I'm in Thailand on original 1 year visa O-A retirement out of USA. I understand I'll have to apply for extension of stay after I reach the end of the admit to date. I plan on having the 800K baht in a thai bank account a minimum of 2 months prior to applying for extension of stay. Not sure I understand how the requirement to have funds for 3 months after the application date is proved since the extension will be my first.

Thank you.

Do I need to report to immigration for same address?

What if the address you return to in Thailand is the same when you left? In other words my wife's house is where I stay

But I will say it can't hurt to have it included. Just ask for a criminal background check for immigration purposes at the live Scan location. The process is simple.

I went through LA cosulate. I used both live Scan and a local sheriff's report notorized by their office. I would say the live Scan was not needed by the level of analysis done at the consulate. Note the results of the live Scan were very short, no criminal records found based on fingerprints.

One day file papers and give consulate a self addressed envelope from USPS. Or just go back in person next day after 10 am.