Preliminary Plat Packet

This packet provides guidelines for the preliminary design and platting of subdivisions within 1.5 miles of the City of O'Fallon. If rezoning is done through the City, a subdivision must simultaneously proceed through the Planned Use Process. Both must receive approval through City Council.  A link of the Subdivision Development Control Ordinance is available here

• Preliminary Plat Application
• Engineering Site Plan Review Fee Responsibility Form
• Preliminary Plat Check Sheet
• Phase I Drainage Report Check Sheet