Cook County Class 6b Industrial Property Tax Incentive
Cook County reduces the assessed value of qualifying industrial property for 12 years to encourage new construction, substantial rehabilitation, or the reoccupancy of abandoned industrial buildings. Renewable in 10-year increments. Three variants: standard 6b, 6b SER, and 6b CEERM/TEERM.
Check an Address — Free Snapshot
See whether a specific Chicago address sits inside the area that unlocks Cook County Class 6b Industrial Property Tax Incentive, alongside every other incentive that touches that parcel.
Industrial property owners or developers anywhere in Cook County undertaking new construction, substantial rehab, or reoccupancy of abandoned industrial buildings.
Cook County Class 6b Industrial Property Tax Incentive is administered at the county level. Depending on the program, eligibility may depend on the specific location, property type, or business activity rather than a single drawn boundary.
Boundaries are precise and change over time, so exact eligibility always depends on the specific address. The fastest way to know is to run a free snapshot for the parcel you have in mind.
Typical range · 10% assessment (vs. 25%) for 10 years, then 15% / 20%
- +Assessed at 10% of market value for years 1-10 (vs. standard 25%)
- +15% in year 11, 20% in year 12, then standard rate
- +Renewable for additional 12-year terms
- +Typical savings: ~60% of property tax liability over the incentive period
- 1Obtain a municipal resolution of support from the host municipality (City Council ordinance in Chicago)
- 2File the Class 6b Eligibility Application with the Cook County Assessor before construction begins (or within one year of substantial completion)
- 3Submit Incentive Application after project completion with cost documentation
- 4Assessor verifies industrial use and project qualification
Call Assessor Incentives at (312) 603-7529 to confirm 6b eligibility
- Municipal resolution of support
- Class 6b Eligibility Application + Incentive Application
- Project plans, permits, and cost certifications
- Proof of industrial use (NAICS code, employment, equipment)
- Abandonment affidavit if claiming reoccupancy
This page is a starting point, not eligibility, legal, or tax advice. Verify current requirements, deadlines, and boundaries with the administering agency before applying or spending money — program rules and funding change over time.
- Municipal resolution of support — Chicago City Council (or host municipality)
- Cook County Assessor Incentive Filing — Cook County Assessor's Office
File the Eligibility Application with the Assessor BEFORE construction, substantial rehabilitation, or reoccupation begins; filing after work starts can forfeit eligibility. The application may be filed up to one year before commencement.
- Phone
- (312) 603-7529
- Web
- Visit site ↗
Last verified 2026-07-10
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