Service guide
What property due diligence in Thailand covers: the title search, seller and condo-quota checks, the written report, and how law firms scope and price it.
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Property due diligence in Thailand is the set of checks a law firm runs on a property and its seller before you pay anything that is hard to get back. The core of it is a title search at the land office that holds the property's records, backed by checks on the seller, the building, and, for a condo, the building's foreign-ownership position.
The reason the search works is that the things that can hurt a buyer are mostly registered. A mortgage is registered against the deed at the Land Office, a lease is registered there too, and ownership itself only changes by registration. Pull the record and you see who really owns the property and what claims sit on it.
This page covers the engagement: what the search covers, what the written report contains, how light and full scopes differ, and how firms charge. For the full checklist a buyer can work through item by item, see the guide to property due diligence.
Deed type and title history
What kind of title document the property has, and the chain of transfers behind it. Weak or irregular history is the first thing the report flags.
Encumbrances on the deed
Registered mortgages, leases, servitudes, and other rights that survive a sale. These sit on the record at the Land Office, which is why the search finds them.
Seller identity and authority
Whether the seller is the registered owner, and, for a company seller, whether the person signing has authority to sell. Spousal consent is checked where it applies.
Legal access to the land
Whether the plot actually touches a public road or has a registered right of way. Land without legal access is worth far less than its price suggests.
Building permits and land-use limits
Whether the structure was permitted, and whether zoning or environmental rules restrict what can be built or operated there.
Condo quota and common fees
For a condo: the building's current balance inside the 49% foreign quota, and whether the unit carries unpaid common fees. A unit that would breach the quota cannot be registered as foreign freehold.
Warning: What skipping the checks costs
The problems due diligence exists to catch surface at the worst possible moment: at the Land Office counter, after the deposit is paid. A seller who is not the registered owner, a mortgage nobody mentioned, a condo already past its foreign quota, or land held through Thai shareholders fronting for a foreign buyer. The Department of Lands maintains standing measures against nominee land holding, and registrars examine where Thai buyers' funds come from, so a structure built to disguise foreign control is a finding to walk away from, not a detail. The fee for the checking is small against a deposit that cannot be recovered.
Your options
A first shortlist from 3 firms on Justenda. Compare them, then message one or several at once.
Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
Firms scope the work to the deal. A light scope is typically the title search plus an encumbrance and ownership check: enough for a new condo unit bought from a large developer with a clean record. A full scope adds the seller and company checks, permits and zoning, access, a site visit, and review of the contract the diligence feeds into. Between the two sits most real work, and a good firm tells you which scope the property actually needs rather than selling the biggest one.
Condo and land purchases need different depth. A condo purchase concentrates on the unit's title, the building's foreign-quota balance, unpaid common fees, and the remittance evidence a foreign buyer will need, since the Land Office wants proof the purchase money came from abroad in foreign currency. Land, or a house on land, is the heavier job: deed history, access, boundaries, permits, and who really controls the land all matter more, because foreigners cannot own land as a general rule and every land structure deserves scrutiny.
On price, most firms offer due diligence either as a fixed fee for a defined scope or on hourly rates when the property is complicated. Neither is set by law and there is no official fee schedule for the work, so the practical move is to compare firms on scope and price before engaging one. What matters is that the quote states what is checked and what the report will say.
Scope and quote
You describe the property and the deal; the firm proposes a scope and a fixed fee or an hourly estimate. Agree what is in and out before work starts.
Documents in
The firm collects what you have: the deed copy, the draft contract, the seller's details, and for a condo the unit and building information.
Searches and checks
The title search at the land office that holds the record, company and seller checks, and the building, access, and quota checks the scope calls for.
The written report
A due diligence report states what was checked, what was found, and what each finding means for the purchase: proceed, renegotiate, fix a defect first, or walk away. For a condo it covers the remittance evidence you will need at transfer.
Decision and next steps
You decide with the findings in hand. If the deal proceeds, the same firm usually moves into contract review and transfer work; the buying property guide walks through that journey from the buyer's side.
Registration itself is quick: the official standard for a transfer that needs no proclamation is 2 hours at the Land Office, and ownership changes the same day. That speed is exactly why the checking happens first. Once the transfer is registered, the problems the search would have caught belong to you.
As a rule of thumb, the case for full diligence grows with distance from a clean, simple deal: resale rather than new, land rather than condo, a private seller rather than an established developer, or any structure whose main feature is getting around the foreign ownership rules. Due diligence is one stage of the wider legal work in a purchase; our property purchase services page covers the rest, from contract review to transfer day, and a property lawyer can run both as one engagement.
This page is general information, not legal advice. Records, rules and procedures change; for a specific property, speak with a qualified professional.
Also listed
Every one of these is verified on Justenda and can take on property due diligence work in Thailand.
Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
Next step
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Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
Experts assisting clients in conducting their businesses and protecting their rights and investments in Thailand across a wide range of legal matters.
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