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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- Where to file first
- Colusa County Board of Supervisors (Assessment Appeals Board)
- 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
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.
Who hears it: Colusa County Board of Supervisors (Assessment Appeals Board)
Filing: appeal
Open nowWhere 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
- Phone
- (530) 458-0508
- Fax
- (530) 458-0510
- Online
- Official website
Assessor[6]
- Address
- 547 Market Street, Suite 101, Colusa, CA 95932
- Phone
- (530) 458-0450
- Fax
- (530) 458-0436
- Hours
- Monday-Friday 8:30 a.m.-5:00 p.m.
Colusa County Assessor[6]
- Phone
- (530) 458-0450
We are not affiliated with this office. Hours can change, so call before you visit.
Which Colusa County filing windows are coming up?
| Closes | Area | Who hears it | Status |
|---|---|---|---|
| Nov 30, 2026 | Countywide | Colusa County Board of Supervisors (Assessment Appeals Board) · Official source · Last checked Sep 29, 2026 | Open now |
When were past Colusa County deadlines?
| Tax year | Window | Office |
|---|---|---|
| 2025 | Closed December 1, 2025 | Colusa County Board of Supervisors (Assessment Appeals Board) |
| 2024 | Closed December 2, 2024 | Colusa County Board of Supervisors (Assessment Appeals Board) |
| 2023 | Closed November 30, 2023 | Colusa 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]
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).
| Example | Tax 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
- Colusa County$393,400
- Typical California county$481,100
- Typical US county$185,300
Typical California county $481,100; Colusa County $393,400; Typical US county $185,300
Median property tax paid: Colusa County compared
- Colusa County$2,426
- Typical California county$3,294
- 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
Colusa County filing windows on a calendar
- Open
- Opens soon
- Forecast
- 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
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
- Less than $50,0002%
- $50,000 to $99,9993%
- $100,000 to $199,9996%
- $200,000 to $299,99911%
- $300,000 to $399,99929%
- $400,000 to $499,99922%
- $500,000 to $749,99915%
- $750,000 to $999,9996%
- $1,000,000 to $1,999,9992%
- $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%.
Property taxes owners pay a year
- No real estate taxes4%
- Less than $8007%
- $800 to $1,49914%
- $1,500 to $1,99917%
- $2,000 to $2,99923%
- $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%.
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
- How Comparable Homes Are Chosen, and Why It MattersCalifornia · Colusa County
- How to Appeal Your Property Taxes YourselfCalifornia · Colusa County
- Assessed Value vs. Market Value: How They Differ by StateCalifornia · Colusa County
- Homestead and Other Exemptions to Check FirstCalifornia · Colusa County
- Homestead Exemption: What It Is and How to Get ItCalifornia · Colusa County
- How to Lower Your Property Taxes: What to Check FirstCalifornia · Colusa County
Counties next to Colusa County
- Lake County property tax appealsFree check availableNext deadline: Nov 30, 2026
- Glenn County property tax appealsFree check availableNext deadline: Nov 30, 2026
- Sutter County property tax appealsFree check availableNext deadline: Nov 30, 2026
- Yolo County property tax appealsFree check availableNext deadline: Nov 30, 2026
- Butte County property tax appealsFree check availableNext deadline: Nov 30, 2026
Check a Colusa County home free
You decide and file yourself.
Where do these facts come from?
- [1]Appeals | Colusa County, CA - Official WebsiteOfficial guide or FAQ · last checked Sep 29, 2026
- [2]Assessment Appeal Application (BOE-305-AH) with instructions (Colusa County, PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
- [3]FAQs - Colusa County, CAOfficial guide or FAQ · last checked Sep 29, 2026
- [4]Tax Savings Programs | Colusa County AssessorOfficial guide or FAQ · last checked Sep 29, 2026
- [5]Property Taxes | Colusa County AssessorOfficial guide or FAQ · last checked Sep 29, 2026
- [6]Assessor | Colusa County, CA - Official WebsiteOfficial guide or FAQ · last checked Oct 1, 2026
- [7]Board of Supervisors | Colusa County, CA - Official WebsiteOfficial guide or FAQ · last checked Oct 1, 2026
- [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]Publication 30: Residential Property Assessment Appeals (California State Board of Equalization, February 2020)Official guide or FAQ · last checked Sep 25, 2026
- [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]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]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.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Colusa County, California
- 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.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.