Property and land transaction document certification
This page sets out what property and land transaction document certification requires: 6 documents to prepare, 5 steps in the order they must actually happen, preparation advice, and the mistakes that most often send a file back. If you would rather not run the process yourself, our team can handle it end to end.

Documents to prepare
- Original document plus one clear copy of every page
- Copy of the passport or Thai national ID card of the signatory
- Written statement of the purpose and the receiving authority
- Supporting records the receiving authority lists in its own checklist
- Power of attorney if the signatory cannot attend in person
- Contact details for follow-up questions from the receiving authority
Process steps
- Step 1. State the purpose and the receiving authority so the correct level of certification is chosen.
- Step 2. Send scans of every page so completeness can be checked before work starts.
- Step 3. Prepare the translation or the instrument in the format the receiving authority requires.
- Step 4. Sign or certify before the officer authorised by law to witness that document type.
- Step 5. Collect the finished set and keep a copy for the next filing.

What gets files rejected
- Land office documents must match the title deed number exactly.
- Powers of attorney for land transactions use a prescribed form.
- Spell every name exactly as it appears in the passport, across every document in the same bundle.
- Never remove staples or separate pages that an authority has bound and stamped across the seam.
What this certified set is used for
- Property purchase and transfer
- Mortgage registration
- Lease and usufruct filings
Talk to us before you commit to anything
Many clients arrive with one set of documents while the destination expects a different one. We start by asking where you are filing, for what purpose, and by when — then tell you plainly what is required, including the steps you can complete yourself at no extra cost. A team with over 15 years in cross-border documentation is available before you spend time on the wrong route.
- Destination requirements explained in plain language.
- A clear statement of which steps your case needs and which it does not.
- Help sequencing multiple documents across multiple authorities.
Consult us at LINE @THAIL · 092-0170000 · Contact@thailaw-accounting.co.th
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