What documents do I need for a 60-day extension to visit my Thai wife?

To apply for a 60-day extension to visit your Thai wife, you will generally need to provide similar documents as required for a marriage extension. These include your TM30 form, your marriage certificate, your wife's ID, and proof of residence (if she owns the property). If she does not own property, a 'tambien baan' may be necessary. Remember to also take along the reason for the extension.