San Diego County Property Tax Appeal, California

Travis Bunn·Updated July 24, 2026

Watch: How to appeal your property taxes in San Diego County

San Diego County, with its county seat in the city of San Diego, is California's second-largest county with an estimated 3.3 million residents as of 2026. Major population centers include San Diego, Chula Vista, Oceanside, Escondido, Carlsbad, El Cajon, and San Marcos. Property tax appeals are particularly important here given the county's high effective property tax rate of 1.19%, significantly above the national median of 1.02%. The median annual property tax bill of $5,807 is $3,407 higher than the national median of $2,400, making careful assessment review critical for San Diego County homeowners seeking to reduce their tax burden.

Notable cities: San Diego, Chula Vista, Oceanside, Escondido, Carlsbad, El Cajon, San Marcos, Encinitas

Median Home

$725,200

Tax Rate

1.19%

Annual Tax

$5,807

Population

3,276,954

On the typical San Diego County home, valued near $725,200 at the county’s effective tax rate of 1.19%, an over-assessment of even 10% means you are overpaying year after year until you appeal it. Here is how to find out if yours qualifies.

2026 Appeal Deadline: July 2, 2026 through November 30, 2026

That is at most 97 days away. Your exact date is on your assessment notice, so do not wait on it.

For regular assessments (value as of January 1), appeals must be filed between July 2 and November 30, 2026. San Diego County uses the extended November 30 deadline because assessment notices are not mailed to all property owners by August 1. For supplemental assessments or escape assessments, the deadline is 60 days from the date of the notice mailing. All applications must be received by 5:00 p.m. on the deadline date.

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California residential street with palm trees at sunset. San Diego County appeal guide.

How San Diego County Assesses Property

100%of market value

Assessed by: San Diego County Assessor/Recorder/County Clerk

Assessment cycle: annual

Notices typically mailed: June-July

California assesses property at 100% of its market value as of the January 1 lien date, subject to Proposition 13 limitations. If your home's market value is $725,200 (San Diego County's median), at California's 100% assessment ratio your assessed value would be $725,200, resulting in approximately $8,630 in annual taxes at the county's effective rate of 1.19%. However, Proposition 13 caps annual assessed value increases at 2% unless the property is sold or substantially improved, meaning your actual assessed value may be lower than current market value if you purchased years ago.

The Appeal Process

Appeals are heard by the Assessment Appeals Board. The Assessment Appeals Board consists of three members with expertise in real estate, appraisal, accounting, or law. Hearings are quasi-judicial proceedings where both you and the Assessor present evidence and testimony. You will be notified at least 45 days before your hearing date, and appeals must be decided within two years of filing.

Step 1: Contact the San Diego County Assessor's Office first at (858) 505-6262 to discuss your assessment informally. The Assessor may review your information and correct errors without requiring a formal appeal, potentially saving you time and resolving the issue before the appeal deadline.

Step 2: If the informal review does not resolve your concerns, gather evidence supporting your claim that your property is overassessed. This includes comparable sales data from the Assessor's office or a local real estate agent, photographs documenting property condition or defects, repair estimates for needed work, and a professional appraisal if available.

Step 3: Complete the Assessment Appeal Application (Application for Changed Assessment) available from the Clerk of the Board at (619) 531-5777 or online at sandiegocounty.gov. Include your parcel number, property address, and your opinion of the property's fair market value as of January 1. Check 'yes' on the claim for refund option if you want an automatic refund if your appeal succeeds.

Step 4: File your completed application with the Clerk of the Board of Supervisors by mail to 1600 Pacific Highway, Room 402, San Diego, CA 92101-2471, or in person at the same address. The application must have your original signature and be received (not just postmarked) by 5:00 p.m. on November 30, 2026. There is no filing fee for residential property tax appeals in San Diego County.

Step 5: After filing, both you and the Assessor's Office will exchange information about the property. The Assessor may contact you to discuss a potential settlement or stipulation. Many cases are resolved through stipulation without requiring a hearing. If an agreement is reached, both parties sign a written stipulation and no hearing is necessary.

Step 6: If no stipulation is reached, you will be notified of your hearing date at least 45 days in advance. Property tax appeals must be decided within two years of filing. At the hearing before a three-member Assessment Appeals Board, you will present your evidence and testimony. The Assessor will also present their valuation. Hearings are open to the public and you may represent yourself or hire representation.

Step 7: The Assessment Appeals Board will review all evidence and issue a decision. The Board may decrease, increase, or maintain your assessed value. If your value is reduced and you checked 'yes' for claim for refund, the San Diego County Auditor will automatically process a refund of overpaid taxes.

Step 8: If you disagree with the Assessment Appeals Board decision, you may appeal to the California State Board of Equalization or file an action in San Diego County Superior Court within six months of the Board's final determination if you filed a claim for refund. Consult with a property tax attorney to evaluate your appeal rights.

Required form: Assessment Appeal Application (Application for Changed Assessment) - available from the Clerk of the Board of Supervisors

Filing Methods

mail:Clerk of the Board of Supervisors, Assessment Appeals, 1600 Pacific Highway, Room 402, San Diego, CA 92101-2471. Must be received (not postmarked) by 5:00 p.m. on November 30, 2026.

in-person:County Administration Center, 1600 Pacific Highway, Room 402, San Diego, CA 92101-2471. Applications must have original signature and can be submitted Monday-Friday during business hours.

email:Supporting documents can be emailed to AssessmentAppeals@sdcounty.ca.gov, but the original Assessment Appeal Application with signature must be submitted by mail or in person.

Evidence to Bring

Comparable sales data showing similar properties sold for less than your assessed valuePhotographs documenting property condition, defects, or damageProfessional appraisal report (helpful but not required)Repair estimates or contractor bids for needed workDocumentation of income loss for income-producing properties

San Diego County Assessor Contact

San Diego County Assessor/Recorder/County Clerk

Website: https://www.sdarcc.gov

Hours: Monday-Friday, 8:00 a.m. to 5:00 p.m.

Tax Exemptions in San Diego County

Homeowners' Exemption

$7,000 reduction in assessed value (approximately $70 annual savings)

Reduces the assessed value of your primary residence by $7,000, resulting in approximately $70 in annual property tax savings. Available to any homeowner who occupies their property as their principal place of residence on the January 1 lien date.

Eligibility: Property must be your principal residence as of January 1. You can only receive one exemption and must choose between Homeowners' Exemption and Disabled Veterans' Exemption.Deadline: February 15 for full exemption in current year; late applications accepted through December 10 for reduced benefit (90% of exemption). Once granted, the exemption rolls over automatically each year.

Disabled Veterans' Exemption - Basic

$180,671 assessed value reduction (approximately $2,150 annual savings at 1.19% rate)

Provides a $180,671 reduction in assessed value (2026 amount) for qualifying disabled veterans rated 100% disabled due to service-connected disability or compensated at 100% due to unemployment. Saves approximately $1,700-$2,150 annually depending on local tax rates.

Eligibility: Veterans with 100% service-connected disability rating or compensated at 100% due to unemployability. Property must be veteran's principal residence. Unmarried surviving spouses also qualify. No income limit for basic exemption.Deadline: File form BOE-261-G by February 15 for current year. Initial applications can be filed anytime and exemption rolls over annually once granted.

Disabled Veterans' Exemption - Low Income

$271,009 assessed value reduction (approximately $3,225 annual savings at 1.19% rate)

Enhanced exemption providing a $271,009 reduction in assessed value (2026 amount) for qualifying disabled veterans whose household income is below the annual threshold. Must reapply annually with income documentation.

Eligibility: Same disability requirements as basic exemption, plus household income must not exceed $81,131 (2025 income limit for 2026 tax year). Income from VA benefits and Social Security counts toward household income limit.Deadline: Must reapply annually by February 15 with prior year's tax returns and income statement. Late filing by December 10 provides 90% of exemption; after December 10 provides 85% of exemption.

Veterans' Exemption

Varies based on property value

Available to qualifying veterans with extremely limited assets, providing a small property tax reduction. However, asset limits ($5,000 for individuals, $10,000 for married couples) make this exemption impractical for most homeowners.

Eligibility: Veterans with honorable discharge whose total personal property does not exceed $5,000 (or $10,000 for married couples). Most veteran homeowners use Homeowners' Exemption or Disabled Veterans' Exemption instead.Deadline: February 15 annually

San Diego County Appeal Statistics

Avg Reduction

$1,877

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Frequently Asked Questions

What is the deadline to appeal my property taxes in San Diego County for the 2026 tax year?

For regular assessments (your annual assessed value as of January 1), you must file your appeal between July 2, 2026 and November 30, 2026. San Diego County uses the extended November 30 deadline because the Assessor does not mail assessment notices to all property owners by August 1. Your appeal application must be received (not just postmarked) by 5:00 p.m. on November 30. If you received a supplemental assessment notice (due to new construction or change of ownership), you have 60 days from the notice mailing date to file an appeal. Missing the deadline means waiting until the next filing period, so mark your calendar and gather evidence early.

How do I file a property tax appeal in San Diego County?

First, contact the San Diego County Assessor's Office at (858) 505-6262 for an informal review, which may resolve your concerns without a formal appeal. If that doesn't work, obtain the Assessment Appeal Application from the Clerk of the Board of Supervisors by calling (619) 531-5777 or visiting sandiegocounty.gov. Complete the application with your parcel number, property address, and opinion of fair market value. File the application with original signature by mail or in person at 1600 Pacific Highway, Room 402, San Diego, CA 92101-2471 by November 30, 2026. There is no filing fee. Include evidence such as comparable sales, photos, and repair estimates to support your claim that your property is overassessed.

What is the homestead exemption worth in San Diego County?

San Diego County offers a Homeowners' Exemption that reduces your assessed value by $7,000, saving approximately $70 per year in property taxes. To qualify, the property must be your principal residence as of January 1. File form BOE-266 with the San Diego County Assessor by February 15 to receive the full exemption for that year, though you can file late through December 10 for a reduced benefit (90% of the exemption). Once granted, the exemption automatically rolls over each year without reapplying. Approximately only 50% of eligible San Diego County homeowners claim this exemption, meaning many residents are overpaying their taxes unnecessarily.

What happens at a San Diego County Assessment Appeals Board hearing?

You will be notified of your hearing date at least 45 days in advance. The hearing is conducted before a three-member Assessment Appeals Board composed of professionals with experience in real estate, appraisal, accounting, or law. At the hearing, you present your evidence and testimony explaining why you believe your property is overassessed. The County Assessor then presents their valuation method and supporting data. The Board reviews both presentations and may ask questions. After considering all evidence, the Board issues a decision to decrease, increase, or maintain your assessed value. You can represent yourself or hire professional representation. If you reached a settlement with the Assessor before the hearing and signed a stipulation, no hearing is necessary.

How much can I save by appealing my property taxes in San Diego County?

Savings depend on your property's overassessment and San Diego County's effective tax rate of 1.19%. According to appeal service providers, successful appeals in San Diego County save homeowners an average of $1,877 per year. For example, if your home is assessed at $800,000 but comparable sales show a market value of $700,000, reducing your assessed value by $100,000 would save approximately $1,190 annually ($100,000 × 1.19%). These savings continue each year under Proposition 13 protections. Even a $50,000 reduction would save about $595 per year. Given San Diego County's high property values and tax rates, the potential savings make appealing worthwhile if you have evidence of overassessment.

What evidence do I need for a successful San Diego County property tax appeal?

The strongest evidence is recent comparable sales data showing that similar properties in your neighborhood sold for less than your assessed value. The San Diego County Assessor's Office maintains sales records at 1600 Pacific Highway, Room 103, or you can obtain this information from a local real estate agent at no cost. Also provide photographs documenting your property's condition, defects, or damage that affect value. Include contractor estimates or repair bids for needed work. A professional appraisal is helpful but not required. For income-producing properties, provide documentation of income and expenses. Focus on sales of comparable properties that occurred close to the January 1 assessment date, as this is the valuation date the Board will consider.

Can I get a refund if my San Diego County property tax appeal is successful?

Yes, if your appeal is successful and you checked 'yes' for claim for refund on your Assessment Appeal Application, the San Diego County Auditor will automatically process a refund of any overpaid taxes. However, be aware that checking 'yes' affects your timeline for filing a Superior Court action if you disagree with the Assessment Appeals Board decision, you must file within six months instead of the normal timeline. Because many appeals are not resolved before the December 10 and April 10 tax payment deadlines, you must still pay your property taxes on time to avoid penalties. If both installments are paid before receiving a corrected tax bill, the overpayment will be refunded once your appeal is resolved. Appeals must be decided within two years of filing.

Does San Diego County offer an informal review process before a formal property tax appeal?

Yes, San Diego County strongly encourages property owners to contact the Assessor's Office at (858) 505-6262 before filing a formal appeal. During this informal review, Assessor representatives will explain the basis for your assessment and review any information you provide about your property's value. If the Assessor discovers an error in the assessment, they can correct it without requiring you to file a formal appeal, saving time and effort. Many assessment issues are resolved at this stage. The informal review is free and does not prevent you from filing a formal appeal with the Assessment Appeals Board if you remain unsatisfied with the result. This two-step process benefits homeowners by providing an opportunity for quick resolution before proceeding to the formal hearing process.

Official Resources

San Diego County Assessor/Recorder/County Clerk Official Website →

Official Assessor website with property information, exemption applications, assessment notices, and parcel search tools.

San Diego County Assessment Appeals Information →

Official property tax assessment appeals page with forms, filing instructions, hearing schedules, and step-by-step appeal guide.

California State Board of Equalization Property Tax Information →

State-level property tax resources including assessment appeal guidelines, exemption information, and state appeal procedures.

San Diego County Property Tax Payment Portal →

San Diego County Treasurer-Tax Collector website for viewing and paying property tax bills online and checking payment status.

For state-wide appeal information including California's assessment ratio and deadlines, see our California Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More California Counties

Alameda County (Oakland)Butte County (Chico)Contra Costa County (Martinez)El Dorado County (Placerville)Fresno County (Fresno)Imperial County (El Centro)

← All California property tax appeal info

Sources: https://www.sandiegocounty.gov/content/sdc/cob/aab.html | https://www.sdarcc.gov | https://www.countynewscenter.com/filing-period-for-property-tax-assessment-appeals-opens-july-2/ | https://www.ownwell.com/trends/california/san-diego-county | https://www.sdarcc.gov/dvets/ | https://worldpopulationreview.com/us-counties/california/san-diego-county

Last verified: 2026-07-24