Planning, Building and Zoning Department

The City of Princeton Planning, Building, and Zoning Office administers the building and zoning codes within the city corporate limits.

Building permits for all residential and commercial development projects are issued through this office. 

Permits are required for the following work:

  • New single-family, two-family, multifamily, and non-residential buildings;
  • Building Additions and structural alterations;
  • Accessory buildings including garages, sheds, gazebos, and greenhouses;
  • Porches, decks, and carports
  • Non-residential change in occupancy;
  • Façade changes in B-1 district
  • Driveways
  • Swimming pools (with the exception of temporary inflatable swimming pools)
  • Signs
  • Demolition
  • Street excavation
NOTE: prefabricated metal carports and garages are prohibited


Residential: new construction, additions, and large accessory buildings.
Commercial: new construction, additions, extensive renovations, and large accessory buildings.

Call 815-879-3381 to schedule an inspection.   Please allow at least 48 hrs.  

All construction must comply with the adopted Building Codes and Zoning/Land Development Code. Any variations from the adopted Zoning/Land Development Code will need to be approved by the Princeton Plan Commission and Board of Zoning Appeals before a building permit will be issued.

This office also processes text amendments, special use permits, subdivisions, and planned unit developments.