Solar Panels Permit Requirements in Union, IL
Village of Union handles its own building permits (McHenry County only covers unincorporated areas, not incorporated villages). Building Inspector is available one hour per week, Tuesdays 3 PM to 4 PM. The village has not published its adopted residential code edition online; rules below use IRC 2021 as baseline (the most common adoption in the Chicago metro). No published fee schedule, no online application portal. Apply in person during Village Hall hours or email permits@unionillinois.org. Illinois state plumbing code (IDPH-licensed plumbers) and electrical licensing requirements apply regardless of local code adoption.
By Joey, Founder · Last verified April 18, 2026 · How we research →
When you need a Solar Panels permit in Union
Rooftop solar PV systems require a building permit and electrical permit in Union, IL under 2021 IRC R324 and 2021 NEC Article 690. Illinois law (220 ILCS 75) prohibits HOAs and most local rules from blocking solar, but the village still inspects the structural attachment and electrical interconnection. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
Ground-mounted solar PV systems require a building permit and electrical permit in Union, IL under 2021 IRC and 2021 NEC Article 690. Foundation, racking, and zoning setbacks all apply. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
Energy storage systems (e.g., Tesla Powerwall, Enphase) require a building and electrical permit in Union, IL under 2021 IRC R328 and 2021 NEC Article 706. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
Solar Panels Permit Costs: Union vs. Nearby
| City | Estimated Fee |
|---|---|
| Union | N/A |
| Chicago | $150 – $500 |
| Aurora | $150 – $500 |
| Joliet | $150 – $500 |
Fees shown are estimates based on local building code data. Actual fees may vary based on project scope and valuation. See all Union permit costs →
Zoning Considerations
Ground-mounted solar arrays are subject to zoning setback and height restrictions in most jurisdictions. Rooftop systems rarely trigger zoning review unless in a historic district. Check with your planning department for ground-mounted installations.
Estimated Project Timeline in Union
Here's a typical timeline for a solar panels project in Union, IL:
Timeline is based on Union's typical about 2 weeks permit processing time. Actual timelines vary by project complexity, completeness of application, and current department workload.
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Frequently Asked Questions
Contact Union's building department for current Solar Panels permit fee information. Fees typically vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Solar Panels projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Union can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Solar Panels permits in Union is about 2 weeks. More complex projects may take longer if plan review is required.
Learn More About Solar Panels Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Solar Panels Guide →