Zoning and Subdivision Information

The Land Planning Section is responsible for Zoning and Subdivision.

The Land Planning Section enforces the County's Zoning Ordinance by processing and analyzing petitions for changes in zoning, special procedures, and variances to the zoning regulations. The Section also researches and proposes ordinance amendments to ensure that the Zoning Ordinance is effective in regulating land use. Additionally, the Section conducts and coordinates plan reviews of commercial, industrial, and residential development in unincorporated St. Louis County by the St. Louis County Planning Commission.  

You can view a flowchart of the Change of Zoning Process here.

For more information on zoning changes, please visit our Citizen's Guide to the Zoning Process web page. For detailed information about applying for a zoning change or special procedure, please view our Guide to the Zoning Application Process brochure.

The applications for zoning changes and special procedures, other forms and checklists are available in .pdf format at the forms page.

The Land Planning Section also oversees the division of land for unincorporated St. Louis County. In addition, the Section is responsible for the calculation, collection, monitoring, and management of escrow accounts for public improvements in subdivisions. For more information on the subdivision process, please view our Guide to the Subdivision Process.

Download Letter of Credit for financial Institutions (Microsoft Word format).

Information on requesting inspections and releases is available here.
(Updated July 2020)

Subdivision Ordinance

This site will allow you to retrieve subdivision ordinance information by section or by title for the unincorporated areas of St. Louis County. Please select one of the group headings to take you to a list of ordinances related to that heading.

Platting Requirements
  • Subdivision Design Standards
  • Improvements
  • Display Boundary Adjustment
  • Fees/Variances
  • Administration
  • Amendments
  • Unit Cost Index

    Subdivision Information Sheets
    Boundary Adjustment
    Condominium Plat
    Display Plat
    Preliminary Plat
    Record Plat  
  • Contact

    Department of Planning
    St. Louis County Government
    41 S. Central Avenue, 5th Floor
    Clayton, Missouri 63105

    Phone   314-615-2520
    Fax 314-615-3729   
    [email protected]

    Zoning Ordinance

    The Zoning Ordinance is available on line in .pdf format at Zoning Ordinance.