Illinois General Contractor License Requirements: No State License, the Local & Chicago Rules & the Statewide Roofing License (2026)

If you are planning to run a general contractor business in Illinois, the most important thing to understand is that there’s no statewide general contractor license to earn – and no state board for general contracting. Illinois hands contractor licensing to its cities and counties, so where you work determines what you need. A contractor in Chicago faces one of the most stringent local programs in the Midwest, while a suburban or downstate contractor deals with a patchwork of separate municipal registrations. The state steps in for only two trades – roofing and plumbing – and for workers’ compensation. This guide explains how Illinois’s decentralized system works and how to get licensed in the jurisdictions that matter.

Some states require an exam-based state license; Illinois leaves general contracting to local governments. Nationally, the construction field is large and growing. According to the U.S. Bureau of Labor Statistics (Occupational Employment and Wage Statistics, May 2025), there are roughly 380,360 construction managers, 812,210 first-line supervisors of construction trades, 146,720 construction and building inspectors, and about 1,096,780 construction laborers across the country. Employment of construction managers is projected to grow 9% from 2024 to 2034 – much faster than the average for all occupations.

In Illinois specifically, the BLS reports about 19,160 construction managers (median pay $109,160), 19,340 first-line construction supervisors ($105,750), 2,560 construction and building inspectors ($78,340), and roughly 35,940 construction laborers ($60,690) – a large, high-wage market anchored by metro Chicago. This guide draws its requirements from the official sources: the City of Chicago Department of Buildings, IDFPR, and IDPH.

Quick Answer: Do You Need a General Contractor License in Illinois?

Not from the state – Illinois does not issue a statewide general contractor license. Instead, you license or register locally with the city or county where you work. There is no state board for general contracting, so the answer depends entirely on your jurisdiction.

The dominant program is the City of Chicago Department of Buildings general contractor license, issued in five classes (A through E) based on the value of the projects you take on, under Chicago Municipal Code Chapter 4-36. Outside Chicago, most municipalities and counties – Cook County, the collar counties (DuPage, Lake, Will, Kane, McHenry), and downstate cities like Springfield, Peoria, Rockford, and Champaign – run their own registration ordinances with widely varying rules. The only construction trades Illinois licenses at the state level are roofing (through IDFPR, required anywhere in the state) and plumbing (through IDPH). So a general contractor doesn’t get a state license – they license in each jurisdiction where they build, plus hold the state roofing or plumbing license if their scope includes those trades.

Who Regulates General Contractors in Illinois?

Illinois is unusual: there’s no state contractor licensing board for general contractors. Regulation is split between local governments and, for two trades, the state:

• City and county building departments: License or register general contractors – the City of Chicago Department of Buildings runs the dominant program, and Cook County, the collar counties, and downstate cities each have their own registration ordinances
• Illinois Department of Financial and Professional Regulation (IDFPR): Licenses roofing contractors statewide under the Roofing Industry Licensing Act
• Illinois Department of Public Health (IDPH): Licenses plumbers and plumbing contractors statewide
• Illinois Workers’ Compensation Commission: Oversees the state’s mandatory workers’ compensation system

Key contacts:

• City of Chicago Department of Buildings: chicago.gov; the dominant GC licensing authority
• IDFPR (roofing): idfpr.illinois.gov
• IDPH (plumbing): dph.illinois.gov
• Business registration: Illinois Secretary of State

Because there’s no statewide GC license, the practical first step for any Illinois general contractor is to identify the jurisdictions where you’ll work and learn each one’s rules – they genuinely differ.

The No-State-License Rule: Licensing Is Local

Illinois is one of only a handful of states with no statewide general contractor license. There is no state agency that licenses or registers general contractors for residential or commercial construction across Illinois. Instead, each municipality (and some counties) decides whether and how to license contractors who work within its boundaries.

What This Means for Contractors

For a general contractor, this decentralized system has real consequences:

• You license where you build. A credential that satisfies one municipality may be worthless in the next, so you register or license in each jurisdiction where you work.
• Requirements vary widely. Classifications, fees, insurance minimums, bonds, and exams differ city to city, so there’s no single checklist that covers the whole state.
• Chicago is a world of its own. The city runs one of the most extensive municipal contractor licensing systems in the country – treat work within city limits as requiring dedicated licensing research and lead time.

The upside is that many smaller jurisdictions have light requirements (sometimes just registration and proof of insurance). The challenge is tracking multiple jurisdictions if you work across the Chicago metro or downstate.

Workers’ Compensation

The one construction insurance requirement that is statewide: under the Illinois Workers’ Compensation Act, essentially all employers must carry workers’ compensation insurance for their employees. This applies regardless of the local licensing rules, and Illinois enforces it seriously – operating without required coverage carries significant penalties. Set up coverage before you hire.

Chicago: The Dominant Local Program

Because Chicago is where most Illinois general contractor licensing activity happens, it’s worth understanding in detail. The City of Chicago Department of Buildings licenses general contractors under Municipal Code Chapter 4-36, and its requirements are among the most demanding for any local program in the region.

The Five General Contractor Classes

Chicago issues the general contractor license in five classes, tied to the maximum value of the projects you can take on. Under the current 2026 schedule (the city doubled the Class B, C, and D project limits for 2026), the classes are:

• Class E – projects up to $500,000 ($1,000,000 per-occurrence insurance; reported ~$300 fee)
• Class D – projects up to $4,000,000 ($2,000,000 insurance; reported ~$900 fee)
• Class C – projects up to $10,000,000 ($2,000,000 insurance; reported ~$1,300 fee)
• Class B – projects up to $20,000,000 ($3,000,000 insurance; reported ~$1,800 fee)
• Class A – unlimited project value ($5,000,000 insurance; reported ~$3,500 fee)

You choose the class that matches your largest expected project, and the insurance requirement scales with it. Fees and limits are set by the city and were updated for 2026 (with annual CPI-based adjustments starting in 2027), so confirm the current figures directly with the Department of Buildings before applying.

Insurance, Bond, and Application

Chicago’s insurance requirement scales by class – from $1,000,000 per occurrence at Class E up to $5,000,000 per occurrence at Class A (Classes C and D both require $2,000,000 as of 2026, and Class B $3,000,000), with the City of Chicago explicitly named as an additional insured on the certificate of insurance, from a carrier rated B+ or better by A.M. Best. A surety bond and proof of workers’ compensation are also required. You apply through the city (via Continental Testing Services) with your business documentation, a statement of financial solvency, insurance certificates, references, and the class-based fee (reported from around $300 at Class E up to $3,500 at Class A). Chicago also separately licenses electrical, plumbing, refrigeration, and fire-protection contractors, each with its own city exam and requirements.

Beyond Chicago: Suburbs, Counties, and Downstate

Outside Chicago, requirements drop off sharply but vary widely. Cook County requires contractor registration through its Building and Zoning department. The collar counties – DuPage, Lake, Will, Kane, and McHenry – and the many suburbs within them each set their own registration ordinances, often requiring a local business registration, proof of insurance, and a fee. Downstate cities like Springfield, Peoria, Rockford, and Champaign likewise run their own contractor registration programs.

The practical takeaway: before bidding a project, check the specific city or county’s building or licensing department for its requirements – registration, insurance, bond, and fees. Many suburban registrations are straightforward (insurance plus a fee), but you must complete each one where you work, and some accept a neighboring jurisdiction’s credential while others don’t. Carrying at least $1,000,000 per occurrence in general liability satisfies most municipal registrations and commercial owner contracts.

The Two Statewide Trade Licenses

While general contracting is unlicensed at the state level, two specialty trades are the exception – Illinois licenses them statewide, and the credential applies everywhere regardless of the local rules.

Roofing (IDFPR)

Illinois is one of the few states with a statewide roofing license. Any contractor performing roofing work for compensation anywhere in Illinois must hold a Roofing Contractor License issued by the Illinois Department of Financial and Professional Regulation (IDFPR) under the Roofing Industry Licensing Act (225 ILCS 335). There are two classes:

• Limited – residential roofing only
• Unlimited – residential and commercial roofing

The license requires passing an IDFPR exam, carrying general liability insurance (a statutory minimum of $250,000 per occurrence / $500,000 aggregate), and posting a surety bond ($10,000 for Limited and $25,000 for Unlimited). Continuing education applies to the Unlimited license. If your general contracting scope includes roofing, you (or your roofing subcontractor) must hold this state license.

Plumbing (IDPH)

Plumbing is licensed statewide through the Illinois Department of Public Health (IDPH) under the Illinois Plumbing License Law (225 ILCS 320). All plumbers – including apprentices and contractors – must be licensed. Note the two different renewal dates: individual plumber licenses renew by April 30, while the plumbing contractor registration renews by September 30. A general contractor whose scope includes plumbing must use a licensed plumber. Note that Chicago also has its own separate plumbing contractor license on top of the state credential.

Illinois General Contractor Requirements at a Glance

Requirement	Detail
State GC license	None – licensing is local (city/county)
Dominant program	City of Chicago Department of Buildings (5 classes, A-E)
Statewide threshold	None (local rules apply)
Roofing	State IDFPR license required statewide (Limited/Unlimited)
Plumbing	State IDPH license required; contractor reg. renews Sept 30
Electrical / HVAC	Regulated locally (Chicago has its own licenses)
General liability insurance	Local requirement (commonly $1M+; Chicago scales $1M-$5M)
Workers’ compensation	Required statewide for all employers
Reciprocity	None (no state license)
Renewal	Local (Chicago annual; state plumbing contractor reg. by Sept 30)
Governing law	Local ordinances; 225 ILCS 335 (roofing); 225 ILCS 320 (plumbing)

How to Get a General Contractor License in Illinois: Step by Step

Because licensing is local, the path centers on your jurisdictions. Here’s the general process.

Step 1 – Map Your Jurisdictions

Determine every city and county where you plan to work and pull each one’s contractor requirements from its building or licensing department. If you’ll work in Chicago, plan for its detailed program and lead time; for the suburbs and downstate, expect separate registrations.

Step 2 – Get Insurance and Workers’ Comp

Obtain general liability insurance meeting the highest limit you’ll need (at least $1,000,000 per occurrence covers most jurisdictions; Chicago scales higher by class), and set up workers’ compensation – required statewide for any employer.

Step 3 – Apply Locally (Chicago or Your City)

For Chicago, choose the correct general contractor class (A through E) for your project values and apply through the city with your insurance, bond, financial statement, references, and fee. For other jurisdictions, complete each municipality’s registration.

Step 4 – Add State Trade Licenses If Needed

If your scope includes roofing, obtain the IDFPR roofing license (Limited or Unlimited). If it includes plumbing, hold or subcontract to an IDPH-licensed plumber. These state licenses apply regardless of the local rules.

Step 5 – Maintain and Renew

Renew each local license on its schedule (Chicago is annual), keep your state trade licenses current (state plumbing renews by April 30), and keep your insurance and workers’ comp continuously active. Repeat registrations for each new jurisdiction you enter.

How Much Does an Illinois General Contractor License Cost?

Cost Item	Amount
Chicago GC license (by class)	Reported ~$300 (Class E) to ~$3,500 (Class A) per year
Suburban/county registration	Varies widely (reported ~$50-$300+)
IDFPR roofing license (if roofing)	Exam, bond, and license fees (state)
General liability insurance	Premium – varies (limits set by class/city)
Workers’ compensation	Premium – varies (required for employers)
Surety bond (Chicago/local)	Premium – a fraction of the bond amount

Because costs are set locally, there’s no single statewide figure. In Chicago, the general contractor license fee scales by class – reported from around $300 for Class E up to $3,500 for Class A annually – plus your bond premium and scaled insurance. Suburban and county registrations are typically cheaper (often under a few hundred dollars) but you pay in each jurisdiction. Add the state roofing license if you do roofing. Confirm current fees directly with each jurisdiction (and IDFPR/IDPH for the trades), since they vary and change.

License Renewal

Renewal in Illinois is handled by each licensing authority, so the cycle depends on where you’re licensed. Chicago general contractor licenses are valid one year and renew annually. Suburban and county registrations generally renew annually as well, each on its own schedule. The state plumbing contractor registration renews by September 30 (individual plumber licenses renew by April 30), and the state roofing license renews on the IDFPR cycle.

Because you may hold credentials in several jurisdictions plus state trade licenses, tracking multiple renewal dates is part of doing business in Illinois. There’s generally no continuing education for local GC licenses, though the state roofing Unlimited license does have CE. Keep your insurance and workers’ comp continuously active across all of them – a lapse can suspend your ability to work or pull permits in that jurisdiction.

Does Illinois Have General Contractor License Reciprocity?

No – because Illinois has no statewide general contractor license, there’s nothing to reciprocate, and the state has no general contractor reciprocity agreements. Any contractor, in-state or out-of-state, must meet the full requirements of each local jurisdiction where they work. An out-of-state contractor doesn’t get a shortcut into Chicago or any Illinois municipality – you complete that jurisdiction’s registration or licensing like everyone else.

For the state-licensed trades (roofing through IDFPR, plumbing through IDPH), reciprocity or endorsement arrangements are generally limited, and Illinois is not known for broad trade reciprocity. If you hold a roofing or plumbing license in another state, contact IDFPR or IDPH to confirm how Illinois treats it. For general contracting itself, plan to meet each jurisdiction’s requirements directly.

Specialty Trade Licenses in Illinois

Illinois’s approach to the trades is a mix: two are state-licensed, and the rest are local. A general contractor coordinates licensed trade contractors for regulated work.

Electricians

Electrical contracting is generally regulated locally in Illinois – there’s no statewide electrician license. Chicago requires its own Electrical Contractor License (with a Chicago-specific exam covering the Chicago Electrical Code, and a licensed Master Electrician), and other cities set their own rules. A general contractor engages a locally licensed electrical contractor for electrical scope.

Plumbers

Plumbing is one of the two state-licensed trades, through the Illinois Department of Public Health (IDPH). All plumbers must be licensed statewide, and Chicago adds its own city plumbing contractor license. A general contractor uses a licensed plumber for plumbing work.

HVAC

HVAC is generally regulated locally in Illinois (with some state-level registration), and Chicago licenses refrigeration contractors separately. Any technician handling refrigerant also needs federal EPA Section 608 certification. A general contractor subcontracts HVAC scope to an appropriately licensed contractor for the jurisdiction.

If your project involves roofing or plumbing, the state license is required regardless of location; for electrical and HVAC, follow the local jurisdiction’s rules and verify each subcontractor’s credentials before contracting.

Penalties for Unlicensed Contracting in Illinois

Because general contractor licensing is local, penalties are set and enforced by each jurisdiction – but they’re real, and the state trades carry their own penalties:

• Local enforcement – Cities can issue stop-work orders, deny or revoke permits, and impose fines for contracting or pulling permits without the required local license
• Permit denial – The most immediate consequence is practical: without a valid local license, the building department won’t issue permits, halting your project
• State trade penalties – Unlicensed plumbing work carries state fines (commonly cited at $1,000 to $5,000), and roofing violations can reach up to $5,000 per offense under state law
• Workers’ comp penalties – Operating without required workers’ compensation is a serious violation with significant state penalties

You can verify a roofing or plumbing license through IDFPR or IDPH, and local licenses through the relevant city. Because the consequences are largely local and permit-based – plus state penalties for the licensed trades – the practical rule is to get licensed in each jurisdiction where you build, hold the state roofing or plumbing license if your scope requires it, and keep workers’ comp active statewide.

How Much Does a General Contractor Make in Illinois?

General contractor earnings in Illinois are strong, anchored by the large, high-wage Chicago metro and steady demand across the state. As a general reference point for the broader construction workforce, the U.S. Bureau of Labor Statistics tracks construction managers and related occupations, and self-employed general contractors’ income depends heavily on their work mix, project size, and how many jobs they run. For a closer look at how pay scales with role, experience, and region, this contractor and construction manager salary guide breaks the numbers down.

Illinois General Contractor Salary by Role

Because “general contractor” isn’t a single wage category, the closest picture comes from the related construction roles the BLS tracks in Illinois. Construction managers – the role most like a general contractor – earn a median well into six figures:

Role	Median Hourly Wage	Median Annual Wage
Construction Managers (GC-equivalent)	$52.48/hr	$109,160
First-Line Construction Supervisors	$50.84/hr	$105,750
Construction & Building Inspectors	$37.66/hr	$78,340
Construction Laborers	$29.18/hr	$60,690

Illinois’s construction manager median of about $109,160 reflects a large, unionized, high-wage market – and even construction laborers earn a strong median of $60,690, among the higher figures nationally. Because Chicago’s class-based license unlocks larger project values (up to unlimited at Class A), moving up the classes – and mastering the multi-jurisdiction landscape – is a clear path to higher earning potential in Illinois’s busy market.

Tips for Growing Your General Contracting Business in Illinois

A successful general contracting business is built on reputation, reliable delivery, and strong client and subcontractor relationships. Beyond staying licensed and insured, the contractors who thrive treat the business side – bidding, scheduling, and project management – as seriously as the build. Here are strategies to help you grow your general contracting business in Illinois’s market:

Map every jurisdiction you’ll work in. Since licensing is local, list each city and county and get registered or licensed in each. Chicago especially requires dedicated research and lead time.

Pick the right Chicago class – and move up. Chicago’s classes cap your project value. Choose the class that fits your work, and step up to a higher class (toward Class A’s unlimited value) as you grow.

Hold the state roofing license if you roof. Uniquely, roofing requires a statewide IDFPR license anywhere in Illinois. If roofing is in your scope, get the Limited or Unlimited license – or use a licensed roofing subcontractor.

Keep workers’ comp airtight. Illinois mandates workers’ comp for all employers with serious penalties for non-compliance. Line it up before you hire and keep it continuous.

Carry $1M+ in general liability. At least $1,000,000 per occurrence satisfies most municipal registrations and owner contracts; Chicago scales higher by class. Carry what your biggest jurisdiction and project require.

Coordinate licensed trade subs. Plumbing (IDPH) and roofing (IDFPR) are state-licensed; electrical and HVAC are local. Build a bench of properly licensed subs and verify each credential to keep projects compliant.

Bid and manage jobs with the right tools. Illinois’s competitive, high-wage market rewards fast, accurate estimates and tight project management. General contractor software handles estimating, scheduling, invoicing, and client communication in one place – so you spend more time building and less on paperwork. Make it easy for clients to reach and book you with online booking.

Build your reputation online. Most Illinois clients research contractors before hiring. A strong online presence, verifiable local licenses, and clear reviews are among the highest-return investments for winning larger projects.

Illinois vs. Neighboring States: How Does Licensing Compare?

State	State GC License?	Model	Exam Required
Illinois	No – local (city/county)	Local + 2 state trades	Local (Chicago exam)
Indiana	No statewide GC license	Local licensing	Local exams
Wisconsin	Yes – dwelling contractor cert	State certification	Course/registration
Iowa	Registration (Div. of Labor)	State registration	No exam
Missouri	No statewide GC license	Local licensing	Local

Illinois stands out in the region for having no statewide general contractor license – like Indiana and Missouri, it takes a local approach, while Wisconsin and Iowa have state-level programs. For a general contractor, that makes Illinois both simpler (no state exam or license) and more complex (you deal with each city separately, and Chicago is demanding). Its distinctive twist is the statewide roofing license – one of the few in the country – alongside statewide plumbing. The practical trade-off: less state bureaucracy for general contracting, but more jurisdiction-by-jurisdiction homework and two trade-specific state licenses to watch.

Ready to Build Your Illinois Contracting Business?

Illinois works differently from most states: there’s no statewide general contractor license, so success comes from mastering the local landscape. Map every jurisdiction where you’ll build, get licensed in each (Chicago especially, with its class-based system), carry the general liability insurance cities expect, keep your statewide workers’ comp active, and hold the state roofing or plumbing license if your scope requires it. Do that, and you can build a strong contracting business in one of the largest, highest-wage construction markets in the country.

We have built tools specifically for general contractors – estimating, scheduling, invoicing, project management, and client communication all in one place so you can win more bids and spend less time on paperwork.

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