Wilmington, IL — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

Building Department

Street address

1165 S. Water St., Wilmington, IL 60481

Phone

(779) 801-2136

inspector@wilmington-il.gov

Coverage

Serves the City of Wilmington.

Online portal

B&F Construction Code Services (Inspections only)

B&F Construction Code Services

Website

Department website

§ 02

When a permit is required

Permit triggers and exempt work for Wilmington

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

Scope of work

Permit?

Interior cosmetics.

Exempt

Minor repairs.

Exempt

Exempt Interior cosmetics.
Exempt Minor repairs.

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

Required documents

Plat of Survey
Contract
PDF + Paper plans

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

Source: Building Department ↗

§ 03

Application process

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

01

Download application from city website.
02

Submit in person to City Hall.
03

Include Plat of Survey, contract, and plans.
04

Third-party review (B&F) takes place.
05

Notification of approval and fees.
06

Pay fees and pick up permit.

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

Source: Building Department ↗

§ 04

Fee schedule

Wilmington building permit fees

Fee type

Amount

Plan check fee

Charged per B&F rates.

Permit fee formula

Valuation-based.

Trade permit fee

Included in permit fees

Online payment portal for fees.

§ 05

Required inspections

Scheduling and sequence

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 sequence: Typical sequence: Roughs, Finals.

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

Source: Building Department ↗

§ 06

Frequently asked

Common questions about Wilmington permits

01 Do I need a building permit in Wilmington, IL? ▸

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

02 How much does a building permit cost in Wilmington, IL? ▸

Building permit fees in Wilmington, IL are set by the local building department and vary by project type and valuation. Fees are calculated as: Valuation-based.. Plan check fee: Charged per B&F rates..

03 How do I apply for a building permit in Wilmington, IL? ▸

To apply for a building permit in Wilmington, IL, follow these steps: 1. Download application from city website. 2. Submit in person to City Hall. 3. Include Plat of Survey, contract, and plans. 4. Third-party review (B&F) takes place. 5. Notification of approval and fees. 6. Pay fees and pick up permit.

04 How long does it take to get a building permit in Wilmington, IL? ▸

Building permit processing times in Wilmington, IL typically run Varies; typically 10-15 business days.. Timelines can vary based on project complexity and current department workload.

05 What work is exempt from building permits in Wilmington, IL? ▸

Not all construction work requires a permit in Wilmington, IL. The following work is generally exempt: Interior cosmetics.; Minor repairs.. Note: Exempt from building permit does not mean exempt from zoning and planning requirements. Confirm edge cases with the Building Department before proceeding. When in doubt, confirm with the local building department before starting work.

06 How do I schedule a building inspection in Wilmington, IL? ▸

Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Wilmington, IL via: constructioncodes.com, (779) 801-2136. 24-hour notice..

last verified April 2026 source Building Department ↗ entry id permits/illinois/will/wilmington

Report a correction

Educational reference. Permit rules and fees change — confirm current requirements directly with Building Department before applying. Jaspector is not legal advice.

City of Wilmington

Other jurisdictions in Will County.