Fees, valuation & enforcement
Permit fees are a project input. Enforcement exposure is a project risk. Use the official schedule where available, then confirm valuation, trade permits, plan review, and inspection charges with the Authority Having Jurisdiction.
Official fee pathway
The final charge may depend on declared construction value, occupancy classification, square footage, plan review, state surcharges, trade permits, technology fees, and inspection activity. Do not use a neighboring city’s fee table as a substitute for this jurisdiction.
Fee desk contact
630-553-4141; inspections: KCinspections@KendallCountyIL.gov
Ask the counter to confirm current charges before submitting a project with multiple trades or a change of use.
Financial exposure
Plan for building, mechanical, plumbing, electrical, fire, energy, zoning, septic, right-of-way, or other reviews that the project scope triggers. The lowest initial permit fee is not always the lowest project cost.
Enforcement exposure
When work begins without authorization, the agency may halt the site, require corrective plans, impose additional fees, withhold inspection release, or require concealed work to be exposed for review.
Closeout exposure
A missing final inspection or certificate can complicate occupancy, refinancing, sale, insurance, and utility connection. Preserve the approved plans and signed inspection record through closeout.
Professional field note
Even when a cosmetic or minor project does not require a building permit, zoning, floodplain, shoreline, historic, utility, fire, or right-of-way controls may still apply. Confirm the full jurisdictional picture before work starts.
Source trail
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Kendall County Planning, Building & Zoning Department, Building Division is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 630-553-4141; inspections: KCinspections@KendallCountyIL.gov.
N/A for ordinary building permits; the county publishes a 10-30 day range for administrative zoning variances and typically 10 business days for some residential permit reviews, depending on completeness.
Submit inspection requests by 4:00 PM at least one business day before the requested date to KCinspections@KendallCountyIL.gov. Windows are 7:00-11:00 AM and noon-4:00 PM, with no specific appointment time; inspection requests are not accepted by phone as the normal method.
Effective May 11, 2026: 2024 International Building Code; 2024 International Residential Code including Appendices BA, BB, and BE; 2023 National Electrical Code NFPA 70; Illinois Plumbing Code; 2024 International Mechanical Code; 2024 International Fuel Gas Code; 2024 International Existing Building Code; Illinois Energy Conservation Code; Illinois Accessibility Code; 2018 International Swimming Pool and Spa Code; and 2024 International Property Maintenance Code. The county checklist says no permit is currently required for fences outside the floodplain, shingle replacement without pitch/structural/truss/roofline changes, nonstructural siding, like-for-like windows or doors without changing opening size/framing, and underground sprinkler systems. Agricultural properties use an agriculture-exempt permit process; the exemption does not remove zoning/setback or other required approvals.
Why permit costs vary
Building departments commonly calculate charges from valuation, occupancy, floor area, project type, plan review effort, trade scope, state surcharges, and inspection activity. A remodel that appears small on paper may still trigger structural, energy, fire, or utility review. Ask the permit counter which disciplines apply before you finalize the construction budget.
The same discipline applies to enforcement. Correcting unpermitted work after finishes are installed can require demolition, revised plans, additional inspections, and schedule disruption. Authorization is usually the less expensive project-management decision.