Cook County, Illinois

Licensed Trade Records in Cook County, Illinois

Illustration for home services in Cook County
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Browse 2,907 verified licensed trade contractors registered across Cook County, Illinois (including Chicago, Evanston, Schaumburg, Arlington Heights). Every record is compiled from Illinois Department of Public Health & Department of Financial and Professional Regulation (IL IDPH / IDFPR) public credential files under Illinois Plumbing License Law (225 ILCS 320), Illinois Roofing Industry Licensing Act (225 ILCS 335), and Municipal Contractor Registration Ordinances.

Official State Authority: Illinois Department of Public Health & Department of Financial and Professional Regulation (IL IDPH / IDFPR) Official Registry · County Seat: Chicago

Municipalities in Cook County (1)

Select a city or town in Cook County to view local permit guidance and registered licensed trade records:

2907 licensed trade records · Cook County, IL

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Public Directory Quality: Official IL IDPH / IDFPR license records across Cook County · Zero sponsored order · Never sold as a lead · How our data works →

All trades directory — Cook County

2907 matching records across 1 open municipalities · 25 on this page · Contactable records first, then alphabetical.

Show registered-address map (25 records on this page)15 approximate areas

Shaded areas mark approximate postal or city locations, not premises or service areas. Circle sizes are illustrative, not postal boundaries. Some records share the same area. Private addresses are excluded.

3ZIP 606393ZIP 606242ZIP 606172ZIP 606302ZIP 606232ZIP 606292ZIP 606222ZIP 606411ZIP 606201ZIP 606561ZIP 606511ZIP 606161ZIP 606281ZIP 606181ZIP 60643Approximate postal/city centroid schematic (15 areas)

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Denmark Roofing & Gutter

Official license file From the official license file Roofing · City of Chicago Department of Business Affairs and Consumer Protection · Specialty scope: Roofing & Weatherproofing

Registered address: 4438 W FULLERTON AVE, Chicago, IL 60639

1542909 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

+1 more registration for this business
  • 1120458 · 4438 W FULLERTON AVE, Chicago, IL 60639
No public phone or website on record.
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Deonte Capri Hvac

Official license file From the official license file Heating & cooling · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 3918 W POLK ST, Chicago, IL 60624

1820241 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Devon's Heating & Air Conditio

Official license file From the official license file Heating & cooling · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 10010 S INDIANAPOLIS AVE, Chicago, IL 60617

24124 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Dheating & Cooling

Official license file From the official license file Heating & cooling · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 8300 S ABERDEEN ST, Chicago, IL 60620

1047675 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Di Home Improvement Constructi

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 5520 N NATOMA AVE 1ST, Chicago, IL 60656

70172 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Diamond Electric Contracting, Inc.

Official license file From the official license file Electrical · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 5583 N NORTHWEST HWY, Chicago, IL 60630

1649525 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Diamond Home Service

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 5030 W LAWRENCE AVE 1, Chicago, IL 60630

55978 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Diaz Construction & Sons

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 3239 W CERMAK RD, Chicago, IL 60623

1598162 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Diaz Correa Corporation

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 3229 W BEACH AVE, Chicago, IL 60651

1681479 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Difoggio Plumbing Partners, Inc.

Official license file From the official license file Plumbing · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 3241 S SHIELDS AVE 1ST, Chicago, IL 60616

21392 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Dimension Development Corp.

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 4243 W 59TH ST, Chicago, IL 60629

1679150 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Dir Construction

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 1532 N FAIRFIELD AVE, Chicago, IL 60622

1591686 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Direct Heating & Cooling

Official license file From the official license file Heating & cooling · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 2146 W CHICAGO AVE, Chicago, IL 60622

1243542 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Discovery Heating And Cooling

Official license file From the official license file Heating & cooling · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 10749 S AVENUE M, Chicago, IL 60617

1771425 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Div Of Mlo Invest Inc

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 5559 W HENDERSON ST, Chicago, IL 60641

62139 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Diversified Interior Systems

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 10442 S INDIANA AVE, Chicago, IL 60628

1894688 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Divine Painting & Decorating

Official license file From the official license file Painting · City of Chicago Department of Business Affairs and Consumer Protection · Specialty scope: Painting & Surface Finishing

Registered address: 1517 S KARLOV AVE, Chicago, IL 60623

1545893 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Divine Restoration & Construction Inc

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 3333 W ARTHINGTON ST, Chicago, IL 60624

1379855 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Dj Construction

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 4132 W WASHINGTON BLVD 1, Chicago, IL 60624

1228137 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Djs Remodeling

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 3353 N ALBANY AVE, Chicago, IL 60618

1244578 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Dlm Heating & Cooling Service & Inst

Official license file From the official license file Heating & cooling · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 2137 N AUSTIN AVE REAR, Chicago, IL 60639

1196501 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

+1 more registration for this business
  • 1903568 · 6003 S KEDZIE AVE 1ST, Chicago, IL 60629
No public phone or website on record.
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Dmc's Improvement

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 11044 S MORGAN ST, Chicago, IL 60643

1070051 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Dmoreno Construction Inc

Official license file From the official license file General contracting · City of Chicago Department of Business Affairs and Consumer Protection

Registered address: 5062 W CORNELIA AVE, Chicago, IL 60641

1473314 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.
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Frequently Asked Questions — Cook County, IL

How are licensed trade credentials verified in Cook County, Illinois?

Records across Cook County are sourced directly from the Illinois Department of Public Health & Department of Financial and Professional Regulation (IL IDPH / IDFPR). Illinois Plumbing License Law (225 ILCS 320), Illinois Roofing Industry Licensing Act (225 ILCS 335), and Municipal Contractor Registration Ordinances

Which municipalities are covered in the Cook County directory?

Cook County coverage includes Chicago, Evanston, Schaumburg, Arlington Heights, Palatine, Skokie, Des Plaines, Orland Park, Tinley Park, Oak Lawn, with County Seat in Chicago.

Are licensed contractors in Cook County, IL required to carry insurance and surety bonds?

Yes. Under Illinois licensing authority regulations, licensed trade contractors typically must maintain active Commercial General Liability insurance, appropriate surety bonds, and state Workers' Compensation coverage before pulling municipal permits.

Other Counties in Illinois

Before the first call

  • Describe the job and ask whether it is within their scope and service area.
  • Check the credential with its issuing authority and ask what applies where the work will happen.
  • Ask about insurance, availability, who will do the work, and a written scope.
  • Ask about callout fees, labor or fixed rates, materials, cancellation and any estimate charge.
Prepare a project brief

Verification Overview & Key Takeaways: How to Check Official Credentials

HomeCrafto displays source records with different scopes, including licenses, registrations, municipal permits and community records. A source entry is not proof of qualification for your job. Before signing a work order or paying a deposit, homeowners should confirm that the contractor’s credential number is active, verify that the license classification covers the specific trade scope required for the job, and request a current Certificate of Insurance (COI) directly from the issuing insurance carrier. Independent verification protects your property and ensures compliance with local building codes.

How do you verify a contractor license number and insurance on official portals (FAQ)?

You can verify active license standing and consumer protection rules directly through official government portals, including Washington L&I Contractor Verify, the California Contractors State License Board (CSLB), the Connecticut eLicense Portal, USA.gov State Consumer Protection Offices, and FTC Home Improvement Consumer Guidance. Always confirm municipal permit requirements with your local building department before work begins.