How to Buy and Sell a Condo? A Guide to Title Transfer and Key Laws for Both Thais and Foreigners

Condominium ownership transfer is a legal process that fully changes the ownership rights of a condominium unit from the seller to the buyer. The transfer must be registered in the presence of a competent officer at the Land Office. If the transfer is not carried out correctly according to the required procedure, the buyer will not yet be considered the legal owner of the condominium, even if the full payment has been made.

From a legal perspective, the ownership transfer is the most important step in a real estate transaction because it serves as official evidence confirming property rights. Completing the process correctly in accordance with the condo transfer procedure and using complete condominium ownership transfer documents will help prevent ownership disputes, competing claims, or legal issues in the future.

Before proceeding with the condominium ownership transfer, both the buyer and the seller should thoroughly verify all key information to prevent legal risks and potential issues later on. Conducting checks in advance helps ensure the condominium transfer process runs smoothly and without delays on the actual transfer date.

Verify unit ownership

The first thing to check is the unit’s ownership by reviewing the last line on the back page of the condominium title deed to confirm that the owner’s name matches the seller’s. A condominium sale can be carried out only if the seller is the lawful owner.

In addition, you should check whether the condominium title deed is subject to a mortgage, attachment, or any third-party rights. If such encumbrances remain, they must be released before or on the day of the condominium ownership transfer; otherwise, the transfer may not be validly completed.

Check the unit ownership ratio (total ownership ratio)

The unit ownership ratio is the proportion of ownership rights in the condominium’s common property, calculated based on the unit area compared with the project’s total area. This ratio is stated in the condominium title deed and condominium documents.

The ownership ratio directly affects the common area fees payable, as well as voting rights at the co-owners’ meeting. Knowing the ownership ratio in advance helps buyers accurately assess ongoing costs and ownership rights.

Check outstanding debts and obligations

Another important point that should not be overlooked is checking outstanding debts and obligations related to the unit, including:

• Bank or financial institution debt

• Common area fees outstanding with the condominium juristic person

• Land and Building Tax that may be outstanding

• Utility bills such as electricity, water, or internet

If these debts are not properly settled, the ownership transfer cannot be completed and they may become the buyer’s responsibility after the condominium ownership transfer. Therefore, verifying and obtaining supporting evidence before signing the sale and purchase agreement is essential.

Preparing condominium transfer documents in full is essential to the condominium ownership transfer. If documents are incomplete or information is incorrect, the process may be delayed or the transfer may not be completed on the appointment date. Therefore, both the buyer and the seller should carefully review the condominium ownership transfer documents according to each party’s responsibilities.

Seller-side condominium ownership transfer documents

The seller is responsible for preparing key documents demonstrating ownership and readiness to transfer title, including:

• Condominium unit title deed (original), which must not be damaged or altered

• House registration (Tabien Baan) for the unit to be transferred

• National ID card and house registration (Tabien Baan) of the seller for identity verification

• Passport and the page showing the Thailand entry stamp (if the seller is a foreigner)

• Debt-free letter from the condominium juristic person confirming there are no outstanding common area fees

• Ownership quota confirmation letter for a sale to a foreigner issued by the condominium juristic person

• Release of attachment letter in cases where there are outstanding land and building tax payments or a prior attachment order

• Consent letter from the mortgagee if the unit is still mortgaged with a financial institution

• Power of Attorney  If the seller cannot attend in person, they may authorize the buyer or another person. If the Power of Attorney is executed overseas, it should be notarized by an embassy, consulate, or law office as a Notary Public (NOTARY PUBLIC).

• Funds to pay the transfer fee and taxes in the form of cash, a bank-app transfer, or a cashier’s cheque payable to the Ministry of Finance

These documents are key components of the condominium ownership transfer documents that the Land Office will review before proceeding with the transfer.

Buyer-side condominium transfer documents

The buyer should prepare documents to confirm identity and legal status, including:

• National ID card and house registration (Tabien Baan) of the buyer

• A valid passport (Passport) and the page showing the Thailand entry stamp (if the buyer is a foreigner)

• Bank certificate for inward remittance or FET (Foreign Exchange Transaction Form), confirming that the funds used to purchase the condominium came from overseas (if the buyer is a foreigner)

• Power of Attorney  If the seller cannot attend in person, they may authorize the buyer or another person. If the Power of Attorney is executed overseas, it should be notarized by an embassy, consulate, or law office as a Notary Public (NOTARY PUBLIC).

• Marriage certificate or divorce certificate (if any) for consideration of property rights

• Proof of payment such as a transfer slip, cashier’s cheque, or documents from a financial institution

The condominium ownership transfer must be carried out in the presence of a Land Office officer at the Land Office in the district where the unit is located. Understanding the condo transfer process step by step will help ensure a smooth transaction, reduce processing time, and avoid errors that could require document corrections later.

Step 1: Prepare all required documents

Before the transfer date, the buyer and seller should check that all parties’ condo transfer documents are complete and accurate—especially the condominium title deed, the debt-free letter, and identification documents.

In addition, you should schedule the condominium ownership transfer in advance and clearly agree on expenses, taxes, and fees so that the process on the transfer date can be completed quickly.

Step 2: Proceed with the condominium ownership transfer

On the transfer date, the buyer and seller (or their authorized representatives) must submit an application for the condominium ownership transfer at the Land Office and submit the documents to the officer.

The officer will verify the information and documents, including the unit’s ownership, any encumbrances, and the accuracy of the paperwork. If everything is in order, the process will proceed to the calculation of fees and taxes.

Step 3: Pay fees and taxes

Once the documents are complete and correct, the buyer and seller must pay the costs related to the condo transfer process which generally include:

• Ownership transfer fee at the rate prescribed by law

• Specific Business Tax or stamp duty (depending on holding conditions and period)

• Withholding income tax, which is often borne by the seller

These expenses should be agreed in advance between the contracting parties to avoid disputes on the actual transfer date.

Step 4: Receive the title deed after the transfer is completed

After the fees and taxes have been paid, the Land Office will proceed to officially change the name of the owner on the condominium title deed from the seller to the buyer.

For a condominium ownership transfer, it is not always necessary for the buyer or the seller to appear in person. The law allows you to authorize another person to act on your behalf, but the documents must be prepared correctly in the format prescribed by the Land Office. If prepared incorrectly, you may be unable to complete the condo transfer process on the scheduled appointment date.

What is a Power of Attorney, and when is it used?

A Power of Attorney is a document by which the rights holder (the buyer or the seller) authorizes another person to act on their behalf in the condominium ownership transfer process. It is used when you cannot proceed in person, such as due to other commitments, being in another province, or residing overseas.

However, granting a power of attorney carries legal risks. If an inappropriate attorney-in-fact is chosen or the scope of authority is not clearly specified, issues may arise. Therefore, the principal should carefully review the details in the Power of Attorney and grant authority only to the extent necessary.

Power of Attorney executed in Thailand

If the Power of Attorney is executed in Thailand, it must follow the format prescribed by the Land Office, clearly stating the details of the principal, the attorney-in-fact, and the scope of authority for the condominium ownership transfer.

In addition, the Power of Attorney must have the required stamp duty affixed by law, and the principal must sign in the presence of witnesses correctly. If any step is missing, the condo transfer documents may be incomplete and cannot be used for the transaction.

Power of Attorney executed overseas

If the principal is overseas, preparing a Power of Attorney for a condominium ownership transfer involves additional steps. The document must be legalized by the Royal Thai Embassy or Thai Consulate, or notarized by a NOTARY PUBLIC through a law office in that country.

Granting a power of attorney for condominium ownership transfer can be done in several ways, depending on the availability of the buyer and the seller on the transfer date. Choosing an appropriate and legally compliant method will help ensure that thecondominium transfer process runs smoothly and reduces potential legal risks that may arise later.

1. The buyer and the seller handle it themselves

If the buyer and the seller can go in person to complete the condominium ownership transfer themselves, this is considered the standard case and is the format most recommended by the Land Office.

The advantages are speed and a high level of security, as both parties can review the condominium transfer documents, make payment, and sign in front of the officer immediately, reducing the risk of document errors or inconsistent interpretations of the granted authority.

2. The buyer and the seller grant power of attorney to the same person

In some cases, the buyer and the seller may choose to grant power of attorney to the same person—such as an agent or a lawyer—to act on behalf of both parties, which can be done if it meets the conditions accepted by the Land Office.

However, this arrangement involves legal precautions, especially regarding conflicts of interest. Therefore, the scope of authority in the power of attorney should be clearly specified, and a highly trustworthy attorney-in-fact should be selected.

3. The buyer or the seller grants power of attorney to another person

Another common case is where the buyer or the seller grants power of attorney to another person—such as a real estate agent, a lawyer, or a relative—to act on their behalf.

This arrangement is convenient when a party cannot travel to the Land Office, but you should ensure that the power of attorney and the condominium ownership transfer documents are prepared correctly and in full.

4. The buyer grants power of attorney to the seller

Where the buyer grants power of attorney to the seller to carry out the condominium ownership transfer on the buyer’s behalf, this is legally possible, but extra caution is required.

A key risk to be aware of is that the seller will hold the authority to act on the buyer’s behalf in all respects. Therefore, the scope of authority should be clearly defined, and payment and receipt of the title deed should be handled under strict conditions.

5. The seller grants power of attorney to the buyer

Conversely, where the seller grants power of attorney to the buyer, this is often seen in urgent situations or when the seller is unable to travel. This arrangement can be carried out, but additional documents will be required, such as a letter of consent and the seller’s identity verification documents, so that the Land Office can verify authenticity and prevent impersonation or fraudulent claims.

After completing the condominium ownership transfer, there are still important steps that buyers should take immediately to ensure that both occupancy and ownership are fully in order. If these steps are overlooked, issues may arise later regarding utility usage or unclear expense liabilities.

Transfer of Electricity Meter and Utilities

One step that should be completed as soon as possible after the condo transfer is changing the utility account holder’s name from the previous owner to the buyer, to prevent issues with outstanding charges.

• Electricity Contact the electricity authority to transfer the electricity meter account name, using the title deed or documents confirming the condominium ownership transfer

• Tap water Change the water account holder’s name with the local waterworks authority, ensuring any previous outstanding balance is settled.

• Internet Cancel or transfer the service contract from the previous owner, and subscribe to a new plan as needed.

These actions will help ensure uninterrupted service and prevent confusion regarding charges.

Notify the Condominium Juristic Person

Another important step after the condo transfer process is to notify the condominium juristic person of the change of details so that building management can be handled correctly.

• Change the unit owner’s name in the juristic person’s system to confirm co-ownership rights.

• Update common area fees and receive notifications of various future charges.

Providing complete notification to the juristic person will help buyers fully exercise their rights as co-owners and avoid incorrect billing issues.

A smooth and successful condo transaction doesn’t depend solely on agreeing on the price—it also requires a clear understanding of the documents required for condo ownership transfer and the related legal procedures—especially the condo title transfer documents for both the buyer and the seller, which are essential to properly register the transfer of ownership in accordance with the law.

From a process standpoint, knowing the steps for a condo ownership transfer —from preparing documents, submitting the application at the Land Office, paying fees and taxes, to checking the title deed after the transfer—helps reduce the risk of errors and ensures the condo ownership transfer is completed properly.

In addition, conducting advance checks—such as the unit’s ownership status, encumbrances, common area fees, as well as using a power of attorney when you cannot proceed in person—are all important factors that should not be overlooked. If handled incorrectly, they may have long-term legal and financial consequences.

If you’re looking to buy or sell a condo, or need complete real estate information and guidance, you can search listings, post condo sale listings, or explore more educational articles at 9asset.com, a real estate platform that brings every step of buying and selling together in one place—so you can buy and sell condos with confidence and safety at every stage.