Unified Development Ordinance (Zoning)

About the Ordinance

The City of DeKalb Unified Development Ordinance (UDO) was adopted by City Council in January 2007. The purpose of the ordinance is to promote the health, safety and general welfare of the residents of the City of DeKalb through the regulation of zoning, subdivisions, and land use. 

The UDO is a living document that will evolve and grow with the needs and desires of the city and its citizenry in response to changing community goals and objectives, newly emerging development trends and technologies, and changes to state and federal regulations. From time to time, amendments to the UDO are adopted by the City Council.  


The UDO consolidates all regulations that govern development in DeKalb into one user-friendly document. The UDO includes tables, charts and other graphics that make its provisions more accessible.

For More Information

Every effort is made to provide complete and accurate information regarding this ordinance on this website, however, the Planning and Development Division should be contacted regarding specific permit requirements and procedures. Questions should be addressed to Planning and Development Division at 815-748-2060 or by email.


This Internet version of the City of DeKalb’s Unified Development Ordinance (UDO) is made available for public information purposes only. There is no guarantee that this is the most accurate version, and it is not to be used as an official or certified copy of the UDO in any legal proceeding. 

The UDO is amended from time to time, and there is a time lag from when an amendment is effective and when this Internet version is amended. This version of the UDO is current through the amendments adopted March 2015. The official copy of DeKalb’s UDO is available for review at the Planning and Development office.