As of January 1, 2021, the California homestead exemption is a minimum of 300,000 dollars, but can be as high as 600,000 dollars. To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located.Complete form BOE-266, Claim for Homeowners'. Property Tax Exemption. A new owner will automatically receive an exemption claim form in the mail and there is no cost to file. You are still eligible if you have a mortgage or are delinquent on your taxes. Abatements. Homestead: This exemption can help homeowners reduce state property taxes and protect surviving spouses from creditors. Get free legal advice and find a free or lowcost lawyer.