Peoria County, Illinois Roofing Permit Regulations and County Ordinances for Unincorporated Areas
Peoria County Building & Safety Division
In Peoria County, the Planning and Zoning Department is responsible for managing building permits and ensuring compliance with adopted construction codes. This department oversees the permitting process for unincorporated areas of the county. Property owners or contractors are required to submit a building permit application along with necessary documentation for review and approval before beginning most construction, alteration, or repair projects.
Permit Requirements for Unincorporated Areas
For properties located in unincorporated Peoria County, a building permit is generally required for alterations, renovations, and repairs to a building or structure. Because permit requirements can be specific to the scope of the work, it is essential to verify whether a roofing project requires a permit by contacting the Planning and Zoning Office directly. You should be prepared to provide details about the project, as some repairs or replacements may necessitate a permit while others might not, depending on whether the work involves structural modifications or other regulated aspects of the building code.
Please note that Peoria County accepts building permit applications both digitally and over the counter. All projects must comply with the applicable state and international building codes adopted by the county. It is also important to ensure that any contractor hired for roofing work holds a valid Illinois roofing license, as required by state law.
Resources to Learn More
Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Illinois, including Peoria County.
Illinois Roofing Legislation, Codes, and Guidelines
State-Level Building Codes and Legislation for Roofing in Illinois
As of January 1, 2025, Illinois has implemented a statewide baseline building code requirement pursuant to Public Act 103-0510, which amended the Capital Development Board Act. This legislation mandates that all municipalities and counties in Illinois must adopt and enforce building codes that meet or exceed the minimum structural requirements of the International Code Council (ICC) standards, specifically the International Building Code (IBC) and the International Residential Code (IRC). Prior to this, Illinois did not have a unified statewide building code, and regulations were determined entirely at the local municipal or county level.
While the state now requires a baseline, local jurisdictions retain the authority to adopt their own specific editions (such as the 2018, 2021, or 2024 editions) and implement local amendments, provided those amendments do not reduce the structural requirements below the state-mandated baseline. Consequently, specific roofing requirements—such as those for ice and water shields, ventilation, and shingle layering—can still vary significantly between different cities, villages, and counties. Property owners and contractors must consult their local Authority Having Jurisdiction (AHJ) to confirm the specific code edition and local amendments applicable to their project.
Primary State Agency
The Illinois Capital Development Board (CDB) is the primary state agency responsible for the administration of the state's building code framework. Under the Capital Development Board Act (20 ILCS 3105), the CDB is tasked with identifying and publishing local building codes and ensuring that municipalities and counties comply with the requirement to report their adopted codes and amendments to the state.
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