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California · County guide

Colusa County, California property tax appeals

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

This season

Next deadline
Nov 30, 2026
Open now
Colusa County Board of Supervisors (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

Check a Colusa 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!

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A $106,300 reduction

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Megan HollisHomeowner
Office address
547 Market St., Suite 102, Colusa, CA 95932 · (530) 458-0508
Our coverage
Free check available
  • Independent guide — not affiliated with Colusa 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 Colusa County property tax appeal?

Who hears a Colusa County appeal?

One stage. We are not affiliated with this office.

Where is the Colusa County office?

Colusa County Board of Supervisors (Assessment Appeals Board)[7]

Colusa County Board of Supervisors (Clerk of the Board)

Address
547 Market St., Suite 102, Colusa, CA 95932
Fax
(530) 458-0510

Assessor[6]

Address
547 Market Street, Suite 101, Colusa, CA 95932
Fax
(530) 458-0436
Hours
Monday-Friday 8:30 a.m.-5:00 p.m.

Colusa County Assessor[6]

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

Which Colusa County filing windows are coming up?

Colusa County filing windows
ClosesAreaWho hears itStatus
Nov 30, 2026CountywideColusa County Board of Supervisors (Assessment Appeals Board) · Official source · Last checked Sep 29, 2026Open now

When were past Colusa County deadlines?

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

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

The soonest deadline we list: Colusa County, Colusa County Board of Supervisors (Assessment Appeals Board) — Closes November 30, 2026.

Deadline detailColusa County Board of Supervisors (Assessment Appeals Board) · Filing period
In Colusa County appeal applications are filed with the Board of Supervisors between July 2 and November 30.[1]

Who decides a property tax appeal in Colusa County?

The Colusa County Board of Supervisors (Assessment Appeals Board)'s decision is final and not reheard; the owner or the Colusa County Assessor may seek review in superior court. Colusa County Board of Supervisors (Assessment Appeals Board): In Colusa County, an owner who still disagrees after talking to the Assessor applies to be heard before the Assessment Appeals Board; applications go to the Board of Supervisors.

Appeal stepsColusa County Board of Supervisors (Assessment Appeals Board)
The Colusa County Board of Supervisors (Assessment Appeals Board)'s decision is final and not reheard; the owner or the Colusa County Assessor may seek review in superior court.[2]
What the appeal is calledColusa County Board of Supervisors (Assessment Appeals Board)
In Colusa County, an owner who still disagrees after talking to the Assessor applies to be heard before the Assessment Appeals Board; applications go to the Board of Supervisors.[1]

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

Colusa County Board of Supervisors (Assessment Appeals Board): In Colusa County you download the appeal form and submit it to the Clerk of the Board, 547 Market St., Suite 102, Colusa. Colusa County Board of Supervisors (Assessment Appeals Board): Colusa County's Assessment Appeals Form is online; the completed form goes to the Clerk of the Board, 547 Market St., Suite 102, Colusa, CA 95932.

How to fileColusa County Board of Supervisors (Assessment Appeals Board)
In Colusa County you download the appeal form and submit it to the Clerk of the Board, 547 Market St., Suite 102, Colusa.[3]
FormsColusa County Board of Supervisors (Assessment Appeals Board)
Colusa County's Assessment Appeals Form is online; the completed form goes to the Clerk of the Board, 547 Market St., Suite 102, Colusa, CA 95932.[3]
Who may fileColusa County Board of Supervisors (Assessment Appeals Board)
On the Colusa 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 reviewColusa County Board of Supervisors (Assessment Appeals Board)
In Colusa County you can first bring evidence of market value to the Assessor's office, which will consider adjustments.[1]

Upcoming appeal deadlines in every county we track

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

What evidence can I use in Colusa County?

Colusa County Board of Supervisors (Assessment Appeals Board): Colusa County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value. Colusa County Board of Supervisors (Assessment Appeals Board) · Exchange: Before a Colusa 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 acceptedColusa County Board of Supervisors (Assessment Appeals Board)
Colusa County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value.[2]
Evidence ruleColusa County Board of Supervisors (Assessment Appeals Board) · Exchange
Before a Colusa 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 Colusa County?

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

Can the value go up?Colusa County Board of Supervisors (Assessment Appeals Board)
Colusa County's appeal instructions say the Colusa County Board of Supervisors (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?

A 100% disabled Colusa County veteran (or unmarried surviving spouse) may qualify for up to $189,571 off the home's assessed value, but not together with the Homeowner's Exemption. Colusa County owners who live in their home on January 1 can apply for the Homeowner's Exemption of $7,000 off the assessed value.

Disabled veteran
A 100% disabled Colusa County veteran (or unmarried surviving spouse) may qualify for up to $189,571 off the home's assessed value, but not together with the Homeowner's Exemption.[4]
Homeowner exemption
Colusa County owners who live in their home on January 1 can apply for the Homeowner's Exemption of $7,000 off the assessed value.[4]
Assessment limitsAnnual increase
Each year the Colusa County Assessor raises every parcel's roll value by inflation, capped at 2%.[5]

What do Colusa 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 Colusa County property taxes?

Tax rate used: 1.096% of assessed value (county average, fiscal 2024-25).

How much could a lower assessment save on Colusa County property taxes?
ExampleTax saved
$10,000 less assessed value$110 a year
10% less on a home assessed at $393,400 (the Census median home value)$431 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 Colusa County pay in property tax?

The median owner-occupied home in Colusa County was worth $393,400, and the median property tax its owners paid was $2,426 a year, according to the Census Bureau's American Community Survey.

Median home value
$393,400
Margin of error ±$24,633.
Median property tax paid per year
$2,426
Margin of error ±$207.
Median tax as a share of median value
0.62%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
4,674
Margin of error ±378.

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: Colusa County compared

  1. Colusa County$393,400
  2. Typical California county$481,100
  3. Typical US county$185,300

Typical California county $481,100; Colusa County $393,400; 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: Colusa County compared

  1. Colusa County$2,426
  2. Typical California county$3,294
  3. Typical US county$1,619

Typical California county $3,294 a year; Colusa County $2,426 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.

Colusa County filing windows on a calendar

  1. Colusa County Board of Supervisors (Assessment Appeals Board)Nov 30, 2026 · Open now

The dashed line marks today.

Colusa County Board of Supervisors (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 Colusa County?

Beyond the yearly inflation factor, Colusa County revalues property after a change in ownership, new construction, a decline in value or a disaster. Colusa County compares assessed value with market value as of January 1 of each year.

Reassessment cycle
Beyond the yearly inflation factor, Colusa County revalues property after a change in ownership, new construction, a decline in value or a disaster.[5]
Valuation date
Colusa County compares assessed value with market value as of January 1 of each year.[5]
Level of assessmentDecline in value
The Colusa County Assessor must lower an assessed value that is above the January 1 market value, and reviews it each year until it again equals the factored base year value.[5]

Homes in Colusa 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
1978
All housing units, owned and rented
Single-family houses, detached or attached
82%
of 8,211 housing units
Owned homes with a mortgage or similar loan
55%
of 4,674 owner-occupied homes

Home values reported by owners

  1. Less than $50,0002%
  2. $50,000 to $99,9993%
  3. $100,000 to $199,9996%
  4. $200,000 to $299,99911%
  5. $300,000 to $399,99929%
  6. $400,000 to $499,99922%
  7. $500,000 to $749,99915%
  8. $750,000 to $999,9996%
  9. $1,000,000 to $1,999,9992%
  10. $2,000,000 or more2%

Home values reported by owners in Colusa County: Less than $50,000 2%; $50,000 to $99,999 3%; $100,000 to $199,999 6%; $200,000 to $299,999 11%; $300,000 to $399,999 29%; $400,000 to $499,999 22%; $500,000 to $749,999 15%; $750,000 to $999,999 6%; $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 taxes4%
  2. Less than $8007%
  3. $800 to $1,49914%
  4. $1,500 to $1,99917%
  5. $2,000 to $2,99923%
  6. $3,000 or more35%

Property taxes owners pay a year in Colusa County: No real estate taxes 4%; Less than $800 7%; $800 to $1,499 14%; $1,500 to $1,999 17%; $2,000 to $2,999 23%; $3,000 or more 35%.

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 Colusa County property tax appeals

When is the Colusa County property tax appeal deadline?

The Colusa County Board of Supervisors (Assessment Appeals Board) window closes November 30, 2026.[8][9]

Where do I file an assessment appeal in Colusa County?

In Colusa County you download the appeal form and submit it to the Clerk of the Board, 547 Market St., Suite 102, Colusa.[3]

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

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

What other rules apply in Colusa County?

Colusa County Board of Supervisors (Assessment Appeals Board): Filing a Colusa County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.

Paying the tax while you appealColusa County Board of Supervisors (Assessment Appeals Board)
Filing a Colusa County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.[2]

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 Colusa County Board of Supervisors (Assessment Appeals Board):

  • When a filing counts as on time
  • Filing fee

Property tax guides for Colusa County homeowners

Counties next to Colusa County

California property tax appeals: all counties

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Where do these facts come from?

  1. [1]Appeals | Colusa County, CA - Official WebsiteOfficial guide or FAQ · last checked Sep 29, 2026
  2. [2]Assessment Appeal Application (BOE-305-AH) with instructions (Colusa County, PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
  3. [3]FAQs - Colusa County, CAOfficial guide or FAQ · last checked Sep 29, 2026
  4. [4]Tax Savings Programs | Colusa County AssessorOfficial guide or FAQ · last checked Sep 29, 2026
  5. [5]Property Taxes | Colusa County AssessorOfficial guide or FAQ · last checked Sep 29, 2026
  6. [6]Assessor | Colusa County, CA - Official WebsiteOfficial guide or FAQ · last checked Oct 1, 2026
  7. [7]Board of Supervisors | Colusa County, CA - Official WebsiteOfficial 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.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Colusa 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 — Colusa County, California
  15. 15.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Colusa County, California

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

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