Assessor Forms


Business Personal Property

To file: Please fill out the applicable forms below and include the business name, mailing address and account number if you have one. First-time filers should simply print ‘New Account’ across the top of the form and we will assign an account number.

You can file through e-SDR, DocuSign or send to:


Mail to:
San Mateo County Assessor-Clerk-Recorder
ATTN: Business Personal Property Section
555 County Center
Redwood City, CA 94063

If you have questions, call us and leave a voicemail message at 650.363.4501.

Office hours Monday through Friday 8-5 p.m.

File 571-L online
How to e-File 571-L instructions

Form 571-L by applicable year
Specialized property statement forms
Other Forms
Leased Equipment Forms
Valuation Factors

Change in Ownership Forms

The preliminary change in ownership report must be completed by transferee (buyer) prior to transfer of subject property in accordance with section 480.3 of the Revenue and Taxation Code. A Preliminary Change of Ownership Report must be filed with each conveyance in the County Recorder’s office for the county where the property is located. This particular form may be used in all 58 counties of California.
Preliminary Change in Ownership Report (BOE 502-A) 


Change of Address

For Secured or Unsecured Property Tax

Download an address change form

Complete the form and return it to the Assessor via mail, fax or email.


Mark Church Assessor-County Clerk-Recorder
555 County Center, 3rd Floor
Redwood City, CA 94063

Fax: 650.599.7435



Institutional Exemptions Forms

For detailed information, click  the Institutional Exemption detail post.

Property Use Report is required for all institutional exemption filings except for welfare exemptions.

For further information regarding welfare, church and religious exemptions, see Welfare, Church and Religious Exemptions.

Request a specific form to be mailed to you by sending us an email to

Church Exemption

Church Exemption form BOE-262-AH


Possessory Interests Forms

California law requires every state or local governmental entity that is the fee owner of real property in which one or more taxable possessory interests have been created or renewed to provide the assessor of the county in which the property is located information identifying the holder(s) of a taxable possessory interest, the property involved and the terms and conditions of the agreement giving rise to the taxable possessory interests.