Residential Construction Permits

You must obtain permits from the appropriate County agencies and Towns before beginning construction in Loudoun County. 

Permits are typically required for the following residential projects: 

  • Decks
  • Demolition
  • Finished basements 
  • Garages and sheds 
  • Mobile homes
  • New homes
  • Pools
  • Spas and hot tubs 
  • Renovations Additions 
  • Retaining walls
  • Sunrooms
  • Woodstoves, pellet stoves and fireplaces 

The following permits are required for residential construction:

You may need these additional permits for residential construction:

Plan Review

  • Commercial jobs require plan review. Typically, residential jobs do not require plan review.
  • Submit plans for review along with the application.
  • Electrical, gas, mechanical and plumbing plan review: Submit one set of plans (may need to be stamped and sealed).
  • Fire plan review: Submit one set of stamped and sealed plans, along with calculations and cut sheets.
  • Call us at 703-777-0220 with any questions; plan reviewers are available 8:30 a.m. until 4 p.m., Monday through Friday.


  • Building, electrical, fire suppression, gas, plumbing and mechanical work each requires separate applications and permits.
  • These permits will not be issued from the application and architectural plans submitted for a Building Permit.
  • Contractors must have a valid Virginia State Contractors License and Loudoun County Business License.

Mail Submissions To:

Loudoun County
Department of Building and Development
P.O. Box 7000
Leesburg, VA 20177-7000