Vetting a Phuket Developer in 2026: A 12-Point Due Diligence Checklist

Phuket's property market is valued at approximately THB 470 billion, with over 45,000 residential units launched between 2021 and 2025 alone. In 2026, a single portfolio move - AssetWise and Rhom Bho Property's The Title brand - injected 47.4 billion baht into the island. Sansiri has planned 20 new projects worth 24 billion baht through 2028. Raimon Land launched branded villas priced from $6.9 million each. Every month, new names appear on construction hoardings and in glossy pitch decks.

The problem is that behind those presentations stand very different companies. Some carry backlogs of 21.7 billion baht and file quarterly disclosures on a public exchange. Others were incorporated last quarter, have never delivered a single unit, and are already collecting reservation fees before receiving EIA approval. Knowing how to separate the two is not optional for serious investors - it is the foundation of every sound purchase decision.

Quick Answer

• License and EIA status are the first documents to request. Without EIA approval, a developer cannot legally begin selling condominiums above a certain height or density threshold.
• Backlog and financial statements - listed companies such as AssetWise (ASW), Sansiri (SIRI), and Raimon Land (RML) publish data on the SET (Stock Exchange of Thailand) website. AssetWise's Phuket backlog represents 57% of the group's total portfolio.
• Completed project count is the single most reliable track-record indicator. Sansiri has operated for over 30 years. The Zero is a newcomer but has already won an Asia Property Awards citation and sold more than 70% of its Bang Tao project.
• Construction standards - verify quality certifications, warranty obligations, and construction-risk insurance.
• Buyer reputation - check ThaiVisa forums, Pantip threads, resident Facebook groups, and court records via the COJT system.
• Contract terms - penalty clauses for late delivery, refund procedures, and any currency-linkage provisions (baht vs. dollar).

Scenarios and Options

Scenario 1: Buying from a SET-Listed Developer

Companies traded on the Stock Exchange of Thailand are legally required to publish quarterly financials. That includes AssetWise (ASW), Sansiri (SIRI), Raimon Land (RML), and several others. Go to set.or.th, search the ticker, and download the annual 56-1 One Report. It will contain the debt-to-equity ratio, revenue, project backlog, and any pending litigation.

AssetWise is targeting total revenue of 12.5 billion baht for 2026, with roughly half coming from Phuket assets. The company is backed by a Phuket-specific backlog of 21.7 billion baht as of 31 March 2026 (Nation Thailand), providing confirmed revenue coverage through 2028.

Sansiri has set a transfer target of 39 billion baht for 2026, deliberately shifting emphasis from sales volume to margin quality and balance-sheet health. The launch of 33 new projects worth a combined 51 billion baht reflects an operational scale that is difficult to manufacture or disguise.

Raimon Land, in partnership with Ennismore (Accor group), launched SLS Residences Phuket Kamala - 13 branded villas priced from 223.4 million baht each, with handover scheduled for 2029. A partnership with an internationally recognised hotel operator provides an additional layer of credibility that pure residential developers cannot replicate.

Scenario 2: Buying from an International Developer

Foreign-headquartered developers are entering Phuket in growing numbers. London-based The Zero launched two projects: The Zero Bang Tao (a seven-storey condominium in the Cherngtalay area) and Silhouette by The Zero Phuket (Nai Yang, adjacent to Sirinath National Park). Both hold EIA approval. Both are positioned as eco-developments featuring solar panels, rainwater harvesting, energy-efficient building systems, and EV charging infrastructure.

When reviewing an international developer, the critical check is whether a Thai subsidiary is properly registered. Use dbd.go.th (Department of Business Development) to confirm the company name, incorporation date, registered capital, and directors. A foreign brand without a properly registered Thai legal entity is a significant red flag and a potential indicator of nominee-structure risk, which Thai authorities are actively targeting through AI-assisted screening of company registrations in 2026.

Scenario 3: Buying from an Unlisted Local Developer

This is the highest-risk category. Smaller Thai companies may offer attractive entry prices, but they frequently lack the financial reserves to complete a project if sales slow. The essential checks here are: a DBD financial review covering the last three years, a verified Construction Permit from the local municipality (Tessaban or OrBorTor), and a personal site visit to at least one previously completed project.

Note that foreign buyers account for approximately 60% of new off-plan transactions across Phuket. That concentration means the unlisted local segment is under the greatest pressure when buyer sentiment shifts, making completion risk materially higher than the headline price discount might suggest.

Comparison Table

The 12-Point Developer Checklist

1. Company Registration. Check dbd.go.th using the developer's Thai or English name. Confirm the incorporation date, registered capital, shareholder structure, and filing history.

2. EIA Approval. For condominiums of 80 units or more, or buildings exceeding 23 metres, an Environmental Impact Assessment is mandatory. Request the official approval number.

3. Construction Permit. Issued by the local municipality. Without it, any construction underway is illegal and the project cannot receive an occupancy certificate.

4. Chanote Land Title. Request a copy of the title document (Chanote / Nor Sor 4 Jor) and verify it through the Land Department to confirm there are no encumbrances, liens, or mortgages registered against the plot.

5. Financial Statements. For SET companies, use set.or.th. For private developers, use DBD. Key benchmarks: D/E ratio below 2:1, positive operating cash flow, and confirmed project financing from a bank.

6. Completed Project Portfolio. The minimum acceptable track record is 2-3 delivered projects. Visit them in person and speak with residents.

7. Court Records. Search through the Thai court system. Multiple buyer lawsuits against a developer are a clear stop signal.

8. Contract Terms. The standard penalty for late delivery is 0.01% of the unit value per day. Confirm a clear payment schedule and a full material specification is attached to the contract.

9. Bank Project Financing. Financing from a major Thai bank such as Bangkok Bank, SCB, or Kasikorn Bank indicates the developer has passed an institutional due-diligence process.

10. Property Management Plan. Confirm who will manage the building post-handover. A signed agreement with a professional property management company is a positive sign.

11. Warranty Obligations. The Thai standard is 1-2 years on structural elements and 6-12 months on fit-out and mechanical systems.

12. Professional Recognition. Check for credible awards (Asia Property Awards, PropertyGuru Awards), coverage in Nation Thailand and Bangkok Post, and membership in TREBS (Thailand Real Estate Broker Association).

Main Risks and Mistakes

• Buying before EIA approval. Some developers collect reservation fees before EIA is granted. If approval is refused, cancellation and refunds can take years to resolve.
• Skipping an independent lawyer. Signing a contract without a Thai-qualified lawyer working for you - not the developer - is the single most common and costly mistake foreign buyers make. Independent legal due diligence on Phuket typically costs between 30,000 and 80,000 baht depending on project complexity, and can protect investments worth millions.
• Confusing ownership structures. Freehold condominium title and leasehold villa (typically structured as 30+30+30 years) are fundamentally different products with very different resale liquidity profiles.
• Trusting renders over reality. Photorealistic CGI is not a substitute for a physical site visit and an honest assessment of the developer's previous completed buildings.
• Missing the foreign ownership quota. Under the Condominium Act, a maximum of 49% of a building's total floor area can be registered to foreign nationals on a freehold basis. If that quota is already filled, you will be offered leasehold at an identical price - a materially less favourable arrangement.
• No exit strategy. Think through liquidity before you buy. RML villas at $6.9 million each have a narrow buyer pool. A condominium priced between 5 and 8 million baht is a significantly more liquid asset in the secondary market.

FAQ

Where can I verify a developer's registration in Thailand? Use dbd.go.th (Department of Business Development) to check company registration, registered capital, directors, and recent financial filings - all at no cost. For SET-listed companies, use set.or.th.

Which developers are most active on Phuket right now? As of 2026: AssetWise (portfolio of 47.4 billion baht), Sansiri (20 new projects worth 24 billion baht through 2028), Raimon Land (ultra-luxury branded villas in Kamala), and The Zero (two eco-projects in Bang Tao and Nai Yang).

Is EIA required for every Phuket project? No. EIA is required for residential projects of 80 units or more, buildings above 23 metres, and developments in designated environmental protection zones. Smaller villa estates generally do not require EIA, but a Construction Permit is always mandatory.

How do I assess a developer's financial stability? Focus on three metrics: the debt-to-equity ratio, the size of the confirmed backlog, and the existence of project financing from a recognised bank. AssetWise's Phuket backlog of 21.7 billion baht provides the company with confirmed revenue coverage through 2028.

Should I buy from a new international developer? Possibly, but with additional scrutiny. Confirm a properly registered Thai subsidiary, valid EIA, and all relevant permits. The Zero, for example, has already received Asia Property Awards recognition and sold more than 70% of its Bang Tao project - both positive indicators.

What is the maximum foreign ownership share in a Thai condominium? Under the Condominium Act, foreign nationals may hold a maximum of 49% of a building's total floor area on a freehold basis.

What happens if a developer delays delivery? A standard Thai purchase contract includes a penalty clause of 0.01% of the unit price per day of delay. If the delay exceeds approximately six months, the buyer generally has grounds to terminate the contract through the courts and recover payments made.

Source: Siam Legal Phuket via Financial Content / KUTV Markets - https://markets.financialcontent.com/fourptsmedia.kutv/article/pressadvantage-2026-3-3-siam-legal-phuket-issues-legal-advisory-as-foreign-investment-reshapes-phukets-470-billion-baht-property-market

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