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 (สำหรับห้องชุด)”, form อ.ช. 21, is the standard power of attorney of Thailand’s Department of Lands (กรมที่ดิน) for transactions with a condominium unit (ห้องชุด). With it the principal authorises an agent to act on his or her behalf at the Land Office — for example to sell, buy or mortgage the unit, or to release a mortgage.
The form records the unit (unit number, floor, building, condominium name and registration number), the land the building stands on (title deed number, sub-district, district, province), the subject of the power of attorney, the principal and the agent, and the text of the powers. It is filled in in Thai.
Who makes it
- the principal (ผู้มอบอำนาจ) — usually the unit owner named on the unit title (อ.ช. 2);
- the agent (ผู้รับมอบอำนาจ) — the person who goes to the Land Office;
- witnesses: according to the notes on the back, at least one, or two if the principal uses a fingerprint instead of a signature.
If the power of attorney is signed outside Thailand, the DOL notes recommend having it certified by a Thai embassy or consulate or by a notary public.
What the form asks for
- place and date (year in the Buddhist Era, พ.ศ.);
- unit and land details from the unit title (อ.ช. 2);
- the subject (“เรื่อง”) and the powers: what exactly is entrusted and any special conditions;
- name, Thai ID number (if any), age, race, nationality, parents’ names, address and phone of the principal and of the agent;
- signatures of the principal and witnesses — by hand.
Documents usually attached
- the original unit title (อ.ช. 2) — where the transaction requires it;
- copies of the identity documents (ID card or passport) of the principal and the agent;
- where relevant — marital status documents or the spouse’s consent.
The exact list of documents, fees, taxes and processing time are not stated on the form — check with the Land Office (สำนักงานที่ดิน) where the condominium is located.
How to fill it in with FoxDocs
- Open the chat on this page and describe what has to be done with the unit and who will be the agent.
- Send photos of the unit title and documents or answer the questions — the assistant writes the data in Thai script and converts the year to พ.ศ.
- Check the fields, especially the text of the powers, and download the PDF.
- Print it, sign it before the witnesses and hand it to the agent with the required documents.
Source
Thai Department of Lands form “แบบฟอร์มหนังสือมอบอำนาจอาคารชุด (อ.ช.๒๑)”: dol.go.th — download page, PDF of the form. Checked on 2026-10-08. This is not legal advice.