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The permit process involves three main steps:

  • application
  • plan review
  • inspection

Building staff will work with you at each stage of the project to ensure successful completion of your project. Please contact the Building Division at 815-356-3605 or to see if your project needs a permit.

The Building Division has guides for several common projects to help with project planning and permit application. Permits are required for the installation or replacement of:

 Building Permits Required (Residential and Commercial)

 Roofing (Residential), Roofing (Commercial) & Siding
 Fences (Residential)
 Pools (above-ground), Pools (in-ground), Pools (storable) & Spas
 Patios & Decks
 HVAC & Air Conditioning
 Water Heaters


Building Permits Not Required for the Repair (Residential and Commercial)
Fence Repair - Repair or Replacement of up to 2 fence panels or 3 support posts
Roof Repair - Repair or Replacement of up to an aggregate total 200 square feet of roofing material
Siding Repair - Repair or Replacement of up to an aggregate total 200 square feet of siding material


The Division makes every attempt to process building permit applications as quickly as possible:

  • Residential permit applications will be processed within 10 working days or less upon receipt of a complete submittal.
  • Commercial and industrial permit reviews are given a time frame of 10-15 days to process the initial review upon receipt of a complete submittal. 


Rolled Plans


Permit Applications
Helpful Project Guides
Tree Removal Permits 
Building Codes

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