About the document
- Country:
- Thailand
- Category:
- Land and property
- How to fill:
- Chat in any language → original form → PDF
- Price:
- form free · chat ฿149 per document
- Last updated:
What this document is
หนังสือมอบอำนาจ (ท.อ.๔) is the standard power of attorney form of Thailand’s Department of Lands (กรมที่ดิน) for land held not under a chanote but under a certificate of utilisation: น.ส.๓ (Nor Sor 3) or น.ส.๓ ก. (Nor Sor 3 Kor). With it the owner (principal) authorises another person (agent) to carry out a transaction with the plot at the Land Office: sell, mortgage, give, request a survey and so on.
The subject (“เรื่อง”) and the powers (“เป็นผู้มีอำนาจจัดการ”) are not pre-printed — they are written in. The back of the form lists seven warnings: state the land document details, describe clearly what is delegated, never sign a blank form, etc. The form is filled in in Thai.
Who makes it
- the principal — the owner of the land under the น.ส.๓ / น.ส.๓ ก. (ผู้มอบอำนาจ);
- the agent — the person who goes to the Land Office (ผู้รับมอบอำนาจ);
- witnesses: according to the back of the form, at least one, and two if the principal uses a fingerprint.
According to the back of the form, a power of attorney made abroad should be certified by a Thai embassy or consulate or by a notary public.
What the form asks for
- the subject, place and date (year in the Buddhist Era, พ.ศ.);
- land document details: type (น.ส.๓ or น.ส.๓ ก.), number, book and page, for น.ส.๓ ก. also the aerial photo sheet and land number, sub-district, district and province;
- name, Thai ID number, age, race, nationality, parents’ names, address and phone of the principal and of the agent;
- exactly what the agent is authorised to do;
- signatures of the principal and witnesses — by hand.
Documents usually attached
- the original land document (น.ส.๓ or น.ส.๓ ก.);
- copies of the principal’s ID card and house registration, signed by the principal;
- the agent’s ID card or passport;
- where relevant — marital status documents or the spouse’s consent.
The exact list, fees, taxes and processing time are not stated on the form — check with the Land Office (สำนักงานที่ดิน) where the land is registered.
How to fill it in with FoxDocs
- Open the chat on this page and describe in any language what has to be done with the plot, who the principal is and who the agent is.
- Send photos of the land document and ID cards or answer the questions — the assistant writes the data in Thai script and converts the year to พ.ศ.
- Check the fields and download the PDF.
- Print it, write the ID numbers into the boxes, sign before the witnesses and hand it to the agent together with the land document.
Source
Thai Department of Lands form “แบบฟอร์มหนังสือมอบอำนาจ น.ส.๓, น.ส.๓ ก. (ท.อ.๔)”: dol.go.th — power of attorney samples. Checked on 2026-10-08. This is not legal advice.