Access forms available from the Assessor's office, including benefits, business personal property, change in ownership, and other general forms. General Information.Victims of severe winter storms, flooding, and mudslides in California beginning Jan. 8, 2023, now have until Oct. Contra Costa Health Plan Recognized for Exceptional Quality of Care. The information is used to authorize a family to look for an eligible unit and specifies the size of the unit. Unsecured (Personal) Property Taxes are ad-valorem (value based) property taxes that are billed to the owner of record as of January 1 of each year. The employees who obtains the service or material should complete District form. 7261 for an expenditure reimbursement. 2. Please Download PDF BOE-571-S REV.