Subject: 
Non-O Immigrant Visa Based on Marriage to Thai National
Me:
US Citizen, arrived to Thailand in August 2021 with 60-day tourist visa, have been staying with Covid-extensions. Married in Dec 2021. Currently living in Bangkok. Current extension valid till March 4 2022.
Goal:
Looking to change tourist visa to 90 day non-o immigrant visa based on marriage while in Thailand.
Question: What documents/requirements do I need, how much will it cost and which office should I go apply?
Thanks in advance!