Investing in an off-plan property in Thailand — especially in sought-after destinations like Koh Samui — can be a smart move, offering attractive pricing, customization options, and long-term value. But it also comes with a set of risks that any investor or future homeowner must understand.
In this article, we explore the ins and outs of buying off-plan in Thailand: the benefits, the risks, the guarantees you should expect, and the best practices to protect your investment.
What Does “Buying Off-Plan” Mean?
Buying off-plan refers to purchasing a property before it is built — either during the planning stage or while construction is still in progress. The buyer relies on architectural renderings, floorplans, and the developer’s reputation to make their decision.
Key Advantages of Buying Off-Plan in Thailand
1. Lower purchase price
Off-plan properties are typically 15–30% cheaper than completed homes. Early buyers often benefit from significant capital appreciation as the property nears completion.
2. Flexible payment schedules
Developers usually offer phased payments tied to construction milestones, easing cash flow and allowing for better financial planning.
3. Customization options
Buyers can often choose finishes, layouts, and other details — something rarely possible with ready-built properties.
4. First pick of location
Off-plan buyers can often choose the best units (e.g. top floor, best view, largest plot) before they are sold.
Main Risks to Consider
1. Construction delays
Weather, permits, or funding issues can delay the build, especially in island environments like Koh Samui.
2. Developer insolvency
In rare cases, developers may go bankrupt mid-project, leaving buyers with an incomplete home.
3. Quality mismatches
Finished properties may not always match the 3D renders, especially in terms of materials, proportions or finishes.
4. Legal uncertainties
Thailand’s real estate laws can be complex, especially for foreign investors. Not every developer offers full legal protection or transparency.
How to Mitigate the Risks
✅ Work with a reputable developer
Check previous projects, request site visits, and verify their track record. A strong reputation is your first layer of protection.
✅ Request a building permit copy
Ensure that the construction has been legally approved by the Thai authorities.
✅ Ask for a clear payment schedule
Payments should be tied to construction progress, not arbitrary dates. Always withhold the final 5–10% until completion and inspection.
✅ Secure land ownership early
Ideally, you should become owner (or leaseholder) of the land plot after the first payment, as a guarantee.
✅ Have an independent lawyer review everything
From the land title to the sales agreement, an experienced Thai lawyer will spot any red flags before you sign.
✅ Demand detailed architectural plans & specs
Make sure what you see in the 3D render is clearly defined in contractual documents.
Guarantees You Should Expect
A professional developer will always offer:
- A construction warranty (typically 1–2 years)
- Clear legal structuring (Thai Company or long-term lease)
- Land ownership security (chanote title or lease agreement)
- Payment protections (staged payments linked to progress)
- Customization clauses (for off-plan buyers)
- Post-sale support (snag lists, maintenance, or even rental management)
Best Practices When Buying Off-Plan in Thailand
- Visit the location in person or via video tours, if possible.
- Review completed projects by the same developer.
- Clarify what’s included: furniture, appliances, landscaping, etc.
- Get everything in writing, including verbal promises.
- Work with local experts who understand both Thai and international expectations.
- Stay involved during the build: request updates, photos, or 3D Matterport scans for peace of mind.
Final Thoughts
Buying off-plan in Thailand can be incredibly rewarding — as long as you’re well-informed and well-advised. With the right protections in place and a reliable team at your side, you can secure a dream property at a competitive price, with customization options and excellent long-term returns.
Whether you’re looking to invest, relocate, or simply enjoy a piece of tropical paradise, off-plan real estate in Koh Samui is a strategic way to enter the Thai market with confidence.
