@Ifey *******

If you bought a Tourist Visa from a Thai Embassy/Consulate outside Thailand before you entered, you get your extension from the main Immigration Office at Chaengwattana, Building B, Counter J. If you entered on visa-exempt, you are going to go to IT Square, Laksi Plaza (3rd Floor) temporary office, just next to Lak Si station of SRT Dark Red Line. All extensions cost 1900B.

@Pete *****

Bangkok used to require having done a 90 day report before issuing a residence certificate but that requirement has gone

@Jesper ******

or get it free within 25 minutes (Sa Kaeo province)

You need to ask your Immigration Office (the one that issued your extension of stay) if they will allow the change of reason for your extension of stay (it's not a visa, you cannot change that) as some will and some will not

@Ruud *****************

A residence certificate is a verificattion of your address, nothing to do with visa status

@Kim ******

there is no 12 month Non-O now on the eVisa system

@Arendarski ******

so that is your retirement visa and you want a 12 month extension of stay which is not a visa

@Stuart ********

ok so it's a terminology thing again (retirement visa = 12 month extension of stay).

@Arendarski ******

you have to leave and re-enter to activate your Non-O, it cannot be done in country

@Alan ********

you free up 400k of the 800k 3 months after the extension is granted