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Charleston Oaks Rezoning

Charleston Oaks Rezoning

On January 1, 2023, Charleston Oaks Subdivision was annexed into the City of Ballwin from St. Louis
County, after approval from the St Louis County Boundary Commission in 2022. Annexation is a process
by which a City expands its boundaries to include new areas of land. When this occurs, the City of
Ballwin applies a zoning designation that is comparable to the Designation that was assigned to the land
when it was in Unincorporated St Louis County. This ensures that the land is subject to the City’s zoning
regulations, which guide how land can be used and developed.

The City of Ballwin is now moving forward with the process to apply a City of Ballwin zoning designation
to properties within Charleston Oaks Subdivision.

Here are the steps involved in this process:

The City is submitting a rezoning application for the properties in the newly annexed area. This
application typically includes information about the proposed zoning changes, such as the existing and
proposed zoning designation(s), land use, and any accompanying documentation. A public hearing will
be held at the Planning & Zoning Commission Meeting, whose vote is a recommendation to the Board of
Aldermen. The Board of Aldermen will ultimately have the final vote on the application.
When Charleston Oaks Subdivision was Unincorporated, the zoning designation that St Louis County had
assigned to it was R-3 Residence District. The most appropriate City of Ballwin Zoning Designation is R-3
Single-Family Dwelling District.

While the districts are very similar, any existing structure that does not meet the one of the City’s R-3
zoning requirements would be considered legally non-conforming or “grandfathered”. That means the
structure may continue to exist without any consequence. The property can be sold without issue. Any
new construction would be required to meet the requirements of the City’s R-3 Zoning District.
A public hearing is scheduled to be heard at the Planning & Zoning Commission Meeting on Monday,
December 4 at 7:00 pm at the City of Ballwin Government Center. The Board of Aldermen may vote
on the application at their meeting, which is scheduled for Monday, December 11 at 7:00 pm.


Charleston Oaks Rezoning Comparison Table
St Louis County’s R-3 Zoning DistrictCity of Ballwin’s R-3 Zoning District
Lot size & yard requirements:Lot size & yard requirements:
Minimum lot size: 10,000 square feetMinimum lot size: 10,000 square feet
(20,000 if not connected to public sewer)
Minimum front yard (primary structure): 20 feetMinimum front yard (primary structure): 20 feet
Minimum side yard (primary structure): 8 feetMinimum side yard (primary structure): 8 feet
Minimum rear yard (primary structure): 15 feetMinimum rear yard (primary structure): 15 feet
Height limitations:Height limitations:
No building elevation of any dwelling structure
or building accessory to a dwelling structure
shall exceed three (3) stories or forty-five (45) feet in height, whichever is less.
No building shall exceed 35 feet in height nor
contain more than three stories except as may
be otherwise provided herein.

Additional information can be found using the following links:

St. Louis County R-3 Zoning District
City of Ballwin R-3 Zoning District