Red Flags When Buying Off-Plan in Thailand: 12 Warning Signs
Guaranteed yields above 10%, no EIA, no escrow — 12 red flags that signal a dangerous off-plan property purchase in Thailand. Due diligence checklist for 2026.
Red Flags When Buying Off-Plan in Thailand: 12 Warning Signs
Thailand’s off-plan property market has produced exceptional returns for well-informed buyers — and significant losses for those who didn’t know what to look for. The most common warning signs are: guaranteed yields above 10% (almost always unsustainable), no valid EIA license before sales launch, developer with no completed projects on record, absence of buyer funds escrow, and units priced significantly below comparable projects in the same area. This guide covers 12 specific red flags every buyer should check before signing anything. Identifying even one of these should trigger deeper investigation or a full withdrawal.
Not sure about a project you're considering?
MORE Group conducts independent due diligence on every project we list — 800+ properties, 0% buyer commission.
Red Flag 1: Guaranteed Rental Yield Above 10%
The most common and most dangerous red flag in Thai off-plan marketing. Yields above 10% guaranteed (i.e., contractually promised by the developer regardless of actual rental performance) are structurally unsustainable in Phuket’s real economy.
Why it’s a problem:
- Phuket’s average gross rental yield on well-managed properties: 7–9%
- After management fees (20–35%), maintenance, and vacancies: net yield is 4–6%
- A developer promising 10%+ guaranteed is almost certainly using new buyer deposits to fund existing investors’ “yield” — a Ponzi-like structure
- When the developer runs out of new buyers, payments stop
What to do: Ask for the last 3 years of actual rental income statements for a comparable unit in the project (or sister project). If the developer cannot or will not provide this, the guarantee is not backed by real income.
Context: 7–9% gross yield guarantees backed by a genuine rental pool and transparent management accounts are more plausible. 10%+ is a marketing number, not a business model.
Red Flag 2: No Valid EIA License
Thailand’s Environmental Impact Assessment (EIA) approval is required before construction can legally begin on most projects. Many developers begin marketing and taking reservations before EIA approval, which is a legal risk for buyers.
The risk: If EIA approval is denied or conditions imposed change the project design, the developer may need to reduce building height, change unit layouts, or in rare cases abandon the project entirely.
What to ask: “Can you provide the EIA approval certificate?” If the project hasn’t received EIA yet, ensure the SPA includes a provision for full deposit refund if EIA is denied.
Note: Pre-EIA reservations are technically common in Thailand and don’t automatically signal fraud — but they are a legal risk that should be documented in your purchase agreement.
Red Flag 3: No Building Permit
The building permit (Bai Anuyat Kor Sang / ใบอนุญาตก่อสร้าง) is distinct from the EIA. It’s the operational permission to break ground. Developers who are selling units without a building permit face administrative barriers to construction.
Check: Ask to see the building permit number and issuance date. If construction has already started without a permit, this is an immediate legal red flag — construction may be ordered to stop.
Red Flag 4: Developer Has No Completed Projects
A developer with no completed, delivering track record is asking you to take a leap of faith with $100,000–$500,000. The Phuket market has examples of developers who took deposits, began construction, then ran out of capital or disappeared.
How to check:
- Ask for a list of completed projects with addresses
- Visit at least one completed project (physically or via Google Maps)
- Talk to residents or management company staff at a completed project
- Search the developer’s company registration on the Thai Department of Business Development portal (DBD.go.th)
Context: Every developer was once “first project only.” The test is whether they have delivered anything at all. A developer with one completed project and construction clearly progressing on the current one is in a very different risk category from a developer with zero track record.
Red Flag 5: No Buyer Funds Escrow
In a robust off-plan purchase, buyer payments during construction are held in an escrow account that the developer cannot access until construction milestones are met. Without escrow, your payments go directly into the developer’s operating account — available for any purpose, including servicing debt or other projects.
Thailand reality: Escrow for property is not legally mandated in Thailand (unlike some other jurisdictions). Many legitimate developers do not use escrow. But its absence means your deposit is entirely dependent on the developer’s financial health and integrity.
What to look for instead: Progressive payment schedules tied to construction milestones (foundation, frame, topping out, handover) distribute your risk. A developer who wants 40–50%+ upfront with no milestone triggers is asking for more trust than is reasonable.
Red Flag 6: Units Priced Significantly Below Market
If a project in Bang Tao is selling 1BR condos at $120,000 when every comparable project is at $200,000+, something is wrong. Below-market pricing signals:
- Developer in financial distress needing cash urgently
- Location or quality significantly inferior to what marketing suggests
- Title issues (leasehold being presented as freehold, foreign quota problems)
- A “bargain” that is not what it appears to be
What to do: Research comparable projects within 1–2km and calculate price per sqm. If the project is more than 20–25% below comparables without an obvious legitimate reason (inland location, no pool, genuinely early-stage), investigate thoroughly.
Red Flag 7: Foreign Quota Already Full or Near Full
Thailand’s Condominium Act limits foreign freehold ownership to 49% of a building’s total registered area. In popular projects, this quota can fill quickly — and in some older or heavily foreign-targeted projects, it may already be full.
The problem: If you buy into a project where the foreign quota is full or near full at launch, you may not be able to hold freehold at transfer — you’ll be forced into a Thai company structure or leasehold arrangement. This reduces your resale pool significantly.
How to check: Ask the developer for the current foreign quota status and the total freehold area. Get this confirmed by your own lawyer, not just from the developer’s sales team.
Let MORE Group run the checks you can't do alone.
Our team verifies EIA, permits, foreign quota, and developer track record on every recommended project.
Red Flag 8: Vague or Incomplete Construction Timeline
A developer who cannot give you a specific construction schedule — foundation milestone dates, structural completion, handover dates — is either disorganised or hiding delays. Legitimate developers have construction contracts with contractors, milestone payments, and projected timelines.
What to ask:
- What is the projected handover date?
- What construction milestones trigger buyer payment instalments?
- Has the project experienced any delays so far?
- What is the penalty clause if handover is delayed beyond X months?
Red flag language: “We expect to complete in approximately 2–3 years” with no specific milestones or dates.
Red Flag 9: Unlicensed or Unknown Agent
In Thailand, real estate agents are not officially licensed as a profession (no mandatory state license system as of 2026). But agents can still be categorised by reputation, established track record, and professional conduct.
Red flags in agents:
- No verifiable track record or client reviews
- Presents you with only one developer (often a referral fee arrangement)
- Cannot explain EIA, building permit, or title details when asked
- Pushes for same-day reservation deposits
- Cannot provide independent legal contacts
Note: Even with a trustworthy agent, you should engage your own independent Thai lawyer to review all purchase documents.
Red Flag 10: No Separate Juristic Person (Building Management Body)
A condominium project in Thailand must establish a juristic person (niti bukhon) — a registered body that manages the common areas independently of the developer. Without this, the developer controls all common area decisions indefinitely.
Why it matters for resale: Buildings without an established, functional juristic person are harder to manage, often poorly maintained, and less attractive to informed resale buyers.
Red Flag 11: Rental Pool with No Exit Option
Some developers structure rental pools where your unit is locked into the hotel’s rental program for 3, 5, or 10 years with no ability to exit or lease independently. If you want to sell, some of these agreements have clauses that restrict transfer — making resale complicated.
What to check in the rental pool agreement:
- What is the lock-in period?
- Can you withdraw from the rental pool if you sell?
- Does the rental agreement transfer to the new buyer, and is this an obstacle?
- Are yields guaranteed or performance-based?
Red Flag 12: Pressure to Sign Without Legal Review
Any developer or agent who pressures you to sign a Reservation Agreement or SPA without giving you adequate time (minimum 5–7 business days) to have a lawyer review the documents is not operating ethically.
Standard market practice: Reservation deposit to hold a unit is typically ฿100,000–฿200,000 ($2,800–$5,600) and is refundable within 7–14 days while you complete due diligence. Any developer who says the deposit is non-refundable immediately upon signing is creating unnecessary buyer pressure.
Summary: Red Flag Severity Grid
| Red Flag | Severity | Action |
|---|---|---|
| Yield guarantee over 10% | Critical | Walk away unless backed by documented income |
| No EIA license | High | Ensure SPA protects deposit if denied |
| No completed projects | High | Deep investigation required |
| No building permit | High | Do not pay until resolved |
| Units 25%+ below market | High | Investigate title and financials |
| Foreign quota full | High | Verify independently |
| No escrow (large upfront payment) | Medium-High | Seek milestone-based payment plan |
| Pressure to sign immediately | Medium-High | Walk away from that agent |
| Vague construction timeline | Medium | Request written schedule |
| No juristic person plan | Medium | Ask for timeline |
| Rental pool lock-in | Low-Medium | Review contract terms |
| No independent legal review offered | Low | Engage your own lawyer |
FAQ
Frequently Asked Questions
Almost never. Phuket's market delivers gross yields of 7–9% on well-managed properties; after fees and vacancies, net yields are 4–6%. A developer contractually guaranteeing 10%+ is typically funding those payments from new buyer deposits rather than genuine rental income — a structure that collapses when sales slow. Always ask for documented rental income from a comparable unit in the same or sister project.
You don't need EIA approval to make a reservation, but you should ensure it exists (or is explicitly pending) before making substantial payments. If the developer cannot provide the EIA certificate number, ensure your SPA includes a full refund clause in the event EIA is denied. Never pay a 20%+ deposit on a project without EIA approval.
Without escrow, your deposits are unsecured creditor claims against a potentially insolvent company — recovery is uncertain and often partial. With milestone-based payments, you've limited your exposure to the portion paid. In Thailand, there is no government-backed buyer protection scheme for property deposits. This is why developer track record and financial stability are so critical.
Search the company registration on the Thai Department of Business Development portal (DBD.go.th). Request a list of completed projects and physically visit at least one. Check land registry records for completed project titles. Ask for financial statements (some developers will provide these for serious buyers). Read forums like Stickman Bangkok and Thaivisa for community-reported issues with specific developers.
It depends entirely on what your Reservation Agreement and SPA say. Some agreements have 7–14 day cooling-off periods; others have non-refundable deposits from day one. This is exactly why you must have an independent Thai lawyer review all documents before signing anything. Never assume a deposit is refundable — confirm this in writing before paying.
Related Guides
- How to Evaluate a Phuket Condo Project: Investor’s Checklist
- Developer Reputation Checklist: How to Vet a Thai Property Developer
- What Documents to Check When Buying Property in Thailand
- Due Diligence Process in Thailand Step by Step
- Risks of Buying Property in Phuket
Get a Free Property Consultation
Tell us your budget and goals — our expert will contact you within 2 hours.
MORE Group Editorial
Phuket Real Estate Experts
The MORE Group team has helped 500+ European and American buyers purchase property in Thailand. We provide legal support, 0% commission, and on-the-ground expertise since 2018.
Get a Free Property Consultation
Tell us your budget and goals — our expert will contact you within 2 hours.