Is it harder to get the 12-month extension for a Non-O visa after the initial 3-month period in Thailand?

The process of obtaining a 12-month extension for a Non-O retirement visa in Thailand, especially in Chiang Mai, is generally considered easier than obtaining the initial visa. Previous applicants noted that if you apply at the same immigration office where you received your initial Non-O visa, the extension process is straightforward, with minimal hassle. The specific documentation required may vary, especially based on the basis of your Non-O visa (e.g., retirement or marriage), with retirement visas focusing more on residence documentation. However, applicants should be aware that some individuals have reported complications like home visits, particularly with marriage-based Non-O visas.