What additional documents do I need for a 60-day Visit Family Extension beyond TM7 and my passport?

To apply for a 60-day Visit Family Extension in Thailand, you need to provide additional documents besides your TM7 form and passport. If your application is based on marriage, you will need your marriage certificate, your Thai wife's ID card, and the house book listing. If based on children, include the child's birth certificate, the mother's Thai ID, and the house book listing for both mother and child. It's also necessary for your spouse or child to be physically present during the application process. Additionally, you may need to show a TM30 receipt to confirm your residence location and possibly a copy of the TM6 departure card. A 90-day report receipt may also be requested if applicable.