Land Development Services

Fairfax County, Virginia

CONTACT INFORMATION: Monday through Friday, 8 a.m. - 4 p.m. for walk-in customers and virtual support

TTY 711

12055 Government Center Pkwy
Fairfax, VA 22035

Bill Hicks,

Carport Enclosures

Electric Vehicle Charging Stations

This information is the most common for how to obtain the necessary permits for your project and is not representative of all the conditions you may encounter.


You will be required to obtain a residential addition building permit and an electrical permit. If you are installing new heating and cooling equipment, you will be required to obtain a mechanical permit. If you are installing new plumbing fixtures, you will be required to obtain a plumbing permit.


Standard carport enclosure plans are available from Fairfax County that can be used in lieu of a plan submission during permit application, if you agree to construct the carport enclosure in strict conformance to the standard plans.

Using a unique material or product?

You must reference its evaluation report from a nationally recognized listing agency, such as ICC-ES, certifying it meets the requirements of the building code. This is required for products such as pre-made sunrooms, EIFS, adjustable columns and plastic composites.

House Location Plat

Please refer to Submitting House Location Plats for details.


You must notify the county when construction on your project reaches a stage that requires inspection. See the Inspections Timing Checklist below. The county approved site-related plan, building plans and HVAC certification (if applicable) must be available on the jobsite. Any special equipment necessary to perform the inspection, such as ladders, scaffolding or testing equipment, must be on site. For more information on inspection procedures, visit the inspections operational status page. Schedule, cancel or modify an inspection online through FIDO or use the Fairfax County smartphone app available for Android and iOS.

If your new footing or underpinning is constructed in a problem soil, you may need to hire a county-approved licensed professional to perform the foundation inspections. Contact Building Inspections for more information.

Miss Utility

Before you begin excavating for your project, you must first call Miss Utility at 811, TTY 711. Miss Utility is a free service that marks underground utilities.

Inspection Timing Checklist





Residential Addition

  • Footing trench/formwork ready for concrete; bottom of trench on solid soil.

Plumbing groundwork


  • Under-slab sewer and water pipe in place.


Residential Addition

  • Slab area prepared for concrete with gravel, vapor barrier and reinforcing steel in place.

Combined inspection:

  • Building framing
  • Mechanical concealment
  • Plumbing concealment
  • Electrical concealment


  • Vents and gas, sewer and/or water pipe installed and pressure tested.
  • Electrical wiring and boxes installed.
  • Ductwork installed.
  • Sill plates secured to the foundation.
  • Structure weather tight.
  • Wall sheathing installed.
  • Windows and doors installed.


Residential Addition

  • Wall, ceiling and floor insulation in place.

Combined inspection:

  • Building final
  • Mechanical final
  • Plumbing final
  • Electrical final


  • Plumbing fixtures and piping installed.
  • Appliances, fixtures, outlets, panels, switches, etc. installed.
  • HVAC equipment operating properly.
Fairfax Virtual Assistant