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Thailand's Condominium Act limits the total proportion of any building that foreigners can own freehold. Understanding how this quota works before you buy is essential.
Under Section 19 of the Thai Condominium Act, foreign nationals (individuals and foreign-majority companies) can own no more than 49% of the total sellable area of any single condominium building. The remaining 51% must be held by Thai nationals or Thai-majority entities.
This is a hard legal cap, not a developer policy. It cannot be waived by agreement.
The quota is calculated by area (square metres), not by number of units. A building with 100 units totalling 10,000 sqm has a foreign quota of 4,900 sqm.
A large developer penthouse of 200 sqm counts more toward the quota than a standard 50 sqm studio. This means quota availability varies by building layout and sales history, not just unit count.
Ask the juristic person office — Every registered condo has a juristic person (the building management entity). They maintain a current record of foreign vs Thai ownership percentages.
Ask the developer — For new developments, the developer tracks allocation.
Check at the Land Office — The provincial Land Office maintains chanote transfer records. For buildings where the quota is nearly full, this is the definitive source.
Your lawyer can obtain an official quota certificate before you proceed.
If a building's foreign quota is exhausted at the time of your purchase:
Some buildings in popular areas—particularly in Bangkok's Sukhumvit, Phuket's Bang Tao, and Pattaya's Jomtien—have been at or near 100% foreign quota for years. Do not assume availability without checking.
New launches: Developers typically pre-allocate the 49% foreign tranche at launch. In high-demand projects, the foreign tranche sells out quickly—sometimes within days.
Resales: If you are buying from an existing foreign owner, the unit remains in the foreign tranche. The quota does not reset on resale between foreigners.
Thai to foreign: A unit owned by a Thai national can be transferred to foreign ownership, consuming foreign quota. A transfer in the opposite direction (foreign to Thai) releases quota.
There has been periodic political discussion in Thailand about relaxing the foreign quota for certain development zones or types of property. As of 2026, the 49% cap remains unchanged. Any relaxation would require an amendment to the Condominium Act.
Always verify the foreign quota before making an offer on any Thai condo. A building at 100% foreign ownership means you either pay for a leasehold—or walk away. Check early; do not discover this at the contract stage.