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California · County guide

Imperial County, California property tax appeals

An Imperial County property tax appeal starts with the Imperial County Assessment Appeals Board. The next deadline is Nov 30, 2026 for the Imperial County Assessment Appeals Board. The filing fee is $35 per application.

This season

Next deadline
Nov 30, 2026
Open now
Imperial County 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

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Filing fee
$35 per application
Where to file first
Imperial County Assessment Appeals Board
Our coverage
Free check available
  • Independent guide — not affiliated with Imperial 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 an Imperial County property tax appeal?

Who hears an Imperial County appeal?

One stage. We are not affiliated with this office.

Who hears it: Imperial County Assessment Appeals Board

Filing: appeal

Open now

Where is the Imperial County office?

Office[1]

Imperial County Board of Supervisors / Clerk of the Board

Address
940 W. Main Street, Suite 209, El Centro, CA 92243-2839
Fax
(442) 265-1027

Assessor[5]

Imperial County Assessor

Address
940 W. Main Street, Suite 115, El Centro, CA 92243
Fax
(442) 265-8030
Hours
Monday-Friday (except holidays) 8:00 am-5:00 pm; public hours 9:00 am-5:00 pm

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

Which Imperial County filing windows are coming up?

Imperial County filing windows
ClosesAreaWho hears itStatus
Nov 30, 2026CountywideImperial County Assessment Appeals Board · Official source · Last checked Sep 29, 2026Open now

When were past Imperial County deadlines?

Past Imperial County filing windows
Tax yearWindowOffice
2025Closed December 1, 2025Imperial County Assessment Appeals Board
2024Closed December 2, 2024Imperial County Assessment Appeals Board
2023Closed November 30, 2023Imperial County Assessment Appeals Board

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

The soonest deadline we list: Imperial County, Imperial County Assessment Appeals Board — Closes November 30, 2026.

When a filing counts as on timeImperial County Assessment Appeals Board
Imperial County counts an application as on time if it is postmarked by the November 30 deadline; faxed applications are refused.[1]
Deadline detailImperial County Assessment Appeals Board · Filing period
Imperial County's regular appeal filing period is July 2 to November 30 each year.[1]

Who decides a property tax appeal in Imperial County?

The Imperial County Assessment Appeals Board's decision is final and not reheard; the owner or the Imperial County Assessor may seek review in superior court. Imperial County Assessment Appeals Board: In Imperial County the filing is an assessment appeal on the Assessment Appeal Application (BOE-305-AH), heard by the Imperial County Assessment Appeals Board.

Appeal stepsImperial County Assessment Appeals Board
The Imperial County Assessment Appeals Board's decision is final and not reheard; the owner or the Imperial County Assessor may seek review in superior court.[2]
What the appeal is calledImperial County Assessment Appeals Board
In Imperial County the filing is an assessment appeal on the Assessment Appeal Application (BOE-305-AH), heard by the Imperial County Assessment Appeals Board.[2]

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

Imperial County Assessment Appeals Board: In Imperial County you file the paper application; faxed applications are not accepted, and an application postmarked by November 30 is on time. Imperial County Assessment Appeals Board: Imperial County publishes its own copy of the Assessment Appeal Application (BOE-305-AH) with filing instructions.

How to fileImperial County Assessment Appeals Board
In Imperial County you file the paper application; faxed applications are not accepted, and an application postmarked by November 30 is on time.[1]
FormsImperial County Assessment Appeals Board
Imperial County publishes its own copy of the Assessment Appeal Application (BOE-305-AH) with filing instructions.[2]
Filing feeImperial County Assessment Appeals Board
Imperial County charges a $35 non-refundable filing fee for each appeal application.[1]
Who may fileImperial County Assessment Appeals Board
On the Imperial 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 reviewImperial County Assessment Appeals Board
In Imperial County you can ask the Assessor for an informal review for the upcoming tax year between December 1 and March 31; it is not a formal appeal.[3]

Upcoming appeal deadlines in every county we track

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

What evidence can I use in Imperial County?

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

Imperial County Assessment Appeals Board: Imperial County's appeal instructions say the Imperial County Assessment Appeals Board can raise, lower or keep the assessment, depending on the hearing evidence.

Can the value go up?Imperial County Assessment Appeals Board
Imperial County's appeal instructions say the Imperial 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?

Imperial County's Homeowner's Exemption cuts the assessed value by $7,000 (at least $70 off the bill); for the full exemption, file with the Assessor between January 1 and February 15.

Homeowner exemption
Imperial County's Homeowner's Exemption cuts the assessed value by $7,000 (at least $70 off the bill); for the full exemption, file with the Assessor between January 1 and February 15.[4]

What do Imperial 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 Imperial County property taxes?

Tax rate used: 1.171% of assessed value (county average, fiscal 2024-25).

How much could a lower assessment save on Imperial County property taxes?
ExampleTax saved
$10,000 less assessed value$117 a year
10% less on a home assessed at $119,459 (the county's 25th percentile)$140 a year
10% less on a home assessed at $200,249 (the county's median)$234 a year
10% less on a home assessed at $298,423 (the county's 75th percentile)$349 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 Imperial County pay in property tax?

The median owner-occupied home in Imperial County was worth $309,600, and the median property tax its owners paid was $2,394 a year, according to the Census Bureau's American Community Survey.

Median home value
$309,600
Margin of error ±$8,398.
Median property tax paid per year
$2,394
Margin of error ±$125.
Median tax as a share of median value
0.77%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
28,210
Margin of error ±1,091.

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
38,813
Median assessed value
$200,249
Middle half of assessed values
$119,459 to $298,423

Source: The county's open assessment data, aggregated by us (tax year 2026 final values). Our calculation from public records; not an opinion of any home's value.

How Imperial County home assessments are spread

Assessed values of 38,813 homes in the property classes our free check covers (R1, R2, R3, R4, R5 and 9 more), tax year 2026 final values. Half are between $119,459 and $298,423; the median is $200,249. The last bar holds everything above it.Source: Assessment records from the county's open data (tax year 2026 final values), retrieved Sep 27, 2026; our calculation.

Median home value: Imperial County compared

  1. Imperial County$309,600
  2. Typical California county$481,100
  3. Typical US county$185,300

Typical California county $481,100; Imperial County $309,600; 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: Imperial County compared

  1. Imperial County$2,394
  2. Typical California county$3,294
  3. Typical US county$1,619

Typical California county $3,294 a year; Imperial County $2,394 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 030$303,042
  2. Map book 048$291,882
  3. Map book 064$288,845
  4. Map book 059$270,606
  5. Map book 054$257,420
  6. Map book 052$254,370
  7. Map book 044$253,934
  8. Map book 055$239,248
  9. Map book 046$210,401
  10. Map book 063$207,655
  11. Map book 050$194,551
  12. Map book 058$192,270
  13. Map book 062$183,508
  14. Map book 053$169,868
  15. Map book 007$154,385
  16. Map book 045$153,414
  17. Map book 047$145,067
  18. Map book 049$128,049
  19. Map book 023$120,673
  20. Map book 008$118,227
  21. Map book 035$113,088
  22. Map book 011$110,451
  23. Map book 012$107,827
  24. Map book 040$107,690
  25. Map book 010$105,343
  26. Map book 009$102,399
  27. Map book 051$101,475
  28. Map book 017$97,686
  29. Map book 014$88,614
  30. Map book 015$72,468
  31. Map book 006$56,508
  32. Map book 056$54,093
  33. Map book 033$49,168
  34. Map book 001$38,432
  35. Map book 021$29,652
  36. Map book 002$16,396

Median assessed value by map book: highest Map book 030 ($303,042), lowest Map book 002 ($16,396).

Median assessed value of homes in the property classes our free check covers (R1, R2, R3, R4, R5 and 9 more) for each map book with at least 50 such homes, tax year 2026 final values.Source: Assessment records from the county's open data (tax year 2026 final values), retrieved Sep 27, 2026; our calculation.

Imperial County filing windows on a calendar

  1. Imperial County Assessment Appeals BoardNov 30, 2026 · Open now

The dashed line marks today.

Imperial County 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 Imperial County?

Imperial County reappraises real property only after a change in ownership or new construction (Prop 13). Imperial County values property as of January 1 each year for Prop 8 reviews.

Reassessment cycle
Imperial County reappraises real property only after a change in ownership or new construction (Prop 13).[3]
Valuation date
Imperial County values property as of January 1 each year for Prop 8 reviews.[3]
Level of assessmentDecline in value
Under Prop 8 the Imperial County Assessor compares the factored base-year value with the January 1 market value and enrolls the lower one.[3]

Homes in Imperial 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
1988
All housing units, owned and rented
Single-family houses, detached or attached
65%
of 58,044 housing units
Owned homes with a mortgage or similar loan
59%
of 28,210 owner-occupied homes

Home values reported by owners

  1. Less than $50,0008%
  2. $50,000 to $99,9993%
  3. $100,000 to $199,99912%
  4. $200,000 to $299,99924%
  5. $300,000 to $399,99928%
  6. $400,000 to $499,99915%
  7. $500,000 to $749,9995%
  8. $750,000 to $999,9992%
  9. $1,000,000 to $1,999,9991%
  10. $2,000,000 or more1%

Home values reported by owners in Imperial County: Less than $50,000 8%; $50,000 to $99,999 3%; $100,000 to $199,999 12%; $200,000 to $299,999 24%; $300,000 to $399,999 28%; $400,000 to $499,999 15%; $500,000 to $749,999 5%; $750,000 to $999,999 2%; $1,000,000 to $1,999,999 1%; $2,000,000 or more 1%.

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 taxes7%
  2. Less than $80013%
  3. $800 to $1,49914%
  4. $1,500 to $1,99913%
  5. $2,000 to $2,99918%
  6. $3,000 or more36%

Property taxes owners pay a year in Imperial County: No real estate taxes 7%; Less than $800 13%; $800 to $1,499 14%; $1,500 to $1,999 13%; $2,000 to $2,999 18%; $3,000 or more 36%.

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 Imperial County property tax appeals

When is the Imperial County property tax appeal deadline?

The Imperial County Assessment Appeals Board window closes November 30, 2026.[6][7]

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

Imperial County charges a $35 non-refundable filing fee for each appeal application.[1]

Where do I file an assessment appeal in Imperial County?

In Imperial County you file the paper application; faxed applications are not accepted, and an application postmarked by November 30 is on time.[1]

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

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

What other rules apply in Imperial County?

Imperial County Assessment Appeals Board: Filing a Imperial County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.

Paying the tax while you appealImperial County Assessment Appeals Board
Filing a Imperial County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.[2]

Property tax guides for Imperial County homeowners

Counties next to Imperial County

California property tax appeals: all counties

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Where do these facts come from?

  1. [1]Assessment Appeals Board - Imperial County Board of SupervisorsOfficial guide or FAQ · last checked Oct 1, 2026
  2. [2]Assessment Appeal Application (BOE-305-AH) with instructions (Imperial County, PDF)Official notice, form, calendar or rules · last checked Sep 29, 2026
  3. [3]Real Property - Imperial County Assessor's OfficeOfficial guide or FAQ · last checked Sep 29, 2026
  4. [4]Exemptions | Imperial County Assessor's OfficeOfficial guide or FAQ · last checked Sep 29, 2026
  5. [5]Imperial County Assessor's Office Home PageOfficial guide or FAQ · last checked Oct 1, 2026
  6. [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. [7]Publication 30: Residential Property Assessment Appeals (California State Board of Equalization, February 2020)Official guide or FAQ · last checked Sep 25, 2026
  8. [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. [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. [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. 11.County open data: imperial assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  12. 12.County open data: imperial assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  13. 13.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Imperial 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 — Imperial County, California
  15. 15.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Imperial County, California

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

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

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