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City of Longmont (CO)

Colorado Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2023
Fire Code Version2018 Building Code
SolarAPP+ StatusTargeted
Wet Stamps RequiredDigital Structural
Fire Setback Enforced1

Codes

NEC Code Version
2023
Fire Code Version
2018 Building Code
Code List

2021 INTERNATIONAL BUILDING CODE

2021 INTERNATIONAL RESIDENTIAL CODE

2021 INTERNATIONAL MECHANICAL CODE

2021 INTERNATIONAL FUEL GAS CODE

2021 INTERNATIONAL PLUMBING CODE

2021 INTERNATIONAL PROPERTY MAINTENANCE CODE

2021 INTERNATIONAL ENERGY CONSERVATION CODE

2021 INTERNATIONAL SWIMMING POOL AND SPA CODE

2021 INTERNATIONAL EXISTING BUILDING CODES CODE

2023 NATIONAL ELECTRIC CODE

ASCE Code Specification
ASCE 7-16

SolarAPP+ & submittal

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

Stamps

Wet Stamps Required
Digital Structural
Structural Calculations Required
Yes
Stamp Location On Plans
Unspecified
Date On Stamps
Expiration Date

Fire setbacks

Fire Setback Enforced
1
Setback Notes

Standard

Structural & loads

Wind Speed
145
Wind Notes

Exposure Category C

Snow Load
30
Reducible Snow Load Allowed
1
Max Attachment Spacing
96
Structural Notes

* Wind criteria shall be 110 MPH Vasd or 139 mph Vult. (conflicting comment - comment below says 142 Vult wind speed - sending Gallegos, Bianca with 139 MPH to confirm)

Minimum Ground On Roof
#6

Electrical

Electrical Load Calcs Required
Derates
Allowed POI
Line Side Taps,PV Breaker,Load Side Taps,Meter Adapter
Panel Schedule Required
Partial Home Backup
Temperature Rating
90
De Rating Ampacity
0.96

Battery / ESS

Unique Battery Placards Needed
0
ESS Notes

Standard

Separate ESS Disconnect Required
ESS Disconnect
ESS Elevation Detail Required
No

Plan set

Plan Set Requirements

Remove the " OR #10 AWG MUST BE IN EMT CONDUIT" text between the modules and the J-Box on all strings

Electrical Diagram

Remove the " OR #10 AWG MUST BE IN EMT CONDUIT" text between the modules and the J-Box on all strings

Ground mount

Ground Mount Fencing Required
No
Ground Mount Notes

Soil Class: Clay

Ground Mount Requires Soil Sample
Soil Study
Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the City of Longmont (CO) 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.