Editorial
How to Vet a Thai Property Developer: 7 Checks Before You Pay
By THAI.ESTATE Editorial Team14 min read
Vetting a Thai developer before you transfer any money is not optional - it is the single most effective thing you can do to protect your investment. Thailand has no investor-protection escrow system for residential buyers, no government-backed completion guarantee, and no automatic refund mechanism if a developer collapses mid-construction. The developer's own financial health, legal standing, and project documentation are your only real safety net.
The seven checks below are structured as a practical playbook. You can run some of them from your home country in an afternoon. Others require a licensed Thai lawyer on the ground. Both are necessary before you sign anything or pay a reservation fee.
Quick answer
- Company registration check: verify the developer's company at the Department of Business Development (DBD) website (dbd.go.th) - registered capital, directors, and annual financial filings are publicly accessible as of 2026
- Land title class: the project land must carry a chanote (Nor Sor 4 Jor) - Thailand's highest-grade land title with GPS-surveyed boundaries; anything below (Nor Sor 3 Gor, Sor Por Gor) is a measurable legal risk
- EIA and building permit: for projects over 80 units or 10,000 sq m, a published Environmental Impact Assessment (EIA) approval is legally required before construction; a building permit (ใบอนุญาตก่อสร้าง) must exist before ground is broken
- Construction financing: ask directly how the project is funded - bank project finance (where the lender monitors drawdowns) is safer than a model funded entirely by buyers' stage payments
- Completed-project track record: request the names and addresses of at least two completed, handed-over projects; visit or commission a local inspection report
- Litigation search: your lawyer can search court records at the Central Intellectual Property and International Trade Court and the Civil Court for any active or historical lawsuits involving the developer's company
- Payment schedule tied to milestones: the contract must link each instalment to a verifiable construction milestone, not to a calendar date; delay penalties of at least 0.01% per day of the overdue amount are standard and should appear in writing
Options and scenarios
How do I check a Thai developer's company registration?
The Department of Business Development (DBD) operates a free public database. Search the developer's Thai company name or registration number at dbd.go.th. You can see registered capital, current directors, and whether annual financial statements have been filed. A developer that has not filed financials for two or more consecutive years is a red flag - it suggests either dormancy or an attempt to obscure liabilities.
Registered capital alone is not a quality indicator, but very low registered capital (under 10 million THB, indicative figure) for a developer selling units worth hundreds of millions of THB signals a structural mismatch between liability exposure and financial backing.
How do I verify the land title behind a project?
A chanote (officially Nor Sor 4 Jor) is Thailand's highest land title. It has GPS-verified boundaries and can be used as bank collateral. It is the minimum acceptable title for a condominium or villa project you intend to buy.
Your lawyer can conduct a title search at the provincial Land Office (กรมที่ดิน) in the district where the project sits. The search costs a small administrative fee and takes one to two working days. It reveals the current registered owner, any mortgage or encumbrance on the land, and the title class.
If the project land is mortgaged to a Thai bank as collateral for a construction loan, that is actually reassuring - it means a regulated lender has already conducted due diligence. Ask the developer for the bank's name and the loan facility letter. The risk scenario is land mortgaged to a private lender or fund with opaque terms, or land still in the name of a third party with no clear transfer mechanism.
How do I check EIA approval and building permits?
For condominium projects exceeding 80 units, or any building exceeding 10,000 square metres of total floor area, Thai law (per the Enhancement and Conservation of National Environmental Quality Act) requires a published EIA approval before construction begins. The EIA is submitted to the Office of Natural Resources and Environmental Policy and Planning (ONEP). Your lawyer can request confirmation of EIA status from ONEP or from the relevant local authority.
A building permit (ใบอนุญาตก่อสร้าง) is issued by the local municipality or the Department of Public Works. Ask the developer to show you the permit number and issue date. Cross-check that the permit matches the building specifications in the sales brochure - number of floors, total units, footprint. Discrepancies between the permit and the brochure are a serious red flag, as they suggest the developer may be building beyond approved plans.
Selling renders and taking reservations before a building permit is issued is legal in Thailand, but buying at that stage materially increases your risk. If the permit is subsequently denied or conditioned, the project could be redesigned or cancelled.
How do I assess construction financing risk?
Ask the developer two direct questions: 'Which Thai bank, if any, holds a project finance facility for this development?' and 'What percentage of construction cost is funded by bank credit versus buyer stage payments?'
A project financed primarily by bank project finance is lower risk. A regulated Thai bank has conducted its own credit assessment of the developer and monitors drawdowns against construction progress. If the bank withdraws funding, the project stalls - but the bank's prior diligence gives you an independent quality signal.
A project funded entirely by buyers' stage payments (common in off-plan sales) places the financial risk almost entirely on buyers. If sales slow, construction can slow or stop. This model is not automatically a red flag - many reputable Thai developers use it successfully - but it demands a much stronger track record check and milestone-linked payment schedule.
How do I verify a developer's completed-project track record?
Request a list of completed projects by name and address, not just by brochure image. Then:
- Search the project name against Thai court records (your lawyer can do this)
- Check whether the juristic person (the building's management body, legally required for condominiums under the Condominium Act) has been properly registered - this is a sign of genuine handover, not just physical completion
- Commission an independent inspection report from a licensed Thai engineer or surveyor for any completed project within travel distance
- Ask for the names of the construction contractor and structural engineer - reputable contractors will have their own verifiable records
Historical delay data matters. A developer whose last three projects were each delivered 18 months late is telling you something about operational capacity. Delays beyond 12 months from the contracted delivery date expose buyers to significant carrying costs: mortgage interest (if applicable), lost rental income (indicative: 5-7% gross yield per year on a mid-range Phuket or Chiang Mai unit, per market estimates), and currency exposure if you funded the purchase in a foreign currency.
How do I check for litigation history?
Your Thai lawyer can search the Thai Courts Information Center (courts.justice.go.th) and the DBD records for lawsuits involving the developer's registered company name. Look for:
- Active civil suits from previous buyers
- Labour disputes with contractors (a signal of unpaid subcontractors, which can halt construction)
- Revenue Department tax disputes
- Any bankruptcy petition, even if subsequently withdrawn
A single resolved dispute from a decade ago is not disqualifying. A pattern of buyer complaints across multiple projects, or any active bankruptcy-adjacent proceedings, is a hard stop.
What can I check online versus what needs a lawyer on the ground?
This distinction matters because many foreign buyers try to complete due diligence remotely. Some checks are genuinely feasible online; others are not.
Online (you can do this from abroad):
- DBD company registration and filed financials (dbd.go.th)
- Basic Google and Thai-language news search for the developer's name plus words like 'fraud', 'delay', or 'lawsuit'
- Thai Courts Information Center public case search
- ONEP project EIA database (limited English interface, but searchable)
Requires a licensed Thai lawyer on the ground:
- Official land title search at the provincial Land Office
- Full litigation search including lower courts and arbitration
- Review of the actual sale-and-purchase agreement (SPA) against standard Condominium Act requirements
- Verification that the building permit number matches the actual filed plans
- Confirmation that the developer's Foreign Exchange Transaction (FET) documentation procedures are correct - FET forms are the Bank of Thailand records that prove foreign funds were brought into Thailand, which you need to repatriate money or resell to another foreigner later
Budget 30,000 to 60,000 THB (indicative, 2026 market estimates) for a full independent legal due diligence package from a reputable firm with no connection to the developer or the selling agent.
Comparison table
| Check | Can you do it remotely? | Cost (indicative, 2026) | Red-flag threshold |
|---|---|---|---|
| DBD company registration | Yes - dbd.go.th | Free | Missing financial filings for 2+ years |
| Land title class (chanote) | No - Land Office only | 500-2,000 THB lawyer fee | Any title below chanote (Nor Sor 4 Jor) |
| EIA approval status | Partial - ONEP database | Free to low cost | No EIA for projects over 80 units |
| Building permit verification | No - local authority | Included in lawyer fee | Permit does not match brochure specs |
| Construction financing structure | Partial - ask developer | Free | 100% funded by buyer payments only |
| Completed-project track record | Partial - news, courts | Free to low cost | Delays over 12 months on prior projects |
| Full litigation search | No - courts and DBD | Part of lawyer package | Any active buyer lawsuits or bankruptcy filings |
| SPA review (contract) | No - requires Thai lawyer | 30,000-60,000 THB total | No milestone-linked payments, no delay penalties |
Risks and mistakes
Aggressive early-stage payment schedules
A developer asking for 30% or more upfront at reservation or before a building permit is issued is asking you to take on construction-phase risk with no legal completion guarantee. Standard practice for reputable Thai off-plan projects is a reservation deposit of 2-5%, followed by contract signing at 10-20%, with remaining instalments tied to foundation completion, structural completion, and handover. If the schedule front-loads payments without corresponding construction milestones, you are financing the developer's land acquisition, not your own unit.
No disclosed construction financing
A developer unable or unwilling to name a bank lender or explain how construction is funded should not receive your money. This is not about distrust - it is about understanding where your stage payments go if sales slow down. Without bank project finance, there is no independent monitor of cash flow, and buyer funds can be diverted to other obligations.
Unverifiable land title
Buying a unit on land with an inferior title (Nor Sor 3, Sor Por Gor, or land under dispute) exposes you to the risk that the title cannot support a registered condominium or that the boundaries are challenged. A title dispute that emerges after handover can prevent you from selling or mortgaging your unit, even if the building is physically complete.
No contractual delay penalties
If the sale-and-purchase agreement does not include a delay penalty clause - typically 0.01% of the purchase price per day of delay beyond the contracted handover date - you have no financial remedy if the developer is late. Without this clause, you can only pursue expensive civil litigation for damages, which may take years and cost more than the penalty itself.
Confusing renders with permits
Many buyers sign reservations based on architectural renders. A render is a marketing tool. It has no legal standing. Before you pay more than a small, refundable reservation deposit, confirm the building permit number and cross-check that the permit exists and matches the project. This single step eliminates projects that are at concept stage but presented as under construction.
Skipping the FET documentation requirement
If you are a foreign national buying a Thai condominium, your purchase funds must enter Thailand as a foreign currency transfer and be converted to Thai Baht. The receiving Thai bank issues a Foreign Exchange Transaction (FET) form (formerly called a Thor Tor 3 form) for each transfer. Without FET forms matching your purchase price, you cannot legally repatriate proceeds when you sell, and a future foreign buyer cannot take ownership. Many buyers discover this problem only at resale, years later.
FAQ
How do I check a Thai developer's track record if I am buying from abroad?
Start with the DBD database (dbd.go.th) for company registration and filed financials. Run a Thai-language and English-language news search combining the developer's name with terms like 'delay', 'lawsuit', or 'fraud'. Search the Thai Courts Information Center for active cases. For the land title, building permit, and contract review, you need a licensed Thai lawyer in the relevant province - remote checks alone are not sufficient.
What land title class is safe for a Thai property purchase?
Only a chanote (Nor Sor 4 Jor) is acceptable for a residential purchase. It has GPS-verified boundaries and can be registered at the Land Office. Titles below this grade carry boundary uncertainty and may not support a legally registered condominium or mortgage.
Is it safe to buy off-plan from a Thai developer I cannot visit?
It is possible, but it requires more rigorous remote due diligence: a confirmed building permit, a lawyer-verified land title, a published EIA approval (if applicable), and a detailed review of the sale-and-purchase agreement before any money moves. The payment schedule must link each instalment to a verified construction milestone, not to a calendar date.
What is a FET form and why does it matter for foreign buyers?
A Foreign Exchange Transaction (FET) form is issued by a Thai bank when you transfer foreign currency into Thailand and convert it to Thai Baht. For foreign nationals buying a condominium, FET forms are the legal proof that purchase funds came from abroad. Without them, you cannot repatriate sale proceeds and a foreign buyer cannot legally purchase your unit from you at resale.
How much should I budget for legal due diligence in Thailand?
For a full independent due diligence package - land title search, litigation search, permit verification, and SPA review - budget 30,000 to 60,000 THB (indicative, 2026 market estimates) for a reputable law firm with no connection to the selling agent or developer. This cost is small relative to the purchase price of almost any Thai property.
What payment schedule should I expect from a reputable Thai developer?
A reasonable off-plan payment structure is: 2-5% reservation deposit (refundable if due diligence fails), 10-20% at contract signing, then instalments of 10-15% each tied to foundation, structural frame, external shell, fit-out, and handover milestones. Final payment of 10-20% at the point of registered transfer of ownership. Any schedule that collects more than 30% before foundation completion warrants close scrutiny.
Can a foreign buyer enforce a delay penalty against a Thai developer?
Yes, if the penalty clause is in the signed sale-and-purchase agreement and the delay is documented. Thai civil courts can award the contractual penalty amount. However, enforcement takes time and legal cost. A penalty clause of at least 0.01% per day of the purchase price is standard and should be negotiated into the contract before signing.
What does it mean if a project has no EIA approval?
For projects legally required to have an EIA (generally over 80 units or 10,000 sq m of floor area), proceeding without one is a violation of Thai environmental law. The project can be ordered to stop construction. Buyers in such a project have limited recourse and may face years of delay or loss of investment while legal proceedings are resolved.
Should I trust a developer that only accepts cash or crypto payments?
No. Legitimate Thai developers accept bank transfers and issue official tax invoices. Payment methods that bypass the Thai banking system prevent you from obtaining FET documentation, create tax compliance problems, and remove any paper trail for a future dispute or resale.
What is a juristic person in a Thai condominium context?
A juristic person is the legally registered management body of a condominium, established under the Condominium Act once the building is completed and a minimum number of units are transferred. It holds the common-area budget, enforces building rules, and represents all owners collectively. A developer's completed project that has not registered a juristic person is a sign that the handover process is incomplete or disputed.
Planning a property purchase in Thailand? Send us your requirements - the THAI.ESTATE team will reply with specific options and a safety checklist for your case.