Tired of juggling vehicles, storage, and space in your current garage situation? If you’re considering upgrading to a three-car garage, you’re likely wondering, just how big should a three-car garage be? Whether you are in the market for a three-car garage in any location, planning the right dimensions from the outset is crucial to avoid future regrets about space. Let’s explore the important factors to consider when determining the perfect size for your three-car garage.
Understanding 3 Car Garage Dimensions: An Overview
When planning for a new three-car garage, size is the foundational element. Generally, a three-car garage can range anywhere from 20’x30′ to a spacious 30’x60′.
However, opting for the smallest dimensions might compromise storage and maneuverability. To pinpoint the ideal size for your needs, consider these key aspects:
- Vehicle Sizes: Account for the dimensions of your current vehicles and any potential future vehicle upgrades.
- Available Space: Assess the area on your property where you intend to build the garage.
- Intended Garage Use: Beyond vehicle parking, what other purposes will your garage serve? Storage, workshop, or hobby space?
For a quick reference, here’s a table summarizing typical three-car garage dimensions. Keep reading for a detailed breakdown to help you determine the right size for your specific requirements.
3 Car Garage Size | Width (ft) | Depth (ft) | Square Footage (sq ft) |
---|---|---|---|
Minimum | 30 | 20 | 600 |
Average | 36 | 24 | 864 |
Large | 60 | 30 | 1800 |









*Square footage calculations exclude any attic or additional apartment space.
Minimum 3 Car Garage Size: Balancing Space and Budget
The absolute minimum size for a three-car garage is 20’x30’. This size might be considered if land space is severely restricted or if you primarily park smaller vehicles or equipment like lawnmowers and golf carts. However, for comfortably parking three standard-sized cars, it’s advisable to aim for at least 24’×36’.
While a 20’×30’ garage might technically fit three cars, it will leave very little room for opening doors, maneuvering, or storing anything else. Imagine trying to unload groceries or gear from a family trip in a cramped space – it can quickly become inconvenient. Before settling on the smallest and potentially cheapest option, consider the daily usability and potential frustrations of a tight garage.
Average 3 Car Garage Size: Comfort and Practicality
The average 3 car detached garage size is around 24’×36’. This dimension offers a more comfortable fit for three vehicles, providing a bit more “breathing room” compared to the minimum size.
Many homeowners opt for even larger dimensions to ensure ample space for opening car doors without bumping into walls or other vehicles. Extra space also becomes invaluable for incorporating storage solutions like shelves, workbenches, or simply navigating around the parked cars with ease.
Large 3 Car Garage Dimensions: Maximizing Space and Versatility
For those seeking maximum space and flexibility, large three-car garage sizes can reach 30×60 or even larger. This generous size is ideal if you own larger vehicles like trucks or SUVs, or if you envision using your garage for more than just parking.
A larger garage opens up possibilities for various uses. For families needing extra space, a large garage can double as a recreational area, especially during colder months. Imagine a designated play area for children, a hobby corner, or even a home gym setup, alongside ample space for vehicles and storage. This size ensures you have room for everything from lawn equipment and holiday decorations to tools and recreational gear.
3 Car Garage Square Footage: Considering Vertical Space
The square footage of a three-car garage isn’t limited to the ground floor. If you’re considering adding an attic or even a full apartment above your garage, the overall square footage will significantly increase.
For example, a 20’x40’ three-car garage provides 800 square feet on the ground level. However, adding an attic space can nearly double the usable area. With an attic, the total square footage could reach approximately 1,600 square feet, offering substantial extra space for storage, a home office, or living quarters (after accounting for stairway space).
Determining Your Ideal 3 Car Garage Size: Key Considerations
Choosing the right three-car garage size isn’t just about fitting vehicles; it’s about optimizing functionality for your lifestyle. Before making a decision, carefully consider these factors:
- Number of Cars
- Size of Each Car
- Storage Space Needs
- Garage Door Sizes
- Ceiling Height Requirements
- Local Building Codes
- Future Space Needs
- Budget
Number of Cars: The Core Requirement
Start with the basics: how many vehicles do you intend to park regularly in your three-car garage? While it’s designed for three cars, your needs might be different.
Size of Each Car: Measure for Accuracy
Don’t just estimate; measure the length and width of each vehicle you plan to garage. To ensure comfortable parking, aim for at least two feet of clearance around each vehicle: in front, behind, and between cars, as well as between vehicles and walls.
For comfortable access and door opening, a width of 36 feet is highly recommended. This provides ample space for maneuvering and avoids the risk of door dings. Vehicle lengths vary more significantly than widths, so the depth of your garage will be largely dictated by the length of your longest vehicle.
Storage Needs: Beyond Vehicles
Think beyond just parking. What else needs to be stored in your garage? Consider shelving units, workbenches, seasonal items, tools, and recreational equipment. Be realistic about your storage needs to avoid future clutter and ensure you have enough space to access stored items easily.
Garage Door Sizes: Access and Convenience
Standard single garage doors are typically 9×7 feet. For a three-car garage, you have options: three individual doors (one per bay) or a combination of a larger double door (16-18 feet wide) and a single door. Ensure that the chosen door height accommodates your tallest vehicle, including any roof racks or modifications. Custom door sizes are available if needed.
Ceiling Height: Vertical Potential
Ceiling height is crucial if you plan to maximize vertical space with overhead storage racks or install a car lift. Higher ceilings offer more flexibility for storage and specialized equipment.
Local Building Codes: Regulations and Restrictions
Before finalizing your garage size, always check local building codes and regulations. Jurisdictional rules can dictate maximum garage sizes, setbacks from property lines, and height restrictions. The IRC 2018 generally limits garage size to 1,000 square feet, but local codes may vary. Understanding these restrictions upfront prevents costly revisions later.
Future Needs: Planning Ahead
Consider your long-term plans. Will your vehicle needs change? Do you anticipate needing more storage space in the future? Think about the largest vehicle you might own in the coming years. Garage depth typically ranges from 20-30 feet. Ensure your chosen depth can accommodate potential future vehicle upgrades.
How Deep Should a 3 Car Garage Be? Depth Recommendations
While a depth of 20-30 feet is generally recommended for a 3-car garage, the ideal depth depends on your specific vehicles and intended use. If you regularly park pickup trucks or larger SUVs, consider a minimum depth of 26 feet to provide ample space for parking and walking around the front of the vehicle.
Other 3 Car Garage Size Considerations: Lifestyle and Usage
Beyond vehicle and storage, consider how you truly want to use your garage space. Your lifestyle and hobbies can significantly influence the ideal size.
- Accessibility: Do you need extra space for wheelchair access or mobility devices?
- Storage Layout: Plan the placement of storage shelves and cabinets. Will they impact parking space?
- Appliances: Will you add a freezer, refrigerator, or wine cooler?
- Work Area: Do you desire a workbench for DIY projects or hobbies?
- Fitness: Will you incorporate exercise equipment like a treadmill or weights?
- Recreation: Do you need space for sports equipment, bikes, kayaks, or even a climbing wall?
- Lawn and Garden: Account for lawnmowers, snow blowers, gardening tools, and supplies.
- Pets: If pets use the garage, ensure they have safe and comfortable space to move around.
- Socializing: Do you envision using your garage for gatherings or parties?
Prefab 3 Car Garages: A Quick and Efficient Option
Prefabricated or modular garages offer a streamlined approach to garage construction. These garages are built off-site and then assembled on your property, often significantly reducing construction time. Prefab options are available in various sizes and styles, making it easier to find a three-car garage that meets your dimensional needs and aesthetic preferences.
Final Thoughts on 3 Car Garage Size
When planning your three-car garage, remember the “two-foot rule” – allow at least two feet of clearance around your vehicles. Beyond the minimum, adding extra space for storage and future needs will significantly enhance the functionality and enjoyment of your garage. A well-planned three-car garage provides not just vehicle protection but also valuable space for storage, hobbies, and more, truly adding value to your home.