Spousal Consent in Thailand: Land Sales Voided by Court

Last updated on septembre 14, 2026

Spousal consent in Thailand is not a formality — it can decide whether you actually own the land you paid for. In Dika 3228/2569, published in September 2026, the Supreme Court confirmed the annulment of four registered land sales made by a husband without his wife’s consent, and went one step further: the buyer, who had held the land for years, was ordered to vacate it entirely. Sales registered in 2006 and 2017 were unwound, and the buyer walked away with nothing but a claim for his money back.

For foreigners buying property, leasing land or married to a Thai spouse, this decision is a sharp reminder that marital property rules under the Civil and Commercial Code sit underneath every land transaction in the Kingdom.

The Case: Four Land Sales Annulled

A husband and wife registered their marriage in 1976. Decades later, the husband sold four plots of land to the same buyer — two plots in 2006 and two more in 2017 — and registered the transfers at the Land Office. His wife never gave her consent. After both spouses died, a child of the couple, acting as estate administrator, sued to annul the registrations, arguing the plots were marital property (sin somros) that the husband had no right to dispose of alone.

The courts agreed that the sales could not stand. On final appeal, the Supreme Court held that once the sale registrations were annulled in full, the buyer had no ownership status left at all: he had to vacate the land and cease any involvement with it. The full decision is available in the Supreme Court decision database (Dika 3228/2569).

Spousal Consent in Thailand: Sections 1476 and 1480

Section 1476 of the Civil and Commercial Code lists the transactions involving marital property that spouses must carry out jointly or with the other spouse’s consent. Selling or mortgaging immovable property — land, houses, condominium units that are sin somros — sits at the top of that list.

Section 1480 supplies the sanction: where one spouse disposes of marital property without the required consent, the other spouse may apply to the court to annul the transaction. The law does place time limits on that right — the action must generally be brought within one year from the day the non-consenting spouse learned of the transaction, and no later than ten years after it was made — so the facts of each case matter. But as Dika 3228/2569 shows, when the annulment claim succeeds, it succeeds completely: the registration is wiped out, not merely adjusted.

The rules on what counts as marital property are explained in our guide to the consequences of marriage in Thailand, and couples who want certainty about what is separate and what is shared can address it in a contrat prénuptial en Thaïlande.

Which Property Needs Consent?

Thai family law divides a married couple’s assets into two baskets, and only one of them requires spousal consent to sell:

The trap for buyers is that the land title deed shows only the registered owner’s name — it does not show the owner’s marital status or whether the plot is sin somros. Land acquired during a marriage is presumed to be marital property unless proven otherwise, even when registered in one spouse’s name alone. Our guide to titres de propriété en Thaïlande explains what the deed does and does not tell you.

What the Buyer Lost: Annulment Means Eviction

The distinctive point of Dika 3228/2569 is the remedy. The Court of Appeal for Specialized Cases had annulled the sales but declined to order the buyer off the land. The Supreme Court reversed that restraint, citing Sections 1476 and 1480 of the Civil and Commercial Code together with the procedural rules in Sections 141, 142 and 246 of the Civil Procedure Code: full annulment strips the buyer of every right in the property, so eviction and the end of any use of the land must follow.

In practical terms, a buyer in this position loses the land, any structures or improvements built on it, and years of use — and is left pursuing the seller (or the seller’s estate) for restitution of the price. Where the seller has died or has no assets, that claim may be worth little.

Due Diligence Checklist for Buyers

• Check the seller’s marital status — ask for the house registration (tabien baan), ID card and, where applicable, the marriage certificate. Do not rely on the title deed alone.
• Ask when and how the seller acquired the land — land bought during a marriage is presumed sin somros even if only one name appears on the deed.
• Require the spouse’s written consent at the Land Office — the consent should be given or confirmed before the land official on the day of transfer.
• Watch for divorced or widowed sellers — property that was sin somros may not have been fully divided, and heirs may hold rights in it.
• Use a lawyer for the title search and transfer — a proper due diligence covers the deed, the seller’s family situation and any registered or unregistered claims, as set out in our Guide immobilier pour étrangers en Thaïlande.

What This Means for Foreign Spouses and Investors

For a foreigner married to a Thai national, spousal consent in Thailand works in both directions. When your Thai spouse buys land, you will usually be asked at the Land Office to declare that the purchase money is your spouse’s separate property — a declaration with real consequences, which we analyse in our article on the confirmation letter when buying land through a Thai spouse. But for assets that are genuinely sin somros — a house built during the marriage, a condo bought with shared income — your consent is required before your spouse can validly sell or mortgage them, and a sale made behind your back can be annulled under Section 1480.

For investors and long-term residents buying from Thai sellers, the lesson is simpler: the cheapest insurance in Thai property law is confirming who must sign. A missing signature in 2006 was still unwinding a transaction in 2026. Questions about how marital property is divided when a marriage ends are covered in our guide to divorce en Thaïlande.

If you are planning a purchase, reviewing an old transfer, or worried that property was sold without your consent, our team can run the title search, review the family situation behind the deed, and act quickly where an annulment claim must be brought or defended. This article was written and reviewed by Sebastien H. Brousseau, LL.B., B.Sc., based in Thailand since 2004 and running ThaiLawOnline since 2006. Contact ThaiLawOnline for a consultation before you sign.

This article is general information about Thai law, not legal advice. Property and family cases turn on their specific facts; consult a qualified professional about your situation before acting.

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