What is a Sale and Purchase Agreement (SPA) in Thailand? Buyer's Guide

A Sale and Purchase Agreement (SPA) in Thailand is the binding contract that sets out the parties, the property, the price, how and when you pay, when the developer or seller must deliver transfer, what happens if either side is late, and what specifications attach to the unit. For Phuket condos—off-plan or resale—your SPA is more important than any brochure because courts and the Land Department look to its clauses if disputes arise. You should expect seven to fourteen days of lawyer review before signing, longer for complex projects, and you should never rely on oral promises that do not appear in writing.

This guide walks through essential clauses, negotiation levers, and red flags.

1. Core elements every SPA should include

1. Parties — Legal names matching passports and corporate affidavits.
2. Property description — Unit number, floor area, building name, and land reference.
3. Purchase price — Base price plus VAT treatment if applicable.
4. Payment schedule — Milestones tied to construction or calendar dates with clear triggers.
5. Transfer date — Target handover and registration timeline.
6. Late delivery penalties — Per-day amounts or percentage of price.
7. Specifications — Materials, white goods, air-conditioning, and meter types.
8. Default and termination — What happens if buyer or seller breaches.
9. Dispute resolution — Arbitration or courts of jurisdiction.
10. Assignment — Whether you can sell your contract before completion.

2. Transfer tax allocation

Resale SPAs often specify who pays transfer fees, specific business tax, stamp duty, and withholding tax. Off-plan SPAs may shift some costs—verify against current Land Department practice.

3. What to negotiate

1. Penalty rate for developer delays — Many SPAs default to very small per-day percentages; negotiate meaningful sums capped at a sensible overall limit.
2. Force majeure scope — Epidemics, weather, and supplier delays should not become unlimited excuses. List examples and notice requirements.
3. Specification lock-in — Attach finish schedules by brand level or model numbers.
4. Variation rights — Developer should not freely substitute materials without consent or price adjustment.
5. Inspection period — Snag list windows before acceptance.

4. Red flag clauses

1. One-sided termination — Developer can cancel easily; buyer cannot.
2. No meaningful late delivery penalty — Token amounts only.
3. Vague specifications — “Premium” without definitions.
4. Broad force majeure — Covers any inconvenience.
5. Mandatory arbitration in foreign countries — Impractical for small claims.

5. Off-plan specifics

1. Construction milestones — Tie payments to engineer-certified stages.
2. Permit dependency — What happens if permits delay—pause payments or not?
3. Plan changes — Floor plan tolerances and view disclaimers—read carefully.

6. Resale specifics

1. Encumbrances — Mortgages discharged before or at transfer.
2. Tenant status — Vacant possession date and deposit handling.
3. Fixture list — What stays versus goes.

7. Review timeline

1. Receive draft SPA
2. Lawyer issues comment letter within agreed days
3. Negotiate revisions
4. Sign only when every promise you relied on is inside the contract

8. Supporting documents

Attach or reference:

1. Floor plans
2. Finish schedules
3. Parking allocation if separate
4. Management and pool rules if material

9. If the developer refuses reasonable edits

Walk away or reduce your upfront exposure. A contract that cannot tolerate fair risk-sharing signals future problems.

10. After signing

1. File executed copies securely
2. Calendar payment milestones
3. Monitor construction against timelines
4. Communicate delays in writing

11. Example: late penalty math

If purchase price is twenty million THB and the penalty is zero point zero one percent per day, that is two thousand THB per day—seventy thousand THB per month. Ask whether that truly compensates you for alternative housing costs if delays run six months. Many buyers seek higher rates or caps expressed as months of rent.

12. Language considerations

Bilingual SPAs are common. Ensure your lawyer confirms both languages match—do not assume the English page controls if Thai text prevails in court.

13. Appendices that should ride with the SPA

Parking slots, storage lockers, furniture packages, and club memberships should be exhibit schedules—not verbal assurances. If the sales gallery shows a sofa package, the SKU belongs in an appendix.

14. Change-order process mid-build

Off-plan buyers should insist on written change-order procedures and pricing for upgrades. Verbal upgrades via sales reps cause disputes at handover.

15. Handover inspection and snag lists

Define how many days you have to compile defects, who certifies completion, and whether withholding any portion of final payment is permitted—many SPAs omit buyer-friendly withholding mechanics; negotiate if you can.

16. Dispute escalation ladder

Good contracts define negotiation periods, mediation, and arbitration seats. Bad ones jump straight to opaque forums—know where you would litigate before you sign.

17. What happens if you assign the contract

Some investors flip off-plan contracts before completion. SPAs may restrict assignment or charge fees—read these clauses if exit liquidity matters to you.

18. Developer’s remedies if you default

Understand how quickly the developer can terminate and what percentage of payments you forfeit. Some contracts are harsh—lawyers negotiate softer thresholds where possible.

19. Governing law clarity

Even if you sign in English, know which jurisdiction’s courts or arbitration rules apply—this affects cost and speed of enforcement.

20. Exhibits and schedules numbering

Keep exhibit numbers consistent between English and Thai versions—lawyers catch mismatches that create ambiguity in enforcement.

21. Practical signing ceremony tips

Bring originals and copies, arrive early, and ensure witnesses meet Land Department expectations—chaotic signing days produce typos that linger for years.

22. Closing thought

The SPA is where marketing ends and law begins—give it the attention you would give the title deed itself.

Frequently Asked Questions

Is the reservation agreement the same as the SPA? +

No. The reservation is usually a short preliminary hold. The SPA is the full contract governing price, terms, and penalties.

Can I change the SPA after signing? +

Only by mutual addendum. Do not rely on verbal assurances post-signature.

What if my lawyer finds problems but I love the unit? +

Negotiate fixes or walk away. Emotional attachment is expensive in litigation.

Do I need a Thai lawyer for SPA review? +

Yes—Thai law governs enforcement. English fluency plus local licensing matters.

How long should review take? +

Often one to two weeks for standard condos; complex villas or lease structures can take longer.