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.
The City of Fairfax permit process for residential solar follows USBC requirements. Applications require: site plan showing panel location, structural calculations or affidavit from a licensed engineer or the installer certifying roof load capacity, electrical single-line diagram showing inverter, disconnects, and interconnection point, equipment specifications (UL-listed panels and inverters), and contractor Virginia DPOR license. Most installers handle the permit application on the homeowner's behalf. Fees are typically based on system cost or a flat residential rate. Review is completed by building, electrical, and sometimes mechanical inspectors. After approval and installation, inspections are required: structural and mounting inspection, electrical inspection of the DC and AC wiring, and final inspection verifying all components are installed per approved plans. Once City inspections pass, the installer submits an interconnection application to Dominion Energy, which then schedules installation of a bi-directional net meter. Only after net meter installation and Dominion's permission to operate (PTO) letter can the system be activated. Total timeline including Dominion interconnection is typically 2 to 3 months. Federal Investment Tax Credit (ITC) and Virginia net metering credits apply. The Fairfax Historic Overlay District requires architectural review board approval for visible installations.
Contact your local code enforcement office for specific penalty information.
Fairfax, VA
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Side-by-side rule comparisons with other cities in Fairfax County.
See how other cities in Fairfax County handle panel permits.
See how Fairfax's panel permits rules stack up against other locations.
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