Do I need a permit for addition or structural alteration in Mundelein?
Yes. In Illinois, addition or structural alteration generally requires a permit, and Mundelein 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. Mundelein requires a permit before any addition or structural alteration to a home, and these are reviewed as standard building projects filed through the BS&A Online portal. All contractors other than the property owner must be registered with the Village before a permit is issued, and separate electrical, plumbing, and mechanical work must be done by appropriately licensed contractors. The Village adopts and amends the ICC codes under Title 16 of its Municipal Code. Confirm the current adopted editions and full submittal list with the Building Department at 847-949-3283 before you start.
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
- Building permit application through the Village's BS&A Online portalrequired
- Plat of survey and construction drawings showing the new workrequired
- Plans prepared, signed, and sealed by a licensed design professional for structural or larger projectsLikely required
Possible inspections
- Footing/foundation inspection
- Framing inspection
- Rough electrical/plumbing/mechanical inspection
- Final inspection
- Foundation and framing inspections by the Village Building Department
- Rough electrical, plumbing, and mechanical inspections where those trades are involved
- Final building inspection
Frequently asked questions
- Do I need a permit for addition or structural alteration in Mundelein?
- Yes. In Illinois, addition or structural alteration generally requires a permit, and Mundelein 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. Mundelein requires a permit before any addition or structural alteration to a home, and these are reviewed as standard building projects filed through the BS&A Online portal. All contractors other than the property owner must be registered with the Village before a permit is issued, and separate electrical, plumbing, and mechanical work must be done by appropriately licensed contractors. The Village adopts and amends the ICC codes under Title 16 of its Municipal Code. Confirm the current adopted editions and full submittal list with the Building Department at 847-949-3283 before you start.
- Who issues the permit in Mundelein?
- The local building department for Mundelein 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.