Contact the Registrar-Recorder's office where the property is located for fees and filing addresses. In Los Angeles County call (800) 201-8999, option 2.They can also be reached at 1 (800) 201-8999. The Registrar Recorder's Office is the authorized county agency to record deeds and Declarations of Homestead. Complete a homestead declaration form. Sign your declaration in front of a notary. To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. The new California Homestead Exemption was introduced through AB 1885 on Sept 18, 2020. The legislation will take effective on Jan 1, 2021. A homestead exemption application form ("DTE 105A") is available from the Ohio Department of Taxation.