Registered address: 903 W 35TH ST, Chicago, IL 60609
1574318 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Cook County, Illinois
Plumbing in Cook County, Illinois
Browse 113 verified plumbing 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 plumbing records:
113 plumbing records · Cook County, IL
ChangePublic Directory Quality: Official IL IDPH / IDFPR license records across Cook County · Zero sponsored order · Never sold as a lead · How our data works →
Show registered-address map (14 records on this page)10 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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Registered address: 3145 W 111TH ST, Chicago, IL 60655
21353 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 5712 W DIVERSEY AVE, Chicago, IL 60639
1471071 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
+1 more registration for this business
- 1246451 · 4301 N KEDZIE AVE, Chicago, IL 60618
No public phone or website on record.
Registered address: 2066 N WESTERN AVE 1ST, Chicago, IL 60647
23708 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 3523 W MEDILL AVE, Chicago, IL 60647
1384235 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 2325 E 100TH ST, Chicago, IL 60617
1803158 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 2406 W WINNEMAC AVE, Chicago, IL 60625
1492717 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 5250 N BROADWAY 129, Chicago, IL 60640
81056 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 4108 W ARMITAGE AVE, Chicago, IL 60639
1650139 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 725 W 47TH ST, Chicago, IL 60609
1576778 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 725 W 47TH ST 2ND, Chicago, IL 60609
1144754 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 6505 S GREEN ST 1, Chicago, IL 60621
2027642 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Registered address: 2640 W DIVISION ST 1ST, Chicago, IL 60622
1818082 · Source dated 2026-10-20 · Service area not confirmed. · Verify on IL portal →
No public phone or website on record.
Frequently Asked Questions — Cook County, IL
How are plumbing 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 plumbing 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.
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.