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California · County guide

Trinity County, California property tax appeals

A Trinity County property tax appeal starts with the Trinity County appeals board (Clerk of the Board of Supervisors). The next deadline is Nov 30, 2026 for the Trinity County appeals board (Clerk of the Board of Supervisors).

This season

Next deadline
Nov 30, 2026
Open now
Trinity County appeals board (Clerk of the 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

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Where to file first
Trinity County appeals board (Clerk of the Board of Supervisors)
Our coverage
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  • Independent guide — not affiliated with Trinity 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 Trinity County property tax appeal?

Who hears a Trinity County appeal?

One stage. We are not affiliated with this office.

Who hears it: Trinity County appeals board (Clerk of the Board of Supervisors)

Filing: appeal

Open now

Where is the Trinity County office?

Office[4]

Trinity County Board of Supervisors (Clerk of the Board)

Address
11 Court Street, Room 230, Weaverville, CA 96093
Fax
530-623-8365

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

Which Trinity County filing windows are coming up?

Trinity County filing windows
ClosesAreaWho hears itStatus
Nov 30, 2026CountywideTrinity County appeals board (Clerk of the Board of Supervisors) · Official source · Last checked Sep 29, 2026Open now

When were past Trinity County deadlines?

Past Trinity County filing windows
Tax yearWindowOffice
2025Closed December 1, 2025Trinity County appeals board (Clerk of the Board of Supervisors)
2024Closed December 2, 2024Trinity County appeals board (Clerk of the Board of Supervisors)
2023Closed November 30, 2023Trinity County appeals board (Clerk of the Board of Supervisors)

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

The soonest deadline we list: Trinity County, Trinity County appeals board (Clerk of the Board of Supervisors) — Closes November 30, 2026.

When a filing counts as on timeTrinity County appeals board (Clerk of the Board of Supervisors)
Trinity County appeals must be postmarked by the deadline.[1]
Deadline detailTrinity County appeals board (Clerk of the Board of Supervisors) · Filing period
Trinity County's regular appeal filing period is July 2 to November 30; appeals must be postmarked by the deadline.[1]

Who decides a property tax appeal in Trinity County?

Trinity County appeals board (Clerk of the Board of Supervisors): The Trinity County Assessment Appeals Board's decision is final and not reheard; the owner or the Trinity County Assessor may seek review in superior court. Trinity County appeals board (Clerk of the Board of Supervisors): In Trinity County the formal appeal is an Assessment Appeal Application, obtained from the Clerk of the Board at (530) 623-1217.

Appeal stepsTrinity County appeals board (Clerk of the Board of Supervisors)
The Trinity County Assessment Appeals Board's decision is final and not reheard; the owner or the Trinity County Assessor may seek review in superior court.[2]
What the appeal is calledTrinity County appeals board (Clerk of the Board of Supervisors)
In Trinity County the formal appeal is an Assessment Appeal Application, obtained from the Clerk of the Board at (530) 623-1217.[1]

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

Trinity County appeals board (Clerk of the Board of Supervisors): Trinity County appeal applications come from the Clerk of the Board and must be postmarked by the November 30 deadline, even if an informal review is still open. Trinity County appeals board (Clerk of the Board of Supervisors): Trinity County publishes its own copy of the Assessment Appeal Application (BOE-305-AH) with filing instructions.

How to fileTrinity County appeals board (Clerk of the Board of Supervisors)
Trinity County appeal applications come from the Clerk of the Board and must be postmarked by the November 30 deadline, even if an informal review is still open.[1]
FormsTrinity County appeals board (Clerk of the Board of Supervisors)
Trinity County publishes its own copy of the Assessment Appeal Application (BOE-305-AH) with filing instructions.[2]
Filing feeTrinity County appeals board (Clerk of the Board of Supervisors) · Findings of fact
Written findings of fact from Trinity County's appeals board require a $100 minimum deposit at the hearing, and costs may exceed it.[2]
Who may fileTrinity County appeals board (Clerk of the Board of Supervisors)
On the Trinity 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 reviewTrinity County appeals board (Clerk of the Board of Supervisors)
In Trinity County you can send the Assessor a Request for Informal Assessment Review, postmarked no later than December 31.[1]

Upcoming appeal deadlines in every county we track

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

What evidence can I use in Trinity County?

Trinity County says the best evidence is three comparable sales as close to January 1 as possible and no later than March 31; open listings are not accepted. Trinity County appeals board (Clerk of the Board of Supervisors) · Exchange: Before a Trinity 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 accepted
Trinity County says the best evidence is three comparable sales as close to January 1 as possible and no later than March 31; open listings are not accepted.[1]
Evidence ruleTrinity County appeals board (Clerk of the Board of Supervisors) · Exchange
Before a Trinity 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 Trinity County?

Trinity County appeals board (Clerk of the Board of Supervisors): Trinity County's appeal instructions say the Trinity County Assessment Appeals Board can raise, lower or keep the assessment, depending on the hearing evidence.

Can the value go up?Trinity County appeals board (Clerk of the Board of Supervisors)
Trinity County's appeal instructions say the Trinity 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?

Trinity County's Homeowners' Exemption takes up to $7,000 off the assessed value of a home occupied as the owner's principal residence on January 1; file with the Assessor by February 15.

Homeowner exemption
Trinity County's Homeowners' Exemption takes up to $7,000 off the assessed value of a home occupied as the owner's principal residence on January 1; file with the Assessor by February 15.[3]

What do Trinity 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 Trinity County property taxes?

Tax rate used: 1.04% of assessed value (county average, fiscal 2024-25).

How much could a lower assessment save on Trinity County property taxes?
ExampleTax saved
$10,000 less assessed value$104 a year
10% less on a home assessed at $45,753 (the county's 25th percentile)$48 a year
10% less on a home assessed at $116,677 (the county's median)$121 a year
10% less on a home assessed at $223,100 (the county's 75th percentile)$232 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 Trinity County pay in property tax?

The median owner-occupied home in Trinity County was worth $325,800, and the median property tax its owners paid was $1,888 a year, according to the Census Bureau's American Community Survey.

Median home value
$325,800
Margin of error ±$23,401.
Median property tax paid per year
$1,888
Margin of error ±$274.
Median tax as a share of median value
0.58%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
4,006
Margin of error ±398.

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
12,016
Median assessed value
$116,677
Middle half of assessed values
$45,753 to $223,100

Source: The county's open assessment data, aggregated by us (tax year 2024 final values). Our calculation from public records; not an opinion of any home's value.

How Trinity County home assessments are spread

Assessed values of 12,016 homes in the property classes our free check covers (RES, 1XXX, 3XXX, 4XBX, 4XC1 and 36 more), tax year 2024 final values. Half are between $45,753 and $223,100; the median is $116,677. The last bar holds everything above it.Source: Assessment records from the county's open data (tax year 2024 final values), retrieved Sep 27, 2026; our calculation.

Median home value: Trinity County compared

  1. Trinity County$325,800
  2. Typical California county$481,100
  3. Typical US county$185,300

Typical California county $481,100; Trinity County $325,800; 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: Trinity County compared

  1. Trinity County$1,888
  2. Typical California county$3,294
  3. Typical US county$1,619

Typical California county $3,294 a year; Trinity County $1,888 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 001$179,436
  2. Map book 024$162,711
  3. Map book 008$152,091
  4. Map book 002$147,940
  5. Map book 025$134,049
  6. Map book 016$132,619
  7. Map book 010$128,661
  8. Map book 015$124,937
  9. Map book 009$120,000
  10. Map book 011$111,295
  11. Map book 007$109,251
  12. Map book 019$107,219
  13. Map book 018$102,839
  14. Map book 014$95,808
  15. Map book 022$88,779
  16. Map book 012$87,039
  17. Map book 020$80,707
  18. Map book 017$59,880
  19. Map book 004$59,235
  20. Map book 003$30,156

Median assessed value by map book: highest Map book 001 ($179,436), lowest Map book 003 ($30,156).

Median assessed value of homes in the property classes our free check covers (RES, 1XXX, 3XXX, 4XBX, 4XC1 and 36 more) for each map book with at least 50 such homes, tax year 2024 final values.Source: Assessment records from the county's open data (tax year 2024 final values), retrieved Sep 27, 2026; our calculation.

Trinity County filing windows on a calendar

  1. Trinity County appeals board (Clerk of the Board of Supervisors)Nov 30, 2026 · Open now

The dashed line marks today.

Trinity County appeals board (Clerk of the 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 Trinity County?

Trinity County's appeal application instructions explain that the base year is the year the property changed ownership or new construction was completed. Trinity County measures market value as of the January 1 lien date.

Reassessment cycle
Trinity County's appeal application instructions explain that the base year is the year the property changed ownership or new construction was completed.[2]
Valuation date
Trinity County measures market value as of the January 1 lien date.[1]
Level of assessmentDecline in value
Trinity County's Assessor may temporarily lower an assessed value that is above the market value on the January 1 lien date.[1]

Homes in Trinity 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
1977
All housing units, owned and rented
Single-family houses, detached or attached
79%
of 8,112 housing units
Owned homes with a mortgage or similar loan
38%
of 4,006 owner-occupied homes

Home values reported by owners

  1. Less than $50,0009%
  2. $50,000 to $99,9994%
  3. $100,000 to $199,9996%
  4. $200,000 to $299,99924%
  5. $300,000 to $399,99928%
  6. $400,000 to $499,99913%
  7. $500,000 to $749,9999%
  8. $750,000 to $999,9992%
  9. $1,000,000 to $1,999,9993%
  10. $2,000,000 or more4%

Home values reported by owners in Trinity County: Less than $50,000 9%; $50,000 to $99,999 4%; $100,000 to $199,999 6%; $200,000 to $299,999 24%; $300,000 to $399,999 28%; $400,000 to $499,999 13%; $500,000 to $749,999 9%; $750,000 to $999,999 2%; $1,000,000 to $1,999,999 3%; $2,000,000 or more 4%.

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 taxes8%
  2. Less than $80014%
  3. $800 to $1,49923%
  4. $1,500 to $1,99912%
  5. $2,000 to $2,99923%
  6. $3,000 or more21%

Property taxes owners pay a year in Trinity County: No real estate taxes 8%; Less than $800 14%; $800 to $1,499 23%; $1,500 to $1,999 12%; $2,000 to $2,999 23%; $3,000 or more 21%.

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 Trinity County property tax appeals

When is the Trinity County property tax appeal deadline?

The Trinity County appeals board (Clerk of the Board of Supervisors) window closes November 30, 2026.[5][6]

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

Written findings of fact from Trinity County's appeals board require a $100 minimum deposit at the hearing, and costs may exceed it.[2]

Where do I file an assessment appeal in Trinity County?

Trinity County appeal applications come from the Clerk of the Board and must be postmarked by the November 30 deadline, even if an informal review is still open.[1]

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

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

What other rules apply in Trinity County?

Trinity County appeals board (Clerk of the Board of Supervisors): In Trinity County an assessment review or appeal does not change the tax due date; late payments get interest and penalties.

Paying the tax while you appealTrinity County appeals board (Clerk of the Board of Supervisors)
In Trinity County an assessment review or appeal does not change the tax due date; late payments get interest and penalties.[1]

Property tax guides for Trinity County homeowners

Counties next to Trinity County

California property tax appeals: all counties

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Where do these facts come from?

  1. [1]2026 Request for Informal Assessment Review (Trinity County Assessor)Official guide or FAQ · last checked Sep 29, 2026
  2. [2]Assessment Appeal Application (BOE-305-AH), Trinity County Clerk of the Board (PDF)Official notice, form, calendar or rules · last checked Oct 1, 2026
  3. [3]Claim for Homeowners' Property Tax Exemption (BOE-266), Trinity County Assessor Real Property Forms (PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
  4. [4]Board of Supervisors | Trinity County, CAOfficial guide or FAQ · last checked Oct 1, 2026
  5. [5]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
  6. [6]Publication 30: Residential Property Assessment Appeals (California State Board of Equalization, February 2020)Official guide or FAQ · last checked Sep 25, 2026
  7. [7]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
  8. [8]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
  9. [9]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
  10. 10.County open data: trinity assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  11. 11.County open data: trinity assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  12. 12.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Trinity County, California
  13. 13.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — Trinity County, California
  14. 14.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Trinity County, California

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

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

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