Please note that building permits are required for any alteration that changes the original design or floor plan of a structure, including:
Occupancy of commercial buildings and office spaces
Some satellite receiving dishes
Windows and glass doors
Other Permit Requirements
Building permits are also required for adding electrical devices or plumbing fixtures, and replacing furnaces or water heaters. Other projects that require permits include water / sewer connections, signs, and projects that encroach into public right-of-way. Permits are required whether you do the work yourself or hire a contractor.
The list above is not intended to cover all projects requiring a permit. Please Contact the Development Services Department at 630-271-4150 to determine whether or not specific improvements require a building permit.