Visit one of office locations to complete the Business Property Statement. You will be asked to present valid government-issued photo ID when you arrive.Tax Collection Forms. Can the county assessor prorate assessments or taxes between the buyer and seller of taxable personal property? Obtain forms from either the County Assessor or the Clerk of the Board in the county where the property is located). Us or contact one of the County. For information regarding property taxes, penalties due, payment options, and payment status, visit the San Diego County Treasurer-Tax Collector's website. The following forms may be used during the process to appeal your property tax assessment. Most forms are in Adobe Acrobat Reader format. The online renewal form will be available on this webpage.