mortgage, exchange or gift the plot without the foreign spouse's consent;
• upon divorce, such an asset is formally not subject to division as jointly acquired property.

Management of jointly acquired property under Section 1476 of the Civil and Commercial Code (CCC) requires the consent of both spouses. However, land recorded as the personal property of one spouse falls outside that rule - only the title holder may dispose of it.

The Presumption of Jointly Acquired Property and the Supreme Court Ruling

There is a nuance that works in the foreign spouse's favour. Under Section 1474 of the CCC, property acquired during the marriage is presumed to be jointly acquired unless it is proven to have been purchased with personal funds. This means that the declaration at the Land Office is not an automatic final judgment.

The Supreme Court of Thailand, in Decision No. 1523-2565 (2022), expressly stated that the confirmation letter signed by the spouses at the time of registration is an administrative formality. It does not automatically determine the legal status of the asset under Section 1474, and it does not override the Code's provisions on the matrimonial property regime. If the foreign spouse can prove that the land was purchased with his or her money, a court may take that into account upon divorce - though typically by way of monetary compensation rather than a transfer of title to the land.

It is important to note, however, that even if a court were to award the land to the foreign spouse, that person would still be unable to hold title to it. The law allows one year in which to sell it, since direct ownership of land by a foreigner is prohibited.

Why a Marriage Contract Does Not Help

Many people place their hopes in a prenuptial or marital agreement. However, Section 1469 of the CCC renders void any property agreements made between spouses during the marriage - such agreements are open to challenge. A prenuptial agreement likewise does not override the prohibition on land ownership by foreigners: it governs the division of assets but does not circumvent the Land Code. Post-marriage agreements under Thai law are effectively unenforceable.

The conclusion is clear: contractual promises between spouses cannot provide adequate protection. What is needed are independent real rights registered at the Land Office.

Protective Instruments for the Foreign Spouse

Thai law provides several practical mechanisms. These are registered on the reverse of the Chanote (title deed) at the Land Office.

The most powerful instrument is the usufruct: it can be granted for life, and so long as it is registered, the Thai spouse cannot sell the land unencumbered - any buyer would take the plot subject to the burden, which in practice blocks any such transaction. A usufruct is not automatically extinguished by divorce.

A lease under Section 540 of the CCC is reliable for fixed-term use and remains in force upon a sale of the plot. Superficies and separate registration of the house allow the foreign spouse to own the building even when the land beneath it belongs to another person.

An alternative to this entire structure is the condominium: a foreigner may hold a condominium unit in freehold within the 49% quota of a building's total area under the Condominium Act, provided the purchase funds are remitted from abroad with a FET form (Tor.Tor.3) obtained. This eliminates the 'spousal' risk entirely.

What to Check and What to Watch Out For

• Do not sign the declaration blindly. A statement at the Land Office confirming that the funds are the spouse's 'personal funds' weakens your legal position - understand what you are signing.
• Register the real right immediately. A usufruct or lease (Section 540) is registered on the same day as the transaction against the same Chanote. Delaying means being left without protection.
• Check the Chanote. Verify that the title is clean, free of any existing encumbrances, mortgages or servitudes.
• Document the source of funds. Bank transfer records, FET forms and payment receipts constitute evidence for any potential dispute under Section 1474.
• Register the house separately. The construction and the land can be separated legally - make use of this option.
• Do not rely on a marriage contract for land. Section 1469 makes spousal agreements vulnerable; what is needed are registered rights.
• Consider a condominium. If the goal is freehold ownership without these risks, the 49% quota and Tor.Tor.3 address the issue directly.
• Engage an independent lawyer. Not one recommended by the seller or the agency, but your own.