What's the appeal deadline for San Diego County?

November 30 is the deadline for assessment appeals in San Diego County.

Is San Diego different from other CA counties for appeals?

The process is similar across California, but San Diego has a later deadline (November 30 vs September 15 for most counties). The Prop 13 rules apply statewide.

Guides/California/San Diego County

San Diego County, California

How to Appeal Property Taxes in San Diego County (2026)

Appeal Deadline

November 30 (for regular roll; supplemental/escape: 60 days from notice)

County Assessor Appeal Forms

Overview

San Diego County, with approximately 1 million parcels, has a strong real estate market that can still see neighborhood-level declines. The county assessor manages assessments under California's Prop 13 framework. While San Diego's market has been more stable than San Francisco's, there are still opportunities for appeals, particularly for properties purchased at market peaks.

Step-by-Step Appeal Process

Check your assessed value at the San Diego County Assessor website

Research comparable sales in your area

If market value is below assessed value, file an application with the Assessment Appeals Board

Deadline: November 30 for San Diego County

Compile evidence and prepare for your hearing

Attend the hearing or submit written evidence

What Evidence Do You Need?

Recent comparable sales in your neighborhood

Market trend data for your area

Appraisal or broker opinion of value

Documentation of property condition issues

Common Reasons for Successful Appeals

Purchased at a market peak and values have since declined

Neighborhood-specific factors reducing value

Property condition issues not reflected in assessment

Incorrect property records

Tips for Success

1San Diego's November 30 deadline gives you more time than most CA counties

2Coastal and inland areas can have very different market trends — use local comps

3The county offers an informal review that can resolve issues without a formal hearing

Frequently Asked Questions

Check Your Assessment in San Diego County

Enter your address to see if you're overpaying and get a professional appeal packet for $49.

Free Assessment Check

This guide is for informational purposes only and does not constitute legal advice. Deadlines and procedures may change. Always verify current information with your county assessor.