City Building Permits

Wilmington, ILLINOIS Building Permit Guide

How to apply for a building permit in Wilmington, Illinois. Permit authority, application steps, fees, and inspection requirements.

Illinois Will County Updated March 2026

Permit Authority

Serves the City of Wilmington.

Department: Building Department
Address: 1165 S. Water St., Wilmington, IL 60481
Phone: (779) 801-2136
Email: inspector@wilmington-il.gov
Website: https://www.wilmington-il.gov

Online Permit Portal

Open B&F Construction Code Services (Inspections only)

Platform: B&F Construction Code Services • Account required: No • Submission: Online only

Application Process

Download application from city website.
Submit in person to City Hall.
Include Plat of Survey, contract, and plans.
Third-party review (B&F) takes place.
Notification of approval and fees.
Pay fees and pick up permit.

Typical processing time: Varies; typically 10-15 business days.

Source: Building Department

General Requirements

Decks, pools, fences, structural, roofing, siding.

Required Documents

Plat of Survey
Contract
PDF + Paper plans

Permit validity: 1 year.
Building code: IBC 2021, IRC 2021, IEBC 2021, NEC 2020.
Owner-builder: Allowed for primary residence.
Contractor requirements: Must be registered ($100).

Fees

Minimum permit fee: Varies.
Plan check fee: Charged per B&F rates.
Permit fee formula: Valuation-based.
Trade permit fee: Included in permit fees
Reinspection fee: Varies.
Penalty (no permit): Varies
Payment note: Online payment portal for fees.

Fees change. Verify current amounts at the official fee schedule (effective March 2026).

Work That Does NOT Require a Permit

Interior cosmetics.
Minor repairs.

Important: Exempt from building permit does not mean exempt from zoning and planning requirements. Confirm edge cases with the Building Department before proceeding.

Inspections

How to Schedule

constructioncodes.com (online)
(779) 801-2136 (phone)

Scheduling deadline: 24-hour notice.
Inspection hours: Monday - Friday
Time windows: Standard business hours

Typical inspection sequence: Typical sequence: Roughs, Finals.

Remote video inspections may be used for certain inspection types at the city's discretion.

Additional Resources

Building code: IBC 2021, IRC 2021, IEBC 2021, NEC 2020.
Verify contractor license: Illinois Department of Revenue (Contractor Registration)
Zoning information: View zoning info
Forms
License lookup guide: Illinois Contractor License Requirements
Contract template: Illinois Homeowner-Contractor Agreement
Illinois hub: Illinois Contractor License & Permit Hub

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Building Department before applying.

Need help with your project?

Navigating permits in Wilmington can be complicated.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

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