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County of Loudoun (VA)

Virginia Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2020
Fire Code Version2018 Building Code
Wet Stamps RequiredDigital Structural
Fire Setback Enforced1

Codes

NEC Code Version
2020
Fire Code Version
2018 Building Code
Code List

2021 VIRGINIA UNIFORM STATEWIDE BUILDING CODE

2021 INTERNATIONAL BUILDING CODE

2021 INTERNATIONAL EXISTING BUILDING CODE

2021 INTERNATIONAL PLUMBING CODE

2021 INTERNATIONAL RESIDENTIAL CODE

2021 INTERNATIONAL ENERGY CONSERVATION CODE

2021 INTERNATIONAL SWIMMING POOL AND SPA CODE

2021 INTERNATIONAL MECHANICAL CODE

2021 INTERNATIONAL FUEL GAS CODE

2021 INTERNATIONAL FIRE CODE

2020 NATIONAL ELECTRICAL CODE

ASCE Code Specification
ASCE 7-16

SolarAPP+ & submittal

How Many Plansets Required
Other (See Submission Notes)
Revision Required
0
Rough Inspection
None
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
Top Right
Date On Stamps
Expiration Date

Fire setbacks

Fire Setback Enforced
1
Setback Notes

Standard

Structural & loads

Wind Speed
115
Wind Notes

Exposure Category B

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

Standard

Minimum Ground On Roof
#10

Electrical

AC Disconnect Required
Conditional
AC Disconnect Conditional Criteria

AHJ requires an AC disconnect inside the home and another disconnect outside, when doing a line side tap (LST)

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


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


Custom Placards Required
0

Ground mount

Ground Mount Fencing Required
Mesh/Scrim
Ground Mount Notes


Setback Front Yard
25
Setback Back Yard
25
Setback Side Yard
25
Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the County of Loudoun (VA) 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.