If anyone is interested, here is a copy of the documents required list from Chaengwattana for extension on reason of Thai wife, received May 2025. Document is dated October 2023.
PS: Last year information counter told me to get the form from section L. Yesterday section L told me to get the form from Information counter (which is much better as it's much faster).
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TLDR : Answer Summary
This post provides a list of documents required for a yearly visa extension based on marriage to a Thai spouse at the Chaengwattana Immigration office in Bangkok. It includes personal experiences regarding the process of obtaining the necessary forms, emphasizing the importance of checking with the specific immigration office for accurate requirements.
NON-O RETIREMENT VISA RESOURCES / SERVICES
Go to the Retirement Visa Section for information on requirements, including age restrictions, financial requirements, and necessary documentation.
For immediate assistance, contact Thai Visa Centre directly via LINE at @ThaiVisaCentre or Email them.
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Everyone pay attention ๐ฎ this is to get a yearly extension based on marriage to a thai at the main immigration office here in Bangkok at the government complex on Chaengwattana Road (In section L-1) ๐
Your office might or might not require the same thing and that's why we recommend you slog on out to your office and get their list o' documents for what ever visa/extension you're getting well before you're going to attempt it ๐