Plumbing Work 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 don’t need a Plumbing permit in Union
Like-for-like replacement of a faucet, toilet, or sink in the same location does not require a plumbing permit in Union, IL. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
When you need a Plumbing permit in Union
New plumbing rough-in (adding or relocating a fixture, drain, vent, or supply line) requires a plumbing permit in Union, IL. Illinois requires the work be done by an IDPH-licensed plumber under the Illinois Plumbing License Law. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
Repairing or replacing the sewer or water service line from the house to the village main requires a plumbing permit in Union, IL. Illinois requires an IDPH-licensed plumber for this work. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
What Makes Union Different
Here's how Union's plumbing work rules stack up against the standard IRC baseline that most of the country follows.
Stricter Than the IRC
New plumbing rough-in (adding or relocating a fixture, drain, vent, or supply line) requires a plumbing permit in Union, IL. Illinois requires the work be done by an IDPH-licensed plumber under the Illinois Plumbing License Law. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
Repairing or replacing the sewer or water service line from the house to the village main requires a plumbing permit in Union, IL. Illinois requires an IDPH-licensed plumber for this work. Verify with the Village Building Inspector at (815) 923-4153 (available Tuesdays 3 PM to 4 PM) before starting work.
1 rule match the IRC baseline, no surprises there.
Plumbing Work Permit Costs: Union vs. Nearby
| City | Estimated Fee |
|---|---|
| Union | N/A |
| Chicago | $55 – $440 |
| Aurora | $42 – $340 |
| Joliet | $40 – $320 |
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 →
Estimated Project Timeline in Union
Here's a typical timeline for a plumbing work 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 Plumbing Work permit fee information. Fees typically vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Plumbing Work 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 Plumbing Work permits in Union is about 2 weeks. More complex projects may take longer if plan review is required.
Learn More About Plumbing Work Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Plumbing Work Guide →