Thailand Sale and Purchase Agreement Guide: What Buyers Must Know

Quick answer: The Sale and Purchase Agreement (SPA) is the binding contract between you and the seller or developer. It defines price, payment schedule, handover window, specifications, warranties, and cancellation rights, not the marketing gallery. Foreign buyers should allow 7-14 days for independent legal review before any payment becomes non-refundable. If a promise is not in the SPA or an attached specification schedule, it is not enforceable.

Why does the SPA matter more than marketing brochures?

Marketing describes lifestyle; the SPA describes legal obligations and remedies if the seller fails. Banks and future purchasers examine your SPA at exit, sloppy language creates resale friction years later.

Common buyer mistake: signing a reservation, wiring a deposit, then discovering the SPA caps delay penalties at 0.01% per day with no termination right after 18 months of slippage. Prevention is cheaper than litigation.

For off-plan context, read the pillar off-plan property Phuket guide and escrow and trust accounts guide, escrow is rare; the SPA is your shield.

What essential clauses should every SPA contain?

A strong SPA identifies the property precisely, ties money to milestones, and defines delay and defect remedies.

Property description

The SPA must identify:

• Project name, tower, unit number, floor, approximate area in square metres
• Parking and storage allocations
• Condominium ownership percentage if applicable

Vague “approximate area subject to survey” language needs a remedy if delivered area differs materially, price adjustment or termination right.

Purchase price and payment schedule

Total price in Thai Baht, confirm whether VAT is included.

Payment schedule with dates or construction milestones. Off-plan installments should tie to objective progress, foundation, structure, enclosure, not arbitrary calendar dates with no site linkage.

Payment type	Best practice
Reservation	Refundable or short cooling-off where possible
Staged installments	Linked to construction photos + engineer sign-off
Final payment	After handover and snagging, or retention held

Handover date and delay remedies

Fixed handover window or completion date with:

• Delay penalty, daily rate (templates often show 0.01%, negotiate upward or add cancellation after 6-12 months overrun)
• Force majeure, specific events with notice requirements, not open-ended delay excuses

Specification schedule

Attached schedule listing flooring, kitchen appliances, bathroom tier, windows, and AC capacity. Without it, “luxury finish” is meaningless marketing.

Common area and juristic person

For condos, confirm:

• Unit joins a registered juristic person
• Buyer obligations for CAM and sinking fund
• Voting rights in condominium governance

Warranties and defects

Define defect liability, typically 12-24 months for workmanship in new builds, and snagging process before final payment release.

Cancellation rights

Understand when either party may cancel. Developer-friendly SPAs sometimes allow broad developer cancellation while restricting buyer exit. Symmetry matters.

What should you negotiate before signing?

Delay penalties, specifications, payment linkage, and foreign quota confirmation are the highest-leverage negotiation points for most buyers.

Topic	Negotiation goal
Delay penalty	Higher daily rate or termination + refund after extended delay
Specification lock-in	Signed schedule; substitutions equal or better only
Defect warranty	Clear period + snagging before final installment
Payment linkage	Final 5-10% held until defects cleared
Foreign quota	Refund right if registration impossible for your unit

Never sign under “today only” promotion pressure. Serious developers allow legal review time.

What are red flags in developer SPAs?

Multiple red flags together signal contracting culture, not just document quality.

Red flag	Why it matters
Vague force majeure	Unlimited delay risk
No firm handover window	No planning certainty
Unilateral material substitution	Downgrade risk
No meaningful delay penalty	Weak completion incentive
Broad developer termination rights	Asymmetric risk
Buyer late-payment penalties dwarf developer penalties	Imbalanced contract
Missing foreign quota confirmation	Title risk for foreigners
Payments to agent accounts	Never acceptable

If several appear, pause, compare alternatives in best areas to buy property in Phuket.

Insider tip: Cross-check SPA handover date against site reality on an unannounced weekday visit. Contracts promising Q4 delivery with empty cranes are telling you something.

What happens during a 7-14 day lawyer review?

Your lawyer compares SPA terms against Land Department records, marketing promises, and your nationality-specific requirements.

Typical review steps:

1. Compare SPA to title search and developer licenses
2. Flag ambiguous clauses and propose revisions
3. Align payment schedule with your bank’s international transfer timing
4. Confirm transfer tax and fee allocation between parties
5. Verify foreign quota language for condo purchases
6. Review specification schedule attachments for completeness

Independent lawyer vs developer counsel: the developer’s lawyer drafts to protect the developer. Your lawyer works for you, standard practice, not an insult. See do I need a lawyer to buy property in Thailand.

Who needs extra SPA scrutiny?

Off-plan buyers, foreign freehold purchasers, and assignment flippers carry the highest SPA risk exposure.

Buyer profile	SPA focus
Foreign condo buyer	Quota confirmation + FET payment alignment
Off-plan investor	Milestone payments + delay termination
Resale purchaser	Encumbrance discharge + existing defect disclosure
Assignment buyer	Developer consent fees + remaining milestone schedule

Pair SPA review with Phuket property due diligence checklist and buying property in Phuket guide.

What if the SPA is only in Thai?

Request an English translation for understanding, but confirm which language is legally controlling. Many contracts specify Thai as governing language.

You should have bilingual counsel explain obligations before signing, especially penalty clauses, force majeure, and payment triggers.

Strategic checklist before you sign

1. Reservation terms reviewed: know when money becomes non-refundable
2. Specification schedule attached and signed
3. Handover date + delay remedies acceptable
4. Foreign quota clause present (if applicable)
5. Payment milestones match visible construction (off-plan)
6. Independent lawyer sign-off in writing
7. No payments to personal agent accounts

How does an off-plan SPA differ from a resale SPA?

Off-plan SPAs stretch over years with milestone payments; resale SPAs compress into weeks with immediate transfer focus, different risk profiles require different scrutiny.

Element	Off-plan SPA	Resale SPA
Timeline	24-36 months to handover	4-8 weeks to transfer
Payment	Staged installments	Deposit + balance at transfer
Specifications	Developer finish schedule	As-is with defect disclosure
Delay risk	High, construction slippage	Low, unit exists
Quota clause	Critical for foreigners	Still critical at registration
Escrow	Rare; see escrow guide	N/A, full price at closing

Resale buyers should confirm encumbrance discharge and existing defect disclosure in the SPA. Off-plan buyers should confirm milestone definitions and termination rights if handover slips beyond an agreed window.

What does a sample off-plan payment schedule look like?

Illustrative only, actual SPAs vary by developer. Use this to sanity-check whether your schedule front-loads cash without progress.

Milestone	Typical %	Buyer question
Reservation / contract signing	10-20%	Refundable window?
Foundation complete	10-15%	Site photo + engineer sign-off?
Structure complete	15-20%	Visible floors match tranche?
Enclosure / windows	15-20%	Weatherproof stage verified?
Handover	20-30%	Snagging before final tranche?

If early tranches exceed 40% before structure is visible, negotiate slower pacing or walk. Heavy front-loading is a distress signal when paired with discounts and pressure signing.

What transfer fee and tax allocation should the SPA specify?

Ambiguity at transfer creates last-minute friction at the Land Department, allocate fees in the SPA, not at the counter.

Fee	Typical negotiation
Transfer fee (2%)	Split 50/50 buyer/seller common
Specific Business Tax / Stamp Duty	Usually seller obligation
Withholding tax	Seller, buyer may withhold at source
Lawyer	Each party own counsel

Foreign buyers should align SPA payment dates with international wire timing, banks need 3-5 business days; missing a milestone date triggers penalty clauses even when the delay is operational, not intentional.

Which buyer scenarios need customised SPA focus?

Profile	Priority clauses
Foreign first-time buyer	Quota refund + FET payment alignment
Off-plan flipper	Assignment rights + developer consent fees
Income investor	Hotel management attachment + rental permissions
Lifestyle buyer	Specification schedule + defect warranty length
Company purchaser	Share structure + beneficial owner disclosure

Scenario, British buyer, $220K off-plan Bang Tao: Lawyer negotiates quota confirmation, delay termination after 9 months slippage, and snagging holdback on final 10%. Without those three, the buyer carries developer-delay risk without economic remedy.

Scenario, German resale buyer, $185K completed Kamala: SPA focuses on encumbrance clearance, CAM fee arrears, and existing tenant lease assignment, not construction milestones.

What happens after you sign a weak SPA?

Remedies are expensive and uncertain, litigation in Thailand is slow; prevention remains the rational strategy.

Weak SPA outcomes buyers report:

• Stuck paying installments while site is idle, limited penalty recovery
• Material downgrades with no equivalence clause, no damages formula
• Handover delay over 18 months, deposit locked without termination right
• Foreign registration failure, no refund if reservation was silent on quota

If you already signed, lawyer review shifts to damage mitigation, documenting delay, gathering site evidence, and negotiating amendment or assignment exit. Costs often exceed what pre-signing negotiation would have required.

Pair every SPA review with title search Thailand explained and Phuket property due diligence checklist.

How do specification schedules attach to the SPA?

Finishes live in an exhibit; if the exhibit is missing, the SPA is incomplete. Treat kitchen brands, flooring grades, window types, and AC capacity as contract terms, not showroom conversation.

Specification item	Why buyers care
Flooring material and brand tier	Downgrade risk at handover
Kitchen appliances	Replacement cost if omitted
Bathroom sanitaryware	Visible quality signal to tenants
Window glazing	Noise and heat, resale factor
Air conditioning BTU	Comfort and electricity bills

Require developer initials on the schedule or a signed exhibit page. Photograph showroom samples and reference them in the schedule where possible, “equivalent to unit A display kitchen” beats vague “premium European.”

What force majeure language is acceptable?

Specific events with notice duties, not open-ended delay excuses. Acceptable force majeure lists natural disasters, government stop-orders, and documented supply chain failures with proof requirements. Unacceptable language: “any event beyond developer control” without caps or termination rights after 12+ months cumulative delay.

Lawyers often propose:

• 30-day notice obligation with evidence
• Cap on cumulative force majeure extension
• Buyer termination right after agreed threshold
• Continued delay penalties except during certified events

How do assignment and resale clauses affect exit?

Off-plan investors who plan to flip at handover need assignment language on day one, not at month 30 when the market moves.

Clause	Strong	Weak
Assignment permitted	With developer consent, reasonable fee cap	Prohibited entirely
Assignment fee	Capped at 1-2%	Uncapped discretionary
Quota recycling	Confirmed for assignee foreign buyer	Silent
SPA transfer	Entire agreement assignable	Personal to original buyer

Read off-plan assignment Phuket property alongside SPA assignment sections.

What is a pre-signing SPA review meeting agenda?

1. Lawyer presents red-line list to you: not only to developer
2. Compare payment schedule to site photos or timeline
3. Confirm quota / title search status verbally and in writing
4. Agree which amendments are deal-breakers vs nice-to-have
5. Set deadline for developer response: avoid open-ended negotiation
6. Do not wire non-refundable tranche until signed SPA returned

Insider tip: Email the developer your lawyer’s amendment list, paper trail beats verbal “they said OK on the phone” when handover slips.

Summary: SPA discipline for foreign buyers

The SPA is where Phuket purchases are won or lost, quota, milestones, specifications, and delay remedies live in black and white. Never wire a non-refundable tranche until your lawyer confirms the signed SPA matches the title search, quota path, and payment calendar you approved in writing. Reservation hype expires in days; SPA obligations last for years.

How do co-buyers and spouses sign SPAs?

All registered future owners should appear on the SPA and attend transfer unless your lawyer structures otherwise. Spouses buying jointly need aligned signing authority; company purchases need director resolutions and beneficial-owner disclosure. Misaligned signatories delay Land Department registration and frustrate resale buyers who expect clean title chains.

Structure	SPA note
Husband and wife joint	Both names on SPA and transfer
Company buyer	Director authority + shareholder approval
Friend co-investment	Lawyer structure, not informal split

Unclear co-ownership is a top resale friction theme, fix it at SPA stage, not at exit. Your future self, and your buyer’s lawyer, will thank you for clean signatures on day one.

MORE Group coordinates buyer-side due diligence, we do not draft developer SPAs.

Frequently Asked Questions

How long should I allow for SPA review in Thailand? +

Plan for 7-14 days for thorough review and negotiation. Rush reviews miss cross-references between the SPA and specification schedules. Same-day signing pressure is a warning sign.

Can I negotiate the SPA with a Thai developer? +

Yes, especially on delay penalties, specification schedules, and payment milestones. Developers vary, some accept reasonable amendments, others refuse. Your lawyer advises what is realistic.

What if the SPA is only in Thai? +

Request an English version for understanding, but confirm which language governs legally. Many contracts specify Thai as controlling. Use bilingual counsel before signing.

Is the reservation agreement the same as the SPA? +

No. The reservation is typically a short preliminary agreement to hold the unit. The SPA is the full contract governing price, payment, and remedies. Review the SPA before non-refundable payments.

What happens if I sign a bad SPA? +

You may be locked into unfavorable payment terms, weak delay remedies, or unclear specifications. Remedies after signing are limited and expensive. Prevention through legal review is far cheaper than litigation.

Does the SPA replace a title deed check? +

No. The SPA governs your contract with the seller; Land Department searches govern ownership and encumbrances. Both are mandatory, see title search guidance in our due diligence checklist.