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Reservation Agreement in Thailand: 7 Clauses That Determine the Outcome of Your Deal
In early 2026, a buyer lost 200,000 baht with a single signature. He signed a reservation agreement on a Pattaya condominium without reading the non-refundable deposit clause. Two weeks later, he changed his mind. The developer kept the money - legally and permanently.
A reservation agreement is the first legally binding document in any Thai property transaction. It secures a specific unit for the buyer and takes it off the market for a defined period. It feels like a formality. In practice, it determines exactly how much money you can lose before you ever sign the main contract.
Under Thai law, the reservation agreement has no dedicated regulation in the Civil and Commercial Code. It operates as a standard civil contract under Sections 354-368 of the Code. This means the terms depend entirely on what is written in the document. There is no standard template. There are no mandatory clauses the law requires. All buyer protection comes from the wording itself.
Quick Answer
- A reservation agreement reserves a specific property for the buyer for a period typically ranging from 7 to 30 days
- The deposit usually ranges from 50,000 to 200,000 baht for condominiums and from 200,000 to 500,000 baht for villas
- In most cases the deposit is non-refundable if the buyer withdraws from the transaction
- The document does not transfer ownership and is not the main Sale and Purchase Agreement (SPA)
- Signing commits the buyer to execute the SPA within the specified timeframe - otherwise the deposit is forfeited
- In Phuket and Bangkok, premium developers often require a deposit of 1 to 3% of the property value at the reservation stage
What a Reservation Agreement Actually Contains
A standard Thai reservation agreement includes seven critical elements. Missing any one of them creates legal vulnerability.
1. Property identification. Unit number, floor, floor area, and land plot number for villas. Without a precise reference to the Chanote or the condominium registry number, the document loses its legal tie to the specific property.
2. Price and currency. A fixed price in Thai baht. If the developer quotes in US dollars or euros, the exchange rate must be locked in writing. A 5 to 7% baht fluctuation can translate into a materially higher purchase cost.
3. Deposit amount and refund conditions. This is where the main risk lives. The phrase 'non-refundable deposit' means the money is gone under any circumstances. The phrase 'refundable subject to conditions' offers a possibility, but those conditions may be effectively impossible to meet.
4. Validity period. The standard window is 14 to 30 days. During this time the buyer conducts due diligence and signs the SPA.
5. Penalty clauses. What happens if either party breaches the timeline. If the developer sells the unit to a third party during the reservation period, the agreement must specify the buyer's compensation.
6. Language of the document. The Thai version always takes precedence in court. The English translation is for reference. Any other language version carries no legal weight whatsoever.
7. Transition conditions to the SPA. A specific date by which both parties commit to signing the main contract. Without this clause the reservation can remain open-ended in ways that disadvantage the buyer.
Scenarios and Options
Scenario 1 - Off-Plan Condominium Purchase
A developer offers a reservation agreement with a 100,000 baht deposit and a 30-day reservation window. During that period the buyer must sign the SPA and make the first instalment payment (typically 20 to 30% of the purchase price). The deposit is credited toward that first payment.
The risk: the project is delayed by two years. Your funds are already in the developer's hands. Without a compensation clause for construction delays in the reservation agreement, recovering money is extremely difficult.
Scenario 2 - Ready-to-Transfer Villa on the Secondary Market in Phuket
A seller (individual or company) signs a reservation agreement with a 300,000 baht deposit. The buyer is given 14 days to verify the Chanote at the local Land Office. If the title proves to be encumbered, the deposit is returned.
The risk: the seller may fail to mention a mortgage registered against the land. Without independent title verification, the buyer learns about it only at the point of registration.
Scenario 3 - Foreign Buyer Purchasing Through a Thai Company
When the property is land or a villa on land, a foreign buyer often uses a Thai company structure. In this case the company director signs the reservation agreement. The agreement must reference the ultimate beneficiary and include conditions for corporate approval.
The risk: if the company is not yet registered at the point of signing and the agreement names the individual, transferring the reservation to the company later triggers additional costs and tax questions.
Comparison Table
| Parameter | Off-Plan Condo | Ready Condo | Villa With Land | Land Plot |
|---|---|---|---|---|
| Typical Deposit | 50,000 - 200,000 THB | 100,000 - 300,000 THB | 200,000 - 500,000 THB | 100,000 - 500,000 THB |
| Reservation Period | 14 - 30 days | 7 - 14 days | 14 - 30 days | 14 - 30 days |
| Deposit Refundability | Usually non-refundable | Depends on seller | Often refundable on title defect | Refundable on title defect |
| Primary Risk | Construction delay | Hidden defects | Land encumbrance | Zoning restrictions |
| Key Due Diligence | Developer licence, EIA approval | Inspection, service charge debts | Chanote, boundaries, permits | Chanote, permitted land use |
| Document Language | Thai plus English | Thai | Thai | Thai |
Main Risks and Mistakes
Mistake 1 - Signing without a lawyer. According to the Thai Bar Association, over 60% of real estate disputes involving foreign nationals originate from inadequate document review at the initial stage. A property lawyer costs 15,000 to 30,000 baht. Losing your deposit costs ten times that.
Mistake 2 - Overlooking refund wording. The phrases 'the deposit shall be forfeited' and 'the deposit may be forfeited' belong to two entirely different legal realities. The first is an unconditional loss. The second opens the door to a dispute.
Mistake 3 - Conducting due diligence after signing. Many buyers review the property only after paying the reservation deposit. The correct approach is to complete at least a basic title check before signing anything.
Mistake 4 - Relying on verbal assurances. 'We will refund you if anything goes wrong' has zero legal standing. Only the written text of the contract counts. Thai courts almost never accept oral agreements as evidence.
Mistake 5 - Ignoring the Thai version. A buyer reads the English translation, signs, and later discovers the Thai original contains an additional penalty clause. The court recognises the Thai version as authoritative.
Mistake 6 - Handing over cash without a receipt. On the secondary market, sellers sometimes accept deposits in cash. Without an official receipt bearing a signature and company seal, proving payment in court is extremely difficult.
FAQ
Are a reservation agreement and an SPA the same document? No. The reservation agreement is a preliminary booking document. The SPA (Sale and Purchase Agreement) is the main contract covering the full payment schedule, technical specifications, and transfer conditions.
Can a deposit paid under a reservation agreement be refunded? It depends on the wording. If the agreement states 'non-refundable', the answer is no. If it specifies refund conditions such as a title defect or a failed permit, the deposit is returned when those conditions occur.
What deposit size is considered normal? For condominiums in Phuket and Bangkok the standard range is 50,000 to 200,000 baht. For villas it is 200,000 to 500,000 baht. If a developer asks for more than 5% of the property value at the reservation stage, treat that as a warning sign.
Is a lawyer necessary to review a reservation agreement? Absolutely. It is an investment of 15,000 to 30,000 baht that can save millions. A lawyer will check the refund wording, penalty clauses, and the alignment between the Thai and English versions.
What if the developer backs out after signing? The buyer is entitled to a full refund of the deposit plus compensation. The compensation amount should be specified in the agreement. If it is not specified, only the deposit itself is recoverable.
Can a reservation be transferred to another buyer? Only if the agreement explicitly permits it. Most developers prohibit assignment at the reservation stage. At the SPA stage this becomes a separate and different question.
What language should the reservation agreement be in? Ideally bilingual - Thai and English. Remember that the Thai version always takes precedence in court. Any translation into another language is for your personal understanding only and carries no legal authority.
Does a reservation agreement obligate the buyer to purchase? Formally, no. You can walk away. The consequence is losing the deposit. Some agreements also impose additional penalties beyond the deposit. Read every clause before signing.
How long does the buyer have to sign the SPA after the reservation? The standard window is 7 to 30 days depending on the property type and the developer. This timeline is negotiable before you sign the reservation agreement.
Can a reservation agreement be signed remotely? Yes. Many developers accept scanned signed documents with originals to follow by courier. For maximum protection, consider having your signature notarised or using a power of attorney.
Pre-Signing Checklist
Before you sign, go through each of these points:
- Verify the developer's licence with Thailand's Ministry of Interior
- Request a Land Office extract referencing the Chanote number
- Confirm the property carries no mortgage or legal encumbrance
- Fix the price in baht with an explicit exchange rate conversion if originally quoted in foreign currency
- Include refund conditions triggered by title defects
- Specify the exact date for signing the SPA
- Compare the Thai and English versions clause by clause
- Obtain a bank transfer confirmation or official receipt for the deposit payment
A reservation agreement in Thailand is not a formality. It is the first line of defence for your investment. One unread clause can cost hundreds of thousands of baht. One qualified lawyer can prevent exactly that.
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