Based on Thai spouse.
Exactly, it's not the first extension, before I was living in a rented condo and visa extensions were based on owner signed ID card and rental contract.
Now I bought my own condo. Real estate agent made the chanote and blue house book (but, of course, without my name). So I have: the chanote, the contract, the blue book.
The immigration office is Chaeng Wattana, Bangkok.
(Don't worry, you're not rude)