Do I need a permit for roof replacement or repair in Chicago?
It depends. Whether roof replacement or repair needs a permit in Chicago comes down to the details of your project.
Chicago follows the 2019 Chicago Building Code and Building Rehabilitation Code, not the IRC. On a residential building up to 4 stories with a roof pitch of at least 2:12, in-kind reroofing needs no permit, but a permit IS required for any low-slope (flat) roof, any structural repair, or a recover over two or more existing layers, so many Chicago flat-roofed two-flats and greystones do need a permit. Only a company with a valid Illinois Roofing Contractor license may perform reroofing work, and the roof cannot be permitted if the building has an unpermitted rooftop feature such as an unpermitted deck. A licensed general contractor (Class A-E) is normally required unless the owner qualifies to act as general contractor for their own primary residence. Most Illinois jurisdictions require a permit for roof replacement even when the new material is a similar weight, while like-for-like repairs of small areas may be exempt. Many local codes limit the number of roof covering layers and require an ice barrier and underlayment. Which residential code edition sets those details is decided by your municipality or county, because Illinois has no statewide residential code governing work on an existing home.
Documents you may need
- Express Permit Program application (filed online at the Department of Buildings)Sometimes required
- Illinois Roofing Contractor license number for the company doing the workrequired
- At least one existing-condition photograph of the roofSometimes required
- Illinois-licensed architect or structural engineer drawings/calculations (only if structural repairs, or recover over 2+ existing layers)Sometimes required
- Condominium association approval letter (if the building is a condo)Sometimes required
- Contractor license and insurance informationLikely required
- Roofing product/spec sheet (material and weight)Sometimes required
- Scope of work describing tear-off and re-coverrequired
Possible inspections
- Reroofing inspection by a Department of Buildings inspector (scheduled and tracked in the online Express Permit system)
- Sheathing/nailing inspection (when decking is exposed)
- Final inspection
Frequently asked questions
- Do I need a permit for roof replacement or repair in Chicago?
- It depends. Whether roof replacement or repair needs a permit in Chicago comes down to the details of your project. Chicago follows the 2019 Chicago Building Code and Building Rehabilitation Code, not the IRC. On a residential building up to 4 stories with a roof pitch of at least 2:12, in-kind reroofing needs no permit, but a permit IS required for any low-slope (flat) roof, any structural repair, or a recover over two or more existing layers, so many Chicago flat-roofed two-flats and greystones do need a permit. Only a company with a valid Illinois Roofing Contractor license may perform reroofing work, and the roof cannot be permitted if the building has an unpermitted rooftop feature such as an unpermitted deck. A licensed general contractor (Class A-E) is normally required unless the owner qualifies to act as general contractor for their own primary residence. Most Illinois jurisdictions require a permit for roof replacement even when the new material is a similar weight, while like-for-like repairs of small areas may be exempt. Many local codes limit the number of roof covering layers and require an ice barrier and underlayment. Which residential code edition sets those details is decided by your municipality or county, because Illinois has no statewide residential code governing work on an existing home.
- Who issues the permit in Chicago?
- The local building department for Chicago handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.