Editorial
90-Year Lease in Thailand: Is It Legal? A 2026 Guide
By THAI.ESTATE Editorial Team11 min read
A '90-year lease' in Thailand is a marketing term, not a single legal instrument. Thai law caps a registered lease at 30 years. Developers and agents package three consecutive 30-year lease periods and present them as one 90-year deal. The first 30-year term is enforceable at the Land Department. The second and third terms are contractual promises between the original parties, and those promises carry real legal risk that most buyers underestimate.
This guide explains what the law actually says, what a signed lease contract can and cannot guarantee, and how to assess whether a leasehold structure fits your situation before you pay a reservation deposit.
Quick answer
- Thai law (the Civil and Commercial Code, Section 540) limits any single land or property lease to 30 years. This cannot be extended by contract alone.
- A 90-year lease is structured as three back-to-back 30-year terms. Only the first term is registerable at the Land Office and is binding on any future land owner.
- Renewal clauses for terms two and three bind the original lessor (the developer or land owner) but do not automatically bind a new owner if the land is sold or transferred.
- As of 2026, there is no legislation in force that allows a single 90-year lease registration in Thailand for residential property.
- Some developers use a superficies or usufruct structure alongside a lease to strengthen the buyer's position. These are separate legal instruments with their own rules and limitations.
- A 90-year leasehold structure is not illegal, but whether the full 90 years is enforceable depends entirely on the contract language and the financial stability of the lessor.
Options and scenarios
Option 1: Standard registered 30-year lease
This is the baseline. You sign a lease, pay a premium or monthly rent, and the lease is registered at the Land Department (also called the Land Office). Registration costs roughly 1.1% of the declared lease value, split between lessor and lessee by negotiation.
Once registered, the lease is a real right (a right in rem under Thai property law). It survives a change of land owner. If the developer sells the land to a third party, your registered 30-year lease remains valid against that new owner.
At the end of 30 years, you have no automatic right to renew. The contract may promise renewal, but the new owner of the land is not bound by that promise unless they explicitly agreed to it in writing.
Option 2: 30 plus 30 plus 30 (the marketed '90-year' structure)
The developer signs a lease for 30 years and includes a clause promising two further 30-year renewals. The contract may say the lessor 'agrees to renew' on the same or similar terms.
The first term is registered. The renewal promise is a personal obligation (a right in personam) of the lessor. It is enforceable against that lessor in a Thai civil court if they refuse to renew. However, if the lessor company dissolves, is sold, or the land changes hands without the buyer of the land explicitly assuming this obligation, enforcing renewals becomes complicated and expensive.
Some contracts attach a memorandum of intent for renewal to the title deed, but this is not a registered renewal. It is a note. Its legal weight is disputed among Thai property lawyers.
Option 3: Lease combined with superficies
A superficies (Thai: สิทธิเหนือพื้นดิน) is a registered real right that gives you ownership of structures on land you do not own. Unlike a lease, a superficies can be granted for up to 30 years or for the lifetime of the holder. It is registered at the Land Office and survives a change of land owner.
Some developers combine a lease with a superficies to give the buyer stronger protection over the building itself. This structure can be more defensible than a pure lease with renewal promises, but it is more expensive to draft and register, and fewer developers offer it.
Option 4: Freehold condominium unit (for comparison)
Foreign nationals can own a condominium unit in freehold (full title, chanote deed in your name) if the building's foreign ownership quota is not exceeded. The quota allows foreigners to own up to 49% of the total sellable floor area in a condominium building registered under the Condominium Act B.E. 2522 (1979, as amended).
Freehold ownership has no time limit. It can be inherited, mortgaged, and resold without the lessor's consent. It is the only route by which a foreign individual can hold outright property rights in Thailand without a Thai spouse or company structure.
For buyers comparing 90-year leasehold to freehold, the core question is: would you accept a structure where your right to remain in the property depends, after year 30, on the continued existence and goodwill of the original developer?
Comparison table
| Parameter | Registered 30-year lease | Marketed 90-year lease | Lease plus superficies | Freehold condo unit |
|---|---|---|---|---|
| Maximum term (Thai law) | 30 years | 30 years registered; 60 years contractual only | 30 years or lifetime (superficies) | Unlimited |
| Registered at Land Office | Yes (first term only) | Yes (first term only) | Yes (both instruments) | Yes (chanote in your name) |
| Survives land sale to new owner | Yes (registered term) | First term yes; renewals uncertain | Yes (both instruments) | Not applicable |
| Renewal enforceable without lessor cooperation | No | No (contractual promise only) | Not needed (right runs with land) | Not applicable |
| Inheritable by heirs | Yes, within remaining term | Yes, within remaining term | Yes, within remaining term | Yes, no time limit |
| Foreign buyer eligible | Yes | Yes | Yes | Yes, subject to 49% quota |
| Resale liquidity | Lower; buyer takes over remaining term | Lower; buyers discount unregistered years | Moderate | Highest |
| Financing from Thai banks | Rare | Very rare | Rare | Possible (some Thai banks lend to foreigners on condos) |
| Typical registration cost (2026) | Approx. 1.1% of lease value | Same for first term | Higher (two registrations) | Approx. 6.3% transfer fee plus taxes |
| Risk if developer dissolves | Low (first term protected) | High (renewals unenforceable) | Low to moderate | Very low |
Risks and mistakes
Treating the renewal promise as a registered right
This is the most common and costly misunderstanding. When you sign a 90-year lease, you receive a registered 30-year right and a contractual promise for 60 more years. These are legally different. The first survives almost anything. The second depends on the lessor's continued existence and willingness to cooperate.
Buying from a developer whose land is mortgaged
If the land under your leasehold unit is mortgaged to a Thai bank, and the developer defaults, the bank may foreclose. A registered lease generally survives foreclosure in Thailand under the Civil and Commercial Code, but complications arise when the registered lease post-dates the mortgage. Always ask the seller's lawyer to confirm the land is free of encumbrances before you sign.
Paying a full 90-year premium for 30 years of legal certainty
Developers sometimes price leasehold units as if the full 90 years were guaranteed. You are paying a premium for a promise. Negotiate the price to reflect the legal reality: only 30 years is fully protected.
Ignoring the renewal mechanism in the contract
Some contracts say the lessor 'shall renew' but include conditions such as 'subject to no material breach' or 'subject to government regulations in force at that time.' These conditions can be used to block renewal. Read the renewal clause word by word with your own independent Thai lawyer.
Assuming the contract automatically transfers to your heirs
A lease is inheritable, but your heirs inherit the remaining registered term only. If they inherit in year 28 of the first 30-year term, they have two years of registered protection. Renewal rights may or may not transfer, depending on the contract language.
Not checking the company structure behind the lease
Many leasehold projects are held through a Thai company that owns the land. If that company is restructured, sold, or wound up, the entity that signed your lease may cease to exist. Ask for the land owner's company registration, shareholders, and any share pledge agreements that could transfer control.
Skipping independent legal advice
The developer's lawyer acts for the developer. You need your own lawyer, independent of the transaction, to review the lease agreement, title deed (chanote or lesser title), Land Office encumbrance certificate, and company documents before you commit any funds.
FAQ
Is a 90-year lease legal in Thailand?
The structure is not illegal, but it is not a single legal instrument. Thai law caps a registered lease at 30 years. A '90-year lease' packages three 30-year terms. Only the first 30 years has full legal protection through Land Office registration. The remaining 60 years rest on a contract between private parties.
Can the Thai government change the 30-year lease limit?
As of 2026, there has been ongoing discussion about extending the maximum lease term for foreign investors, particularly for designated economic zones and industrial areas. No legislation extending the general residential lease limit to 50 or 90 years has passed. If and when such a law is enacted, its scope and transition rules will matter enormously. Do not buy on the assumption that a law change will validate your contract.
What happens to my lease if the developer sells the land?
Your registered 30-year lease is a real right and remains valid against any new land owner. Your renewal rights for years 31 to 90 are a personal right against the original lessor. If the original lessor is no longer the land owner, you must pursue the original lessor for breach of contract if they refuse to facilitate renewal. This is a civil court process that is slow and uncertain.
Is a leasehold unit harder to resell than a freehold unit?
Yes, in most cases. When you sell a leasehold unit, the buyer takes over whatever time is left on the registered lease. A unit with 28 years remaining is more saleable than one with 8 years remaining. Per market estimates in 2026, leasehold units in popular areas typically trade at a 10% to 25% discount to equivalent freehold units, though this varies by location and remaining term.
Can I get a mortgage on a 90-year leasehold property in Thailand?
Thai banks rarely lend to foreign nationals on leasehold property. Some international lenders and offshore mortgage products exist, but terms are restrictive. If financing is part of your plan, a freehold condominium unit is a more practical route.
What is a superficies and how does it help?
A superficies is a registered real right that gives you legal ownership of the buildings on the land for up to 30 years or your lifetime. Unlike a lease renewal promise, a superficies is recorded on the title deed and binds any future land owner. Combined with a lease, it gives you stronger protection over the physical structure. It does not solve the 30-year term limit, but it does mean a new land owner cannot demolish or claim your building.
What questions should I ask the developer's lawyer before reserving?
Ask for: the Land Office title deed (chanote) number and a current encumbrance certificate; confirmation that the land is free of mortgages or liens that pre-date your lease; the company registration and shareholder list of the land-owning entity; the exact wording of the renewal clause and any conditions attached to it; confirmation of who will hold the land in year 31 and year 61; and whether any share pledge over the land-owning company exists.
Can I own a Thai condo freehold instead of leasehold?
Yes, if the building has available foreign quota. Under the Condominium Act, foreigners can own up to 49% of a building's total sellable floor area outright, with a chanote (full title deed) in their name. This is the most legally straightforward ownership route for a foreign buyer in Thailand. When foreign quota is full, developers often offer leasehold as an alternative.
Is the lease registered in my name at the Land Office?
Yes, for the first 30-year term. Your name and the lease terms are noted on the land title deed held by the Land Department. This registration is what gives the lease its status as a real right. Without registration, even a 30-year lease would be enforceable only as a personal contract, not as a right binding on third parties.
What does 'registered at the Land Office' actually mean?
It means a Land Department official records your lease on the government's official property register. The lease details appear on the back of the title deed. This process requires both parties to attend the Land Office (or send legal representatives) and pay a registration fee. An unregistered lease - even one in a notarized document - does not have the same legal strength against third parties.
Planning a property purchase in Thailand? Send us your requirements - the THAI.ESTATE team will reply with specific options and a safety checklist for your case.