Monroe County, Illinois Roofing Permit Regulations and County Ordinances for Unincorporated Areas
Monroe County Building & Safety Jurisdiction
In Monroe County, Illinois, the Zoning Office is the primary department responsible for issuing building permits and enforcing zoning ordinances throughout the unincorporated areas of the county. Residents and contractors can manage the permit process through the county's online portal, Cloudpermit. While general maintenance and cosmetic repairs typically do not require a permit, structural alterations generally do. It is highly recommended to contact the Zoning Office directly to confirm whether a specific roofing project requires a permit before beginning work.
Rules for Properties in Unincorporated Areas
For properties located in unincorporated Monroe County, the following rules and requirements apply regarding building permits and roofing:
- Permit Necessity: A building permit is required for structural alterations. Because roofing work can involve structural changes, you should verify the necessity of a permit with the Zoning Office.
- Contractor Licensing: The state of Illinois requires contractors to hold a valid state license for roofing work.
- Material Restrictions: Monroe County does not allow the use of Oriented Strand Board (OSB) as a roofing material; 1/2-inch plywood or zip board is permitted.
- Application Process: Applications must be submitted online via the Monroe County Cloudpermit portal. The process includes uploading necessary documentation, such as site plans and construction plans, which are then reviewed by the Zoning Administrator.
- Exemptions: While general maintenance and cosmetic repairs are generally exempt from building permits, this exemption does not waive compliance with other zoning and planning requirements.
Resources to Learn More
Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Illinois, including Monroe 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.
Resources to Learn More