Leasehold is the most common route foreigners use to access a house or villa with land in Thailand, but a significant 2025 court ruling genuinely changed how secure the long-term promises behind many of these arrangements actually are.

What a leasehold actually is

A Thai leasehold is a fixed-term legal right to use land or a building for a defined period, governed by Sections 537 to 571 of the Civil and Commercial Code. The maximum statutory term is a strict 30 years under Section 540, there’s no way to legally register a single lease beyond this. It’s worth being genuinely clear about what this means: a leasehold is not ownership. You become a lessee holding a contractual right, not the legal owner of the underlying land, which remains registered to the Thai landowner throughout.

Why registration matters

Leases exceeding 3 years must be registered at the local Land Department to be enforceable for their full stated term, at a cost of roughly 1.1 percent of the contract value (1 percent registration fee plus 0.1 percent stamp duty). This is a genuinely important step, not a formality: an unregistered lease, regardless of what the private contract states, is only enforceable for 3 years under Thai law.

The “30+30+30” structure, and why it changed

For years, developers and lawyers marketed a “30+30+30” structure to foreign buyers, an initial registered 30-year lease combined with a private contractual promise of two further 30-year renewals, effectively presenting 90 years of security. A landmark Supreme Court ruling on 18 March 2025 (Case No. 4655/2566) definitively addressed this: the Court ruled that pre-agreed automatic renewal clauses attempting to extend a lease beyond the statutory 30-year maximum are legally void. The initial 30-year term remains genuinely valid and secure if properly registered, but the promised future renewals do not carry the legal weight buyers were long led to believe.

Why even prepaid renewals aren’t protected

This is the detail worth understanding clearly: even where a buyer has already paid in advance for future renewal periods, as happened in the case that reached the Supreme Court, the renewal promise is treated as a personal contractual obligation between the original contracting parties, not a property right attached to the land itself. This means it doesn’t automatically transfer if the property is sold to a new owner, and heirs inheriting the land aren’t legally bound to honour a renewal promise made by someone who has since died. True renewal negotiations can only genuinely happen once the initial term actually expires, and the landowner at that time is under no legal obligation to agree to one.

A partial protection worth building in

While a renewal can’t be guaranteed in advance, including a “right of first refusal” clause in your original lease agreement creates a genuine contractual obligation giving you priority in renewal negotiations when the term ends. This doesn’t guarantee a new lease, but a Thai court can award damages if this specific right is breached, offering some meaningful recourse that a bare renewal promise doesn’t.

Owning the building separately from the land

If you’re building a house on leased land, a separate legal right called superficies allows you to own the physical structure independently of the underlying land lease. This offers somewhat stronger protection for your actual investment in the building itself, worth discussing specifically with a property lawyer when structuring a villa or house purchase on leased land, since it’s a genuinely distinct legal mechanism from the land lease.

Where this leaves leasehold as an investment strategy

The Supreme Court ruling genuinely narrowed what long-term leasehold can reliably offer. For land and houses specifically, where freehold ownership simply isn’t available to foreigners under any circumstances, leasehold remains the practical route, but it should now be approached as a genuinely time-bounded arrangement, roughly 30 years of secured use, rather than as a functional substitute for permanent ownership. A proposal to introduce a formal 99-year leasehold option has been discussed but remains unenacted as of this writing.

Freehold condos remain the stronger alternative where they fit

If a condominium unit genuinely meets your needs rather than a standalone house, freehold ownership, available to foreigners for up to 49% of a building’s total floor area, remains the only form of genuinely full, permanent title accessible to foreign buyers in Thailand. Worth weighing seriously against a leasehold house or villa if your priorities allow for either option.

Final thoughts

Leasehold remains a legitimate, common way for foreigners to access land and houses in Thailand, but the 2025 Supreme Court ruling means it should be entered with clear eyes: the 30-year initial term is genuinely secure once properly registered, but promises of automatic renewal beyond that carry considerably less legal weight than the marketing around them has long suggested. Proper legal structuring, right-of-first-refusal clauses, superficies rights for buildings, and realistic expectations about tenure, matters more now than ever.

For guidance on structuring a leasehold purchase, get in touch, or browse JLIT’s directory of property lawyers.