Do I need a permit for solar panel installation in Chicago?
Yes. In Illinois, solar panel installation generally requires a permit, and Chicago is no exception.
Most Illinois jurisdictions require both a building and an electrical permit for rooftop or ground-mount solar, plus a separate utility interconnection approval. Many local codes require roof structural verification and fire-access setbacks. Those requirements come from the code edition your municipality or county has adopted, not from a statewide Illinois residential code. A residential rooftop PV system (inverter output 13.44 kW or less) is handled through the Express Permit Program but always requires a permit plus architect/engineer drawings; there is no self-permit exemption. You need BOTH a licensed general contractor (Class A-E) and a licensed general electrical contractor, and the installer must hold an ICC Distributed Generation Installer certification. Wiring must meet the 2018 Chicago Electrical Code Article 690. You generally should not install panels on a roof that will soon need replacement; a visibly deteriorated roof may trigger a required condition evaluation or roofing permit first.
Documents you may need
- Site/roof plan showing panel layoutrequired
- Electrical single-line diagramrequired
- Structural details or engineer letter for roof loadingLikely required
- Equipment spec sheets (modules, inverter)required
- Express Permit Program application (Small-Scale Solar Photovoltaic System)required
- Drawings and structural calculations prepared by an Illinois-licensed architect or structural engineerrequired
- Electrical drawing signed by a Chicago-licensed supervising electrician or Illinois-licensed design professionalrequired
- Illinois Commerce Commission (ICC) Distributed Generation Installer certification numberrequired
- At least one existing-condition photograph of the roofrequired
Possible inspections
- Rough electrical inspection
- Structural/mounting inspection
- Final inspection
- Electrical inspection of PV wiring, grounding and bonding by a Department of Buildings inspector
- Final solar installation inspection
Frequently asked questions
- Do I need a permit for solar panel installation in Chicago?
- Yes. In Illinois, solar panel installation generally requires a permit, and Chicago is no exception. Most Illinois jurisdictions require both a building and an electrical permit for rooftop or ground-mount solar, plus a separate utility interconnection approval. Many local codes require roof structural verification and fire-access setbacks. Those requirements come from the code edition your municipality or county has adopted, not from a statewide Illinois residential code. A residential rooftop PV system (inverter output 13.44 kW or less) is handled through the Express Permit Program but always requires a permit plus architect/engineer drawings; there is no self-permit exemption. You need BOTH a licensed general contractor (Class A-E) and a licensed general electrical contractor, and the installer must hold an ICC Distributed Generation Installer certification. Wiring must meet the 2018 Chicago Electrical Code Article 690. You generally should not install panels on a roof that will soon need replacement; a visibly deteriorated roof may trigger a required condition evaluation or roofing permit first.
- 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.