@Anna *************
a lot of people have a hard time getting it extended, and after September 30, you can't get another extension.
From a recent report:
I was in Nonthaburi to extend my STV visa. Here's what the officer asked...
1. Copy of passport
2. Copy of TM6
3. Copy of STV visa page on your passport
4. TM7, use the last updated one or get it from Immigration Office. With a photo affixed.
5. STM 2. Declaration that you're aware about overstay and the penalties.
6. ASQ certificate letter stating that you've completed 14 days quarantine.
7. Some kind of proof that you indeed stayed at the ASQ, i produced my ASQ hotel receipt ( room charges )
8. Health Insurance showing coverage amount, line by line items in details of IP, OP, Covid coverage amount.
9. Rental. To state clearly rental period when to when, at where, 4 signatures either passport or Thai ID at the end of agreement ( the usual standard contract ). If the rental's address is in Bangkok, you can only extend visa in Bangkok. Rental period should cover at least 3 months more.
And sign at every page."