California County Assessor Search, 2026 Property Values, APNs & Tax Records
A California assessor property search starts with the county where the real estate is located. California has 58 county assessors, and ordinary residential parcel records are maintained locally rather than through one statewide address-search database.
Use this guide to find the correct assessor, search an APN or street address, understand Proposition 13 and Proposition 8 values, check the exact 2026 assessment-appeal deadline for all 58 counties, locate the Tax Collector, review exemptions, and understand what happens after a purchase or new construction.
The 2026 Regular Assessment Appeal Window Is Open Right Now
California’s regular 2026 assessment-appeal filing period began July 2, 2026. Every county is currently inside its regular filing period.
The ending date is not identical statewide. Counties that mailed the required secured-roll assessment notices by August 1 use a September 15 deadline. The other counties use November 30.
The State Board of Equalization published the exact 2026 deadline for every California county on June 2, 2026. The searchable county finder below builds those official dates directly into this page.
15 11 COUNTIES
California Assessor vs Auditor-Controller vs Tax Collector vs Appeals Board
County Assessor
- Assessor Parcel Number
- Ownership on assessment roll
- Taxable value
- Base-year value
- Prop. 8 decline in value
- Homeowners’ Exemption
- Disabled Veterans’ Exemption
- Prop. 19 claims
Auditor-Controller
- Extends tax rates
- Calculates amount due
- Applies taxing-agency rates
- Tax apportionment
- Roll calculations
Tax Collector
- Annual tax bill
- Online payment
- Paid/unpaid status
- Delinquent tax
- Penalty amounts
- Tax-defaulted property
- Tax sale information
Clerk / Appeals Board
- BOE-305-AH filing
- Regular-roll appeals
- Supplemental appeals
- Hearing scheduling
- Evidence exchange
- Appeals-board decision
Choose Your California Property Task
California Property Assessor Guide
Find Your California County Assessor Office
Search your county below. Each card shows the regular 2026 assessment-appeal deadline certified to the California State Board of Equalization.
How to Search California Assessor Property Records
California Property Record Decoder
| Field | Meaning | Best use |
|---|---|---|
| APN | Assessor Parcel Number assigned to the tax parcel. | Best identifier for assessor, GIS and tax research. |
| Situs Address | Physical location of the property. | Do not confuse it with owner’s mailing address. |
| Owner | Ownership reflected on the assessment roll. | Use recorded deed for title-sensitive decisions. |
| Base Year Value | Prop. 13 value generally established at change of ownership or new construction. | Starting point for factored assessed value. |
| Factored Base Year Value | Base-year value increased by applicable annual inflation factors, generally no more than 2% yearly. | Compare with current market value. |
| Prop. 8 Value | Temporary market-value assessment below the factored base-year value. | Can rise more than 2% while still below the Prop. 13 ceiling. |
| Land | Assessed value allocated to land. | Review lot size and land-related appraisal changes. |
| Improvements | Assessed value attributed to structures and taxable improvements. | Check construction, additions and building characteristics. |
| Exemptions | Qualifying reductions such as Homeowners’ or Disabled Veterans’ Exemption. | Verify the correct exemption was enrolled. |
| Tax Rate Area | Geographic combination of taxing agencies serving the property. | Helps explain why nearby parcels can have different total bills. |
How Proposition 13 Works for the 2026 Assessment Roll
Proposition 8: When Market Value Falls Below the Prop. 13 Value
If a property’s January 1 market value falls below its factored Proposition 13 base-year value, California law permits a temporary reduction to the lower market value.
California Proposition 19 Property Tax Rules
Base-year transfer for age 55+, severe disability or disaster victims
Parent-child / grandparent-grandchild transfer
How to Appeal a California 2026 Property Assessment
Evidence checklist
- Comparable sales near Jan. 1, 2026
- Recent arm’s-length purchase evidence
- Independent appraisal
- Incorrect building area
- Incorrect lot size
- Property-condition photographs
- Repair estimates
- Damage or demolition evidence
- Incorrect property classification
- Requested January 1 market value
How California Property Tax Is Calculated
California Property Tax Due Dates
California Supplemental Property Tax Bills
When real property changes ownership or qualifying new construction is completed, the Assessor can establish a new value as of the event date and place a supplemental assessment on the roll.
California Homeowners’ Property Tax Exemption
California Disabled Veterans’ Property Tax Exemption — 2026
Qualifying veterans with a 100% service-connected disability rating, or compensation at the 100% rate because of unemployability, can receive a substantially larger principal-residence exemption. Certain unmarried surviving spouses can also qualify.
California Business Personal Property Statement
California businesses with taxable business personal property may have to file a Business Property Statement with the county Assessor.
California Deeds, Liens & Recorded Property Documents
County assessor records identify property for taxation, but the actual recorded deed is normally maintained by the county Recorder or Clerk-Recorder.
California Assessor Search Problems & Fixes
| Problem | Best fix | Office |
|---|---|---|
| Cannot find a statewide address search | California property searches are county-based. Use the 58-county directory. | Assessor |
| Owner name is not searchable | Try APN or situs address; public-search policies differ by county. | Assessor |
| Bought home but assessor still shows seller | Check recorded deed and ask county about ownership-processing timing. | Recorder + Assessor |
| Tax jumped after purchase | Check change-in-ownership reassessment and supplemental tax. | Assessor |
| Value increased 2% | The 2026 Proposition 13 inflation factor is 2%. | Assessor |
| Prop. 8 value increased more than 2% | Temporary market-value assessments can recover by more than 2% until the Prop. 13 ceiling is reached. | Assessor |
| Need exact 2026 appeal deadline | Use the county finder: September 15 or November 30. | Clerk of Board |
| Need the amount currently owed | Use the county Tax Collector, not the Assessor. | Tax Collector |
| Need exact boundary | Do not rely solely on assessor GIS; obtain survey/recorded map evidence. | Recorder / Surveyor |
| Inherited parent’s house | Review Proposition 19 before assuming the prior taxable value transfers. | Assessor |
California County Assessor Map
The correct assessor is determined by the county in which the property is physically located. Large metro regions can span multiple counties, so verify the county before searching a parcel or paying tax.
California Property Assessor Action Center
California Assessor Property Search FAQs
1. Is there a statewide California assessor property search?
No. Ordinary residential and commercial parcel records are maintained by California’s 58 county assessors. Use the State Board of Equalization county directory to identify the correct assessor, then use that county’s official parcel or property-search system.
2. How do I search a California property by APN?
Identify the county where the parcel is located, open the county assessor’s official property-search or GIS portal and enter the Assessor Parcel Number. APN is usually the most reliable identifier because owner-name search availability differs among counties.
3. What is California’s Proposition 13 inflation factor for 2026?
The State Board of Equalization directed county assessors to use a 1.02 inflation factor for the 2026 assessment roll, meaning the annual factored base-year-value adjustment is 2% where the ordinary Proposition 13 inflation rule applies.
4. What is the California property tax rate?
Proposition 13 generally limits the basic ad valorem real-property tax to 1% of taxable assessed value, but voter-approved debt and direct levies such as special assessments, parcel taxes or Mello-Roos charges can make the total bill higher.
5. When is the California 2026 property assessment appeal deadline?
The regular 2026 filing period began July 2. Depending on the county, the deadline is either September 15 or November 30, 2026. Alameda, Alpine, Inyo, Kings, Mono, Placer, San Francisco, San Luis Obispo, Santa Clara, Sierra and Ventura use September 15; the other counties use November 30.
6. What is a Proposition 8 decline-in-value assessment?
Proposition 8 allows a temporary reduction when a property’s January 1 market value is below its factored Proposition 13 base-year value. The assessor reviews the reduced value annually, and it can later increase by more than 2% as market value recovers, provided it does not exceed the factored base-year-value ceiling.
7. How much is the California Homeowners’ Exemption?
The Homeowners’ Exemption reduces taxable assessed value by up to $7,000 for a qualifying principal residence. It is a reduction in assessed value, not a $7,000 reduction in the tax bill.
8. What are the 2026 California Disabled Veterans’ Exemption amounts?
For the 2026 lien date, the basic exemption is $180,671. The low-income exemption is $271,009, with a 2026 household income limit of $81,131 for qualifying low-income claimants.
9. When are California 2026–27 property taxes due?
The first secured installment is due November 1, 2026 and becomes delinquent after December 10. The second installment is due February 1, 2027 and ordinarily becomes delinquent after April 10, subject to California’s next-business-day rule when a statutory date falls on a weekend or legal holiday.
10. Who handles California property tax bills and payments?
The county Assessor establishes taxable value and exemptions, but the county Tax Collector mails and collects the property-tax bill. California BOE’s county-contact directory lists both offices for all 58 counties.
Official California Property Tax Sources
CountyPropertyAppraiser.org is an independent informational website and is not affiliated with the California State Board of Equalization, State Controller’s Office, any California county Assessor, Auditor-Controller, Treasurer-Tax Collector, Clerk-Recorder, assessment appeals board or other government agency.
County parcel portals, ownership-search policies, assessed values, direct levies, payment-processing fees, exemption status and local procedures can change. Use the official county office for live property records, appeal filing, tax payment and recorded-document requests.
Editorial verification date: August 12, 2026.
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