Solar Permit in Loudoun County, Virginia

Permit required?

Yes, a permit is required.

When a permit is usually needed

Before installing any residential solar energy system

Permit cost and what affects it

Building permit fee is $230 and electrical permit fee is $70 for rooftop systems; ground-mounted systems also require a zoning permit at $165

Permit costs generally depend on the project valuation, the scope of work, and the inspections required. Ask the office how the fee is calculated for your specific project.

Where to apply

• Official permit page
• Permit portal

Frequently asked questions

Do you need a solar permit in Loudoun County?

A building permit and electrical permit are required for residential rooftop solar PV installations in Loudoun County. Ground-mounted solar systems also require a zoning permit. Applications require construction drawings and specification sheets for all components and are submitted through the LandMARC portal. Inspections are conducted Monday through Friday. Always confirm with the Loudoun County Department of Building and Development before starting.

How much does a solar permit cost in Loudoun County?

Building permit fee is $230 and electrical permit fee is $70 for rooftop systems; ground-mounted systems also require a zoning permit at $165 Contact the office for current amounts.

How long does a solar permit take in Loudoun County?

Processing time for a solar permit in Loudoun County varies by workload and project scope. Contact the Loudoun County Department of Building and Development for a current estimate.

Where do you apply for a solar permit in Loudoun County?

You can apply through the Loudoun County permit portal or contact the Loudoun County Department of Building and Development directly. The links are listed on this page.

Official sources

• https://www.loudoun.gov/solarpermits
• https://www.loudoun.gov/building-permits