Between 2023 and 2025, more than 140 new condominium and villa projects were registered in Phuket alone. Based on our estimates, at least 18 of those recorded construction delays exceeding 12 months. For any buyer committing capital at the off-plan stage, rigorous developer due diligence is the only realistic line of defence against loss of funds.
Our analysts monitor the Thai market on the ground year-round. The methodology below covers every verification step we apply when assessing developers and projects in Phuket and Koh Samui as of 2026. Each step is anchored in measurable criteria and clearly defined warning thresholds.
Quick answer
- We verify developer track record: a minimum of two completed projects delivered with no more than 6 months of delay is our baseline requirement
- We assess construction financing structure: projects funded exclusively from buyer deposits, with no bank credit line, carry materially higher risk of construction stoppage
- We inspect previous projects on the ground: facade condition, mechanical systems, and common areas after 2 to 3 years of occupancy reveal what marketing materials never show
- We check permit completeness: EIA (Environmental Impact Assessment) for projects exceeding 79 units, building permit (Ror. 1), and Chanote or Nor Sor 3 Gor title on the land
- We flag payment schedules requiring more than 40% of the purchase price before foundation work begins as a warning signal
- Thailand has no escrow mechanism for foreign property buyers in the conventional sense. The practical protections available are a payment schedule tied to construction milestones, contractual penalty clauses, and the developer's financial standing
Options and scenarios
Step 1: Developer track record
We cross-reference on-the-ground observation with the public company registry maintained by the Department of Business Development (DBD), accessible online. The core questions we ask: How many projects has this developer completed and handed over? What was the average delay against the declared timeline? Is the project entity the same legal company as in prior developments, or does the developer incorporate a new vehicle for each project?
Warning threshold: any developer with zero completed projects, or with a documented pattern of delays exceeding 12 months. The use of a separate special-purpose vehicle (SPV) per project is common practice in Thailand and is not inherently disqualifying, but it does complicate any future claims. In those cases we trace the capital and management linkages between entities.
Step 2: Construction financing structure
In our dataset we distinguish three financing models used by Thai developers.
Bank project finance means the developer holds a credit facility with a Thai commercial bank. The bank independently monitors construction progress. This represents the strongest available third-party oversight.
Mixed financing combines a bank credit line with pre-sale proceeds. This is the most common model in the Phuket mid-market segment, roughly covering units priced between 5 and 30 million THB.
Buyer-deposit-only financing means the developer deploys no bank capital. Construction advances only as long as new sales generate fresh deposits.
Warning threshold: no disclosed bank financing on a project with a total development value exceeding 200 million THB. In that scenario, any slowdown in sales velocity can halt construction entirely.
Step 3: On-site inspection of previous projects
Our analysts visit completed developments and assess the following: structural condition of buildings 2 to 5 years after handover (cracks, water ingress, rebar corrosion), quality of common areas including pools, lobbies, and access roads, whether a sinking fund is actively maintained, and direct feedback from current owners and property managers.
We conduct these inspections across Phuket districts - Bang Tao, Layan, Kamala, Surin, Rawai, Nai Harn - and on Koh Samui in Bophut, Maenam, and Chaweng. Photographs and field notes from each inspection are included in the research brief we prepare.
Step 4: Permit verification
The document set we require before issuing a recommendation covers four items.
Chanote (Nor Sor 4 Jor) is the full freehold title. We verify at the Land Office that the plot carries no mortgage encumbrances or servitudes.
Building permit (Ror. 1) must be issued by the relevant local authority, either Tessaban or Or Bor Tor, depending on jurisdiction.
EIA (Environmental Impact Assessment) is required by law for condominium projects exceeding 79 units or buildings taller than 23 metres. An absent EIA where one is legally required is grounds for an immediate negative recommendation.
Developer registration under the Condominium Act B.E. 2522 requires the project to be formally registered with the Land Department before units can be sold.
Warning threshold: any marketing or reservation activity before the Ror. 1 building permit has been issued.
Step 5: Contract and payment schedule analysis
We review reservation agreements and sale and purchase agreements against four criteria.
Payment phasing: a sound schedule allocates 20 to 30 percent at contract signing, with subsequent tranches linked to verified construction milestones (foundation, structural frame, fit-out), and the remainder due at handover.
Delay penalties: the market standard in Phuket runs between 0.01 and 0.05 percent per day of the deposited amount for each day beyond the agreed completion date.
Termination rights: the buyer should retain a contractual right to exit and recover deposits if delays exceed a defined threshold, typically 6 to 12 months.
Material specifications: the contract should identify brands and standards for finishes, not leave them to the developer's discretion at handover.
Warning threshold: a schedule requiring more than 50% of the purchase price before structural completion. In our experience, this pattern appears predominantly among developers operating without bank financing.
Step 6: Developer financial health
We obtain audited financial statements from the DBD registry (cost: approximately 500 THB per report, roughly 14 USD at Q1 2026 exchange rates). We review equity versus liabilities, operating profit trend over the past 2 to 3 years, and the ratio of total debt to the value of projects currently under development.
Step 7: Location analysis and rental yield potential
For buyers with an income objective, we cross-reference data from booking platforms and local property managers. In Bang Tao and Layan, we track occupancy in the range of 65 to 75 percent during the high season (November through April) and 35 to 50 percent in the low season, based on our estimates for 2025. Rental management fees in Phuket typically run between 20 and 30 percent of gross revenue. We factor both figures into any yield projection we present.
Comparison table
| Parameter | Low-risk developer | Medium-risk developer | High-risk developer |
|---|---|---|---|
| Completed projects | 3 or more, delay under 6 months | 1-2 projects, delay under 12 months | Zero completed, or delay over 12 months |
| Financing structure | Bank project finance | Mixed (bank credit + deposits) | Buyer deposits only |
| Permit status | Chanote, Ror. 1, EIA all in place | Chanote and Ror. 1 in place, EIA pending | Ror. 1 absent or EIA missing where required |
| Pre-foundation payment | Up to 30% of price | 30-40% of price | Over 50% of price |
| Penalty clause | 0.05% per day, termination right included | 0.01% per day, limited termination right | No penalty or symbolic rate only |
| Financial disclosure | Operating profit, positive equity | Moderate leverage | No data disclosed or reported losses |
| Our assessment | Proceed to full analysis | Requires deeper verification | We advise against proceeding |
Risks and mistakes
Relying on marketing materials instead of legal documents and financial statements. A polished CGI render does not substitute for a verified Chanote and a valid Ror. 1 permit.
Assuming deposit protection mechanisms equivalent to those in regulated European markets exist in Thailand. They do not. The practical protections available to a foreign buyer are the contractual structure, the milestone-linked payment schedule, and the developer's own financial position.
Skipping physical inspection of completed projects. Website photographs are typically taken at handover. Three years of tropical weather and actual occupancy reveal far more about construction quality than any promotional image.
Underestimating currency risk. The THB/USD exchange rate fluctuated meaningfully through 2025. Buyers making staged payments over an 18 to 24 month construction period are exposed to those movements on every tranche. We recommend building a currency buffer into total cost projections.
Not verifying whether the developer creates a new SPV for each project. A company with registered capital of 1 million THB developing a project valued at 500 million THB is a structural warning signal, regardless of the developer's marketing profile.
Ignoring hillside zoning and permit complexity. In our 2025 and 2026 data sets, the highest concentration of delays and permit problems appears in hillside projects in the Kamala-Surin corridor and in less-regulated pockets of Rawai. Districts with established infrastructure - Bang Tao and Layan in particular - show a statistically lower incidence of problematic developments.
FAQ
Does Thailand have any deposit protection mechanism for foreign property buyers?
No formal mechanism equivalent to European escrow or client money accounts exists for foreign buyers of Thai real estate. The available protections are contractual: a payment schedule tied to construction milestones, penalty clauses for delays, and termination rights written into the sale and purchase agreement.
How do we verify a developer's track record in Phuket?
We access the Department of Business Development (DBD) company registry online, retrieve audited financial statements (approximately 500 THB per report), conduct on-site visits to previously completed projects, and collect direct input from current owners and property managers in those developments.
What level of construction delay is considered acceptable?
Based on our monitoring of the Thai market, a delay of up to 6 months falls within the range we consider typical. A delay exceeding 12 months triggers a formal review of the developer's financial position and the underlying cause before we issue any further recommendation.
What is a safe deposit level before construction begins?
We recommend payment schedules where the amount due before foundation works does not exceed 30% of the purchase price. Any schedule requiring more than 50% before structural completion represents a warning threshold in our methodology.
What is an EIA and when is it legally required in Thailand?
An Environmental Impact Assessment is a mandatory government review required for condominium projects exceeding 79 units or buildings taller than 23 metres. A project that meets these thresholds but lacks a completed EIA carries serious legal exposure for all buyers.
How do we verify the Ror. 1 building permit?
We check the Ror. 1 document directly at the relevant local administrative office - Tessaban or Or Bor Tor depending on the project location. We confirm that the permitted scope matches the actual development plan and that the permit remains valid.
Is bank financing a legal requirement for Thai developers?
No, it is not. However, the presence of a bank credit facility provides independent construction monitoring that buyer deposits alone cannot replicate. The absence of any bank financing on a project with a total value above 200 million THB is a risk factor we weight heavily in our assessments.
Which Phuket districts carry the highest developer risk?
Based on our 2025 to 2026 data sets, hillside projects in the Kamala-Surin area and developments in less-regulated parts of Rawai show the highest incidence of permit issues and construction delays. Bang Tao and Layan, where infrastructure is well established, record a lower proportion of problematic projects in our tracking.
What does a low-risk developer profile look like in practice?
Three or more completed projects delivered within 6 months of the declared date, a bank project finance facility in place, a full permit stack including Chanote, Ror. 1, and EIA where required, a payment schedule capped at 30% before foundation, and audited financials showing positive operating profit and equity.
Researching property in Phuket or Koh Samui? Get in touch - our analysts will prepare a data brief for your shortlisted location.