Guide to Adding One-Car and Two-Car Garages in Alexandria, VA

Standard Sizes for One-Car and Two-Car Garages

1. One-Car Garage:

  • Dimensions: A standard one-car garage typically measures approximately 12 feet wide by 20 feet deep.
  • Total Area: This results in a total area of 240 square feet.

2. Two-Car Garage:

  • Dimensions: A standard two-car garage is typically around 20 feet wide by 20 feet deep.
  • Total Area: This results in a total area of 400 square feet.

Considerations for Garage Additions

1. Zoning and Permits:

  • Zoning Laws: Check Alexandria’s zoning laws to ensure compliance with garage size and setbacks from property lines.
  • Permits: Obtain necessary building permits from the City of Alexandria’s Department of Planning and Zoning.

2. Design and Layout:

  • Layout: Plan the layout to include adequate space for vehicle maneuverability and storage needs.
  • Support Structures: Ensure the design includes necessary support columns and beams for structural integrity.

3. Accessibility and Safety:

  • Fire Safety: Install fire-rated doors if required by local regulations. Consider adding fire extinguishers and smoke detectors.
  • Lighting: Ensure adequate lighting inside and outside the garage for safety and convenience.

4. Additional Features:

  • Storage: Plan for storage solutions such as shelving or cabinets.
  • Workspace: Consider including a workbench or utility sink if space allows.

5. Environmental Considerations:

  • Drainage: Ensure proper drainage to prevent water accumulation inside the garage.
  • Insulation and Ventilation: Install insulation and ventilation systems to maintain temperature and air quality.

Steps to Building Your Garage

  1. Planning:
    • Determine the location and size of the garage based on your property layout and needs.
    • Consult with an architect or a design-build firm to create detailed plans.
  2. Permitting:
    • Submit your plans to the City of Alexandria’s Department of Planning and Zoning for review.
    • Obtain all necessary permits before beginning construction.
  3. Construction:
    • Hire a licensed contractor with experience in garage construction.
    • Follow the approved plans and ensure compliance with building codes and regulations.
  4. Inspection and Approval:
    • Schedule inspections at various construction stages as required by local regulations.
    • Obtain final approval upon completion of the project.


By following this guide, you can ensure your one-car or two-car garage addition in Alexandria, VA, meets all standards and provides the functionality and convenience you desire.

Request Free Estimate