Power of Attorney to Divide Jointly Owned Land (Thai Department of Lands, T.D. 21)

หนังสือมอบอำนาจ (ท.ด. 21) is the standard power of attorney of the Thai Department of Lands (กรมที่ดิน). This version has the subject “แบ่งกรรมสิทธิ์รวม” printed on it — division of joint ownership: a plot held by several people under one title deed (โฉนด) is split into separate plots. With this power of attorney one of the co-owners (principal) authorises another person (agent) to act for them at the land office.

The authority text is fully printed on the form: request a survey for the division, bring the surveyor, place boundary markers and certify boundaries; if the survey gives a map or area different from before, consent to correct them to the actual figures; amend the application (if needed), register the division, pay and collect the remaining survey deposit, receive the title deed and make statements to the officer. Co-ownership is governed by the Thai Civil and Commercial Code (sections 1356–1366).

• the principal — a co-owner of the plot on the title deed (ผู้มอบอำนาจ);
• the agent — the person who goes to the land office (ผู้รับมอบอำนาจ);
• two witnesses who attest the principal's signature or fingerprint.

If the agent is another co-owner or represents one, a note on the form requires adding consent for the agent to act both in their own name and on behalf of the other party. Usually all co-owners take part in the division; a co-owner who cannot attend gives their own power of attorney — check the procedure with the land office.

• place and date (year in the Buddhist Era, พ.ศ.);
• land details from the โฉนด title deed: map sheet, parcel number, survey page, deed number, sub-district, district and province;
• name, Thai ID number, age, race, nationality, parents' names, address and phone of the principal and the agent;
• additional powers — if needed, up to two lines;
• signatures of the principal and two witnesses — by hand.

The co-owners' shares, the number of new plots and the names of the other co-owners are not written in this power of attorney.

• the original title deed (โฉนดที่ดิน);
• copies of the principal's ID card and house registration, signed by them;
• the agent's ID card or passport;
• where needed — marital status documents or spouse's consent.

The exact list, fees, the survey deposit and processing times are not stated on the form — check with the land office (สำนักงานที่ดิน) where the land is registered. Foreigners should check the rules in advance.

1. Open the chat on this page and describe the situation in any language: which co-owner is the principal, who will be the agent, which plot.
2. Send photos of the title deed and ID cards or answer the questions — the assistant writes the data in Thai script and converts the year to พ.ศ.
3. Review the fields and download the PDF.
4. Print, sign in front of two witnesses and hand it to the agent together with the title deed and document copies.

Thai Department of Lands sample power of attorney “หนังสือมอบอำนาจ (ท.ด. 21) — แบ่งกรรมสิทธิ์รวม”: dol.go.th — power of attorney samples; Department of Lands: dol.go.th. Checked 2026-10-08. This is not legal advice.