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Commission approves 592 sq ft accessory structure at 1627 Dunmorr with stormwater conditions
Summary
The Planning & Zoning Commission approved a 592-square-foot detached accessory structure for an infill home at 1627 Dunmorr Drive, granting the Public Works Director authority to modify the home's stormwater plan after commissioners and a neighbor raised drainage and tree-removal concerns.
The Des Peres Planning & Zoning Commission on June 10 approved a conditional accessory structure permit for a 592-square-foot detached building at 1627 Dunmorr Drive, associated with a yet-to-be-built infill home. The commission granted the City Public Works Director authority to modify the stormwater plan for the primary residence as a condition of the approval.
City Planner Kate Crimmins told the commission that most conditional accessory structure petitions come after a home is completed, but this petition concerns an accessory building tied to an infill home under separate permitting. Architect John Odom, representing petitioner Rex Pearl of Pearl Construction LLC, said preliminary calculations for both structures were nearly complete and that full construction documents would be submitted within a few weeks.
Commissioners and staff focused discussion on stormwater runoff, the removal of mature sweet gum trees on the lot, and potential impacts to adjacent properties and a nearby creek. Possible mitigation measures discussed included raising the home 2–3 feet, installing an underground rock bed and silt fencing, and using construction berming to control runoff. Neighbor Kathy Jacobs of 1609 Dunmorr expressed concern about drainage and construction runoff affecting the creek.
Commissioner Tim Callahan moved to approve the accessory structure permit while giving the Director of Public Works the authority to modify the infill home’s stormwater plan; Commissioner Mary McGrath seconded. The roll call vote was 6 in favor (Ahrens, McGrath, Leinauer, Staley, Callahan, Willbrand) with two abstentions (Mayor Mark Becker and Alderman Patrick Barrett). The motion carried.
Next steps include submission of the full building permit and lot calculations by the builder; the Public Works Director will review and may require modifications to the stormwater plan before the primary home permit is issued.
