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ILTrade-only (no statewide GC license)

Illinois Contractor License & Insurance Requirements

Illinois has no statewide GC license. Plumbers (IDFPR), roofers (IDFPR Roofing Contractor License), and most electricians (city/county) are licensed by trade. Chicago has its own GC and trade-licensing structure under DOB.

License threshold
Trade-specific. Plumber: any work. Roofer: any work over $500 in labor + materials.
WC trigger
All employers, all sizes (820 ILCS 305 §3)
Bond
Roofing Contractor: $10K bond statewide. Plumbers: bond per IDFPR. No statewide GC bond.
License authority: No statewide GC license. Trades licensed by IDFPR (plumbers) and local (electrical). Roofing licensed statewide. license verification portal.

Workers' comp posture

Illinois Workers' Compensation Act applies to all employers from first hire. Sole proprietors, partners, and corporate officers may elect to be excluded but must file the exclusion. No employee-count threshold.

Common public-bid insurance minimums

These are limits commonly required on IL public-works prequalification. They are NOT a state-mandated minimum — verify against your specific procurement spec or contract.

General Liability
$1M per occurrence / $2M aggregate (typical IDOT + CMS + university spec)
Workers' Comp
Statutory + $1M Employer's Liability
Auto Liability
$1M combined single limit

Illinois state-specific quirks

3 pitfalls every IL GC misses

Forgetting the roofing license

Illinois is one of the few states that licenses roofers at the state level. A general 'we cover roofing' sub still needs the IL Roofing Contractor License — pull the IDFPR record at intake.

Chicago vs statewide differences

Chicago DOB requires its own GC license and electrical/HVAC permits — a perfectly valid state plumber license isn't enough for Chicago work.

Electrician verification gap

There is no single 'is this electrician licensed?' statewide check. Verify the municipal license matching the project city — and require that municipality on the COI as the certificate holder for permit-pulling.

Automate Illinois sub vetting

VendorShield checks every COI for Illinois compliance — license currency against No statewide GC license. Trades licensed by IDFPR (plumbers) and local (electrical). Roofing licensed statewide., WC posture, public-bid limit minimums, and 3 state-specific pitfalls flagged at intake. No more manual statute lookups.

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Frequently asked questions

Does Illinois require a state GC license?

No statewide GC license. Plumbers and roofers are licensed by the state. Electricians are licensed by city/county. Chicago licenses GCs at the city level. Always check the city of the project.

Do Illinois roofers need a state license?

Yes. The Illinois Roofing Industry Licensing Act (225 ILCS 335) requires a state license + $10K bond for any roofing work over $500. Verify at IDFPR.

How do I verify an Illinois contractor license?

Use the IDFPR License Lookup at online-dfpr.micropact.com for plumbing and roofing. For Chicago GCs use the City of Chicago Business License Lookup. For electricians, contact the project city's licensing office.

Does workers' comp apply to all Illinois employers?

Yes. The Illinois Workers' Compensation Act applies from the first hire. Sole-proprietor and corporate-officer exclusions exist but must be elected and filed.

Are Illinois prevailing-wage rules part of compliance tracking?

Yes for public-works. The Illinois Prevailing Wage Act (820 ILCS 130) requires certified payroll filed on every public-works project. Track payroll as part of the same vendor record where you store COIs.

Other states

Reference data current as of 2026-06-04. This page is informational and is not legal advice. Always verify with the linked state authority before relying on a number for procurement, prequalification, or legal use.