How to Check Property Ownership in Thailand

Last updated: 3 Jul 2026

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How to Check Property Ownership in Thailand

Concise Guide to Checking Thailand Title Deeds Online Before Buying

Using the digital tools provided by the Royal Thai Department of Lands is the ultimate preliminary step (pre-screen) before committing funds to a property transaction. However, note that an online check is a fast initial filter, it is never a substitute for an official Land Office registry inspection or a lawyer-led due diligence process.

Quick 3-Minute Pre-Screen: 5 Critical Checkpoints

Before visiting the Land Office or instructing a lawyer, request a high-resolution scan of both the front and back pages of the title deed from the seller, then verify these 5 points:

The Seller’s Name: The name of the current registered owner on the Thai-script deed must match the seller’s identification documents exactly. A mismatch, a missing name, or a company name instead of an individual is an immediate red flag.
Title Deed Type: Check the header and emblem. A true freehold title deed, Chanote (Nor Sor 4 Jor / NS4J), features a distinctive red Garuda emblem. Other title types (like Nor Sor 3) offer lower legal certainty and marketability.
Registered Encumbrances: The reverse side (Registration Index) logs mortgages, leases, servitudes, or rights of way. Never review just the front page; concealing the back page is a common deceptive tactic.
Physical Boundaries vs. Map: Use the online mapping tool to overlay the deed’s survey coordinates onto satellite imagery. If the digital boundaries do not align with the actual property fences or walls you inspected on-site, pause the transaction.
Mortgages or Court Seizures: Active bank mortgages or court-ordered attachments will be explicitly stamped on the back page. A property under a court seizure order is legally untransferable until resolved.

Official Online Portals and Their Limitations

The Department of Lands (กรมที่ดิน, dol.go.th) provides two main public digital services, each with strict data access boundaries:

1. Land Information Search & Valuation (dol.go.th / e-LandsValuation)
By entering the title deed number, land survey page number, province, district, and sub-district, you can retrieve basic data and the official government-appraised land value per square wah.

Critical Limitation: For public privacy and security, the online system does not display the current registered owner’s name or historical encumbrances to general users. Deeper digital records are only accessible to the actual registered owner via a verified profile on the SmartLands application. To verify legal ownership, your lawyer must pull a certified copy directly from the local Land Office.

2. Geographic Information System (LandsMaps)
This mapping portal plots surveyed land parcels on top of satellite imagery. You can use LandsMaps to instantly verify:

Deed Area: The official total parcel size.
Coordinates: The exact map parcel coordinates and UTM grids.
Appraisal Value: The official Treasury Department valuation.
Jurisdiction: The specific local Land Office branch managing the parcel.

Title Deed Comparison: Chanote vs. Nor Sor 3

Document Type	Market Effect / Certainty	Key Features & Red Flags
Chanote (Nor Sor 4 Jor / NS4J)	Highest Certainty Equivalent to survey-certified freehold ownership. The most liquid and secure title type.	Features precise GPS coordinates and numbered concrete corner markers. Red flags: Mismatched digital coordinates, missing/damaged ground markers, or manual handwritten alterations to the owner's name.
Nor Sor 3 / Nor Sor 3 Gor	Medium Certainty Confirms possessory/usage rights; can theoretically be upgraded to a Chanote.	Lacks precise GPS coordinates (Nor Sor 3 Gor uses aerial photography for better boundary tracking). High risk of boundary overlap disputes. Nor Sor 3 requires a mandatory 30-day public notice period before a transfer can occur.
Nor Sor 4 / Older Records (Sor Kor 1, Tor Bor series)	Very Low Certainty Historical records or tax-payment receipts. Minimal commercial market value.	No formal survey data exists. Extreme risk of encroaching on state-owned, reserved forest, or agricultural reform land. Cannot be safely purchased or commercialized.

Note: The absence of precise GPS coordinates on Nor Sor 3 titles is the most critical practical risk, making boundary disputes with neighbors highly probable.

Reading the Reverse Side: The Encumbrance Check

The back page (สารบัญจดทะเบียน) serves as a chronological ledger of the property's legal life. Look out for these specific transaction types:

Transfers (การโอน): Logs every sale, gift, or inheritance. The final entry represents the true current owner.
Mortgages (จำนอง): Details the mortgagee’s name (usually a bank), the principal loan amount, and the registration date. Must be legally discharged before a transfer can take place.
Leases (เช่า): Any lease exceeding 3 years must be registered here. A registered lease legally binds any subsequent buyer.
Seizures/Attachments (อายัด): Formal court orders that freeze all transactions.
Servitudes (ภาระจำยอม): Permanent easements (e.g., granting a neighbor right-of-way access or utility lines across the plot) that survive property transfers and cannot be unilaterally removed.

Due Diligence Red Flags: Multiple rapid ownership transfers within a short window (indicative of speculative flipping or fraudulent title masking), overlapping boundaries on LandsMaps, missing official officer stamps/signatures, manual ink scratch-outs, or marginal notes indicating pending litigation or zoning disputes.

Condominiums and the Foreign Quota Check

Under the Thailand Condominium Act, foreign nationals collectively cannot own more than 49% of the total saleable area of a registered condominium project. This is a project-level constraint, not a unit-level one. To verify availability:

Secure a formal confirmation letter from the building’s Condominium Juristic Person (CJP) detailing the current foreign ownership percentage.
Have your lawyer cross-reference this letter directly against the foreign ownership registers maintained at the local Land Office.

If the 49% cap has been reached, the Land Office will completely block any further transfers to foreign buyers until a foreign unit is sold back to a Thai national.

Step-by-Step Workflow for Buyers: From Online Check to Completed Transfer

Step 1: Day 1 Preliminary Pre-Check
Run deed details through LandsMaps to verify location, parcel shape, and appraised value. (Cost: Free)

Step 2: Day 2–3 Appoint a Property Lawyer
Instruct a licensed Thai lawyer to pull a certified copy of the deed and inspect the original physical register (สารบบ) at the Land Office. (Takes 3-7 business days | Approx. Cost: THB 10,000–30,000)

Step 3: Day 7–10 Review the Due Diligence Report
Evaluate your lawyer's findings on ownership validity, encumbrances, zoning/land-use laws, environmental regulations, and condo quota.

Step 4: Day 10–14Execute the Contract (SPA)
Negotiate and sign the Sale and Purchase Agreement. Ensure it clearly states the transfer date, deposit terms, and conditions for discharging any existing mortgages.

Step 5: Day 15–30 Land Office Transfer Appointment
Both parties attend the local Land Office branch to execute the deed transfer, settle official taxes, and issue the new title deed.

Step 6: Post-Transfer Checklist
Verify your name is updated on the back of the original Chanote. Transfer utility meters and update records with the CJP.

Land Office Transfer Costs & Taxes

2% Transfer Fee: Calculated strictly against the government-appraised value from the Treasury Department (per Section 457 of the Civil and Commercial Code). By standard practice and custom, this fee is typically split 50/50 between the buyer and seller (1% each), though the SPA can dictate otherwise.
Withholding Tax, Specific Business Tax (SBT at 3.3%), or Stamp Duty (0.5%): By law, these taxes are based on the seller's income and length of ownership, making them the sole legal responsibility of the seller.

Worked Example: Verifying a Chanote Online
Suppose you are looking at a landed plot in Tambon Bang Lamung, Amphoe Bang Lamung, Chon Buri Province:

Chanote Number: 12345
Survey Page Number (หน้าสำรวจ): 6789
Seller-Claimed Owner: Mr. Somchai Jaidee
Stated Area: 1 Rai, 2 Ngan, 50 Square Wah

Verification Steps:

Convert the land area into square meters:
1 Rai = 1,600 sqm
2 Ngan = 800 sqm
50 Square Wah = 200 sqm
Total Area: square meters.
Input Chanote 12345 and Survey Page 6789 into LandsMaps. Check if the satellite overlay reveals a plot measuring roughly 2,600 square meters that perfectly matches the physical layout and fences you saw in Bang Lamung.
Cross-examine the physical reverse side of the deed provided by the seller. Ensure the final entry lists "Mr. Somchai Jaidee" as the sole transferee. If a bank mortgage notation is present, require a formal bank discharge letter before proceeding to the Land Office transfer appointment.