Land Code Section 95: what happens to land a Thai national held before losing Thai nationality

Does becoming a foreign national retroactively affect land someone already legally owned as a Thai citizen? Yes, in principle: Land Code Section 95 provides that a person who acquired land while a Thai national, and later changes nationality, keeps the right to hold only as much land as an alien in that position could lawfully hold — the rest 'shall be disposed of and the provisions of Section 94 shall apply mutatis mutandis.'

What Section 95 says, and how the disposal works

• The trigger is a change of nationality after lawfully acquiring land as a Thai national — not a foreign buyer acquiring land unlawfully in the first place (that's Section 96, covered in the nominee-crackdown enforcement guides).
• The cap is whatever amount an alien in the same position is permitted to hold — under Section 87's own limits (1 rai for residence, per family) and, crucially, only if a treaty currently allows an alien to hold land at all. No such treaty has existed since the last one was terminated in 1970, so for most people the amount 'such alien may have' under Sections 86-87 alone is effectively zero.
• The mechanism borrows Section 94: the Land Department's Director-General orders the excess disposed of within a period of not less than 180 days and not more than one year, with a Director-General auction if the owner doesn't sell it themselves in that window.

The separate, narrow exceptions that could still apply

Section 95 only measures against what an alien could hold under the Land Code's own Sections 86-87 — it doesn't touch the handful of separate statutory routes that let a foreigner hold land through other laws, such as a BOI-promoted investment or the THB 40 million investment route. Someone who changes nationality and separately qualifies under one of those distinct mechanisms would be assessed under that statute, not measured as zero — but that qualification has to exist independently; Section 95 itself creates no such right.

Who this realistically touches on Koh Phangan

The most common real-world shape of this on Phangan isn't a dramatic citizenship renunciation — it's the long-term pattern of a Thai spouse holding land in their own name for a foreign partner's benefit (see the usufruct/superficies structure), where that spouse later naturalizes in another country. Whether — and when — Thai nationality is actually lost in that process is governed by the separate Nationality Act B.E. 2508, not by this Land Code section, and outcomes vary by exact circumstances (dual-nationality treaties, voluntary renunciation, marriage-based rules). A family relying on a Thai national's landholding as a long-term arrangement should get bespoke advice on both statutes together, rather than assume a change of passport is legally invisible to the Land Department.

None of this affects land you hold today through a compliant lease-and-superficies structure — Section 95 is about a person who once held title as a Thai national, not about a foreigner's registered rights under the standard ownership structure. But it's a genuine, if narrow, planning question for any household where the landowner's own nationality could change.