Do I need a permit for addition or structural alteration in Bolingbrook?
Yes. In Illinois, addition or structural alteration generally requires a permit, and Bolingbrook is no exception.
Additions and structural alterations require a permit in essentially all Illinois jurisdictions. Illinois has no statewide residential building code for this work, so the permit threshold is set by your municipality or county. The statewide codes that took effect on 1 January 2025 apply to commercial, public and state-funded buildings. Many local codes require zoning review for lot coverage and setbacks, and properties in a mapped flood zone face additional elevation requirements. Bolingbrook requires a permit before any new construction, addition, or alteration to a home, and the permit must be obtained prior to the start of any work. The Village publishes Room Addition Permit Tips and enforces the 2018 International Residential Code with local amendments and Chapter 10 of the Bolingbrook Municipal Code. The area of all structures on the lot may not exceed 30 percent of the lot in an R-2 district or 35 percent in R-3, so confirm lot coverage and setbacks with the Planning and Zoning Division before you design an addition.
Documents you may need
- Plat of survey / site plan showing setbacksrequired
- Construction drawings (floor plan, elevations)required
- Structural details or engineered plansLikely required
- Contractor license and insurance informationSometimes required
- Online building permit application (room addition) through the Village's OpenGov permit portalrequired
- Current plat of survey and construction drawings for the addition or alterationrequired
- Current Village of Bolingbrook contractor registration for each trade involvedrequired
Possible inspections
- Footing/foundation inspection
- Framing inspection
- Rough electrical/plumbing/mechanical inspection
- Final inspection
- Footing and foundation inspection by the Bolingbrook Building Division
- Framing and rough trade inspections (electrical, plumbing, mechanical) where applicable
- Final building inspection
Frequently asked questions
- Do I need a permit for addition or structural alteration in Bolingbrook?
- Yes. In Illinois, addition or structural alteration generally requires a permit, and Bolingbrook is no exception. Additions and structural alterations require a permit in essentially all Illinois jurisdictions. Illinois has no statewide residential building code for this work, so the permit threshold is set by your municipality or county. The statewide codes that took effect on 1 January 2025 apply to commercial, public and state-funded buildings. Many local codes require zoning review for lot coverage and setbacks, and properties in a mapped flood zone face additional elevation requirements. Bolingbrook requires a permit before any new construction, addition, or alteration to a home, and the permit must be obtained prior to the start of any work. The Village publishes Room Addition Permit Tips and enforces the 2018 International Residential Code with local amendments and Chapter 10 of the Bolingbrook Municipal Code. The area of all structures on the lot may not exceed 30 percent of the lot in an R-2 district or 35 percent in R-3, so confirm lot coverage and setbacks with the Planning and Zoning Division before you design an addition.
- Who issues the permit in Bolingbrook?
- The local building department for Bolingbrook handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.