Codes, Ordinances and Procedures

  1. Building and Construction Codes

    St. Charles County is currently using the 2009 International Residential Code, 2009 International Building Code, 2009 International Plumbing Code, 2009 International Mechanical Code, 2009 International Fire Code, and 2008 National Electric Code.

  2. Floodplain Development

    Learn more about the plan for floodplain management in the county.

  3. Miscellaneous Ordinances

    There are additional regulations contained in the Ordinances of St. Charles County (OSCCMo) which the Community Development Department oversees.

  4. One Stop Meetings

    One Stop is an informal meeting where county staff members are available to answer preliminary questions concerning any construction project (staff from private utilities and other governmental agencies can also be scheduled to attend upon request).

  5. Property Maintenance Code

    St. Charles County adopted and currently enforces the 2009 International Property Maintenance Code (IPMC) with amendments.

  6. Unified Development Ordinance

    In 1999, St. Charles County adopted the Unified Development Ordinance (UDO), which developed out of the Land Subdivision regulations that had been in place since 1959.

  7. Stormwater Management & Watercourse Protection