Business Services

Business Personal Property


Unlike real property, business personal property is reappraised annually. If you own taxable personal property with an aggregate cost of $100,000 or more on January 1, or if the Assessor has requested a statement be filed, you are required by law to file a property statement by April 1st of each year and detail the costs of all supplies, equipment, fixtures, leasehold improvements, land improvements, and land, as well as other requested information for each business location. Your completed property statement should be received no later than 5:00 p.m. on May 7th, (or the next business day if it falls on a weekend or holiday), or you will be subject to a late filing penalty.


Small business owners with personal property with a value of less than $7,500, may be exempt from personal property tax assessment in San Mateo County but are still required to file a statement if requested by the Assessor. For more information, call (650) 363-4501.


Business Property Statements for the current filing season will be mailed on or about February 14th.


Download a Business Property Statement Form 571-L:


  1. Select the applicable year.

  2. Print the form.
  3. Include the business name, mailing address and account number, if you have one, on the printed form before filing it with this office.  (First-time filers should simply print 'New Account' across the top of the form and this office will assign an account number)

Download Valuation Factors


Download Agency Authorization Letter

(You will need Adobe Acrobat Reader to accomplish the download. Get Adobe Acrobat Reader free here.)


Business Change Form

Has there been a change in your business? If you have moved, sold or closed your business, we need to know about it. Please fill out the Business Change Form, so that we can update our records to reflect your changes.


Mail, fax or email the form to:


San Mateo County Assessor-Clerk-Recorder
ATTN: Personal Property
555 County Center, 3rd floor
Redwood City, CA 94063


Fax: (650) 599-7456


Historical Aircraft Exemption


Affidavit For 4 Percent Assessment of Certain Vessels


Frequently Asked Questions (FAQ) for the Business Owner/Agent
Visit the Business Personal Property FAQ page for assistance on completing your property statement, send an e-mail or call (650) 363-4501.