FOR COUNTY AUDITOR'S USE ONLY: Taxing district and parcel or registration number. Auditor's application number.A homestead exemption application form ("DTE 105A") is available from the Ohio Department of Taxation. For more information about the Homeowners' Exemption, please call (510) 272-3770. Address. To qualify for the homeowners' exemption, the home must have been the principal residence of the owner as of January 1 of that tax year. Applications for the homestead exemption must be filed on or before December 31 in the tax year for which the credit is sought. Calculate how much you can expect to pay in property taxes on your home in Alameda County, California. Compare your rate to the state and national average. We recommend contacting your insurance company before your visit to verify coverage for the specific service you're seeking. Buy a home with the right mortgage for your unique needs.