Detached Accessory Structures

You Provide

  • Two complete sets of construction designs.
  • A detached accessory structure over 250 square feet will require:
    • A Detached Accessory Structure Permit.
    • Frost protected footings.
    • They must be within the zoning districts side-yard and rear-yard setbacks.
    • Approval from the Planning & Zoning Commission
  • Site survey.
  • Completed Building Permit Application
  • Mechanical, Electrical, and Plumbing permits must be applied for through St. Louis County's Public Works Department 314.615.7156.

Call for the following inspections:
  • Footing Inspections
  • Foundation Inspections
  • Framing Inspections: after St. Louis County m.e.p. inspectors have approved their rough inspections.
  • Final Inspections: After St. Louis County m.e.p. inspectors have approved their final inspections.
For additional information or further clarification please view our Municipal Code or contact the Public Works Department at 314.835.6130.