Off-Plan Payment Milestones in Thailand: What to Expect
Complete breakdown of off-plan payment milestones in Thailand: 6 stages, typical percentages, verification tips, and what happens if a developer misses a milestone.
Off-Plan Payment Milestones in Thailand: What to Expect
Off-plan payment schedules in Thailand typically follow 5–6 milestones spread over 2–4 years of construction. The reservation deposit is usually 50,000–200,000 THB, followed by 25–35% at SPA signing, then 10–15% payments triggered by construction stages (foundation, structure, interior finishes), with the remaining balance due at handover. Each milestone is triggered by verified construction progress, not calendar dates.
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Why Milestone-Based Payments Exist
Unlike purchasing a completed property where you pay the full sum and receive keys, off-plan purchases spread payments across construction. This protects both parties: the developer receives funds to build, while the buyer retains leverage — later payments are only triggered when agreed milestones are genuinely reached.
The milestone structure is embedded in the Sale and Purchase Agreement (SPA), which is the legally binding contract you sign within 30–60 days of your reservation. Understanding every milestone — what triggers it, how to verify it, and what your rights are if it’s missed — is essential before committing.
The Standard 6-Stage Payment Schedule
| Stage | Trigger | Typical % of Purchase Price | Timeline |
|---|---|---|---|
| Reservation | Unit hold (price lock) | Fixed: 50,000–200,000 THB | Day 1 |
| SPA Signing | Contract execution | 25–35% | Days 30–60 |
| Foundation Complete | Confirmed construction start | 10–15% | Months 3–6 |
| Structure Complete | Frame/shell finished | 10–15% | Months 9–18 |
| Interior Works | Fit-out confirmed | 10–15% | Months 18–30 |
| Handover / Completion | Keys + Title transfer | Remaining balance | Months 24–48 |
Note: Percentages vary by developer and project. Luxury developments sometimes require higher SPA deposits (40–50%). Budget projects occasionally split payments into more stages with smaller amounts per installment.
Stage 1: Reservation Fee
The reservation fee (also called Booking Fee or BF) is the first payment you make to secure a specific unit. It is typically:
- 50,000–100,000 THB for budget to mid-range condos
- 100,000–200,000 THB for mid-range to premium condos
- 200,000–500,000 THB for luxury villas and high-end units
- Some developers accept $2,500–5,000 USD equivalent
The reservation locks in your unit at the quoted price and takes it off the market for 7–14 days — giving you time to arrange legal review and SPA signing preparation.
Refundability: Reservation fees are usually non-refundable once the hold period passes, typically after 7–14 days. Some developers offer a 48-hour “cooling off” window, but this is not standardized in Thai law. Confirm refund conditions before paying. See Reservation Agreement in Thailand for the full breakdown.
Stage 2: SPA Signing (25–35%)
The Sale and Purchase Agreement signing is the largest single payment in most off-plan purchases. This is a real legal contract that binds both the developer and buyer to the terms. You should have a lawyer review the SPA before signing.
Key things the SPA governs:
- Exact payment schedule with all milestones defined
- Completion date (and grace period — typically 12–24 months beyond projected finish)
- Penalty clauses if either party defaults
- Unit specifications (size, fixtures, finishes, furniture package if included)
- Common area descriptions (pool, gym, reception — what’s confirmed vs indicative)
- Force majeure provisions (pandemic, natural disaster — how delays are handled)
The SPA payment is due within 30–60 days of reservation. Transfer this amount from your overseas bank account to receive the FET certificate required for foreign freehold registration. See our guide on bank transfers for Thai property for the correct process.
Stage 3: Foundation Complete (10–15%)
This payment is triggered once the developer confirms the foundation work is done. On a typical 3-year construction timeline, this occurs at approximately months 3–6 from construction start.
How to verify: Reputable developers send progress reports with photos and construction updates. For additional confidence:
- Request certified architect or engineering sign-off on the stage
- Visit the site yourself if you’re in Phuket (or have an agent do so)
- Some developers use third-party project monitoring services
Payment method: Transfer from your overseas account. Always keep records of each transfer — you’ll need them for the FET certificate process at final registration.
Stage 4: Structure Complete (10–15%)
The structural completion milestone means the building’s frame, floors, and external shell are finished. The property is now “weathertight” — windows and doors are typically installed at this stage.
On a 36-month construction cycle, this milestone typically falls around months 12–18. In practice, you should expect delays of 3–6 months as normal for Phuket construction (weather, supply chain, permit processing).
Stage 5: Interior Works Complete (10–15%)
Interior milestone payments are triggered when fit-out is substantially finished — tiles laid, bathrooms installed, kitchen completed, air conditioning units in. This is typically 6–9 months before final handover.
What to watch for: Some developers issue an interior milestone invoice when work is only 50–60% complete. Your SPA should define what “interior complete” means specifically — if it doesn’t, push for clarification in writing before paying.
Stage 6: Handover / Completion (Remaining Balance)
The final payment — typically 20–35% of the total purchase price — is due upon successful handover. This is when:
- You conduct a snagging inspection (walk-through to identify defects)
- The developer rectifies agreed snags (or you negotiate a retention amount)
- You transfer title at the Land Office
- You receive keys and ownership documents
Do not pay the final balance before completing your snagging inspection. This is your last point of leverage. See Handover Risks for Off-Plan Projects in Thailand for common issues and how to handle them.
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How to Verify Construction Milestones
You don’t have to trust the developer’s word that a milestone is complete. Legitimate methods for independent verification:
1. Site visits If you’re in Phuket, visit the site personally before making each payment. If you’re overseas, appoint a local representative under Power of Attorney to inspect on your behalf.
2. Progress reports Reputable developers provide monthly or quarterly construction updates with photos, video walkthroughs, and progress percentages. Request these if not provided automatically.
3. Third-party project monitors Some buyers engage independent construction consultants to verify milestone completion — particularly for high-value purchases above $500,000. Cost is typically $500–2,000 per inspection.
4. Architect certification Request that milestone completion is certified by the developer’s lead architect or structural engineer before each payment. This creates a paper trail and adds accountability.
What Happens If the Developer Misses a Milestone?
Your SPA should include penalty clauses for developer delays. Standard provisions:
- Grace period: Developer typically gets 12–24 months beyond projected completion before buyer can formally claim breach
- Penalty interest: Some SPAs entitle buyers to 0.01–0.1% per day of delayed payment on the outstanding balance
- Termination right: If delay exceeds grace period, buyer may have right to terminate and receive refunds (typically principal only, not investment return)
- Force majeure: COVID-19 established precedent for broader force majeure claims — check if your SPA includes modern language
If a developer defaults: Engage a Thai property lawyer immediately. Options include negotiated settlement, lodging a complaint with the Consumer Protection Board, or civil litigation. Prevention is far better than cure — always buy from developers with a track record of completed projects.
Currency Considerations Across Multiple Payments
Off-plan purchases require multiple transfers over 2–4 years. Exchange rates will fluctuate — potentially significantly. If you’re buying in THB with USD, EUR, or GBP:
- A 5% shift in the THB/USD rate on a $250,000 purchase is $12,500 difference
- Consider staging purchases to average the exchange rate (dollar-cost averaging)
- Some developers allow pricing in USD — this removes THB fluctuation risk
- See our Exchange Rate Risk Guide for detailed strategies
Full Payment Timeline Example: $200,000 Condo (3-Year Build)
| Date | Stage | % | Amount (USD) | Notes |
|---|---|---|---|---|
| Month 0 | Reservation | — | $3,000 | Price lock, non-refundable |
| Month 1 | SPA Signing | 30% | $60,000 | Main contract, FET needed |
| Month 6 | Foundation | 10% | $20,000 | Verify with site visit |
| Month 14 | Structure | 10% | $20,000 | Frame/shell complete |
| Month 22 | Interior | 10% | $20,000 | Fit-out confirmed |
| Month 36 | Handover | 40% | $80,000 | After snagging inspection |
| Total | 100% | $200,000 |
FAQ
Frequently Asked Questions
Yes, especially for higher-value purchases. Developers often accommodate buyers requesting fewer, larger payments (e.g., combining foundation and structure milestones) or extended SPA payment timelines. However, they rarely agree to push back the initial SPA deposit percentage, as this funds early construction. Negotiation is most effective before the reservation agreement is signed.
Your SPA will specify grace periods (typically 30–60 days) before the developer can issue a formal default notice. After the grace period, developers may charge penalty interest (often 1.5% per month) and — in extreme cases — terminate the contract and retain your deposit. If you anticipate payment difficulty, communicate with the developer early; many will agree to short extensions rather than face the legal and administrative cost of termination.
No. Most milestone payments can be made by international bank transfer. You do need to be present (or have a Power of Attorney representative) only at the Land Office title transfer at final handover. The rest of the process — including SPA signing — can often be handled remotely with proper documentation and legal support.
Functionally similar but legally different. Mortgage payments go to a bank that owns the property until you pay off the loan. Off-plan milestone payments go directly to the developer, and the property isn't technically yours until handover and Land Office registration. Unlike a mortgage, most developer installment plans charge 0% interest, making them an attractive alternative to traditional financing.
Each time you transfer money from overseas to Thailand specifically for a property purchase, your Thai bank should issue a Foreign Exchange Transaction (FET) certificate for that transfer. You'll need FET certificates for all transfers (minimum totaling the purchase price) to register foreign freehold at the Land Office. Request the FET certificate immediately after each transfer — banks can be reluctant to issue them retroactively.
Related Guides
- Reservation Agreement in Thailand: What You’re Signing
- Sale and Purchase Agreement in Thailand: Complete Guide
- Handover Risks for Off-Plan Projects in Thailand
- Bank Transfers for Thai Property
- International Transfers for Thai Property
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