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,

New Homes

New Homes

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.

The type of building permits available was updated Nov. 16, 2020. Please review our residential permit type guide and our commercial permit type guide before accessing FIDO, so you know exactly what permit type you are applying for.


You must obtain permits for your new home. Listed below are the types of permits required depending on your project’s site conditions.

  • New single-family dwelling building permit.
  • Mechanical permit.
  • Electrical permit.
  • Plumbing permit (including gas installations).
  • VDOT permit when your property is accessed from a state road.
  • Health permit for properties with wells and/or septic systems.


Fees vary depending on the scope of your project; listed below are the potential fees and deposits.

  • Building, mechanical, electrical and plumbing permit fees for building plan review and building inspections; use the online fee estimator to help determine these costs.
  • Site-related fee for grading plan review and site inspections.
  • Pro-Rata Share Assessment for watershed improvements and maintenance. The cost is based on your project’s impervious area.
  • Conservation Deposit associated with the conservation agreement; learn more.
  • Stormwater fees.
  • VDOT Permit and bond if you have a new entrance to a state-maintained road.
  • Water and sewer tap fees.
  • Health Department fees if your property is or will be served by a septic system or well.

Permit Process

Follow the steps below to obtain the necessary approvals and permits for your project. Vienna and Clifton residents require additional approvals from their respective towns.

  • Step 1) Permit Application

    Permit Application

    Begin your permit application process online using FIDO. Follow the prompts to create your account, apply for your new single-family dwelling building permit and pay the appropriate fees. Once complete,  you will be invited by email to upload your required documents to ProjectDox for submission to the county.

  • Step 2) County Review

    County Review

    County staff from the Permit Application Center, Health Department (if on well or septic), Building Plan Review, Site Review, VDOT (if on a state-maintained road) and Zoning will review your package for completeness and compliance with the building code and county ordinances. You will be notified of any deficiencies. Plan corrections, resubmission fees and additional supporting documents may be required. The status of your submissions are available online for permit application, building plans and grading plan.

    Expedited Building Plan Review Program

    Any building type, size or occupancy is eligible to take advantage of the expedited program. The program provides expedited reviews through the county process provided a pre-review has been conducted by county-approved private peer reviewers that have been hired by the owner.

  • Step 3) Permit Issuance

    Permit Issuance

    Once all county reviews are approved and outstanding fees have been paid, you can access your approved plans in ProjectDox and permit in FIDO. The permit must be printed and posted at the job site, and the approved plans must be printed in full-size and available to the inspector.

  • Step 4) Trade Permits

    Trade Permits

    Mechanical, electrical and plumbing permits can be pulled online only after the building permit has been issued. Input the building permit number issued in Step 3) when prompted for the “associated building permit number” in FIDO. Plans are not required for electrical and plumbing permits. However, the mechanical permit will require you to upload a Residential HVAC Certification during online permit application and obtain county-approval prior to permit issuance.



The Countywide Masterfile Program allows approved plans to be used throughout the county for each model house type. Transferring approved masterfile plans to new lots and subdivisions only requires a review for site-specific conditions. Masterfile plans are valid until the code they were designed under goes out-of-date. See the Masterfile web page for more information.


You are required to obtain building-related inspections from the county for your project. The county must be notified when the stages of construction are reached that require an inspection; see the table below. The rows of the table list the sequence of inspections required for a new home. Approval for an inspection must be obtained prior to proceeding with the next inspection.

Ladders, scaffolds and other equipment necessary to access construction must be provided to the inspector. Schedule, cancel or modify an inspection online or with the Fairfax County smartphone app.






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



  • Piping in place; county inspector must witness the connection to the public sewer.

Combined inspection:

  • Water service
  • Sanitary sewer

(well, septic must be inspected by the Health Department)


  • Sewer lateral installed.
  • Sewer lateral piping flow tested; to be witnessed by county inspector.
  • Water pipe installed.
  • Water pipe pressure tested; to be witnessed by county inspector.

Residential wall (masonry or concrete foundation wall)


  • Forms ready for concrete with reinforcing steel in place.
  • Masonry ready for grout with reinforcing steel in place.

Plumbing groundwork


  • Under-slab sewer and water pipe in place.



  • Parging and waterproofing installed.



  • Slab area prepared for concrete with gravel, vapor barrier and reinforcing steel in place.
  • Drain tile in place, properly sloped and tied to proper outfall.

Temp to Perm


  • House weather-tight.
  • Service accessible.
  • Service entrance cable installed into panel.
  • Service equipment properly grounded.

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.
  • Platform for HVAC equipment installed.
  • Sill plates secured to the foundation.
  • Stairways in place and secured.
  • Sub-flooring installed.
  • House weather-tight.
  • Wall and roof sheathing installed.
  • Windows and doors installed.



  • Wall, ceiling and crawl space insulation in place.

Combined inspection:

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





  • Plumbing fixtures and piping installed.
  • Roughed-in plumbing fixtures permanently capped.
  • Health Department approval obtained for well, septic.
  • Meter set by water authority.
  • Appliances, fixtures, outlets, panels, switches, etc. installed.
  • Panel box index completed.
  • HVAC equipment operating properly.
  • Compliant street address attached to house.
  • Final site grading complete.
  • Attic, basement and/or crawl space insulation in place.
  • House is ready for occupancy and use.


(conducted by site inspectors; see below)

Residential use permit (RUP), Certificate of Occupancy

  • Sodding/seeding, landscaping and screening in place unless winter waiver has been granted.
  • Street, curb/gutter, storm sewers, sidewalks and street signs installed, if applicable.
  • Fire hydrant operational, if applicable.
  • Geotechnical certifications available, if applicable.
  • Applicable proffered conditions satisfied.

Building Plans

Please refer to the Minimum Submissions page to ensure your plans meet building plan submission requirements.

Truss Shop Drawings

Roof or floor truss shop drawings are required to be reviewed by the county and can be submitted after the permit has been issued but before erection. Submit online.



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.

Fairfax Virtual Assistant