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. Download PDF BOE-266 REV. Edit, sign, and share homestead san bernardino county online. No need to install software, just go to DocHub, and sign up instantly and for free. A new owner will automatically receive an exemption claim form in the mail and there is no cost to file. To find out more about the conditions under which a payment plan may be authorized please contact one of our tax specialists at (909) 387-8308. The new law eliminates many qualifying conditions and provides a homestead exemption to anyone with a principal residence. In California, you don't necessarily have to file a homestead declaration.