A family tree statement and certificate of heirs — what should you know about the translation and legalisation sequence for overseas use?

This question is specifically about “A family tree statement and certificate of heirs”, so it flags what usually causes documents like this to be rejected before summarising the general practice. Before starting, ask in advance which category of certified translator the destination accepts, then plan the timeline so certification finishes before the real filing deadline, then keep a digital copy of every page, including seals and signatures. The biggest risk in cases like this is doing the certification steps out of order, which forces a restart. The deciding factor is the receiving body's requirement, not only the format of the Thai-side document. The terms that frame this page are family · tree · statement · certificate. The specifics here are document type: Heircert, and those decide which translation and certification level applies. If any requirement is still unclear, send a sample image to the receiving body before producing the full set. High-resolution photos of seals and signatures help when the destination asks for re-verification. Attach a document index to the bundle so nothing is lost during review. Plan the schedule with room for at least one review cycle at the receiving office. With a fixed filing date, count backwards from it and book each certification step in reverse. Thai property and succession documents intended for overseas use normally follow one sequence: obtain the official copy, translate it, submit it to the Legalisation Division of the Department of Consular Affairs, Ministry of Foreign Affairs, and then to the destination embassy or consulate where the destination requires it. The order cannot be swapped, because each layer certifies the signature of the previous one. Thailand deposited its instrument of accession to the Apostille Convention on 30 June 2026, but the Convention is not yet in force for Thailand. In practice the traditional route through the Department of Consular Affairs and the destination embassy still applies until entry into force is formally announced. For Australia, government agencies and courts require non-English documents to be accompanied by a translation from a NAATI-certified translator; the translation carries the stamp, practitioner number and certification expiry on its face. ILC handles document work only — translation, certification of the translation, notarial signature certification and the legalisation run at the Ministry of Foreign Affairs and embassies. ILC is not the Land Office, not a court and not an estate administrator, and cannot guarantee any authority's decision. Cost and lead time depend on page count, the language pair and the certification steps the destination requires, so every file is quoted before work starts. Send scans of the title documents together with the instructions issued by the Land Office, court or receiving authority via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

ปรึกษาฟรี — LINE @NAATI · โทร 080-5578887 · อีเมล ilc@thainotary.co.th