What are the specific requirements for extending a Non-OA visa in Thailand?

The requirements for extending a Non-OA visa in Thailand can vary by location. Generally, you may need to provide financial proof such as having 800,000 baht in your bank account for at least two months prior to application or demonstrating an income of 65,000 baht per month through international transfers for twelve months. Additionally, health insurance requirements differ between immigration offices; for instance, Phuket might not require a health insurance certificate if you were residing in Thailand before the 2019 regulations. However, Pattaya does require this certificate regardless of residency duration. For retirees over 75, there's a requirement for 100,000 USD health insurance. It's advised to confirm specific requirements directly with your local immigration office.