I'm on a retirement extension of my permission to stay. I'm not proving that I live with my Thai wife. I'm proving I live at a property that she owns. i.e. verifying my address. I did my very first 1 year extension based on retirement before I got married and used my GF's (now my wife) ID card & Tabien baan to verify my address. Since then I have done extensions based on both retirement & marriage at 3 different immigration offices (Korat, Surin & Buriram) and all of them accepted the ID card & Tabien baan as verification of my address. The last 10 extensions were all based on retirement.