A 30-year leasehold is the practical structure foreigners use to access land in Thailand, where freehold is closed to them. The legal mechanism — registration of a Section 540 lease at the Land Office — is well-defined and stable. What was always less stable was the marketing layer built on top of it: the “30+30+30” structures sold as “90-year secure tenure” or “99-year leasehold.” That marketing layer collapsed in March 2025 when the Supreme Court ruled the pre-agreed renewal mechanism unenforceable.
This article covers what a 30-year lease actually does, how registration works, what changed about renewals in 2025, and what should be in the lease contract that wasn’t there before.
What a 30-year registered lease gives you
Section 540 of the Civil and Commercial Code defines a lease as a contract where the lessor agrees to let the lessee enjoy or use property for a definite period in return for rent. Section 540 caps the term at 30 years. Section 538 requires leases over three years to be registered against the title at the Land Office — without registration, the lease is enforceable only for the first three years against the lessor and not at all against a third-party buyer.
A properly registered 30-year lease gives the lessee:
- Exclusive right to use and occupy the property for the full 30-year term
- Sub-lease rights if granted by the contract (default position is no sub-leasing without lessor consent)
- Right to assign the lease (transfer to another party), subject to contract terms
- Inheritability — the lease passes to the lessee’s heirs for the remainder of the term
- Enforceability against successors to the lessor — if the lessor sells the land, the new owner takes subject to the registered lease
The lease is registered as an encumbrance on the back of the title deed. Anyone searching the title sees it. The lessor remains the freehold owner but cannot evict the lessee or sell free of the lease for 30 years.
What it does not give you
- Ownership — the lessor retains title; you have a contractual right to use, not a property right in the land itself
- Right to modify structures without consent — depends on contract; default is no structural modification
- Renewal as a matter of right — see below
- Mortgageability — Thai banks rarely lend against a leasehold interest; international banks effectively never
- Use as collateral abroad — most foreign lenders won’t recognize a Thai leasehold as security
For ownership of the building itself (separate from the underlying land), the standard pattern in Phuket villa transactions is to stack a superficies on top of the lease — that gives separately-owned, transferable, inheritable rights to the structure.
How lease registration works at the Land Office
Step-by-step, the Land Office process for registering a 30-year lease:
1. Sign the lease contract. Bilingual (English and Thai). Thai law and Thai courts apply to Thai land/lease disputes regardless of the language clause, and the Land Office files the Thai text, so the key drafting goal is bilingual consistency — same meaning in both languages, ideally vetted by the same lawyer. A “language governs” clause can help resolve ambiguity but does not displace Thai law or Thai-text registration. Standard clauses below.
2. Both parties (or proxies via notarised power of attorney) attend the local Land Office. Required documents: title deed (lessor brings), passports, marriage certificates if applicable, the lease contract in original, and a sketch of the leased area (if leasing part of a larger plot).
3. Pay registration fee (1% of total rent) and stamp duty (0.1%). Customarily the lessee pays. For a leasehold condo unit, the same fees apply to the rent figure on the lease, which is usually equal to the property’s purchase-equivalent price.
4. The Land Office officer enters the lease on the back of the title deed. Both parties sign. The lessor keeps the title deed (with the lease entry now recorded); the lessee gets a copy of the lease with the Land Office stamp.
5. Lease begins on the registration date (or the date specified in the contract, whichever is later).
Plan two to four hours at the Land Office. For developers selling new leasehold units, the process is batched — many lessees register on the same day.
What the 2025 Supreme Court ruling actually changed
For about 25 years, the standard Phuket villa lease structure was a 30-year lease with two pre-agreed renewal clauses written into the contract, marketed as “30+30+30 = 90 years secure tenure” or “99-year effective leasehold.” The structure was always legally fragile — Section 540’s 30-year cap is statutory and cannot be overridden by contract.
The legal theory behind “30+30+30” was that the cap applied per registered lease, not per contract, so multiple sequentially-registered leases could be agreed in advance. The Supreme Court rejected this theory on 18 March 2025 in Decision No. 4655/2566.
The court held:
- A 30-year registered lease is valid for its term.
- A clause obligating the lessor to enter into a new lease at the end of 30 years is not enforceable. The renewal must be a genuinely new agreement, freely negotiated, with no pre-commitment.
- Existing 30-year leases are not invalidated. The renewal clauses inside them are.
Three practical implications:
1. The 30-year term is what you have. Buy on the assumption you have 30 years of secure tenure, not 60 or 90.
2. The renewal is the lessor’s decision at year 30. The current lessor’s heirs, or a new owner who buys the freehold subject to your lease, can refuse to renew with no liability to you. They might renew, but you cannot rely on it as a contractual right.
3. Marketing promising “99 years” should be disregarded. Sales materials, developer brochures, or agent assurances of “we have a 90-year structure” or “99-year leasehold equivalent” are not legally enforceable. The marketing layer doesn’t survive contact with the Supreme Court ruling.
What to negotiate into the lease contract — the 2026 version
A leasehold contract drafted before March 2025 typically had a renewal clause. A contract drafted after should focus on what is actually enforceable. Items to push for:
1. Pre-agreed renewal price formula, even if not binding. While the renewal cannot be made automatic, a contract clause stating the renewal price formula (e.g., market rate as determined by two independent appraisers) doesn’t bind the lessor to renew but does set expectations and create dispute leverage if the lessor tries to extract a windfall at year 30.
2. Right of first refusal on the freehold. If the lessor decides to sell the underlying freehold during the lease term, the lessee has the right to match any third-party offer. This is enforceable and gives the lessee a path to convert leasehold to freehold if Section 96 bis ever becomes practical for them, or to find a Thai partner to buy at year 25 and stack a new structure.
3. Heritable and assignable without consent. The default position is that assignment requires lessor consent; the contract can override that. For investment property especially, full assignability is essential to maintain resale value.
4. Sub-lease rights. Explicit permission to sub-lease (short-term or long-term) without further consent. For a property used for rental income, this is essential.
5. Right to construct, modify, demolish, and reconstruct. Without these rights, you cannot meaningfully renovate the property. Push for express grant rather than relying on default rules.
6. Lessor’s obligation to register on the agreed date. Lease registration requires the lessor at the Land Office; without an enforceable obligation, the lessor can delay indefinitely. Include a penalty per day of delay.
7. Indemnity for lessor’s title defects. If the lessor’s title is later challenged or fails, the lessee should be indemnified for losses including any improvements made to the property.
8. Force majeure scope. Define what counts as force majeure and what doesn’t — particularly important post-COVID and given climate risks.
9. Stack with a superficies on any building. A separate superficies registration gives the lessee freehold ownership of the building itself, transferable and inheritable. The lease covers the land; the superficies covers the structure. See Usufruct, superficies, habitation — alternative real rights for foreigners in Thailand.
10. Dispute resolution venue. Thai courts (mandatory for land disputes) but consider arbitration for contract-interpretation matters. Specify Thai law as governing.
When a 30-year lease is genuinely fine
The 30-year horizon sounds short until you compare it to actual ownership intent. A foreign buyer who acquires a leasehold villa in Phuket at age 50 in 2026 has clear, secure, exclusive tenure until 2056. By 2056 the buyer is 80; the property is 30 years older; the area has likely changed; the family situation has changed. For most foreign buyers, the practical hold horizon is 10–20 years, well within the 30-year lease.
The “I want freehold so my grandchildren inherit it” argument is real for some buyers, but Thailand systematically denies foreigners that option. Buying leasehold and accepting the 30-year ceiling is honest. Buying leasehold while believing the “99-year” marketing is wishful.
Resale of a leasehold
A leasehold can be sold (assigned) during its term, but with two practical issues:
1. Diminishing-term discount. A 30-year lease with 25 years left is worth less than a fresh 30-year lease, even if the underlying property hasn’t changed. The discount grows over time. Plan the sale before the last 10–15 years if maximum value is the goal.
2. Smaller buyer pool. Foreign buyers split between freehold-preferring (the majority) and leasehold-accepting (a smaller subset). The freehold side of the market doesn’t apply to your asset. Plan for longer time-on-market on resale.
For a buyer who plans to use the property until they no longer want to (typical 10–20 year hold), the resale discount is real but acceptable. For a buyer who plans to flip in five years, the discount erodes the gain significantly.
What about commercial leases — the 50-year option
The Hire of Immovable Property for Commerce and Industry Act 1999 permits leases up to 50 years for genuine commercial or industrial activity, with the option of one renewal up to 50 more years. This is not available for residential use — the act explicitly excludes residential leases.
In practice, the 50-year option is used by foreign-controlled commercial property developers (hotels, factories, shopping centers) where the land is leased rather than company-owned. It is not a workaround for foreign buyers wanting longer residential tenure.
What this means for buyers in 2026
Three planning rules:
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Buy 30 years of secure tenure. Don’t underwrite 60, 90, or 99 years. The 2025 Supreme Court ruling means those terms cannot be relied on, regardless of what the contract says.
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Stack leasehold land with superficies on the building. This is the standard 2026 pattern. The lease covers the land; the superficies covers the structure with full ownership rights. Both registered separately at the Land Office.
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Push for the contractual rights that survive the renewal issue. Right of first refusal on the freehold, assignment without consent, sub-lease rights, renewal price formula, construction rights — all enforceable and all valuable.
Related: Freehold vs leasehold property in Thailand — what's the difference and which to choose compares the two structures head-to-head. Usufruct, superficies, habitation — alternative real rights for foreigners in Thailand explains the other real rights. Foreign property ownership in Thailand — what you can and cannot own sets the national framework.