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California · County guide

Tuolumne County, California property tax appeals

A Tuolumne County property tax appeal starts with the Tuolumne County Board of Equalization (Board of Supervisors). The next deadline is Nov 30, 2026 for the Tuolumne County Board of Equalization (Board of Supervisors).

This season

Next deadline
Nov 30, 2026
Open now
Tuolumne County Board of Equalization (Board of Supervisors)

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

Check a Tuolumne County home for free

Here the check uses your own figures: you enter the assessed value from your notice or tax bill and the year you bought. We compare how much it has grown with the house price index for your area and show the numbers as your figures. You decide and file yourself.

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Reduced my assessment by $112,000!

I couldn’t believe the difference. My property assessment was reduced by $112,000. I’m extremely happy with the outcome!

Spencer CaldwellHomeowner

A $106,300 reduction

We had no idea there was this much room between our original assessment and the final number. Very happy with the outcome.

Megan HollisHomeowner
Office address
Tuolumne County Administration Bldg., 2 S. Green Street, Sonora, CA 95370 · 209-533-5521
Our coverage
Free check available
  • Independent guide — not affiliated with Tuolumne 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 Tuolumne County property tax appeal?

Who hears a Tuolumne County appeal?

One stage. We are not affiliated with this office.

Where is the Tuolumne County office?

Tuolumne County Board of Equalization (Board of Supervisors)[1]

Address
Tuolumne County Administration Bldg., 2 S. Green Street, Sonora, CA 95370
Hours
Mon-Fri 8:00 a.m.-5:00 p.m.

Assessor[2]

Tuolumne County Assessor

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

Which Tuolumne County filing windows are coming up?

Tuolumne County filing windows
ClosesAreaWho hears itStatus
Nov 30, 2026CountywideTuolumne County Board of Equalization (Board of Supervisors) · Official source · Last checked Sep 29, 2026Open now

When were past Tuolumne County deadlines?

Past Tuolumne County filing windows
Tax yearWindowOffice
2025Closed December 1, 2025Tuolumne County Board of Equalization (Board of Supervisors)
2024Closed December 2, 2024Tuolumne County Board of Equalization (Board of Supervisors)
2023Closed November 30, 2023Tuolumne County Board of Equalization (Board of Supervisors)

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

The soonest deadline we list: Tuolumne County, Tuolumne County Board of Equalization (Board of Supervisors) — Closes November 30, 2026.

Deadline detailTuolumne County Board of Equalization (Board of Supervisors) · Filing period
Tuolumne County's regular appeal filing period is July 2 to November 30.[1]
Deadline detailTuolumne County Board of Equalization (Board of Supervisors) · Supplemental period
Tuolumne County appeals of supplemental assessments must be filed within 60 days of the supplemental tax bill's mailing.[2]

Who decides a property tax appeal in Tuolumne County?

Tuolumne County Board of Equalization (Board of Supervisors): A Tuolumne County Board of Equalization decision is final and cannot be reheard; either side may then bring a timely action in superior court. Tuolumne County Board of Equalization (Board of Supervisors): In Tuolumne County you appeal an assessment to the Board of Equalization by filing an Application for Changed Assessment, one per parcel.

Appeal stepsTuolumne County Board of Equalization (Board of Supervisors)
A Tuolumne County Board of Equalization decision is final and cannot be reheard; either side may then bring a timely action in superior court.[3]
What the appeal is calledTuolumne County Board of Equalization (Board of Supervisors)
In Tuolumne County you appeal an assessment to the Board of Equalization by filing an Application for Changed Assessment, one per parcel.[1]

How do I file a property tax appeal in Tuolumne County?

Tuolumne County Board of Equalization (Board of Supervisors): In Tuolumne County you mail the completed original forms to the Board Clerk, Board of Supervisors, 2 S. Green St., Sonora. Tuolumne County Board of Equalization (Board of Supervisors): Tuolumne County posts the Application for Changed Assessment, a withdrawal form, the Assessor's Property Review Request and an Exchange of Information form.

How to fileTuolumne County Board of Equalization (Board of Supervisors)
In Tuolumne County you mail the completed original forms to the Board Clerk, Board of Supervisors, 2 S. Green St., Sonora.[1]
FormsTuolumne County Board of Equalization (Board of Supervisors)
Tuolumne County posts the Application for Changed Assessment, a withdrawal form, the Assessor's Property Review Request and an Exchange of Information form.[1]
Who may fileTuolumne County Board of Equalization (Board of Supervisors)
In Tuolumne County you do not need a representative; an agent other than a California attorney or listed relative needs the owner's written authorization on or attached to the application.[3]
Informal reviewTuolumne County Board of Equalization (Board of Supervisors)
In Tuolumne County you can ask the Assessor for a decline-in-value review by phone or on the Request for Review Application.[4]
HearingsTuolumne County Board of Equalization (Board of Supervisors)
After Tuolumne County accepts an application, the hearing date is mailed at least 45 days ahead; the board has two years from filing to decide.[1]

Upcoming appeal deadlines in every county we track

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

What evidence can I use in Tuolumne County?

Tuolumne County Board of Equalization (Board of Supervisors): Tuolumne County's application instructions ask for comparable sales, cost and income data to support the owner's opinion of value. Tuolumne County Board of Equalization (Board of Supervisors) · Exchange: In Tuolumne County, if an exchange of information is requested, evidence at the hearing is limited to matters exchanged unless the other side consents.

Evidence acceptedTuolumne County Board of Equalization (Board of Supervisors)
Tuolumne County's application instructions ask for comparable sales, cost and income data to support the owner's opinion of value.[3]
Evidence ruleTuolumne County Board of Equalization (Board of Supervisors) · Exchange
In Tuolumne County, if an exchange of information is requested, evidence at the hearing is limited to matters exchanged unless the other side consents.[5]
Evidence ruleTuolumne County Board of Equalization (Board of Supervisors) · Hearing only
Tuolumne County applicants present evidence at the hearing and should not attach hearing evidence to the application.[3]

Can my assessment go up if I appeal in Tuolumne County?

Tuolumne County Board of Equalization (Board of Supervisors): Tuolumne County's appeal instructions say the board can increase, decrease or leave an assessment unchanged based on the hearing evidence.

Can the value go up?Tuolumne County Board of Equalization (Board of Supervisors)
Tuolumne County's appeal instructions say the board can increase, decrease or leave an assessment unchanged based on the hearing evidence.[3]

Which exemptions can lower my bill without an appeal?

A Tuolumne County owner who occupies the home as a principal residence on January 1 can apply for the homeowner's exemption, which cuts assessed value by up to $7,000. In Tuolumne County the full homeowner's exemption requires filing by 5 p.m. February 15; 80% is available if filed by December 10.

Homeowner exemption
A Tuolumne County owner who occupies the home as a principal residence on January 1 can apply for the homeowner's exemption, which cuts assessed value by up to $7,000.[6]
Homeowner deadline
In Tuolumne County the full homeowner's exemption requires filing by 5 p.m. February 15; 80% is available if filed by December 10.[6]

What do Tuolumne 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 Tuolumne County property taxes?

Tax rate used: 1.074% of assessed value (county average, fiscal 2024-25).

How much could a lower assessment save on Tuolumne County property taxes?
ExampleTax saved
$10,000 less assessed value$107 a year
10% less on a home assessed at $433,200 (the Census median home value)$465 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 Tuolumne County pay in property tax?

The median owner-occupied home in Tuolumne County was worth $433,200, and the median property tax its owners paid was $2,864 a year, according to the Census Bureau's American Community Survey.

Median home value
$433,200
Margin of error ±$14,328.
Median property tax paid per year
$2,864
Margin of error ±$147.
Median tax as a share of median value
0.66%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
16,771
Margin of error ±581.

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.

Median home value: Tuolumne County compared

  1. Tuolumne County$433,200
  2. Typical California county$481,100
  3. Typical US county$185,300

Typical California county $481,100; Tuolumne County $433,200; 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: Tuolumne County compared

  1. Tuolumne County$2,864
  2. Typical California county$3,294
  3. Typical US county$1,619

Typical California county $3,294 a year; Tuolumne County $2,864 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.

Tuolumne County filing windows on a calendar

  1. Tuolumne County Board of Equalization (Board of Supervisors)Nov 30, 2026 · Open now

The dashed line marks today.

Tuolumne County Board of Equalization (Board of Supervisors): 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 Tuolumne County?

Tuolumne County reappraises property when it is bought, changes ownership or has new construction; otherwise most assessed values rise no more than 2% a year. Supplemental: Tuolumne County issues a supplemental assessment and tax bill after a change in ownership or completed new construction; an event from January 1 to May 31 produces two supplemental assessments.

Reassessment cycle
Tuolumne County reappraises property when it is bought, changes ownership or has new construction; otherwise most assessed values rise no more than 2% a year.[7]
Reassessment cycleSupplemental
Tuolumne County issues a supplemental assessment and tax bill after a change in ownership or completed new construction; an event from January 1 to May 31 produces two supplemental assessments.[7]
Valuation date
Tuolumne County regular assessment appeals concern the value as of January 1 of the current year.[3]
Level of assessmentCalamity
A Tuolumne County property damaged by more than $10,000 in a calamity such as a fire may get a reduced assessment until it is restored.[2]
Level of assessmentDecline in value
The Tuolumne County Assessor temporarily lowers the assessed value when the January 1 market value is below it, and reviews reduced values every year.[2]

What do home values and property taxes look like in Tuolumne County?

Tuolumne County's secured roll has about 38,000 assessments of taxable land and improvements; the unsecured roll has about 4,000. Tuolumne County's base property tax rate is 1% of assessed value plus voter-approved bonds and fees.

Local statistic
Tuolumne County's secured roll has about 38,000 assessments of taxable land and improvements; the unsecured roll has about 4,000.[7]
Property tax rate
Tuolumne County's base property tax rate is 1% of assessed value plus voter-approved bonds and fees.[7]

Homes in Tuolumne 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
1980
All housing units, owned and rented
Single-family houses, detached or attached
82%
of 31,589 housing units
Owned homes with a mortgage or similar loan
58%
of 16,771 owner-occupied homes

Home values reported by owners

  1. Less than $50,0004%
  2. $50,000 to $99,9992%
  3. $100,000 to $199,9995%
  4. $200,000 to $299,99910%
  5. $300,000 to $399,99923%
  6. $400,000 to $499,99921%
  7. $500,000 to $749,99925%
  8. $750,000 to $999,9997%
  9. $1,000,000 to $1,999,9992%
  10. $2,000,000 or more2%

Home values reported by owners in Tuolumne County: Less than $50,000 4%; $50,000 to $99,999 2%; $100,000 to $199,999 5%; $200,000 to $299,999 10%; $300,000 to $399,999 23%; $400,000 to $499,999 21%; $500,000 to $749,999 25%; $750,000 to $999,999 7%; $1,000,000 to $1,999,999 2%; $2,000,000 or more 2%.

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 taxes3%
  2. Less than $8008%
  3. $800 to $1,49910%
  4. $1,500 to $1,99913%
  5. $2,000 to $2,99921%
  6. $3,000 or more46%

Property taxes owners pay a year in Tuolumne County: No real estate taxes 3%; Less than $800 8%; $800 to $1,499 10%; $1,500 to $1,999 13%; $2,000 to $2,999 21%; $3,000 or more 46%.

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 Tuolumne County property tax appeals

When is the Tuolumne County property tax appeal deadline?

The Tuolumne County Board of Equalization (Board of Supervisors) window closes November 30, 2026.[8][9]

Where do I file an assessment appeal in Tuolumne County?

In Tuolumne County you mail the completed original forms to the Board Clerk, Board of Supervisors, 2 S. Green St., Sonora.[1]

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

Tuolumne County's appeal instructions say the board can increase, decrease or leave an assessment unchanged based on the hearing evidence.[3]

What other rules apply in Tuolumne County?

Tuolumne County Board of Equalization (Board of Supervisors): Filing an appeal in Tuolumne County does not excuse paying the property taxes by the tax-bill due dates; any reduction is refunded proportionately.

Paying the tax while you appealTuolumne County Board of Equalization (Board of Supervisors)
Filing an appeal in Tuolumne County does not excuse paying the property taxes by the tax-bill due dates; any reduction is refunded proportionately.[3]

Which details are not confirmed yet?

We show a fact only after a person has checked it against the official source. These are still being checked. Until then, ask the Tuolumne County Board of Equalization (Board of Supervisors):

  • When a filing counts as on time
  • Filing fee

Property tax guides for Tuolumne County homeowners

Counties next to Tuolumne County

California property tax appeals: all counties

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Where do these facts come from?

  1. [1]Property Tax Assessment Appeals | Tuolumne County, CA - Official WebsiteOfficial guide or FAQ · last checked Sep 29, 2026
  2. [2]Decline in Value / Assessment Appeals | Tuolumne County, CA - Official WebsiteOfficial guide or FAQ · last checked Sep 30, 2026
  3. [3]Assessment Appeal Application BOE-305-AH REV. 11 (05-22), Tuolumne CountyOfficial notice, form, calendar or rules · last checked Sep 30, 2026
  4. [4]Decline in Value / Assessment Appeals | Tuolumne County, CA - Official WebsiteOfficial guide or FAQ · last checked Sep 27, 2026
  5. [5]Exchange of Information for Application for Changed Assessment (BOE-305-X), Tuolumne CountyOfficial notice, form, calendar or rules · last checked Sep 30, 2026
  6. [6]Property Tax Exemptions | Tuolumne County, CA - Official WebsiteOfficial guide or FAQ · last checked Sep 30, 2026
  7. [7]Real Property Appraisal | Tuolumne County, CA - Official WebsiteOfficial guide or FAQ · last checked Sep 30, 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.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Tuolumne County, California
  14. 14.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — Tuolumne County, California
  15. 15.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Tuolumne County, California

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

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