While theoretically, an 18 ft width could accommodate two cars, you will have very little breathing room left in your garage.
How wide is a two-car garage? A standard two-car garage is usually between 18′ and 24′ feet wide.
Overall, the average two-car garage dimensions are 24×24 feet (576 sq ft) or 24×30 feet (720 sq ft).
To conclude, a 20×20 garage should be big enough for most people. Unless you are trying to store a limousine or a monster truck, you should have more than enough space for 2 cars and your equipment and other possessions.
Common 2 car garage dimensions
The single 16-foot-wide (4.9-meter-wide) garage door is large enough to allow two vehicles to rest comfortably within it. It is also a good idea to have a 3-foot-wide door to the exterior on the side of the garage.
A 20 X 20 garage is the smallest and most affordable option to fit two cars comfortably. With 400 square feet of floor space, you can still fit cars (around 45 square feet) and trucks (around 55 square feet), with plenty of space in between.
Site-Built 24×24 Garage Cost: Around $25,000
However, $25,000 is a good entry point for a custom, site-built garage. It is also important to note that while only a site-built garage can make use of the convenience of a concrete floor, that is not included in the $25,000 average price point.
Before you build a 20×20 garage, make sure it gives you the space you need for all the extra things you'd like to store. Since a 20×20 garage is the minimum sized two car garage we recommend, you might think about going larger or higher so you don't crowd yourself out the first day!
For example, a two-car attached garage will add more value than a single-car garage. If you're deciding whether or not adding a garage is a good investment, first consider what kind of garage project suits the property and buyers' preferences in your real estate market.
Most compact trucks will need a garage of at least 20 feet in length. Make sure that you have enough space in your garage with at least a foot or two of clearance on all sides to ensure that the garage is not too tight. Two-car garage: 18x22 to 22x22.
The standard size for double garage doors is 16 feet wide and 7 to 8 feet high.
A single-car garage is around 18-24 feet deep, eight feet wide, and seven feet high at the opening. For 2-car garage dimensions, you'll be looking at a width of around 16 feet (the other sizes will remain the same).
The recommended ( and most popular) size for a 2 car garage is 24×24.
Double-car garage doors usually measure between 16 and 18 feet wide, offering plenty of room for two vehicles to park side by side. This size is ideal for households with multiple cars and makes moving more oversized items in and out of the garage much more manageable, ensuring convenient access and use of space.
A 20×20 two-car garage is sufficiently large enough to park two vehicles, but you won't have much extra room for storage.
Two-car garages: Garages designed for two cars are the most common garage size and are typically 24 feet by 22 feet. They are ideal for homeowners who have two vehicles or need additional space for storage.
The most expensive part of building a garage is typically the labor and materials. Skilled labor, including tasks such as framing, roofing, and installing electrical systems, can significantly drive up costs.
Pouring a 24×24 concrete slab may cost between $2,304 to $4,608, factoring in material, labor, and a six-inch slab. Keep this range in mind when planning your project.
After building many garages and working in and around them I would recommend and build any 2 car garage minimum 24′x24′ with a standard insulated 16′ overhead garage door with electric opener, or I'd install two insulated 9′ wide overhead doors.
Is a 20x20 garage big enough for 2 cars? Yes, a 20×20 garage is big enough for 2 cars, as long as the walls are 6 inches thick or less, allowing for the necessary space to fit two average size cars.
The average 20×20 garage cost typically ranges from $14,000 to $26,000, depending on materials, roof style, and additional customizations.
Understanding Oversize Garage Dimensions
Oversized garages offer significant utility beyond traditional vehicle storage. Starting at dimensions of around 24×24 feet, they provide flexibility for storage, workshops, and recreational spaces.