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. A homeowner must file for the homestead exemption with the correct county recorder's office. An example of a form can be found HERE. A homestead exemption protects home equity from a homeowner's creditors, up to a certain dollar amount. When and Where To File. Specific instructions for completing Form 1096 are included on.