Illinois Home Improvement Contractor Rules

Home improvement contracting in Illinois operates under a distinct regulatory framework that separates residential repair and remodeling work from new commercial construction. The Illinois Home Repair and Remodeling Act establishes baseline consumer protection requirements for contractors who perform work on existing residential properties, covering everything from written contract mandates to bond and insurance obligations. Understanding these rules matters because violations can expose contractors to civil liability, license suspension, and criminal penalties under Illinois consumer fraud statutes.

Definition and scope

The Illinois Home Repair and Remodeling Act (815 ILCS 513) governs contracts for repair, replacement, remodeling, alteration, conversion, modernization, improvement, or addition to residential real property. "Residential" in this context means owner-occupied single-family homes and residential structures of 4 units or fewer. The Act applies when the contract price exceeds amounts that vary by jurisdiction.

What falls within scope:

• Roof replacement on a single-family home
• Kitchen or bathroom remodeling
• HVAC installation or replacement in a residence
• Exterior painting, siding, or window replacement
• Basement waterproofing or structural repair

What this page does not cover: Commercial construction, new residential construction on vacant lots, and public works projects are outside the scope of the Home Repair and Remodeling Act. Commercial work is governed by separate licensing and procurement frameworks — see Illinois Commercial Construction Codes and Illinois Public Construction Bidding Rules for those distinctions. Work performed in municipalities with their own home improvement contractor ordinances — most notably the City of Chicago, which maintains the Chicago Home Repair License under Municipal Code Chapter 4-36 — may layer additional local requirements on top of state law.

The geographic scope of this page is the State of Illinois. Federal contractor registration requirements (SAM.gov, Davis-Bacon Act applicability) are not addressed here.

How it works

The Home Repair and Remodeling Act creates 4 primary compliance obligations for contractors:

1. Written contract requirement. Any agreement with a contract price above amounts that vary by jurisdiction must be in writing before work begins. The contract must include the contractor's name, address, and registration number (where required), a description of the work, the total price or basis for calculating it, and a payment schedule.

2. Right of rescission notice. When a contract is solicited at the consumer's home, Illinois law — consistent with the Federal Trade Commission's cooling-off rule — requires a 3-business-day cancellation notice. The contractor must provide 2 copies of a cancellation notice at the time of signing.

3. Bond and insurance disclosure. Contractors must disclose whether they carry liability insurance and whether they are bonded. See Illinois Construction Bonding Requirements and Illinois Contractors Insurance Requirements for minimum coverage thresholds applicable by trade.

4. Permit responsibility. Illinois law does not relieve the contractor of responsibility for obtaining required permits simply because a homeowner waives them. Building permits for structural, electrical, plumbing, and HVAC work remain required under local building codes. The Illinois Construction Permits and Approvals page covers the permit process in detail.

Enforcement sits primarily with the Illinois Attorney General's Consumer Protection Division, which can investigate violations of the Act as deceptive business practices under the Illinois Consumer Fraud and Deceptive Business Practices Act (815 ILCS 505).

Common scenarios

Scenario 1 — Roofing replacement. A contractor replaces a residential roof for amounts that vary by jurisdiction. The Act requires a written contract, payment schedule, and lien waiver provisions. Because roofing involves structural elements, a local building permit is typically required. Illinois does not maintain a statewide roofing contractor license, but Chicago and other municipalities do. See Illinois Roofing Contractor Licensing for the trade-specific overlay.

Scenario 2 — Bathroom remodel with plumbing. Work touching water supply or drainage lines requires a licensed plumber under the Illinois Plumbing License Law (225 ILCS 320). A general home improvement contractor who subcontracts plumbing must ensure the subcontractor holds a valid state plumbing license. Details on subcontractor obligations appear at Illinois Construction Subcontractor Requirements.

Scenario 3 — Dispute over incomplete work. If a homeowner withholds final payment or a contractor abandons a job, the Illinois Mechanics Lien Act (770 ILCS 60) governs the contractor's right to place a lien on the property. Lien rights for residential work must be perfected within specific timeframes — the Illinois Mechanics Lien Process page covers those deadlines.

Scenario 4 — Lead paint in pre-1978 housing. Disturbance of lead-based paint during renovation triggers EPA Renovation, Repair and Painting (RRP) Rule requirements, including certified renovator presence on site. Illinois has adopted aligned state rules through the Illinois Department of Public Health. See Illinois Lead Paint Regulations Construction.

Decision boundaries

The boundary between a licensed trade contractor and a general home improvement contractor depends on the nature of the primary scope of work:

Illinois does not issue a single statewide "home improvement contractor" license as of the most recent IDFPR licensing schedule. The absence of a state credential does not eliminate local registration obligations. The City of Chicago requires a separate Home Repair License for any contractor performing residential repair work within city limits, and failure to hold it can void contract enforceability under Chicago Municipal Code §4-36.

For contractors who handle both residential and commercial work, the Illinois General Contractor Licensing page outlines how scope-of-work determines which regulatory track applies.

References

• Illinois Home Repair and Remodeling Act, 815 ILCS 513
• Illinois Consumer Fraud and Deceptive Business Practices Act, 815 ILCS 505
• Illinois Plumbing License Law, 225 ILCS 320
• Illinois Mechanics Lien Act, 770 ILCS 60
• Illinois Department of Financial and Professional Regulation (IDFPR) — License Lookup
• Illinois Attorney General — Consumer Protection Division
• EPA Renovation, Repair and Painting (RRP) Rule
• City of Chicago Municipal Code, Chapter 4-36 — Home Repair License