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View St. Charles County's adopted International Building Codes with amendments.
Learn more about the plan for floodplain management in the county.
These are additional regulations contained in the Ordinances of St. Charles County (OSCCMo), which the Community Development Department oversees.
St. Charles County adopted and currently enforces the 2009 International Property Maintenance Code (IPMC) with amendments.
In 1999, St. Charles County adopted the Unified Development Ordinance (UDO), which developed from the land subdivision regulations that had been in place since 1959.
Learn more about St. Charles County's processes to handle storm water and keep our waterways safe.