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Reservation Agreement in Thailand: What You Sign and What You Risk

May 10, 2026

You found the perfect apartment in Phuket. The developer's sales manager says 'pay the deposit to lock in the price' and slides a two-page document across the table. This is the reservation agreement - the first legally binding step in buying property in Thailand. It is also the stage where most buyers make mistakes that can cost hundreds of thousands of baht.

A reservation agreement (sometimes called a booking agreement) is a preliminary contract between a buyer and a developer or seller that records the intention to purchase a specific property at an agreed price. The buyer pays a reservation fee (deposit), and the seller removes the unit from the market for a defined period. This document is not the final sale contract and does not transfer ownership.

In Thai law, reservation agreements are not governed by a dedicated statute. Their legal force is determined by the general provisions of the Civil and Commercial Code of Thailand (Sections 354-368, covering preliminary contracts and deposits). In practical terms, this means the exact wording of the document determines your rights - not any implied standard rules.

Quick Answer

  • Reservation deposits typically range from 50,000 to 200,000 THB for condominiums and 300,000 to 1,000,000 THB for villas
  • A typical reservation agreement is valid for 14 to 30 days, after which the buyer must sign the main Sale and Purchase Agreement (SPA) or forfeit the deposit
  • In approximately 80% of cases on Phuket's primary market, the deposit is non-refundable if the buyer withdraws without a qualifying reason
  • The reservation agreement does not confer ownership and is not registered with the Land Department
  • The document should specify the price, unit number, floor, area, completion date, and payment schedule
  • Without a signed reservation agreement, the developer has no obligation to hold the unit for even a single day

Scenarios and Options

Scenario 1: Off-Plan Condominium Purchase from a Developer

This is the most common situation. The developer presents a standard reservation agreement form. The deposit is typically 100,000 THB. After signing, the buyer has 14 to 30 days to conduct due diligence and sign the SPA. The first payment under the SPA is generally 20-30% of the purchase price, minus the deposit already paid.

One critical detail: the developer's standard form will almost always state that the deposit is retained in full if the buyer withdraws. However, if the developer changes material conditions - such as the floor plan, unit area, or total cost - the buyer generally has grounds to request a refund.

Scenario 2: Secondary Market Villa Purchase

Here, the reservation agreement is drafted on a case-by-case basis. Deposits are higher and timelines more flexible. An individual seller may agree to a refundable deposit under specific conditions - for example, if due diligence reveals encumbrances on the land. Always verify the Chanote (Nor Sor 4 Jor) title document before paying any deposit, not after.

Scenario 3: Rental Pool or Guaranteed-Return Project

In projects offering a guaranteed return, the reservation agreement may include additional obligations: a requirement to place the unit into a rental management pool, a fixed yield rate for the initial years, and penalties for early exit from the program. Read every clause carefully before signing.

Scenario 4: Foreign Buyer Purchasing Through a Thai Company

When property is acquired through a Thai Co., Ltd., the reservation agreement is signed by the company director. Confirm that the company is already registered and has the legal authority to enter into the transaction. Signing on behalf of a company that does not yet exist creates significant legal uncertainty.

ParameterOff-Plan CondoSecondary VillaRental Pool ProjectThai Company Purchase
Typical Deposit50,000 - 200,000 THB300,000 - 1,000,000 THB100,000 - 500,000 THB100,000 - 300,000 THB
Reservation Period14-30 days30-60 days14-30 days30-45 days
Deposit RefundabilityUsually non-refundableNegotiableUsually non-refundableNegotiable
Who Drafts the DocumentDeveloper (standard form)Seller's or buyer's lawyerDeveloper / operatorBuyer's lawyer
Primary RiskNon-refundable deposit lossLand encumbrancesHidden obligationsUnregistered company
Lawyer RequiredStrongly recommendedMandatoryMandatoryMandatory

Main Risks and Mistakes

1. Signing without legal review. An English-language reservation agreement does not take precedence over the Thai version in court. Where a document is bilingual, the Thai text governs. Always hire a lawyer to review the Thai version - not just the English translation.

2. Vague or absent refund conditions. The phrase 'non-refundable deposit' with no exceptions means you lose your money under any withdrawal scenario, even if the developer changes the project significantly. Insist on a clause specifying refund rights in the event of material changes by the seller.

3. No specific unit details. The agreement must identify the unit number, floor, area in square metres, building number, and parking allocation (if included). Without these details, a developer could offer you an entirely different unit.

4. Missing the SPA signing deadline. If the reservation agreement specifies a 14-day window and you have not signed the SPA by that date, the deposit is forfeited automatically. Verbal agreements to extend deadlines are not enforceable.

5. Incorrect wire transfer documentation. Foreign buyers purchasing a condominium in Thailand must transfer funds from abroad through a Thai bank and obtain a Foreign Exchange Transaction Form (FETF). Without this form, the Land Department may refuse to register ownership in a foreigner's name. The reservation deposit is the first payment in the chain - it must already be processed correctly.

6. Confusing a reservation agreement with an MOU. A Memorandum of Understanding (MOU) is a separate document sometimes used on the secondary market in place of a reservation agreement. An MOU typically contains more detail and may carry stronger legal weight. These two instruments are not interchangeable.

7. Relying on verbal promises. 'Furniture is included,' 'the rooftop pool will be ready at handover,' 'guaranteed 7% yield' - if it is not in writing, it does not exist. Every promise must be documented in the reservation agreement or in a signed addendum.

Pre-Signing Checklist:

  • Exact unit description (unit number, area, floor)
  • Full purchase price and payment schedule
  • Deposit amount and refund conditions
  • Reservation validity period
  • Penalty clauses for both parties
  • Payment currency (Thai baht or foreign currency)
  • Dispute resolution mechanism (arbitration or court)
  • Existence and review of the Thai-language version
  • Developer license (EIA approval for projects over 80 units)
  • Land title status (Chanote, Nor Sor 3 Gor)

FAQ

Can the reservation deposit be refunded? It depends on the contract terms. If the agreement states 'non-refundable,' a refund is only possible if the seller breaches their obligations. If the developer changes the project scope, delays the completion date, or fails to obtain required permits, you have grounds to pursue a refund through Thailand's Office of the Consumer Protection Board (OCPB).

What deposit amount is considered reasonable? For condominiums in Phuket, the standard range is 50,000 to 200,000 THB. If a developer requests more than 10% of the property value as a reservation fee, this warrants scrutiny and a direct explanation from the developer.

Which language governs the agreement? Major developers provide bilingual versions. In any dispute, a Thai court will rely on the Thai text. Always obtain a translated copy and a legal analysis of the Thai-language version before signing.

How does a reservation agreement differ from the SPA? A reservation agreement records the buyer's intention and removes the unit from sale. The Sale and Purchase Agreement (SPA) is the full purchase contract, covering all conditions, the payment schedule, warranties, penalties, and the property transfer process. The SPA is always signed after the reservation agreement.

Is a lawyer necessary for a reservation agreement? Yes. Legal review typically costs 10,000 to 30,000 THB - a fraction of the potential losses from overlooked clauses. A qualified Thai property lawyer will check for hidden conditions, verify the unit description, and confirm compliance with Thai law.

What if the developer refuses to change the standard form? This is common practice among large developers with pre-approved contract templates. However, you can request a signed addendum covering additional conditions. If the developer refuses even this, you must decide whether to accept the standard terms or look for a different project.

Can a reservation agreement be signed remotely? Yes. Many developers accept scanned signatures with originals sent by post. The deposit is transferred by bank wire. Ensure you hold an original document bearing the developer's signature and company seal before making any further payments.

Is a reservation agreement a mandatory step? Formally, no. It is possible to proceed directly to the SPA. In practice, however, approximately 95% of primary market transactions in Thailand begin with a reservation agreement. It is standard market procedure that protects both parties during the period required to prepare the full contract.

A reservation agreement is not a formality. It is a legally binding document that defines your rights and obligations before the main contract is signed. Treat it with the same seriousness as the transaction itself. Spending 10,000 to 30,000 THB on a lawyer now can prevent the loss of millions of baht later.

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