Assessor Forms
The review period is closed.
You may request an informal review of your assessment from July 1 to December 31.
Forms are available for download and use. Please fill out your form as completely as possible for quicker processing. Include the work unit or topic on the envelope (i.e. Exemptions, Personal Property, Change of Address, etc.).
Please provide:
- Name or business name
- Mailing address
- Location of business, if applicable
- Parcel number, if known
- Telephone number
The Assessor’s Office accepts form filings submitted on the due date provided they bear a valid and timely postmark. The U.S. Postal Service (USPS) has recently clarified its postmarking procedures, which may affect how mail is dated. As a result, mailed tax documents and forms may not receive a same-day postmark, even if deposited on or near the filing deadline.
To help ensure timely processing, taxpayers are strongly encouraged to mail documents as early as possible to allow for additional USPS handling time. Taxpayers may also visit their local post office to request a hand-stamped “manual postmark” on the date of mailing. For added assurance, taxpayers may consider using USPS services that provide proof of mailing or take advantage of online filing options when available.
Federal Register: 2025-20740/postmarks-and-postal-possession
If this information is not provided we may not be able to process your form.
Select the type of form you need or go directly to CA Assessor E-Forms (not a County website):
- Base Year Value Transfers
- Business Personal Property
- Calamity Affidavit Executed Outside California
- Calamity Application and Instructions
- Calamity Tax Installment Deferral Application
- Change In Ownership Report Addenda Income Properties
- Change in Ownership Report Addenda Multi-Residential Properties
- Change in Ownership Report Addenda Lodging Properties
- Death of Real Property Owner
- Exemptions
- Homestead Declaration
- LCA Questionnaire
- LCA Trees and Vines Questionnaire
- Land Development Cost Statement for Tax Estimates
- Mailing Address Change
- New Construction Agriculture Questionnaire
- New Construction Subdivision Questionnaire
- New Construction Reassessment Exclusions
- Ownership Change Reassessment Exclusions
- Parcel Combination Request
- Possessory Interest Lease Report
- Preliminary Change In Ownership Statement (PCOR)
- Property Owners Letter of Authorization
- Reassessment Reversal for Local Registered Domestic Partners
- Service Members Civil Relief Act
- Tax Estimate Request
- Change in Ownership Oil and Gas
Please be aware that every California county has their own set of forms. If your property is located in another county, please contact that county's Assessor's Office.