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Due DIligence on Thai Property Purchase

FAQs Relating to Due Diligence on Thai Property Purchases

Property due diligence is the process of verifying all important facts and legal aspects before buying real estate in Thailand. It involves investigating ownership, land titles, encumbrances, permits, and any potential risks related to the property. This careful research helps investors, both Thai and foreign, make informed decisions, avoid legal or financial pitfalls, and protect their investment.

Below are the most common questions people ask about property due diligence in Thailand to help you understand the process clearly.

Why is due diligence important when buying property in Thailand?

Buying real estate often involves substantial money, and unfortunately, not all sellers or developers play by the rules. Without careful investigation, a buyer may end up with legal headaches, financial losses, or even the risk of losing the property entirely.

Doing due diligence helps you:

  • Verify that the seller has the legal authority to sell and that they actually own the property.
  • Make sure the land or building is free of liens, mortgages, or other burdens.
  • Avoid buying from developers with poor track records, illegal permits, or unresolved problems — especially for new developments, condos, or off-plan projects.
  • Be aware of all legal, tax, and contractual requirements, including those pertaining to zoning, permits, payment schedules, and potential fines, before signing.

What should you check when doing due diligence on a Thai property?

Before making a property purchase in Thailand, you should always consider the following important factors:

  • Verify Title Deed and Ownership Rights
  • Verify that the property is registered under a legitimate title and that the land description accurately matches the records at the relevant Land Department.

  • Check for Existing Encumbrances or Legal Liens
  • Review the land’s history to ensure there are no mortgages, liens, legal disputes, or co-owner claims attached to the title.

  • Identify the True Seller / Legal Authority to Sell
  • Make sure the party selling the property is legally entitled to do so. This is particularly crucial if the property is owned by several people or by a company.

  • Review Building Permits & Zoning Compliance (for house/villa/condo)
  • Examine building permits and zoning compliance. For properties that are developed or under construction, make sure that all building permits are in order and that environmental regulations or zoning laws are being followed.

  • Check Developer / Seller Background (for off-plan or development purchases)
  • Investigate the developer’s track record, financial stability, any past disputes or history of delayed / substandard projects.

  • Carefully Review the Sale & Purchase Agreement
  • Have a qualified Thai lawyer review the contract to ensure that all terms are fair and there are no hidden costs, unclear clauses or unfair obligations.

  • Clarify Roles, Timelines, Payments, Taxes and Fees
  • Make sure it’s clear who pays what, when deposits and balances are due, which taxes or transfer fees are applicable, and what happens I the event that the project or sale gets delayed or cancelled.

When should you conduct due diligence in Thailand?

You should start before you sign any binding contract or hand over money — ideally as early as the moment you think you’re ready to negotiate. Doing due diligence at the right time lets you go into the deal fully aware of all legal, financial, and property details.

What are the risks you could face if you skip careful property checks?

Skipping due diligence or depending only on documents provided by the seller can put you at serious risk:

  • Purchasing a property with an unclear or fraudulent title may result in invalid ownership, legal disputes, or claims from heirs or former owners.
  • Discovering hidden liens, mortgages, mortgages, or financial obligations you may be forced to assume.
  • Purchasing a property without proper building permits or in violation of zoning laws — leading to fines, forced demolition, or a decrease in the property's market value.
  • Becoming a victim of fraudulent developers, particularly in off-plan projects, who might construct substandard homes, put off projects indefinitely, or produce nothing at all.

How can you make due diligence easier and safer?

Because of the complexity of Thai property law — especially for foreigners — it’s highly advisable to engage a qualified Thai lawyer or a professional property‐due-diligence service. This will help you navigate legal terminology, verify documents at local Land Departments, and safeguard your interests long before you commit financially.

Your Smart Investment Starts Here

If you’re planning to buy real estate in Thailand, don’t skip this essential step. Let experienced legal professionals help you verify everything: title deeds, encumbrances, permits, developer credentials, and the fine print of any contract.

Contact us today to arrange a full due diligence check. Protect your investment, avoid costly mistakes, and secure your peace of mind before taking ownership.

Disclaimer: This information is intended as a general guide and does not replace personalized legal advice.

This guide was reviewed and verified in November 2025 by:
Picture of Supat Samunram (Barrister)
Supat Samunram (Barrister)

Licensed Attorney-At-Law | Licensed Notarial Services Attorney, The Lawyers Council of Thailand
Legal Counselor, Central Juvenile and Family Court