California · County guide
Lassen County, California property tax appeals
A Lassen County property tax appeal starts with the Lassen County appeals board (Clerk of the Board of Supervisors). The next deadline is Nov 30, 2026 for the Lassen County appeals board (Clerk of the Board of Supervisors).
This season
- Next deadline
- Nov 30, 2026
- Open now
- Lassen 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
Check a Lassen 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
- Lassen County appeals board (Clerk of the Board of Supervisors)
- Office address
- Clerk of the Board of Supervisors, 220 South Lassen Street, Annex, Susanville, CA 96130 · 530-251-8217
- Our coverage
- Free check available
- Independent guide — not affiliated with Lassen 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 Lassen County property tax appeal?
Who hears a Lassen County appeal?
One stage. We are not affiliated with this office.
Who hears it: Lassen County appeals board (Clerk of the Board of Supervisors)
Filing: appeal
Open nowWhere is the Lassen County office?
Lassen County appeals board (Clerk of the Board of Supervisors)[5]
- Address
- Clerk of the Board of Supervisors, 220 South Lassen Street, Annex, Susanville, CA 96130
- Phone
- 530-251-8217
- Online
- Official website
Assessor[4]
- Address
- 107 S. Roop St., Susanville, CA 96130
- Phone
- 530-251-8241
- Hours
- 9 am to Noon, 1 to 4 pm
We are not affiliated with this office. Hours can change, so call before you visit.
Which Lassen County filing windows are coming up?
| Closes | Area | Who hears it | Status |
|---|---|---|---|
| Nov 30, 2026 | Countywide | Lassen County appeals board (Clerk of the Board of Supervisors) · Official source · Last checked Sep 29, 2026 | Open now |
When were past Lassen County deadlines?
| Tax year | Window | Office |
|---|---|---|
| 2025 | Closed December 1, 2025 | Lassen County appeals board (Clerk of the Board of Supervisors) |
| 2024 | Closed December 2, 2024 | Lassen County appeals board (Clerk of the Board of Supervisors) |
| 2023 | Closed November 30, 2023 | Lassen County appeals board (Clerk of the Board of Supervisors) |
When is the deadline to appeal a property tax assessment in Lassen County?
The soonest deadline we list: Lassen County, Lassen County appeals board (Clerk of the Board of Supervisors) — Closes November 30, 2026.
- When a filing counts as on timeLassen County appeals board (Clerk of the Board of Supervisors)
- Lassen County's appeals board rules treat an application mailed with a postmark on or before the final filing date as timely; a U.S. Postal Service postmark controls over a private postage-meter date.[1]
- Deadline detailLassen County appeals board (Clerk of the Board of Supervisors) · Untimely
- Lassen County's appeals board rules say an application filed outside the filing period must be rejected as untimely.[1]
Who decides a property tax appeal in Lassen County?
Lassen County appeals board (Clerk of the Board of Supervisors): The Lassen County Assessment Appeals Board's decision is final and not reheard; the owner or the Lassen County Assessor may seek review in superior court. Lassen County appeals board (Clerk of the Board of Supervisors): In Lassen County the filing is an assessment appeal on the Assessment Appeal Application (BOE-305-AH), heard by the Lassen County Assessment Appeals Board.
- Appeal stepsLassen County appeals board (Clerk of the Board of Supervisors)
- The Lassen County Assessment Appeals Board's decision is final and not reheard; the owner or the Lassen County Assessor may seek review in superior court.[2]
- What the appeal is calledLassen County appeals board (Clerk of the Board of Supervisors)
- In Lassen County the filing is an assessment appeal on the Assessment Appeal Application (BOE-305-AH), heard by the Lassen County Assessment Appeals Board.[2]
How do I file a property tax appeal in Lassen County?
Lassen County appeals board (Clerk of the Board of Supervisors): In Lassen County the clerk of the board of supervisors is also the clerk of the assessment appeals board, and applications are filed with that clerk during the filing period. Lassen County appeals board (Clerk of the Board of Supervisors) · Clerk: Lassen County's clerk of the board of supervisors also serves as clerk of the assessment appeals board.
- How to fileLassen County appeals board (Clerk of the Board of Supervisors)
- In Lassen County the clerk of the board of supervisors is also the clerk of the assessment appeals board, and applications are filed with that clerk during the filing period.[1]
- How to fileLassen County appeals board (Clerk of the Board of Supervisors) · Clerk
- Lassen County's clerk of the board of supervisors also serves as clerk of the assessment appeals board.[1]
- FormsLassen County appeals board (Clerk of the Board of Supervisors)
- Lassen County publishes its own copy of the Assessment Appeal Application (BOE-305-AH) with filing instructions.[2]
- Who may fileLassen County appeals board (Clerk of the Board of Supervisors)
- On the Lassen 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]
What evidence counts in Lassen County, and can the value go up?
What evidence can I use in Lassen County?
Lassen County appeals board (Clerk of the Board of Supervisors): Lassen County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value. Lassen County appeals board (Clerk of the Board of Supervisors) · Exchange: Before a Lassen 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 acceptedLassen County appeals board (Clerk of the Board of Supervisors)
- Lassen County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value.[2]
- Evidence ruleLassen County appeals board (Clerk of the Board of Supervisors) · Exchange
- Before a Lassen 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 Lassen County?
Lassen County appeals board (Clerk of the Board of Supervisors): Lassen County's appeal instructions say the Lassen County Assessment Appeals Board can raise, lower or keep the assessment, depending on the hearing evidence.
- Can the value go up?Lassen County appeals board (Clerk of the Board of Supervisors)
- Lassen County's appeal instructions say the Lassen 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?
Lassen County's forms page offers the Claim for Homeowners' Property Tax Exemption (BOE-266) for owners claiming the Homeowners' Exemption.
- Homeowner exemption
- Lassen County's forms page offers the Claim for Homeowners' Property Tax Exemption (BOE-266) for owners claiming the Homeowners' Exemption.[3]
What do Lassen 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 Lassen County property taxes?
Tax rate used: 1.018% of assessed value (county average, fiscal 2024-25).
| Example | Tax saved |
|---|---|
| $10,000 less assessed value | $102 a year |
| 10% less on a home assessed at $265,300 (the Census median home value) | $270 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 Lassen County pay in property tax?
The median owner-occupied home in Lassen County was worth $265,300, and the median property tax its owners paid was $1,923 a year, according to the Census Bureau's American Community Survey.
- Median home value
- $265,300
- Margin of error ±$12,020.
- Median property tax paid per year
- $1,923
- Margin of error ±$103.
- Median tax as a share of median value
- 0.72%
- A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
- Owner-occupied homes
- 6,305
- Margin of error ±356.
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: Lassen County compared
- Lassen County$265,300
- Typical California county$481,100
- Typical US county$185,300
Typical California county $481,100; Lassen County $265,300; Typical US county $185,300
Median property tax paid: Lassen County compared
- Lassen County$1,923
- Typical California county$3,294
- Typical US county$1,619
Typical California county $3,294 a year; Lassen County $1,923 a year; Typical US county $1,619 a year
Lassen County filing windows on a calendar
- Open
- Opens soon
- Forecast
- Lassen County appeals board (Clerk of the Board of Supervisors)Nov 30, 2026 · Open now
The dashed line marks today.
Lassen County appeals board (Clerk of the Board of Supervisors): Nov 30, 2026
How often is property reassessed in Lassen County?
Lassen County's appeal application instructions explain that the base year is the year the property changed ownership or new construction was completed. Lassen County's appeals board rules say the valuation date for a decline-in-value appeal is the lien date, January 1 of the current assessment year.
- Reassessment cycle
- Lassen 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
- Lassen County's appeals board rules say the valuation date for a decline-in-value appeal is the lien date, January 1 of the current assessment year.[1]
- Level of assessmentDecline in value
- On the Lassen County application, a Decline in Value appeal means the home's January 1 market value is below its assessed value, and it covers only the year appealed.[2]
Homes in Lassen 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
- 75%
- of 12,231 housing units
- Owned homes with a mortgage or similar loan
- 57%
- of 6,305 owner-occupied homes
Home values reported by owners
- Less than $50,0009%
- $50,000 to $99,9994%
- $100,000 to $199,99918%
- $200,000 to $299,99929%
- $300,000 to $399,99921%
- $400,000 to $499,99910%
- $500,000 to $749,9997%
- $750,000 to $999,9992%
- $1,000,000 to $1,999,9991%
- $2,000,000 or more0%
Home values reported by owners in Lassen County: Less than $50,000 9%; $50,000 to $99,999 4%; $100,000 to $199,999 18%; $200,000 to $299,999 29%; $300,000 to $399,999 21%; $400,000 to $499,999 10%; $500,000 to $749,999 7%; $750,000 to $999,999 2%; $1,000,000 to $1,999,999 1%; $2,000,000 or more 0%.
Property taxes owners pay a year
- No real estate taxes7%
- Less than $80014%
- $800 to $1,49919%
- $1,500 to $1,99916%
- $2,000 to $2,99920%
- $3,000 or more24%
Property taxes owners pay a year in Lassen County: No real estate taxes 7%; Less than $800 14%; $800 to $1,499 19%; $1,500 to $1,999 16%; $2,000 to $2,999 20%; $3,000 or more 24%.
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 Lassen County property tax appeals
When is the Lassen County property tax appeal deadline?
The Lassen County appeals board (Clerk of the Board of Supervisors) window closes November 30, 2026.[6][7]
Where do I file an assessment appeal in Lassen County?
In Lassen County the clerk of the board of supervisors is also the clerk of the assessment appeals board, and applications are filed with that clerk during the filing period.[1]
Can my assessed value go up if I appeal in Lassen County?
Lassen County's appeal instructions say the Lassen County Assessment Appeals Board can raise, lower or keep the assessment, depending on the hearing evidence.[2]
What other rules apply in Lassen County?
Lassen County appeals board (Clerk of the Board of Supervisors): Filing a Lassen County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.
- Paying the tax while you appealLassen County appeals board (Clerk of the Board of Supervisors)
- Filing a Lassen 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 Lassen County appeals board (Clerk of the Board of Supervisors):
- Filing fee
Property tax guides for Lassen County homeowners
- How Comparable Homes Are Chosen, and Why It MattersCalifornia · Lassen County
- How to Appeal Your Property Taxes YourselfCalifornia · Lassen County
- Assessed Value vs. Market Value: How They Differ by StateCalifornia · Lassen County
- Homestead and Other Exemptions to Check FirstCalifornia · Lassen County
- Homestead Exemption: What It Is and How to Get ItCalifornia · Lassen County
- How to Lower Your Property Taxes: What to Check FirstCalifornia · Lassen County
Counties next to Lassen County
- Plumas County property tax appealsFree check availableNext deadline: Nov 30, 2026
- Modoc County property tax appealsFree check availableNext deadline: Nov 30, 2026
- Shasta County property tax appealsFree check availableNext deadline: Nov 30, 2026
- Sierra County property tax appealsWaitlist open
Check a Lassen County home free
You decide and file yourself.
Where do these facts come from?
- [1]Rules of Notice and Procedure for the Lassen County Assessment Appeals Board (PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
- [2]Assessment Appeal Application (BOE-305-AH) with instructions (Lassen County, PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
- [3]Forms | Lassen County, CAOfficial guide or FAQ · last checked Sep 30, 2026
- [4]Assessor | Lassen County, CAOfficial guide or FAQ · last checked Sep 30, 2026
- [5]Clerk of the Board of Supervisors | Lassen County, CAOfficial guide or FAQ · last checked Sep 29, 2026
- [6]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
- [7]Publication 30: Residential Property Assessment Appeals (California State Board of Equalization, February 2020)Official guide or FAQ · last checked Sep 25, 2026
- [8]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
- [9]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
- [10]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
- 11.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Lassen County, California
- 12.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — Lassen County, California
- 13.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Lassen County, California
Data credits: Census ACS (public domain) · Census county adjacency (public domain)
Not affiliated with Lassen County or any government agency. Not legal advice. Not an appraisal.