where I am , bank opens go in ask for letter , statement, update passbook. Go for lunch, pick up documents. Copy everything needed for application, already have photo . Go to immigration, fill in forms , get forms checked , get 30 day under consideration stamp. Wait for phone .. they may come and check where I live … 1 hours notice within them 30 days. Go back to immigration on said date , pay and get 1 yr extension stamp.
maybe for where you are. Where I live immigration turn up and take photos and ask neighbours if you really live there and socialise with them .. and that’s on a retirement extension
Passport , proof of residence, Thai phone number, copy of visa/ work permit , anything else you can think of. You may have to try quite a few banks and even branches of banks to get one.
Usually 30 be prepared for some interesting new requirements. Some immigration offices now give a 30 day under consideration stamp and insist on house visits to check you actually live where you say.