Panel Permits: Fairfax vs Herndon
How do panel permits rules compare between Fairfax, VA and Herndon, VA?
Herndon has fewer restrictions than Fairfax.
Fairfax, VA
Fairfax County
Solar installation permits in the City of Fairfax require application through the Department of Code Administration. Permits include building, electrical, and if applicable mechanical review. Typical processing time is 2 to 4 weeks for residential rooftop systems. Final inspection and Dominion Energy net meter installation are required before activation.
View full Fairfax rules →Herndon, VA
Fairfax County
Herndon permits residential solar panel installation with building and electrical permits. Rooftop solar typically receives expedited review. Virginia Solar Freedom Act §67-701 prevents HOAs from unreasonably restricting solar. Net metering is available through Dominion Energy up to 25 kW residential.
View full Herndon rules →Key Facts Comparison
| Fact | Fairfax | Herndon |
|---|---|---|
| Fact | Permits handled by Department of Code Administration | Building and electrical permits required |
Highlighted rows indicate differences between cities.
Fairfax FAQ
How long does the permit process take?
City permit review is typically 2 to 4 weeks for residential rooftop systems. Including Dominion interconnection, total time from application to activation is usually 2 to 3 months.
Do I need Dominion Energy approval?
Yes. After City inspections pass, Dominion must approve interconnection and install a bi-directional net meter. Systems cannot be energized until Dominion issues permission to operate.
Herndon FAQ
Can my HOA deny rooftop solar?
No, the Virginia Solar Freedom Act §67-701 prevents HOAs from unreasonably restricting solar. They can impose reasonable restrictions on location and appearance.
How long does solar permitting take in Herndon?
Typical residential rooftop solar permits are issued within 5-10 business days. Complete submittals with structural verification speed the process.
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