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Winnebago County, IL Building Safety: Plumbing Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Code adopted
2014 Illinois State Plumbing Code
Adoption section
Sec. 18-346
Amendments section
Sec. 18-347
Permit fees set by
Sec. 18-3
Max fine per offense
$1,000.00

Summary

Winnebago County adopts the 2014 Illinois State Plumbing Code by reference for all plumbing work, with local amendments and permit fees under the county building code.

City-specific rules exist: Rockford has its own plumbing permits rules that differ from Winnebago County's county-level regulations. If you live in Rockford, check the city-specific page instead.

The 2014 Illinois State Plumbing Code is hereby adopted by reference thereto as though fully set forth in this section and the whole thereof, save and except those portions as are deleted, modified, or amended in section 18-347, three copies of which have been on file in the office of the county clerk for use and examination by the public for at least 30 days prior to the adoption thereof.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 64).

Full Breakdown

All plumbing installation and repair in unincorporated Winnebago County must comply with the 2014 Illinois State Plumbing Code, adopted by reference under Sec. 18-346 and locally amended under Sec. 18-347. Work must be performed by an Illinois-licensed plumber, and permit fees for plumbing work are set under Sec. 18-3 of the county code. The Building Official administers permits, inspections, and enforcement, with a Building/Mechanical Board of Appeals hearing disputes over code interpretation.

Violations & Fines

Violating the adopted plumbing code or working without a required permit is punishable by a fine of up to $1,000.00 per offense, with each day of continued violation treated as a separate offense.

Frequently Asked Questions

What plumbing code applies in unincorporated Winnebago County?
The 2014 Illinois State Plumbing Code, adopted by reference under Sec. 18-346 and amended locally under Sec. 18-347.
Who can perform plumbing work under this code?
Work must be performed by a State of Illinois licensed plumber, per the code's local amendments referencing the Illinois Plumbing License Law.
What happens if I violate the plumbing code?
A fine of up to $1,000.00 per offense, with each day of a continuing violation counted as a separate offense.

Sources & Official References

Other rules in Winnebago County

Animal Ordinances: Dog Leash LawsSome RestrictionsFence Regulations: Height LimitsSome RestrictionsBuilding PermitsSome RestrictionsElectrical PermitsSome RestrictionsCarbon Monoxide DetectorsSome RestrictionsNoise Ordinances: Decibel LimitsLight RestrictionsFence Regulations: Fence Permit RequirementsSome RestrictionsFire Regulations: Smoke DetectorsSome RestrictionsLandscaping Rules: Tree Removal & Heritage TreesSome Restrictions

All Winnebago County rules

Compare Winnebago County to another location·View the Illinois building safety overview

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Plumbing Permits in Cities Across Winnebago County

Rockford, IL