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County of St. Louis (MO)

Missouri Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2014
Fire Code Version2015 Building Code
SolarAPP+ StatusTargeted
Wet Stamps RequiredDigital Structural
Fire Setback Enforced1

Codes

NEC Code Version
2014
Fire Code Version
2015 Building Code
Code List

2015 INTERNATIONAL RESIDENTIAL CODE (IRC)

2015 INTERNATIONAL BUILDING CODE (IBC)

2014 NATIONAL ELECTRICAL CODE (NEC)

2015 INTERNATIONAL FIRE CODE (IFC)

IEBC Accepted
1
ASCE Code Specification
ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status
Targeted
Any SolarAPP+ Restrictions
1
SolarAPP+ Restrictions
MPU,Derate
Revision Required
1
Rough Inspection
Footing inspection
New Planset Required For Module Swap
0

Stamps

Ee Stamp Required On SLD
No
Wet Stamps Required
Digital Structural
Structural Calculations Required
Yes
Stamp Location On Plans
Unspecified
Date On Stamps
Date Plans are Stamped

Fire setbacks

Fire Setback Enforced
1

Structural & loads

Wind Speed
115
Wind Notes
  • Wind speed is 115mph or 89 with allowable stress design.
Snow Load
20
Reducible Snow Load Allowed
1
Minimum Ground On Roof
#10

Electrical

Electrical Load Calcs Required
Derates
Allowed POI
Meter Adapter,Line Side Taps,PV Breaker,Load Side Taps
Panel Schedule Required
Partial Home Backup
Temperature Rating
90
De Rating Ampacity
0.91
BOS Restrictions

Taps may not be located in the Main Service Panel unless it is approved for the connection of multiple power sources. A Junction Tap Box may be used in lieu of the MSP for housing the taps.

Battery / ESS

Unique Battery Placards Needed
0
Separate ESS Disconnect Required
No
ESS Elevation Detail Required
No

Plan set

Plan Set Requirements
  • Provide specs showing inverts are in accordance with UL 1741
  • Provide specs showing mods and racking are in accordance with UL 1703
  • Provide UL listing if tapping inside panel, if this cannot be provided, tap outside in tap box
Cover Page


Site
  • Note the names of street(s) that adjoin the lot, the lot number, and the subdivision name
Roof Plan
  • Dimension the roof length and width
  • Show the dimensions of the array(s). Add dimensions from edges of array(s) to roof edges and to other arrays
Custom Placards Required
0
Non Standard Revision Requirements
  • For revisions only submit the revised pages with a narrative letter describing the changes page by page.

Ground mount

Ground Mount Fencing Required
No
Ground Mount Notes
  • Note the names of street(s) that adjoin the lot, the lot number, and the subdivision name
  • Label all existing features/structures on the lot including septic and wells.
  • Dimension an area free of brush that extends a minimum of 10ft from each side of the array
  • Show with arrows water run off direction(s) and show and label existing swales. The location (s) of the solar PV array system structure shall not obstruct swales or run-off
  • Show, label, and dimension pier locations and their on center spacing. Show and note pier and pier flare diameters and their required depth below grade
Setback Front Yard
10
Setback Back Yard
5
Setback Side Yard
5
Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the County of St. Louis (MO) building department before you rely on this, and treat it as a research head start, not a ruling. Getting quotes? Run them through the quote checker first.