Superficies, usufruct and lease: three ways to anchor a building on Thai land

A foreigner buying a villa on Koh Phangan cannot own the land — but can own the building on it, and can hold a registered right to be on the land. Three distinct mechanisms in the Thai Civil and Commercial Code each do something different. Getting the combination right at purchase determines whether you can sell the asset later, pass it to your heirs, or lose it the moment you die.

The three rights at a glance

• Superficies (สิทธิเหนือพื้นดิน) — Code Sections 1410–1416. The right to own buildings or structures on someone else's land. If granted for a fixed term: transferable (sellable), inheritable, mortgageable. If granted for a lifetime: lapses at the holder's death.
• Usufruct (สิทธิเก็บกิน) — Sections 1417–1428. The right to possess, use, enjoy, manage and take income from another person's property. Cannot be sold or left to heirs. A lifetime usufruct terminates at the holder's death. Survives a change of landowner once registered.
• Lease — Sections 537–571. A tenancy right to occupy for a fixed term, capped at 30 years for residential property. Registered leases survive a change of landowner. Pre-agreed renewals beyond 30 years are void per the March 2025 Supreme Court ruling (Case No. 4655/2566).

Superficies: owning the building, not the land

Section 1410 of the Civil and Commercial Code creates the right to 'own buildings, structures or plantations upon land belonging to another person.' For a foreign villa buyer this means the building is titled separately from the land it sits on — you own the house, a Thai national owns the ground. The superficies is the legal instrument that makes that separation enforceable against the world, including future landowners.

For a fixed-term superficies — the form used in most commercial transactions — the right is transferable to a buyer, inheritable by heirs and mortgageable. The maximum term is 30 years per instrument, after which it can be renewed. If granted for the lifetime of a party rather than a fixed term, it cannot be sold or inherited and lapses at death, making it unsuitable for most villa purchases where exit and succession matter.

Registration at the Land Office is mandatory. An unregistered superficies creates only a personal obligation between the original parties — it has no legal effect against a third party who acquires the land. Always confirm the superficies is endorsed on the back of the title deed. See How foreigners legally own a villa.

Usufruct: use and income, but not yours to sell

Under Sections 1417–1428, a usufructuary has the right to occupy, manage and earn income from a property — sub-lease it to tenants (up to 3 years at a time), live in it and cover maintenance. What a usufructuary cannot do is assign the right to another person or leave it to heirs. A lifetime usufruct terminates at the holder's death.

A usufruct does survive a change of landowner when properly registered — a meaningful protection. This makes it useful in specific situations: most commonly, where a Thai spouse or relative holds the freehold and the foreign partner needs a registered lifetime right to use and earn income from the property. It is not the right tool for a commercial villa purchase where the buyer intends to sell or bequeath the asset, because the non-transferability constraint is fundamental.

Lease: occupancy for a fixed term

A registered lease of more than three years gives the lessee a real property right that survives a change of landowner — the new owner steps into the original landlord's position. For a villa, the lease is the foreigner's occupancy anchor: the right to be on the land and use it for the registered term.

The March 2025 Supreme Court ruling (Case No. 4655/2566) settled a long-debated question. A lease that pre-commits to multiple consecutive 30-year terms — the 30+30 or 30+30+30 structure widely used before the ruling — is valid only for the initial 30-year term. Renewal periods signed on the same day as the original lease, even when paid for in full, are void. Renewal is only enforceable when the then-current landowner agrees at the time of that renewal. Section 540 of the Civil and Commercial Code has always capped leases at 30 years; the ruling removes the legal ambiguity many contracts were relying on.

The practical consequence: the occupancy security of a lease ends at 30 years unless the landowner at that time agrees to renew. Plan the exit timeline around the primary term and treat any renewal promise as a bonus, not a guarantee. This is an additional reason the superficies is essential alongside the lease — building ownership survives independently of what happens to the lease at renewal.

Why the standard villa structure is lease + superficies

The two rights are complementary. The lease anchors your right to be on the land for 30 years. The fixed-term superficies separately titles the building — which you can sell, mortgage and leave to your heirs regardless of what happens to the lease. Together they give you: occupancy security for the term, separately owned building equity, and the ability to transfer either right.

• A lease alone does not give you building ownership — only the right to occupy the land.
• A superficies alone does not give you the right to access the land beneath the building.
• A usufruct as the sole instrument means the property right can never be sold or left to heirs.
• The standard structure — 30-year registered lease plus fixed-term registered superficies — closes all three gaps.

Both must be registered at the Land Office and endorsed on the back of the title deed to bind future landowners. See A day at the Land Office for what that registration looks like in practice, and How foreigners legally own a villa for the full combined structure.