DSI Raid on Samui: Nominee Networks Collapse, New Risks for Foreign Investors in 2026

Five nominee networks on Koh Samui and Koh Phangan were dismantled in a single coordinated operation. A law firm that spent years engineering fictitious land ownership structures is now facing criminal prosecution. For foreign investors in Thai real estate, this is not just news, it is a signal that the rules of the game are shifting fundamentally.

Thailand's Department of Special Investigation (DSI) carried out coordinated raids on Koh Samui and Koh Phangan, uncovering nominee property schemes worth billions of baht. For the first time, the crackdown targeted not only networks of proxy Thai shareholders but also the legal firm that professionally structured these arrangements for foreigners. According to The Nation Thailand, the operation exposed five separate nominee networks operating in parallel across the southern provinces. A related case, covered by The Phuket Express, saw 31 suspects linked to the Villa Andaman and Firefly (Thailand) projects in Phuket and Samui referred to prosecutors, including foreign nationals identified only as Marcus (UK) and Paul (US).

For international investors considering villas and land plots on Thailand's islands, the consequences of this raid will be felt for years to come.

Quick Answer

• 5 nominee networks were dismantled simultaneously on Koh Samui and Koh Phangan in a coordinated DSI operation

• The total value of the exposed schemes is estimated in the billions of baht, making this the largest nominee ownership crackdown in southern Thailand to date

• A law firm that systematically structured illegal ownership arrangements is now facing criminal prosecution

• Thai law bars foreigners from owning land directly; nominee schemes using proxy Thai shareholders formally circumvented this restriction

• Foreigners whose property is held through nominee structures risk total loss of the asset once a scheme is uncovered

• A related case has already sent 31 suspects to prosecutors, and on Samui and Phangan roughly 90% of villa transactions involve foreign buyers, making these islands a top enforcement priority

Key Facts

• Nominee ownership is a structure where a foreigner effectively controls a Thai company holding land, while shares are formally registered to Thai citizens. Under the Foreign Business Act (1999), such arrangements are illegal

• DSI functions as Thailand's equivalent of the FBI. Its involvement, rather than regular police, signals the criminal nature of the investigation

• Land registry data from Surat Thani province shows more than 4,000 companies registered on Koh Samui, a significant portion of which market observers believe were created specifically to bypass foreign ownership restrictions

• Penalties for participating in nominee schemes include fines of up to 1 million baht and prison terms of up to 3 years, applicable to both the foreign investor and the Thai nominee

• If a company is ruled a nominee structure, a court can order a forced sale of the land within 180 days, typically at a price well below market value

• The 2026 raid follows a 2024 DSI operation in Phuket that uncovered more than 10 networks, and a separate case involving Villa Andaman Co., Ltd. now covers 31 suspects (28 previously indicted, 3 more added), according to The Bangkok Times

• The law firm under investigation reportedly served clients from multiple countries and built multi-layered corporate structures, according to The Nation Thailand

FAQ

What is a nominee ownership scheme in Thailand?

It is a structure in which a foreigner sets up a Thai limited company (Thai Co., Ltd.) to purchase land. Formally, 51% of shares belong to Thai citizens, but actual control and financing come from the foreigner. Thai shareholders sign proxy documents without real participation. Legally, this constitutes fraud.

Can a villa bought through a nominee structure be seized?

Yes. If DSI or the Land Department determines that a company is a nominee arrangement, a court can order the property sold within 180 days. The foreigner loses both the land and any structures on it. Compensation depends on the forced sale price, which typically comes to 40 to 60% of market value.

How can foreigners legally own property in Thailand?

There are three proven routes. First, buying a condominium unit within the foreign ownership quota (up to 49% of a project's total area) as full freehold. Second, long-term land leasehold for 30 years with renewal options. Third, securing a BOI visa or Thailand Elite membership combined with specific investment programs.

Why have raids intensified in 2026?

Thailand is preparing a reform of its property ownership framework. The government is discussing expanded foreign land purchase rights, but before opening the market further, authorities are clearing out grey-area schemes. The political signal is clear: rules will tighten and oversight will become more systematic.

Do the raids affect condominiums?

No. Condominiums purchased by foreigners within the legal 49% quota under the Condominium Act remain fully protected. The raids target only fictitious land ownership schemes built through proxy companies.

What should I do if my villa is held through a Thai company?

Conduct an immediate legal audit of the ownership structure. If the Thai shareholders show no real business activity and never contributed genuine funds, the company is highly likely to be classified as a nominee arrangement. Consider converting to leasehold or selling before a potential audit begins.

Which islands and regions are under the most DSI scrutiny?

Based on 2024-2026 data: Koh Samui, Koh Phangan, Phuket, and Krabi. These resort areas have a high concentration of foreign villa and land buyers. Bangkok and Pattaya are less affected, since their markets are dominated by condominiums.

Do buyers risk anything when purchasing property from an owner with a nominee structure?

Yes. If the seller holds the land through a nominee company, the transaction can be challenged. The buyer risks losing both the money and the property. Due diligence on the seller's ownership structure is essential before any resale purchase.

Will the raids affect property prices on Samui?

In the short term, supply of villas for sale may increase as owners of nominee structures try to exit their assets. This could create a window of opportunity for buyers prepared to purchase through legal mechanisms. Longer term, the market should strengthen as transparency improves.

Source: The Nation Thailand

The events on Samui and Phangan are not an isolated action but part of a broader government strategy. Investors considering property on Thailand's islands should rule out nominee schemes entirely. Legal instruments, including freehold condominiums, land leasehold, and BOI-linked investment, offer sufficient flexibility without criminal exposure.

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