STATEMENTS. This claim may be used to file for the Homeowners' Exemption for the Assessment Roll and the Supplemental Assessment Roll. Below is a representative, nonexclusive list of property that may be exempt from property tax.Tax Information and Assistance: (304) 558-3333 or (800) 982-8297 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. To apply for homestead exemption, you must bring the required documents (listed above) to our office and apply in person. Contra Costa County. California disaster duedate relief. Supreme Court thwarts DE unclaimed property law.