Arlington Heights Property Tax Quick Facts
- Location
- Arlington Heights, Illinois
- Cook County
- Assessed By
- Cook County Assessor
- Appeal Deadline
- Varies by township
- County Tax Rate
- ~2.1%
- Shared with Arlington Heights
How to Appeal Property Taxes in Arlington Heights
Check your assessment
Enter your Arlington Heights address for a free 60-second check. We compare your assessed value against comparable sales and neighborhood data.
Get your evidence packet
If over-assessed, pay $45 for a complete appeal packet with comparable sales, equity analysis, and pre-filled forms for Cook County.
File your appeal
Submit your appeal to Cook County Assessor before Varies by township. Our filing guide walks you through every step.
About the Arlington Heights Property Market
Arlington Heights is a city located in Cook County, Illinois. Every property inside the Arlington Heights city limits is assessed by Cook County Assessor, which applies Illinois property tax rules uniformly across the county.
Because Arlington Heights property values are set at the county level, the $280,000 county median home value and 2.1% effective tax rate apply to homes throughout the city. Homeowners who believe their Arlington Heights home is over-assessed have the right to file a appeal directly with Cook County Assessor before the Varies by township deadline.
Illinois allows the assessor to defend or adjust the assessed value during a appeal, so Arlington Heights homeowners should build a strong evidence-based case before filing — which is exactly what ProtestMax generates for $45.
Arlington Heights Property Market Context
Arlington Heights sits within Illinois's broader property tax landscape as a city, and local assessments reflect both state rules and county-level mass appraisal practices.
Illinois market character
Illinois has the second-highest effective property tax rate in the country at around 2.1%, and Cook County uses a triennial reassessment cycle with notoriously inconsistent mass appraisals. Chicago-area homeowners often have the strongest protest case of any state.
How Illinois handles appeals
Illinois has multiple appeal levels: Cook County Assessor, Cook County Board of Review, Illinois Property Tax Appeal Board (PTAB), and Circuit Court. There is no risk of an increase from filing, and the multi-step process gives homeowners multiple chances to win.
When to file in Arlington Heights
Cook County appeal windows rotate by township, each open for roughly 30 days after notice mailing. The Board of Review opens separately. Outside Cook, most counties require appeals 30 days after notice.
Common Arlington Heights Property Types
Arlington Heights homeowners typically file protests across these property categories:
Single-family homes
The most common residential type and the dominant protest category.
Condominiums
Common in denser parts of the city and near employment centers.
Townhouses
Attached-home neighborhoods in newer subdivisions.
Small multi-family
Duplexes and 2-4 unit buildings assessed as income property.
Commercial
Retail, office, and small commercial along major corridors.
ProtestMax supports all of the above property types in Arlington Heights. Each appealpacket is tailored to the property's classification and uses comparable sales from Arlington Heights and surrounding Cook County neighborhoods.
Arlington Heights Property Tax Appeal Questions
How do I appeal my property tax in Arlington Heights, Illinois?
What is the property tax rate in Arlington Heights?
When is the appeal deadline for Arlington Heights property taxes?
How much can I save on property taxes in Arlington Heights?
Can my Arlington Heights property tax increase from filing a appeal?
Nearby Cities in Cook County
These Illinois cities share the same appeal deadline (Varies by township) and are assessed by Cook County Assessor.