3 Car Garage Dimensions: Essential Information for Your Garage Planning

This article will provide clear width, length, and height dimensions necessary to accommodate a three-car garage.

Key takeaways:

  • 3 car garage dimensions: Width: 32 feet, Depth: 20-24 feet.
  • Width per vehicle: 10-12 feet for side-by-side parking.
  • Consider vehicle types and their unique size requirements.
  • Check local building codes and restrictions before planning.
  • Consider attached vs. detached garages and their implications.

Standard Dimensions of a Three-Car Garage

When planning for a three-car garage, a common size to consider is 32 feet in width and 20-24 feet in depth.

This setup accommodates three vehicles comfortably, with space for doors to open and a small buffer between each car.

Width per vehicle typically ranges from 10 to 12 feet, which translates to interior dimensions where cars are parked side by side without turning or angling.

Ceiling height also matters, especially for storage or car lifts.

A standard height is 8 feet, but going up to 9 or 10 feet can maximize utility.

Remember, the size of the garage can affect not just vehicle accommodation but also storage options, workbench areas, and overall functionality.

Variations in Size Based On Vehicle Types

When determining the ideal dimensions for a three-car garage, consider the types of vehicles you intend to store. Here are several points to bear in mind:

  • Compact Cars: Smaller footprints allow for narrower garage bays, potentially reducing the width requirement to as little as 28 feet.
  • Full-Size Cars, SUVs, and Trucks: Larger vehicles necessitate wider bays for comfortable access and maneuverability, suggesting a minimum width of 32 feet.
  • Specialty Vehicles: Owning boats, RVs, or vehicles with unusual dimensions may require custom garage specifications to accommodate their unique needs.
  • Mixed Usage: If your fleet includes a combination of vehicle types, plan for the largest vehicle to ensure adequate space.

It’s also important to consider the opening width of garage doors. Single doors typically range from 8 to 10 feet wide, whereas double doors can span 12 to 18 feet. Choosing the right door size enhances both aesthetic appeal and functional convenience.

Local Building Codes and Restrictions

Before finalizing plans for a three-car garage, it’s essential to review local building codes and restrictions, as these can significantly influence garage dimensions. Zoning laws often dictate the maximum size and placement of structures on a property, particularly in residential areas. Additionally, they may affect the height of the garage or the materials used for construction.

It’s important to secure the necessary permits before construction begins. Failing to comply with local regulations may result in fines or a mandate to alter or demolish the non-compliant structure. By researching the specific requirements of your locality, you can ensure that your garage meets all legal standards and contributes to a smooth building process.

Moreover, homeowners’ association (HOA) covenants should be consulted where applicable. These guidelines may impose additional restrictions on design, color, and other aesthetic considerations that could influence your garage plans.

Considerations for Attached Vs. Detached Garages

When choosing between an attached or a detached three-car garage, several factors come into play:

  • Property Layout: Attached garages require a suitable adjoining wall and easy access to your home. Detached garages offer more flexibility in placement and can be situated to optimize space on your property.
  • Purpose and Use: Detached garages can serve as workshops or hobby spaces without disturbing the household, while attached garages allow for convenient entry to your home, particularly in bad weather.
  • Zoning and Permits: Check local restrictions as they may differ for attached and detached structures. Often, detached garages might face more stringent requirements due to their placement on the property.
  • Cost Implications: Typically, attached garages are less expensive due to shared walls and utilities. Detached garages may require additional construction and utility extension costs.
  • Resale Value: Consider how your choice might affect future resale. Attached garages generally appeal more to families looking for direct home access, while detached garages might attract hobbyists or those seeking additional privacy.

Optimizing Layout for Efficiency and Accessibility

Designing a three-car garage for maximal efficiency involves strategic placement of doors, storage, and workspace. The following points clarify how to enhance the layout:

  • Maneuvering Space: Allow at least 30 inches between cars and walls for convenient opening of doors and movement around the vehicles.
  • Door Placement: Position overhead doors to reduce the risk of dings and to provide ample space for each vehicle to enter and exit. Alternatively, consider a larger, single door for easier access if space allows.
  • Workbench and Storage: Allocate one corner of the garage for a workbench or storage to avoid interference with parking spaces.
  • Lighting and Electrical Access: Install ample lighting and multiple electrical outlets, strategically placed for ease of use while avoiding clutter or hazards.
  • Accessibility: Include at least one access door leading directly outside or into the house for safe pedestrian entry and exit, separate from the vehicle doors.

By focusing on these areas, the garage layout will promote a practical, user-friendly space.


How many cars fit in a 30×30 garage?

A 30×30 garage can comfortably fit two cars side by side with extra space to spare.

What size garage is needed for a full size truck?

For a full-size pickup truck or SUV, a 12' x 32' garage is typically required.

How big is a 4 car garage?

A 4 car garage typically measures at least 40 feet wide and 20 feet deep, though a more spacious layout could be 24 feet wide and 45 feet deep to comfortably park four vehicles.

What size is a 3 car carport?

A standard three-car carport is typically 36 feet wide and 20 feet deep.

What are the standard dimensions of a 2 car garage?

The standard dimensions of a 2 car garage are typically 24×24 feet.

How much square footage is needed for efficient storage in a 3 car garage?

A 3 car garage requires at least 600-700 square feet for efficient storage.

What are the key elements to consider when designing a garage to fit an SUV?

The key elements to consider when designing a garage to fit an SUV include ample space for the vehicle, sufficient clearance height, storage solutions, and easy accessibility.