This information is for reference only and is not legal advice. Consult a licensed lawyer before any transaction.
Immigration Act
Immigration Act B.E. 2522 (1979)
The information is reviewed and updated monthly against official sources.
In short
The Immigration Act B.E. 2522 (1979) is Thailand's core statute governing how foreigners enter, stay, report their residence, and qualify for permanent residence, and it deliberately keeps the right to live in the country separate from the right to own property.
Section 4: Definition of an alien
The Act treats as an alien any individual who does not hold Thai nationality under the Nationality Act. This single status triggers every entry, visa, stay and reporting obligation in the statute, regardless of how much property the person may own or how long they have lived in Thailand.
Section 12: Foreigners barred from entering
Entry is refused to applicants lacking a valid passport or visa, lacking adequate funds, carrying certain diseases, holding disqualifying criminal records, posing a security threat, or previously deported. Owning a condominium or other Thai assets does not exempt a foreigner from these admissibility grounds.
Section 34: Purposes allowing temporary stay
Temporary entry is allowed only for listed purposes such as tourism, business, investment, study, employment in skilled work, missionary or media work, scientific research, and transit. Retirement and family-based stays operate as administratively created categories within this framework rather than separate property rights.
Section 35: Permitted stay periods
Each purpose carries a maximum stay: roughly thirty days for transit or crew, ninety days for tourism, up to one year for business, study or work, and up to two years for approved investment. Officials may extend periods as needed, which underpins annually renewed retirement and marriage permissions.
Section 36: Revoking permission to stay
The Director-General or the Immigration Commission may cancel a foreigner's temporary stay permission before it expires, with a right to appeal to the Commission, whose ruling is final. A cancelled stay obliges the foreigner to leave, even if they continue to hold real estate in the country.
Section 37(1): No unauthorised work or occupation
A foreigner admitted on a temporary stay may not take up employment or carry on an occupation unless separately authorised under the labour rules. This restriction applies to retirees and spouses alike, so buying property or marrying a Thai citizen never by itself creates a right to work.
Section 37(3): Notifying change of residence and travel
A foreigner must live at the declared address and report any change of residence, and report when staying in another province, within the short deadlines set by the Act. Maintaining an accurate registered address is a continuing duty regardless of whether the home is owned or rented.
Section 37(5): 90-day residence notification
Any foreigner staying beyond ninety days must file a written notification of their current address with immigration, and repeat it every ninety days while in the country. This obligation is independent of visa renewal and continues for long-stay retirees, spouses and property owners alike.
Section 38: Host and landlord reporting of foreigners
House owners, landlords, hotel keepers and managers who accommodate a foreigner must report that person to the local immigration office, generally within twenty-four hours of arrival. This puts a direct compliance duty on Thai landlords and condominium owners who rent to foreign tenants.
Section 40: Annual permanent-residence quota
Permanent residence is granted within yearly immigration quotas, capped at around one hundred persons per nationality each year. The narrow quota explains why most foreigners with Thai property rely on renewable temporary visas rather than permanent resident status, which remains a scarce and selective category.
Section 41: Approval and residence certificate
A foreigner wishing to reside permanently needs Immigration Commission approval within the quota and must hold a residence certificate. Permanent residence is thus a distinct legal status granted by the authorities; it is not acquired automatically by purchasing a home or investing in property.
Section 43: Investor route within permanent residence
Foreigners making a substantial qualifying investment may be considered for permanent residence outside the standard national quota, subject to an overall annual cap. This is a controlled administrative pathway and differs from condominium freehold purchase, which confers ownership but no immigration status by itself.
Section 48: Re-entry endorsement for residents
A permanent resident loses their status on leaving Thailand unless an official endorses a re-entry (departure for return) permit, valid for one year. Residents and long-stay foreigners must therefore manage re-entry permits carefully so that absences abroad do not erase their accumulated immigration standing.
Section 81: Penalty for unlawful stay (overstay)
A foreigner who remains in Thailand without lawful permission faces imprisonment of up to two years, a fine of up to twenty thousand baht, or both. Daily overstay fines and blacklisting are applied administratively on top of this, so lapses are costly even for established property owners.
Buyer-relevant visas: Visas a property buyer actually uses (retirement, LTR, Elite, marriage)
Buying property does NOT by itself grant a visa or residence; status is arranged separately. Foreign owners typically use: the retirement Non-O / O-A visa (age 50+, 800,000 THB deposit or 65,000 THB/month income); the 10-year LTR visa (BOI programme since 2022, e.g. Wealthy Pensioner and Wealthy Global Citizen); Thailand Privilege (Elite) membership; or a marriage visa based on a Thai spouse. Exact figures and conditions change, so verify current requirements; see the visa articles in this section.