HVAC Permit in Loudoun County, Virginia

Permit required?

Yes, a permit is required.

When a permit is usually needed

For all HVAC work including equipment replacement

Permit cost and what affects it

Fees are set by the locality and are not published here. See the official fee schedule or contact the office for current amounts.

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 hvac permit in Loudoun County?

A mechanical permit is required in Loudoun County for HVAC work, including equipment replacement and duct modifications. Contractors must hold a master HVAC license and a valid Loudoun County business license to pull permits. Submit applications through the LandMARC online portal or in person at the Government Center. Always confirm with the Loudoun County Department of Building and Development before starting.

How much does a hvac permit cost in Loudoun County?

Fees are set by Loudoun County and are not published here. Contact the office for current amounts.

How long does a hvac permit take in Loudoun County?

Processing time for a hvac 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 hvac 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/96/Building-Development
• https://www.loudoun.gov/4264/Permitting