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California · County guide

San Joaquin County, California property tax appeals

A San Joaquin County property tax appeal starts with the San Joaquin County Assessment Appeals Board. The next deadline is Nov 30, 2026 for the San Joaquin County Assessment Appeals Board. The filing fee is $30 per application.

This season

Next deadline
Nov 30, 2026
Open now
San Joaquin County Assessment Appeals Board

Opens Jul 2, 2026Closes Nov 30, 2026

Source: Letter To Assessors No. 2026/023: County Assessment Appeals Filing Period for 2026 (BOE, June 2, 2026)Last checked

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Filing fee
$30 per application
Where to file first
San Joaquin County Assessment Appeals Board
Office address
44 North San Joaquin Street, Sixth Floor, Suite 627, Stockton, CA 95202 · (209) 468-2350
Our coverage
Free check available
  • Independent guide — not affiliated with San Joaquin County or any government agency.
Last updated
October 1, 2026
Sources last checked
October 1, 2026
Status
Verified guide

How we verify facts

When and where do I file a San Joaquin County property tax appeal?

Who hears a San Joaquin County appeal?

One stage. We are not affiliated with this office.

Who hears it: San Joaquin County Assessment Appeals Board

Filing: appeal

Open now

Where is the San Joaquin County office?

San Joaquin County Assessment Appeals Board[1]

Address
44 North San Joaquin Street, Sixth Floor, Suite 627, Stockton, CA 95202

Assessor[7]

Office of the Assessor

Address
44 North San Joaquin Street, Second Floor Suite 230, Stockton, CA 95202
Fax
(209) 468-0422
Hours
8:30 a.m.-4:30 p.m. weekdays, except holidays

We are not affiliated with this office. Hours can change, so call before you visit.

Which San Joaquin County filing windows are coming up?

San Joaquin County filing windows
ClosesAreaWho hears itStatus
Nov 30, 2026CountywideSan Joaquin County Assessment Appeals Board · Official source · Last checked Sep 29, 2026Open now

When were past San Joaquin County deadlines?

Past San Joaquin County filing windows
Tax yearWindowOffice
2025Closed December 1, 2025San Joaquin County Assessment Appeals Board
2024Closed December 2, 2024San Joaquin County Assessment Appeals Board
2023Closed November 30, 2023San Joaquin County Assessment Appeals Board

When is the deadline to appeal a property tax assessment in San Joaquin County?

The soonest deadline we list: San Joaquin County, San Joaquin County Assessment Appeals Board — Closes November 30, 2026.

When a filing counts as on timeSan Joaquin County Assessment Appeals Board
San Joaquin County's 2026 regular filing period runs July 2 to 5:00 p.m. November 30; mailed applications must be postmarked between July 2 and November 30.[1]
Deadline detailSan Joaquin County Assessment Appeals Board · Filing period
San Joaquin County's 2026 regular appeal filing period is July 2 through 5:00 p.m. November 30, 2026; mailed applications must be postmarked by November 30.[1]

Who decides a property tax appeal in San Joaquin County?

The San Joaquin County Assessment Appeals Board's decision is final and not reheard; the owner or the San Joaquin County Assessor may seek review in superior court. San Joaquin County Assessment Appeals Board: In San Joaquin County the filing is an assessment appeal on the Assessment Appeal Application (BOE-305-AH), heard by the San Joaquin County Assessment Appeals Board.

Appeal stepsSan Joaquin County Assessment Appeals Board
The San Joaquin County Assessment Appeals Board's decision is final and not reheard; the owner or the San Joaquin County Assessor may seek review in superior court.[2]
What the appeal is calledSan Joaquin County Assessment Appeals Board
In San Joaquin County the filing is an assessment appeal on the Assessment Appeal Application (BOE-305-AH), heard by the San Joaquin County Assessment Appeals Board.[2]

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

San Joaquin County Assessment Appeals Board: San Joaquin County appeal applications are returned to the Clerk of the Board, 44 N. San Joaquin St., Suite 627, Stockton, CA 95202 (209-468-2350). San Joaquin County Assessment Appeals Board: San Joaquin County publishes its own copy of the Assessment Appeal Application (BOE-305-AH) with filing instructions.

How to fileSan Joaquin County Assessment Appeals Board
San Joaquin County appeal applications are returned to the Clerk of the Board, 44 N. San Joaquin St., Suite 627, Stockton, CA 95202 (209-468-2350).[2]
FormsSan Joaquin County Assessment Appeals Board
San Joaquin County publishes its own copy of the Assessment Appeal Application (BOE-305-AH) with filing instructions.[2]
Filing feeSan Joaquin County Assessment Appeals Board
San Joaquin County charges a $30 non-refundable processing fee per application; owner-occupied single-family homes assessed at $150,000 or less are exempt.[1]
Who may fileSan Joaquin County Assessment Appeals Board
On the San Joaquin County application, an agent must be authorized in writing unless the agent is a California attorney or the owner's spouse, child, parent or registered domestic partner.[2]
Informal reviewSan Joaquin County Assessment Appeals Board
In San Joaquin County the Assessor takes informal decline-in-value review requests for the current year from July 2 to September 15; you can still file a formal appeal through November 30.[3]
HearingsSan Joaquin County Assessment Appeals Board · Schedule
San Joaquin County posts its Assessment Appeals Board hearing agenda online; the October 1, 2026 agenda lists cases scheduled for hearing at 9:00 am.[4]

Upcoming appeal deadlines in every county we track

What evidence counts in San Joaquin County, and can the value go up?

What evidence can I use in San Joaquin County?

San Joaquin County Assessment Appeals Board: San Joaquin County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value. San Joaquin County Assessment Appeals Board · Exchange: Before a San Joaquin County hearing, the owner may ask for an exchange of information with the Assessor; above $100,000 of assessed value the Assessor may start one.

Evidence acceptedSan Joaquin County Assessment Appeals Board
San Joaquin County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value.[2]
Evidence ruleSan Joaquin County Assessment Appeals Board · Exchange
Before a San Joaquin County hearing, the owner may ask for an exchange of information with the Assessor; above $100,000 of assessed value the Assessor may start one.[2]

Can my assessment go up if I appeal in San Joaquin County?

San Joaquin County Assessment Appeals Board: San Joaquin County's appeal instructions say the San Joaquin County Assessment Appeals Board can raise, lower or keep the assessment, depending on the hearing evidence.

Can the value go up?San Joaquin County Assessment Appeals Board
San Joaquin County's appeal instructions say the San Joaquin County Assessment Appeals Board can raise, lower or keep the assessment, depending on the hearing evidence.[2]

Which exemptions can lower my bill without an appeal?

San Joaquin County homeowners who live in their home can get up to $7,000 off the assessed value, about $70 a year in tax.

Homeowner exemption
San Joaquin County homeowners who live in their home can get up to $7,000 off the assessed value, about $70 a year in tax.[5]

What do San Joaquin County property taxes and assessments look like?

Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.

How much could a lower assessment save on San Joaquin County property taxes?

Tax rate used: 1.122% of assessed value (county average, fiscal 2024-25).

How much could a lower assessment save on San Joaquin County property taxes?
ExampleTax saved
$10,000 less assessed value$112 a year
10% less on a home assessed at $205,566 (the county's 25th percentile)$231 a year
10% less on a home assessed at $357,697 (the county's median)$401 a year
10% less on a home assessed at $537,344 (the county's 75th percentile)$603 a year

These are examples: the tax rate times a lower assessed value. Exemptions, credits, caps and phase-ins can make the real change smaller. This is not a prediction for any home. Rate source: BOE Annual Report 2024-25, Table 14: average tax rate by county (Property Tax Allocations, BOE Open Data Portal).

What do homeowners in San Joaquin County pay in property tax?

The median owner-occupied home in San Joaquin County was worth $530,700, and the median property tax its owners paid was $3,960 a year, according to the Census Bureau's American Community Survey.

Median home value
$530,700
Margin of error ±$6,613.
Median property tax paid per year
$3,960
Margin of error ±$68.
Median tax as a share of median value
0.75%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
152,030
Margin of error ±2,143.

These are survey estimates of what owners reported about their own homes. They are not assessed values, not tax rates, and not an opinion of what any home is worth.

They cannot tell you whether your own assessment is fair. That takes a comparison with similar homes, which we offer only in counties we have researched.

From the county's assessment and appeal records

Homes in the county's assessment records
207,766
Median assessed value
$357,697
Middle half of assessed values
$205,566 to $537,344

Source: The county's open assessment data, aggregated by us (tax year 2026 final values). Our calculation from public records; not an opinion of any home's value.

How San Joaquin County home assessments are spread

Assessed values of 207,766 homes in the property classes our free check covers (CND, MH, R24, R5, SFR), tax year 2026 final values. Half are between $205,566 and $537,344; the median is $357,697. The last bar holds everything above it.Source: Assessment records from the county's open data (tax year 2026 final values), retrieved Sep 27, 2026; our calculation.

Median home value: San Joaquin County compared

  1. San Joaquin County$530,700
  2. Typical California county$481,100
  3. Typical US county$185,300

San Joaquin County $530,700; Typical California county $481,100; Typical US county $185,300

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 58 in California and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077.

Median property tax paid: San Joaquin County compared

  1. San Joaquin County$3,960
  2. Typical California county$3,294
  3. Typical US county$1,619

San Joaquin County $3,960 a year; Typical California county $3,294 a year; Typical US county $1,619 a year

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 58 in California and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25103.

Median home assessment by map book

  1. Map book 258$839,395
  2. Map book 251$820,100
  3. Map book 262$785,354
  4. Map book 253$758,167
  5. Map book 003$743,143
  6. Map book 210$690,471
  7. Map book 268$672,550
  8. Map book 220$664,100
  9. Map book 165$120,054
  10. Map book 151$116,349
  11. Map book 167$114,853
  12. Map book 147$110,974
  13. Map book 155$107,953
  14. Map book 169$103,068
  15. Map book 802$90,273
  16. Map book 801$75,920

The 8 highest and 8 lowest of 177.

Median assessed value by map book: highest Map book 258 ($839,395), lowest Map book 801 ($75,920).

Median assessed value of homes in the property classes our free check covers (CND, MH, R24, R5, SFR) for each map book with at least 50 such homes, tax year 2026 final values.Source: Assessment records from the county's open data (tax year 2026 final values), retrieved Sep 27, 2026; our calculation.

San Joaquin County filing windows on a calendar

  1. San Joaquin County Assessment Appeals BoardNov 30, 2026 · Open now

The dashed line marks today.

San Joaquin County Assessment Appeals Board: Nov 30, 2026

Each bar is a filing window from its opening day to its last day. Forecasts show the expected closing range and are not official dates.Source: the official calendars and rules cited in the sources list below.

How often is property reassessed in San Joaquin County?

Under Prop 13, San Joaquin County reassesses property at market value when it changes ownership or new construction is completed. San Joaquin County sets each coming year's assessment as of January 1, the lien date.

Reassessment cycle
Under Prop 13, San Joaquin County reassesses property at market value when it changes ownership or new construction is completed.[6]
Valuation date
San Joaquin County sets each coming year's assessment as of January 1, the lien date.[3]
Level of assessmentDecline in value
San Joaquin County grants a temporary Prop 8 reduction when a home's January 1 market value is below its Prop 13 taxable value.[3]

Homes in San Joaquin County

From the Census Bureau's American Community Survey: how old the homes are, what kind they are, what owners say they are worth and the property taxes they pay. These figures describe all homes together, not any one home.

Median year built
1984
All housing units, owned and rented
Single-family houses, detached or attached
80%
of 260,151 housing units
Owned homes with a mortgage or similar loan
70%
of 152,030 owner-occupied homes

Home values reported by owners

  1. Less than $50,0003%
  2. $50,000 to $99,9992%
  3. $100,000 to $199,9992%
  4. $200,000 to $299,9995%
  5. $300,000 to $399,99913%
  6. $400,000 to $499,99920%
  7. $500,000 to $749,99933%
  8. $750,000 to $999,99914%
  9. $1,000,000 to $1,999,9996%
  10. $2,000,000 or more1%

Home values reported by owners in San Joaquin County: Less than $50,000 3%; $50,000 to $99,999 2%; $100,000 to $199,999 2%; $200,000 to $299,999 5%; $300,000 to $399,999 13%; $400,000 to $499,999 20%; $500,000 to $749,999 33%; $750,000 to $999,999 14%; $1,000,000 to $1,999,999 6%; $2,000,000 or more 1%.

Share of owner-occupied homes in each value range. Owners give this value in the survey; it is not the assessed value.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25075.

Property taxes owners pay a year

  1. No real estate taxes4%
  2. Less than $8005%
  3. $800 to $1,4999%
  4. $1,500 to $1,9997%
  5. $2,000 to $2,99914%
  6. $3,000 or more61%

Property taxes owners pay a year in San Joaquin County: No real estate taxes 4%; Less than $800 5%; $800 to $1,499 9%; $1,500 to $1,999 7%; $2,000 to $2,999 14%; $3,000 or more 61%.

Share of owner-occupied homes by the real estate taxes paid in a year, with or without a mortgage.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25102.

Source: U.S. Census Bureau, American Community Survey (2020–2024 5-year estimates, tables B25075, B25102, B25035, B25024 and B25081), retrieved Oct 1, 2026. Survey estimates have a margin of error.

More questions about San Joaquin County property tax appeals

When is the San Joaquin County property tax appeal deadline?

The San Joaquin County Assessment Appeals Board window closes November 30, 2026.[8][9]

Is there a fee to file a property tax appeal in San Joaquin County?

San Joaquin County charges a $30 non-refundable processing fee per application; owner-occupied single-family homes assessed at $150,000 or less are exempt.[1]

Where do I file an assessment appeal in San Joaquin County?

San Joaquin County appeal applications are returned to the Clerk of the Board, 44 N. San Joaquin St., Suite 627, Stockton, CA 95202 (209-468-2350).[2]

Can my assessed value go up if I appeal in San Joaquin County?

San Joaquin County's appeal instructions say the San Joaquin County Assessment Appeals Board can raise, lower or keep the assessment, depending on the hearing evidence.[2]

What other rules apply in San Joaquin County?

San Joaquin County Assessment Appeals Board: Filing a San Joaquin County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.

Paying the tax while you appealSan Joaquin County Assessment Appeals Board
Filing a San Joaquin County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.[2]

Property tax guides for San Joaquin County homeowners

Counties next to San Joaquin County

California property tax appeals: all counties

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Where do these facts come from?

  1. [1]Assessment Appeals | Clerk of the Board | San Joaquin CountyOfficial guide or FAQ · last checked Sep 29, 2026
  2. [2]Assessment Appeal Application (BOE-305-AH) with instructions (San Joaquin County, PDF)Official notice, form, calendar or rules · last checked Sep 29, 2026
  3. [3]Decline in Value - Homeowners | Assessor | San Joaquin CountyOfficial guide or FAQ · last checked Sep 29, 2026
  4. [4]San Joaquin County Assessment Appeals Board Agenda, Thursday, October 01, 2026 (PDF)Official guide or FAQ · last checked Oct 1, 2026
  5. [5]Tax Savings & Exemptions | San Joaquin County Assessor-Recorder-County ClerkOfficial guide or FAQ · last checked Sep 29, 2026
  6. [6]Real Property Assessment | San Joaquin County Assessor-Recorder-County ClerkOfficial guide or FAQ · last checked Sep 29, 2026
  7. [7]San Joaquin County Assessor Recorder | sjgov.orgOfficial guide or FAQ · last checked Oct 1, 2026
  8. [8]Letter To Assessors No. 2026/023: County Assessment Appeals Filing Period for 2026 (BOE, June 2, 2026)Official notice, form, calendar or rules · last checked Sep 25, 2026
  9. [9]Publication 30: Residential Property Assessment Appeals (California State Board of Equalization, February 2020)Official guide or FAQ · last checked Sep 25, 2026
  10. [10]Letter To Assessors No. 2025/020: County Assessment Appeals Filing Period for 2025 (BOE, July 7, 2025)Official notice, form, calendar or rules · last checked Oct 1, 2026
  11. [11]Letter To Assessors No. 2024/022: County Assessment Appeals Filing Period for 2024 (BOE, June 25, 2024)Official notice, form, calendar or rules · last checked Oct 1, 2026
  12. [12]Letter To Assessors No. 2023/023: County Assessment Appeals Filing Period for 2023 (BOE, June 22, 2023)Official notice, form, calendar or rules · last checked Oct 1, 2026
  13. 13.County open data: sjc assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  14. 14.County open data: sjc assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  15. 15.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — San Joaquin County, California
  16. 16.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — San Joaquin County, California
  17. 17.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — San Joaquin County, California

Data credits: Census ACS (public domain) · Census county adjacency (public domain)

Not affiliated with San Joaquin County or any government agency. Not legal advice. Not an appraisal.

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