Editorial
Thai Developer Verification Checklist: 7 Checks Before You Pay
By THAI.ESTATE Editorial Team14 min read
Vetting a Thai developer before you transfer any money is the single most effective way to protect your investment. Thailand has no central developer-licensing registry, no mandatory construction insurance for buyers, and no escrow protection for off-plan purchases. That means the responsibility for due diligence sits entirely with you.
This guide gives you a step-by-step Thai developer verification checklist you can start working through today, from your home country, before you book a flight or sign a reservation form. Each check is matched to a specific risk and a concrete consequence if you skip it.
Quick answer
- Start with completed projects. A developer with fewer than two fully delivered projects is higher risk by default. Check that those projects received title deeds (chanote - the highest-grade land title in Thailand, confirming full ownership rights with GPS-surveyed boundaries) and that buyers were registered at the Land Department.
- Confirm the land title class before paying a reservation fee. Only a chanote (Nor Sor 4 Jor) supports full foreign condominium unit registration. Inferior titles (Nor Sor 3, Sor Por Kor) cannot be used to register foreign ownership and are a hard stop.
- Verify the EIA and building permit independently. An Environmental Impact Assessment (EIA) approval and a valid building permit must exist before construction starts legally. Renders sold before these documents are issued is a documented red flag in Thailand.
- Understand how construction is financed. Projects funded almost entirely by buyer instalments are materially riskier than those backed by a construction loan from a licensed Thai bank. Ask for the bank guarantee letter or financing disclosure.
- Check litigation history at the Civil Court. Any ongoing lawsuit naming the developer or its parent company is a signal that requires a lawyer's opinion before you proceed.
- Measure the payment schedule against construction milestones. A schedule that demands more than 20-30% of the purchase price before structural work begins is a red flag. Ethical developers tie payments to visible, verifiable construction stages.
- Budget for a licensed Thai lawyer. Independent legal verification costs roughly 15,000-40,000 THB (indicative, as of 2026) for a single project review. That fee can prevent a six- or seven-figure loss.
Options and scenarios
How do I check a Thai developer's completed-project track record?
The direct answer: search the Land Department's online portal (กรมที่ดิน) for the project address and cross-reference unit transfer records. In practice, this requires Thai-language access, so your lawyer is the efficient route.
What you can do yourself from abroad:
- Search the developer's company name in the Department of Business Development (DBD) database at dbd.go.th. This is free and in English. It shows registered capital, years of incorporation, and financial statements where filed. A developer with paid-up capital below 10 million THB and no audited accounts on record warrants extra caution.
- Search for the developer's previous project names combined with words like 'delayed', 'lawsuit' or 'unfinished' in English and Thai forums. Thai-language Pantip.com threads are a primary source of buyer complaints. Use Google Translate.
- Request a list of completed projects with Land Department transfer dates. A developer who cannot or will not provide this is not ready for your business.
- Visit or hire a local inspector to physically visit previous projects and confirm they are occupied and maintained. An empty building two years after declared completion is a warning sign.
How do I verify the land title behind the project?
The direct answer: only a chanote (Nor Sor 4 Jor) is suitable for a foreign condominium purchase. You verify it by checking the title document number with the local Land Office.
Step by step:
- Ask the developer for the title deed number, the Land Office district, and the plot number. Legitimate developers provide this without hesitation.
- Your lawyer visits or contacts the relevant Land Office and requests a title search (costs approximately 50-200 THB per plot, indicative). This confirms the current owner, any mortgages or liens, and any encumbrances.
- Confirm the land is not subject to a mortgage in favour of a bank unless that bank has issued a written guarantee to release individual units upon full payment. Many Thai construction loans encumber the entire land plot. If the developer defaults, buyers on that plot can lose their units even after paying in full.
- Check that the land is zoned for residential condominium use under the applicable Town Planning Act zone map for that province.
How do I check EIA approval and building permits?
The direct answer: both documents are public records. You or your lawyer can request copies from the issuing authority.
- EIA approval is issued by the Office of Natural Resources and Environmental Policy and Planning (ONEP). Projects above a threshold size (generally condominiums of 80 units or more, or buildings above 23 metres in certain zones) require it before construction. If the developer is selling units in a project that legally requires an EIA and cannot produce the approval number, stop.
- Building permit (ใบอนุญาตก่อสร้าง) is issued by the local municipality (tesaban) or the relevant local administrative body. It is document-numbered and date-stamped. Ask for the permit number and have your lawyer verify it at the issuing office.
- Projects marketed with finished renders, floor plans and sales offices but without a confirmed building permit are sold speculatively. This practice is legal in Thailand but places you at risk if the permit is later denied or modified. A modified permit can change floor counts, unit numbers, or shared facilities.
How do I assess construction financing risk?
The direct answer: ask the developer directly whether it has a construction loan from a licensed Thai bank, and request the bank's guarantee letter for individual unit releases.
Why this matters:
- A project funded solely by pre-sale buyer instalments has no independent financial backstop. If sales slow, construction can stall. Thailand has documented cases where projects stopped mid-build when off-plan sales fell short of cash-flow requirements.
- A bank-guaranteed project means a Thai licensed bank has assessed the developer, the land title, and the project plan before lending. The bank also typically issues letters confirming it will release a unit's title deed to the buyer upon full payment, even if the developer defaults on the construction loan. Request this letter in writing.
- Ask for the project's projected sell-through rate needed to complete construction. If the developer needs 80% of units sold before it can finish the building, and only 30% have been sold, your completion timeline is directly tied to their sales performance.
What does a payment schedule tell me about developer risk?
The direct answer: a payment schedule weighted heavily toward the front of the project timeline benefits the developer, not you. It reduces their financial risk and increases yours.
Safe benchmarks (indicative, based on market practice as of 2026):
- Reservation deposit: 50,000-200,000 THB, refundable if due diligence fails (negotiate this explicitly in writing)
- Contract signing payment: 10-20% of purchase price
- Construction milestone payments: 20-40% spread across 3-5 visible milestones (foundation complete, structure complete, fit-out complete, etc.)
- Final payment on transfer: 30-40% paid at Land Department registration
A schedule demanding 50% or more before construction begins is a red flag. If the developer stops building, recovering pre-paid funds through Thai courts takes years and is not guaranteed.
How do I check litigation history?
The direct answer: litigation checks in Thailand require a Thai-speaking lawyer to search the Civil Court and relevant Provincial Courts by company name.
- The Online Court System (e-Filing) of the Thai Courts allows registered searches. Your lawyer can run a company-name search for active or recently closed civil cases.
- Check for cases filed by buyers (breach of contract, failure to transfer title) and by creditors (unpaid construction contractors, material suppliers). Both indicate financial stress.
- A single minor dispute resolved years ago is less concerning than multiple ongoing cases or a pattern of contractor non-payment claims.
- Ask the developer directly for any disclosed disputes. A developer that hides known litigation is also more likely to hide other material facts.
What can I realistically verify online versus what requires a lawyer?
The direct answer: you can do preliminary checks online, but the four most important verifications require physical access to Thai government offices and Thai-language documents. Budget for a lawyer.
You can do from abroad (online):
- DBD company registration check (dbd.go.th) - English available
- General forum research on project complaints
- Google Maps and satellite imagery of the project site
- Developer website and social media history (check archive.org for past claims)
- Cross-checking quoted completion dates against current construction progress photos
Requires a lawyer or local professional:
- Land title search at the Land Office
- Building permit and EIA verification at municipal offices
- Civil court litigation search
- Review of the Sale and Purchase Agreement (SPA) in Thai
- Verification that the Foreign Exchange Transaction (FET) form - the document your bank issues when you wire foreign currency into Thailand, which is required to register foreign condominium ownership and later repatriate proceeds - is correctly referenced in the contract
Comparison table
| Verification check | Can you do it remotely? | Who does it? | Approximate cost (THB, indicative 2026) | Risk if skipped |
|---|---|---|---|---|
| DBD company registration | Yes | You | Free | Miss financial red flags |
| Completed project track record | Partly | You + lawyer | 0-5,000 | Buy from unproven developer |
| Land title (chanote) search | No | Lawyer | 1,000-5,000 | Title cannot support foreign ownership |
| Building permit verification | No | Lawyer | 1,000-3,000 | Project may be illegal or change design |
| EIA approval check | No | Lawyer | 1,000-3,000 | Project halted by authorities |
| Construction financing check | Partly | You + developer | 0 | Project stalls mid-build |
| Court litigation search | No | Lawyer | 3,000-10,000 | Developer in financial distress |
| SPA review | No | Lawyer | 10,000-25,000 | Unfair contract terms, no delay penalties |
Risks and mistakes
Paying a non-refundable reservation fee before due diligence
Many developers present reservation fees as a standard, non-negotiable step. In practice, fees of 50,000-200,000 THB are sometimes non-refundable by default in the paperwork. Always negotiate a refund clause tied to your due diligence period (10-20 business days is reasonable). If the developer refuses, treat that refusal as a data point.
Accepting a project brochure as proof of permits
A glossy brochure, a signed MOU, or a developer's verbal assurance is not a permit. Building permits and EIA approvals have document numbers and can be verified at the issuing authority. Do not accept photocopies as final confirmation. Your lawyer should verify the originals or contact the issuing office directly.
Ignoring the Foreign Exchange Transaction (FET) requirement
To register a condominium unit in a foreign buyer's name, Thai law (under the Condominium Act) requires proof that the purchase funds were transferred from abroad in foreign currency and converted to Thai Baht in Thailand. The bank issues an FET form (also called a Thor Tor 3 form) for this purpose. If the payment structure routes money through a Thai account without a proper FET record, you may be unable to complete registration - or unable to repatriate the sale proceeds later.
Assuming a large developer means a safe developer
Size is not the same as safety. Large developers have failed to deliver projects in Thailand. What matters is the specific project's permit status, financing structure, and payment schedule - not the developer's marketing materials or the number of billboards on Sukhumvit Road.
Skipping the delay-penalty clause in the contract
Thai law does not automatically impose a specific penalty rate for construction delays. The Sale and Purchase Agreement must explicitly state a daily or monthly penalty for delays beyond the agreed handover date. Without this clause, your only remedy is litigation. A standard contractual penalty of 0.01% of the purchase price per day is common; negotiate for this as a minimum and ensure there is also a right to cancel and receive a full refund if delay exceeds a set period (typically 12-24 months).
Relying on the developer's recommended lawyer
A lawyer introduced and paid by the developer does not represent your interests. Hire your own independent, licensed Thai lawyer. The cost difference between the developer's referral and your independent choice is small. The conflict-of-interest risk is not.
FAQ
What is the first thing I should check about a Thai developer?
Check their completed-project history first. Confirm that past projects received chanote title deeds and that buyers were successfully registered as owners at the Land Department. A developer who cannot demonstrate this track record has not proven they can deliver what they sell.
How do I verify a Thai building permit from outside Thailand?
You cannot verify a Thai building permit reliably from outside the country. Hire a licensed Thai lawyer to attend the relevant municipal office (tesaban or local administrative body) in person and confirm the permit number, issue date, and scope. Your lawyer can then send you the verified documentation.
What does a chanote title deed mean and why does it matter?
A chanote (Nor Sor 4 Jor) is the highest-grade land title in Thailand. It confirms GPS-surveyed boundaries, full ownership rights, and government recognition. Only land held under a chanote can support the legal registration of a foreign-owned condominium unit. Lower-grade titles do not provide the same legal security and cannot be used for foreign ownership registration under the Condominium Act.
Is it safe to buy in a project that has not yet received a building permit?
It carries measurable risk. If the permit is later denied, the project cannot be built. If the permit is modified, floor counts, unit layouts, or facilities can change. You can proceed, but only with a refundable reservation deposit, a clear contractual clause entitling you to a full refund if the permit is not issued by a specific date, and independent legal review before you sign anything binding.
What payment schedule should I accept for an off-plan Thai condo?
Accept a schedule where the largest payment (30-40% of the purchase price) falls at the point of title transfer at the Land Department. Avoid schedules that demand more than 20-30% of the total price before structural work is independently verifiable. Ensure each milestone payment is triggered by a defined, observable construction event - not a calendar date.
How do I find out if a Thai developer has been sued?
Your lawyer searches the Civil Court and relevant Provincial Courts by the developer's company name through the Thai court's electronic filing system. This search covers active cases and recently closed cases. It should also include the parent company and any major subsidiary names that the developer uses for specific projects.
What is an FET form and why do I need one as a foreign buyer?
An FET (Foreign Exchange Transaction) form - also called a Thor Tor 3 form - is issued by a Thai bank when you transfer foreign currency into Thailand and it is converted to Thai Baht. Under the Condominium Act, this form is required documentation to register a condominium unit in a foreign buyer's name. It is also required later if you want to repatriate sale proceeds or rental income abroad. Keep every FET form from every payment you make.
Can I rely on the project's sales agent to do my due diligence?
No. Sales agents, whether employed by the developer or working as independent brokers, are paid on commission when you buy. Their financial interest is in completing the transaction, not in protecting you from risk. Treat everything an agent tells you as a starting point for your own independent verification, not as a final answer.
What happens if the developer defaults mid-construction?
You become an unsecured creditor in a Thai insolvency or civil enforcement process. Recovery is possible but slow - typically several years through the courts. Your best protections are: a payment schedule that limits your exposure before completion, a contract with a cancellation and full-refund clause for defined failure events, and confirmation that the project land is not mortgaged to a bank without individual unit release guarantees. These protections must be in the contract before you sign.
How much should I budget for independent legal due diligence in Thailand?
For a single off-plan condominium purchase, independent legal due diligence including title search, permit verification, court check, and SPA review typically costs 15,000-40,000 THB (indicative, 2026). For a higher-value purchase or a more complex structure, budget more. This cost is fixed regardless of purchase price and represents a small fraction of the risk it mitigates.
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.