A homeowners' exemption may also apply to a supplemental assessment. For more information, call (925) 313-7481.STATEMENTS. This claim may be used to file for the Homeowners' Exemption for the Assessment Roll and the Supplemental Assessment Roll. Download PDF BOE-266 REV. Residence Homestead Exemption Application (includes Age 65 or Older, Age 55 or Older Surviving Spouse, and Disabled Person Exemption). Welcome to Online filing of the. General Residence Homestead Exemption Application for 2024. Going over how to properly fill out your homestead tax exemption. This one is primarily for the Dallas County residents. Applying for a homestead exemption in Texas is relatively straightforward.