Cook County, Illinois

Licensed Trade Records in Cook County, Illinois

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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:

Chicago 2900

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)17 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.

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J2 Underground Inc.

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

Registered address: 1622 N KEDZIE AVE 1ST, Chicago, IL 60647

1964377 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Ja Construction

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

Registered address: 1840 N KEDVALE AVE 2ND FL., Chicago, IL 60639

1548038 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jack's Home Improvement

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

Registered address: 7751 S SOUTH SHORE DR 3H, Chicago, IL 60649

1124104 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

+1 more registration for this business

1381209 · 1446 W 105TH ST, Chicago, IL 60643

No public phone or website on record.

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Jack's Mechanical

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

Registered address: 2544 W 79TH PL, Chicago, IL 60652

1247409 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jack's Mechanical Corp

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

Registered address: 2544 W 79TH PL, Chicago, IL 60652

1546215 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jaimes Construction

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

Registered address: 1427 N SPRINGFIELD AVE, Chicago, IL 60651

1596023 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jalisco Construction Co.

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

Registered address: 2800 W 46TH ST, Chicago, IL 60632

1245968 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jamco Construction

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

Registered address: 1924 N DRAKE AVE 1, Chicago, IL 60647

1645318 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jan Czekaj & Zofia Czekaj

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

Registered address: 5652 N OVERHILL AVE # 1ST, Chicago, IL 60631

1224515 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jan Home Remodeling

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

Registered address: 3705 N ODELL AVE, Chicago, IL 60634

1354413 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jan Window & Door Replacement

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

Registered address: 3604 N NORA AVE, Chicago, IL 60634

1275589 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jan's Plumbing

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

Registered address: 5429 N LUDLAM AVE, Chicago, IL 60630

1248544 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Janik Constuction Inc

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

Registered address: 5143 S LATROBE AVE, Chicago, IL 60638

1226635 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Janobryk Construction

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

Registered address: 5900 W GIDDINGS ST, Chicago, IL 60630

1621948 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jantz Construction

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

Registered address: 3301 W 108TH ST, Chicago, IL 60655

1336738 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Javier's Glass CO

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

Registered address: 5029 S ASHLAND AVE 1ST, Chicago, IL 60609

1954877 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jbm Mechanical Inc.

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

Registered address: 5647 N NEVA AVE, Chicago, IL 60631

1519390 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jc & Company

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

Registered address: 3016 N CLYBOURN AVE, Chicago, IL 60618

1169772 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jc Custom Kitchen Cabinets

Official license file From the official license file Carpentry · City of Chicago Department of Business Affairs and Consumer Protection · Specialty scope: Carpentry, Joinery & Millwork

Registered address: 1133 N KILBOURN AVE, Chicago, IL 60651

1301276 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jc Just Contracting Inc.

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

Registered address: 2327 W NELSON ST, Chicago, IL 60618

1576926 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jcc Painting

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: 5516 S CALIFORNIA AVE 1ST, Chicago, IL 60629

80798 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jd Construction

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

Registered address: 2600 W 59TH ST 1ST, Chicago, IL 60629

1883641 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jefferson Heating & Cooling

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

Registered address: 8139 S MORGAN ST, Chicago, IL 60620

21141 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →

No public phone or website on record.

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Jefferson's General Contracting

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

Registered address: 5012 W HURON ST, Chicago, IL 60644

1142243 · 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

DuPage County

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.