Buying a condo before it is built can win you the lowest price, a spread-out payment schedule and first pick of the best units — but you are buying a promise, and Thailand's escrow protection is weak. This guide walks the milestone payment structure, where your money actually goes, how to vet a developer's real track record, how to lock your foreign-freehold quota and time the FET paper trail, the contract clauses that matter, and the genuine risks of off-plan. Unbiased, never paid placement.
Off-plan buys you price, payment terms and unit choice — but you carry the build risk. You pay in stages (reservation → ~10–30% on signing → construction installments → ~70–80% balance at transfer), and because most developers don't use escrow, your money funds the build with little protection. Win by underwriting the developer, getting a lawyer-reviewed contract with penalty and refund clauses, and confirming your foreign-freehold quota in writing before you sign.
Editorial analysis compiled and periodically refreshed by BAANLYY’s research team — not a live data feed.
Analysis last reviewed 2026-07-05.
Off-plan, or pre-sale, means committing to a unit before it exists — sometimes before a single foundation is poured, when all you can see is a showroom, a scale model and a set of floor plans. You reserve a specific unit, sign a sale and purchase agreement (SPA), and pay in stages as the tower rises, settling the bulk at completion. Buyers accept that uncertainty for three concrete reasons: pre-launch pricing is usually the cheapest the project will ever be, the payments are spread across the construction period instead of landing as one lump sum, and you get first choice of layout, floor and view. The catch is simple — you're buying a promise, so the developer behind it and the contract you sign matter more than any render. If you're still weighing whether to own at all, start with our renting vs buying guide.
Off-plan is sold on a staged schedule. Exact splits vary by developer and project, but the shape is consistent:
Some new-builds sweeten the deal with interest-free post-handover plans that stretch payments past completion — effectively a form of developer financing. Get the full schedule in writing before you pay the reservation fee, and model the transfer-day costs with our purchase-cost calculator. Compare this against a finished-unit purchase via the step-by-step buying process.
This is the single most important thing to understand before you pay anything. Thailand has an Escrow Act, but using escrow is voluntary and most developers don't — your reservation fee and every installment typically go straight to the developer and fund the construction itself. There is usually no neutral third party holding your money until the building is finished. The practical consequence: if the project stalls, runs out of money, or the developer fails, recovering what you've paid can be slow, partial or impossible. You can ask whether escrow is offered and favour developers who use it, and you can have a lawyer write refund and protective clauses into the SPA — but plan on the basis that your money is exposed from the day it leaves your account. This is exactly why due diligence on the developer (next) does the heavy lifting.
Because escrow won't protect you, the developer's track record is your main safeguard. Run these checks before committing:
Foreigners can hold only up to 49% of the saleable floor area of a condo building as foreign freehold, allocated unit by unit. On an off-plan deal you must get your unit confirmed in writing as inside the foreign-freehold quota at the time you sign — never leave it to be sorted at completion, by which point the foreign allocation may already be full and you'd be pushed into leasehold or a Thai company structure. Equally, the money for the purchase has to enter Thailand in foreign currency and be documented on the Foreign Exchange Transaction (FET) form to register foreign title — and with off-plan that means planning the timing across multiple installments, not one transfer. Map the flow with your lawyer early. Detail in our foreign condo ownership & the 49% quota and FET form guides.
Off-plan protection lives in the SPA, not the brochure. Have a lawyer check these before you sign:
Off-plan can pay off, but price these risks honestly before you commit:
Manage all five with hard developer due diligence, a lawyer-reviewed contract, and a confirmed quota slot. Sense-check the bigger own-vs-rent maths with the rent-vs-buy calculator.
Model the full purchase cost and the rent-vs-buy maths, then explore residences across Bangkok and beyond.
General information only — not legal, tax or financial advice, and Thai property law, escrow practice, developer terms and the foreign-ownership quota change and vary by project. Payment splits, EIA and permit requirements, and refund rights described here are illustrative of common practice, not guarantees; confirm specifics for your project and engage a licensed Thai lawyer to run developer and title due diligence and review the contract before you pay any reservation fee. BAANLYY never takes paid placement or referral fees.
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.