Zoning Certification

Zoning Certifications-Apply Online

Effective March 21, 2015 any property in Unincorporated Cook County that goes under contract is required to obtain a Zoning Certificate from this department in order to verify its current zoning classification, or any outstanding building permits and outstanding violations or judgments on said property prior to closing.

This zoning certificate is required for unincorporated residential properties only. It is not required for commercial or industrial properties or individual residential condominium units.

To find out if you are in the unincorporated Cook County, please use the interactive mapping application COOKVIEWER.

If you have any questions about the submittal requirements or cannot identify the jurisdiction of the subject property, please email info.bnz@cookcountyil.gov for assistance.

After completing the online application process, a $100 fee will be required payable by credit card online. Please allow up to 5 business days for a certificate to be returned to you by email.


Before continuing, please verify that the residential property you are requesting a zoning certificate for is located in UNINCORPORATED COOK COUNTY. These certificates are not valid for properties located in the City of Chicago or properties within the incorporated municipal boundaries of suburban cities and villages.

Click here to begin!