How big is a one-car garage?
Standard one-car garage size
A standard one-car garage is 12 feet wide by 20 feet deep, providing 240 square feet of total floor space. This is the most common size found in American homes and is generally sufficient to park a single sedan or compact SUV with a small amount of room left over for basic storage.
However, one-car garages can vary significantly depending on the age of the home, local building codes, and the region of the country. Older homes built before the 1960s often have smaller garages, while newer construction tends to offer slightly more generous dimensions to accommodate today's larger vehicles.
| Measurement | Standard size | Range |
|---|---|---|
| Width | 12 feet | 10 – 16 feet |
| Depth | 20 feet | 18 – 24 feet |
| Total square footage | 240 sq ft | 180 – 384 sq ft |
| Ceiling height | 8 feet | 7 – 10 feet |
| Door width | 9 feet | 8 – 10 feet |
| Door height | 7 feet | 7 – 8 feet |
Common one-car garage dimensions
While 12 by 20 feet is the standard, one-car garages come in several common configurations. The right size for your home depends on what you drive, how much storage you need, and whether you plan to use the space for a workshop or hobby area.
| Dimensions (W × D) | Square footage | Best for |
|---|---|---|
| 10 × 18 feet | 180 sq ft | Compact cars, motorcycles, golf carts |
| 12 × 20 feet | 240 sq ft | Standard sedans and small SUVs |
| 12 × 22 feet | 264 sq ft | Mid-size SUVs with minimal storage |
| 14 × 22 feet | 308 sq ft | Full-size trucks and SUVs |
| 14 × 24 feet | 336 sq ft | Large vehicles plus workbench or storage |
| 16 × 24 feet | 384 sq ft | Oversized vehicles, workshop space |
Minimum one-car garage size
The absolute minimum size for a one-car garage is 10 by 18 feet (180 square feet). At this size, you can park a compact car like a Honda Civic or Toyota Corolla, but there will be very little room to open doors comfortably or store anything along the walls.
Most building codes require a minimum interior dimension of 10 feet wide by 20 feet deep for a single-car garage. Check your local municipality's requirements before designing or building, as these codes can differ by jurisdiction.
Ideal one-car garage size
If you have the flexibility to choose, a 14 by 22-foot garage (308 square feet) is the sweet spot for most homeowners. This size gives you ample room to park virtually any passenger vehicle, open doors without hitting the walls, and still have 2 to 3 feet of space along the sides and back for shelving, tools, or a small workbench.
For those who want dedicated workshop space alongside their vehicle, a 16 by 24-foot layout offers the most versatility in a single-car configuration.
Standard garage door dimensions
The garage door is the most important measurement to get right. A standard single-car garage door is 9 feet wide by 7 feet tall. This size accommodates most sedans, SUVs, and light trucks without issue.
| Door type | Width | Height |
|---|---|---|
| Narrow single door | 8 feet | 7 feet |
| Standard single door | 9 feet | 7 feet |
| Wide single door | 10 feet | 7 feet |
| Tall single door | 9 feet | 8 feet |
| Oversized single door | 10 feet | 8 feet |
An 8-foot-wide door is the minimum for comfortable entry and exit. If you drive a larger vehicle like a full-size pickup or SUV, consider a 10-foot-wide door to give yourself extra clearance on each side. Learn more about garage door prices to budget for the right size and style.
If you drive a lifted truck, have a roof rack, or plan to store a kayak on a car-top carrier, opt for an 8-foot-tall door. Standard 7-foot doors may not clear taller vehicles or aftermarket accessories.
Will your vehicle fit in a one-car garage?
Knowing your vehicle's dimensions is critical before committing to a one-car garage size. The general rule of thumb is to allow at least 3 feet of clearance on each side and 3 feet of clearance in front and behind the vehicle for comfortable access and door opening.
| Vehicle type | Average length | Average width | Minimum garage size |
|---|---|---|---|
| Compact car (Honda Civic) | 15 feet | 6 feet | 12 × 20 feet |
| Mid-size sedan (Toyota Camry) | 16 feet | 6.1 feet | 12 × 20 feet |
| Full-size sedan (Chrysler 300) | 16.8 feet | 6.2 feet | 12 × 22 feet |
| Mid-size SUV (Ford Explorer) | 16.7 feet | 6.6 feet | 14 × 22 feet |
| Full-size SUV (Chevy Tahoe) | 17.3 feet | 6.7 feet | 14 × 22 feet |
| Full-size pickup (Ford F-150) | 17.8 feet | 6.7 feet | 14 × 24 feet |
| Heavy-duty pickup (Ram 2500) | 19.5 feet | 6.8 feet | 16 × 24 feet |
Keep in mind that mirrors add width. Most side mirrors extend 8 to 10 inches beyond the vehicle's body on each side. When calculating clearance, add roughly 1.5 feet to your vehicle's listed width to account for mirrors.
Ceiling height considerations
Standard one-car garages have a ceiling height of 8 feet, which is sufficient for most passenger vehicles. The tallest consumer SUVs, such as the Ford Expedition or Chevy Suburban, stand about 6.3 to 6.5 feet tall, leaving plenty of overhead clearance.
| Ceiling height | Works for |
|---|---|
| 7 feet | Low-profile cars, older garages |
| 8 feet | Standard vehicles, most SUVs and trucks |
| 9 feet | Lifted trucks, overhead storage racks |
| 10 feet | Car lifts, RV storage, maximum overhead storage |
If you plan to install overhead storage racks, a ceiling-mounted bike hoist, or a car lift, consider bumping up to a 9- or 10-foot ceiling. Overhead storage racks typically hang 3 to 4 feet below the ceiling, so an 8-foot ceiling leaves only 4 to 5 feet of vertical clearance underneath, which limits what you can park beneath them.
Maximizing storage in a one-car garage
A one-car garage is tight, but smart planning can create a surprising amount of usable storage alongside your vehicle. The key is to think vertically and use wall and ceiling space rather than eating into precious floor area.
| Storage solution | Space gained | Estimated cost |
|---|---|---|
| Wall-mounted shelving | 16 – 32 sq ft of storage | $50 – $200 |
| Pegboard tool organizer | 8 – 16 sq ft of wall storage | $30 – $100 |
| Overhead ceiling rack | 16 – 32 sq ft of storage | $100 – $400 |
| Slatwall system | 24 – 48 sq ft of wall storage | $200 – $600 |
| Freestanding cabinet | 6 – 12 sq ft (uses floor space) | $100 – $500 |
| Ceiling-mounted bike hoist | Saves 6 sq ft of floor space | $20 – $50 |
Layout tips for small garages
- Use the back wall: Install a workbench or shelving along the back wall where the car doesn't reach. Even 3 feet of depth can accommodate a fold-down workbench.
- Go vertical on side walls: Mount shelves, pegboards, and hooks above the hood and trunk line of your vehicle. This dead space is perfect for seasonal items, tools, and sports equipment.
- Install overhead racks: The ceiling area above your car's hood and trunk is wasted space that can hold bins of seasonal decorations, camping gear, or luggage.
- Use narrow shelving: Shelves that are only 12 to 16 inches deep fit along the sides of a garage without preventing you from opening car doors.
- Add a parking guide: A tennis ball hung from the ceiling or a laser parking guide helps you park in the exact same spot every time, so you can plan storage around a predictable footprint.
Cost to build a one-car garage
Building a detached one-car garage costs $10,000 to $40,000 on average, depending on the size, materials, foundation type, and regional labor costs. Attached garages built as part of new construction are generally less expensive because they share a wall and roofline with the home. For a detailed breakdown of all costs involved, see our guide on the cost to build a garage.
| Garage type | Size | Average cost |
|---|---|---|
| Basic detached (12 × 20) | 240 sq ft | $10,000 – $20,000 |
| Standard detached (14 × 22) | 308 sq ft | $15,000 – $27,000 |
| Upgraded detached (14 × 24) | 336 sq ft | $20,000 – $35,000 |
| Premium detached (16 × 24) | 384 sq ft | $25,000 – $40,000 |
| Attached (new construction) | 240 – 336 sq ft | $8,000 – $25,000 |
| Prefab/kit garage | 240 – 308 sq ft | $5,000 – $15,000 |
Factors that affect cost
- Foundation: A concrete slab foundation costs $3 to $7 per square foot. Gravel pads are cheaper but less durable.
- Framing material: Wood framing is traditional, while steel framing offers greater durability at a higher price point.
- Roofing: Matching your garage roof to your home's roof adds to the cost but maintains curb appeal and property value.
- Electrical and lighting: Running electrical service to a garage, adding outlets, and installing overhead lighting costs $1,000 to $3,000 for a basic setup.
- Insulation and finishing: An insulated, drywalled, and painted interior adds $2,000 to $5,000 but makes the space more comfortable and versatile.
- Permits: Building permits for a detached garage typically cost $200 to $1,500, depending on your municipality.
One-car vs. two-car vs. three-car garage
Understanding how a one-car garage compares to larger options helps you decide whether it meets your needs or if upsizing makes more sense for your household.
| Garage type | Standard dimensions | Square footage | Door width |
|---|---|---|---|
| One-car garage | 12 × 20 feet | 240 sq ft | 8 – 10 feet |
| Two-car garage | 20 × 20 feet | 400 sq ft | 16 feet (double) or 2 × 9 feet |
| Three-car garage | 30 × 20 feet | 600 sq ft | 1 double + 1 single or 3 singles |
A two-car garage offers 67% more floor space than a one-car garage, which is significant if you need room for a second vehicle, workshop space, or extensive storage. If your lot and budget allow, the jump from a one-car to a two-car garage is one of the most value-adding upgrades you can make to a home.
Adding a garage or upgrading from a one-car to a two-car garage can increase your home's resale value by 5% to 10%. In many markets, a home without a garage sells for significantly less than comparable homes with one. Learn more about home improvements that add value.
Frequently asked questions
How many square feet is a one-car garage?
A standard one-car garage is 240 square feet (12 × 20 feet). Smaller one-car garages may be as little as 180 square feet (10 × 18 feet), while larger ones can reach 384 square feet (16 × 24 feet).
Can a full-size truck fit in a one-car garage?
Most full-size trucks like the Ford F-150 or Chevy Silverado are about 17 to 18 feet long and 6.5 to 6.8 feet wide. A standard 12 × 20-foot garage is a very tight fit. For a full-size truck, a garage that is at least 14 feet wide and 24 feet deep is recommended.
Is a one-car garage big enough for an SUV?
Compact and mid-size SUVs fit comfortably in a standard 12 × 20-foot garage. Full-size SUVs like the Chevy Tahoe or Ford Expedition will fit, but you may need a deeper garage (22 feet or more) for comfortable clearance behind the vehicle.
Can you convert a one-car garage into living space?
Yes, garage conversions are a popular home improvement project. A 240-square-foot one-car garage provides enough space for a home office, bedroom, or studio apartment. Conversion costs typically run $10,000 to $30,000, including insulation, flooring, electrical, HVAC, and finishing work. Check local zoning laws and building codes before starting.
Is a one-car garage big enough for a workshop?
If you still need to park a car inside, a standard one-car garage offers very limited workshop space. Choosing a larger configuration like 14 × 24 feet gives you roughly 3 to 4 feet of additional width and depth, enough for a workbench and some power tools along the back and side walls. Alternatively, you can use the garage exclusively as a workshop if you do not need vehicle parking.
What are the building code requirements for a one-car garage?
Building codes vary by location, but most jurisdictions require a minimum interior size of 10 × 20 feet for a single-car garage. Common requirements include a concrete slab foundation, fire-rated drywall on walls shared with the home (for attached garages), proper ventilation, and at least one electrical outlet. Always check with your local building department for specific requirements before construction.