Perry County, Illinois Roofing Permit Regulations and County Ordinances for Unincorporated Areas
Perry County Building and Safety Jurisdiction
In Perry County, Illinois, the administration of building permits is handled through the Office of the Supervisor of Assessments. Before a building permit can be issued, property owners must first obtain a Certificate of Zoning Compliance. The specific zoning administrator depends on the location of the property (e.g., within city limits or in unincorporated areas). For unincorporated areas of Perry County, the Zoning Administrator is the primary point of contact for zoning compliance.
Roofing Permit Requirements for Unincorporated Areas
According to Perry County regulations, a building permit is required when any structure is erected, enlarged, extended, altered, or relocated. While specific "roofing-only" permits are not explicitly detailed as separate from general building permits, any structural alteration or significant improvement to a building typically falls under the requirement to obtain a building permit from the Supervisor of Assessments office. It is important to note that structures less than 100 square feet are generally exempt from the building permit requirement. Property owners should contact the Perry County Supervisor of Assessments or the Zoning Administrator for unincorporated areas to confirm if their specific roofing project requires a permit, as requirements can depend on the scope of the work.
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Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Illinois, including Perry 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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