Permit Requirements for Gurnee, Illinois

For Plumbing projects in Gurnee, determining the correct permitting authority depends on whether the project site is located within the incorporated city limits or in an unincorporated area of Lake County.

Authority Having Jurisdiction (AHJ)

Most jurisdictions require permits for Plumbing work to ensure safety and code compliance. The governing body responsible for issuing these permits varies by specific location:

General Plumbing Guidelines

Permits are usually required for new installations, structural modifications, or major repairs. While minor maintenance or cosmetic updates may be exempt, landowners should always verify local codes before work begins.

Because Gurnee is located within Lake County, the following broader county regulations may also apply to your project:

Illinois, Lake County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas

Lake County Building & Safety Divisions and Jurisdiction

In Lake County, Illinois, building permits for unincorporated areas are handled by the Lake County Planning, Building & Development Department. This department is responsible for overseeing construction, renovation, and mechanical work in these areas. For properties within incorporated cities, the respective city's building department manages permit requirements, not the county.

Rules for Properties in Unincorporated Areas

Lake County requires building permits for most construction, renovation, or mechanical work in unincorporated areas. This includes the construction of new structures, additions or alterations to existing ones, and accessory structures like garages, sheds, decks, or fences. Permits are also necessary for any change in a building's use, demolition, or the installation or alteration of equipment regulated by building, electrical, or mechanical codes. Specific repair activities, such as removing or altering structural elements, or adding/altering water supply, sewer, drainage, gas, soil, waste, vent, or similar piping systems, also require a permit.

While a building permit is generally required, certain minor improvements may be eligible for registration instead of a traditional permit process, provided they meet specific standards and restrictions. These can include re-roofing, re-siding, fences, sheds, hoop houses, beekeeping, and keeping chickens.

For plumbing work specifically, a permit is required for all work done on a sanitary sewer or water service.

To discuss permit requirements or request early assistance for projects in unincorporated areas of Lake County, you can contact the Planning, Building & Development Department at 847-377-2600.

Resources to Learn More

The following statewide building codes and regulations apply universally to all jurisdictions within Illinois:

Illinois Plumbing Legislation, Codes, and Guidelines

State Statutes and Plumbing Codes in Illinois

The state of Illinois does not adopt model codes like the International Plumbing Code (IPC) or the Uniform Plumbing Code (UPC) on a statewide basis. Instead, the state utilizes a standalone, state-developed code known as the Illinois Plumbing Code. This code is codified in the Illinois Administrative Code as Title 77, Part 890.

The authority for these regulations is established by the Illinois Plumbing License Law (225 ILCS 320), which mandates the creation of minimum standards for plumbing materials, fixtures, design, and installation methods to protect public health and safety.

Primary State Agency

The Illinois Department of Public Health (IDPH) is the primary state agency responsible for setting and maintaining these standards. The IDPH Plumbing Program oversees the licensing of plumbers and apprentice plumbers, the registration of plumbing contractors, and the enforcement of the Illinois Plumbing Code across the state, except in jurisdictions that may have their own specific building code requirements (such as the City of Chicago, which maintains its own building code).

Resources to Learn More

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