Complete a homestead declaration form. The regular filing deadline is February 15th to receive the full exemption.Complete form BOE-266, Claim for Homeowners'. Property Tax Exemption. 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. Welcome to the homestead estimated amount page for Single Family Detached homes for Santa Clara county. School Districts may offer Special Assessment (SA) tax exemptions to eligible taxpayers. President Abraham Lincoln signed the Homestead Act on May 20, 1862. Welcome to the Superior Court of Santa Clara County. Jury Service, E-Filing, Traffic Tickets, Self-Help, Contact Clerk's Office.