County Building Permits

Boone County Building Permit Guide (Unincorporated Area)

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

Illinois Updated March 2026

Permit Authority

Serves all unincorporated areas of Boone County, Illinois, including unincorporated portions of all nine townships. Any property within Boone County that is not within the limits of an incorporated municipality (Belvidere, Poplar Grove, Caledonia, Capron, Timberlane, or Candlewick Lake) falls under county jurisdiction.

Department: Building and Zoning Department, Boone County, Illinois
Address: 1212 Logan Avenue, Suite 101, Belvidere, IL 61008
Phone: (815) 544-6176
Email: building@boonecountyil.gov
Website: https://www.boonecountyil.gov/government/departments/building___zoning/index.php

Online Permit Portal

Open Cloudpermit

Platform: Cloudpermit • Account required: Yes • Submission: Online only

Additional resources:

General Cloudpermit Login

Application Process

Confirm that the property is in unincorporated Boone County (not within any incorporated municipality).
Obtain site plan approval from the Boone County Health Department at (815) 544-2951 -- required before a building permit will be released for most structures. If the property is in a subdivision, check with the homeowners association for any additional approvals.
Create an account in Cloudpermit at https://us.cloudpermit.com/gov/map/US-IL56926.
Submit the complete permit application through Cloudpermit, including all required documents.
Department reviews application. Missing information will cause processing delays.
Once review is approved and payment is received, the building permit is released electronically through Cloudpermit.
Post permit on site and proceed with construction.
Schedule inspections through Cloudpermit or by contacting the department at building@boonecountyil.gov or (815) 544-6176. Inspectors access all inspection data in the field through Cloudpermit.
Receive inspection results and final permit closeout electronically.

Typical processing time: Not published; contact the department.

Source: Building and Zoning Department, Boone County, Illinois

General Requirements

All new construction of structures, additions, alterations, and significant repairs require a permit. Specific project type handouts are available for: Decks and Porches, Finished Basements, Swimming Pools and Hot Tubs, and Accessory Structures/Detached Garages at https://www.boonecountyil.gov/government/departments/building___zoning/building_permit_requirements.php

Required Documents

Health Department site plan approval (for most structures; call 815-544-2951)
Construction drawings appropriate to project scope
Site plan showing property lines, existing structures, and proposed work
Contractor information with proof of insurance
Any subdivision/HOA approvals if applicable
Complete online application in Cloudpermit with no missing information

Permit validity: Not published on public website; contact building@boonecountyil.gov or (815) 544-6176.
Building code: 2021 International Building Code (IBC) with local amendments, 2021 International Residential Code (IRC) with local amendments, 2021 International Mechanical Code (IMC) with local amendments, 2021 International Fuel Gas Code (IFGC) with local amendments, 2021 Illinois Energy Conservation Code, 2020 National Electrical Code (NEC) with local amendments, 2014 Illinois Plumbing Code with local amendments, and Boone County Zoning Ordinance (adopted July 9, 2008; amended through 2026)
Owner-builder: Not published; contact the department.
Contractor requirements: No statewide general contractor license in Illinois. Electricians must hold IDFPR license. Plumbers must hold IDFPR license. Specific local contractor registration requirements should be confirmed with the department. Electrical Inspector Larry Rubeck and Plumbing Inspector Greg Hunt (815-218-0610) handle those trade inspections.

Fees

Plan check fee: Not confirmed from public sources; contact the department.
Permit fee formula: The county uses Cloudpermit for permit processing, and fees are likely displayed during the application process. Contact building@boonecountyil.gov or (815) 544-6176 for the current fee schedule.
Payment note: Online payment through Cloudpermit is available. The permit is released once review is approved and payment is received. Zoning application fees (per Ordinance 23-18 O): Zoning verification letter $50.00, Lot of Record letter $75.00.

Work That Does NOT Require a Permit

Contact the Building and Zoning Department, Boone County, Illinois to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

Cloudpermit platform (online)
building@boonecountyil.gov (email)
(815) 544-6176 (phone)

Inspection hours: Department hours: Monday-Friday, 8:00 a.m. to 4:30 p.m.

Typical inspection sequence: Standard IRC/IBC sequence for new residential construction: footing/foundation (after excavation, before pour), rough framing (after structure is framed and rough electrical, plumbing, and mechanical are in place), insulation, final. Specific sequences for other project types (decks, pools, accessory structures) are in the PDF handouts at the building permit requirements page. Inspectors access all inspection data in the field through Cloudpermit (no paper required).

Additional Resources

Building code: 2021 International Building Code (IBC) with local amendments, 2021 International Residential Code (IRC) with local amendments, 2021 International Mechanical Code (IMC) with local amendments, 2021 International Fuel Gas Code (IFGC) with local amendments, 2021 Illinois Energy Conservation Code, 2020 National Electrical Code (NEC) with local amendments, 2014 Illinois Plumbing Code with local amendments, and Boone County Zoning Ordinance (adopted July 9, 2008; amended through 2026)
Verify contractor license: IDFPR License Lookup
Zoning information: View zoning info
Interactive Zoning Map
Full Boone County Code of Ordinances
Chapter 18 Building and Use Regulations
Planning Department
Health Department (site plan approval)
Downloadable forms
Building permit requirements and handouts
Cloudpermit success story
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 and Zoning Department, Boone County, Illinois before applying.

Need help with your project?

Navigating permits in Unincorporated Boone County 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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