The Personal Property Unit is responsible for the discovery and assessment of all taxable business property, boats, commercial and private aircraft. The San Bernardino County Assessor provides several options for filing Business Property Statements (571L): eFile Quick and EasyWhat is business personal property? How Do I Register My Business? 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. Our firm has highly skilled and trained tax experts that know the tax laws inside and out and offer our services to businesses and companies of all sizes. Total of 68 forms are available for San Bernardino County for 2024. NEW TAX COLLECTOR OFFICE HOURS: The Tax Collector's office is open to the public Monday – Friday from am – pm, excluding holidays.