What if I want more Space inside my One-Car Garage?

That is a great question. In the example to the left, you can see a larger vehicle such as a full-sized pickup inside a 25-foot long garage. It is easy to see there is little room left for a workbench and other needs.

If you want extra space besides your space for a v

If you want extra space besides your space for a vehicle then you’ll need to do some extra planning. Make sure you measure your car or truck first, then decide on the best size for your one car garage and the extra space you need. 

The cost of materials

The materials you choose for your garage will have a large impact on the cost of the project. When considering the material costs for your garage, take each of these factors into account:

  • Doors: Garage doors are a specialty item that most contractors will hire subcontractors to take care of, which makes them one of the costlier parts of construction. Garage doors can cost between $500 and $900 before labor costs (estimate six hours for that). Remember that if you’re planning for a two-car garage, you’ll need to double that.
  • Siding: Once your garage is built, it’s time to finish the exterior. You can opt for a variety of materials, including vinyl siding, aluminum siding, cement board and wood. These materials range in cost from $2 per square foot for vinyl to $6 per square foot for cedar siding.
  • Foundation: Your garage’s foundation will depend on the local climate and your home’s setting. If the ground doesn’t freeze where you live, you can likely get by with a poured concrete slab. In climates where the ground does freeze, you’ll also need footers that reach below the frost line. Either way, estimate $2.50 to $4.50 per square foot, allowing for higher costs if excavation is needed.


How Big is an Oversized 2-Car Garage?

The typical largest size for a 2-car garage is 24 x 30, which comes out to 720 square feet. Anything bigger than this will usually eat up valuable land space or square footage that could be added to your house. However, if space and money aren’t a problem, you can make your 2-car garage however large your heart desires. Keep in mind, however, that at a certain point it would be wiser to convert to a 3-car garage, rather than having an oversized 2-car garage.

Garage Door Installation Cost

Garage door installation costs $550 to $1,800, with most homeowners spending between $1,000, depending on the style, size, and quality you choose. Installing a single car garage door could cost as little as $550. This price includes the doors, labor, tracks, and materials.

Garage Doors Prices

Garage Doors Prices

Garage door prices are $400 to $1,200 on average, depending on the size, style, material, design options, and customizations. Aluminum doors are the least expensive, but they are also more likely to exhibit dents and physical damage than the next cheapest option of a steel door. Fiberglass and wood doors generally offer a more diverse range of designs.

Garage Door Prices
Garage Item Average Cost
Steel Doors $258 – $3,170
Wooden Garage Doors $500 – $1,230
Wood Composite Doors $800 – $2,000
Faux Wood $800 – $2,000
Aluminum Doors $510 – $1,400
Fiberglass Doors $870 – $1,500
Vinyl Doors $850 – $2,000

Each material type for your door will also come with energy efficient ratings, making some more suitable for your area. The more secure you want the door to be to protect the contents of your garage, and the more insulated you want it to be, the closer you will get to the upper end of the price range.

Garage Door Opener Installation Cost

The average cost to install a garage door opener ranges from $127 to $199, while the garage door opener itself costs around $120 to $288. This brings us to a total cost of between $247 and $487 to install your garage door opener. Prices vary depending on the brand, model, power, and type of garage door you have.

Garage Entry Doors

Doors can also be a design and safety feature for your garage. They’ll cost around $100 each or up to $2,500 for high-end security options. In a home where the garage is attached, the door between the garage and the house can be quite plain; but with a detached garage, depending on the budget and your priorities, it will generally be a door with a bit more flair to it.      

Garage Lighting and Electrical Work

Electrical and lighting work can add about $1,000 to $2,500 to your garage build. You’ll need electrical outlets if you plan on using power tools in the garage space—a 100-amp subpanel and between 10–12 outlets in the garage. Along with this, either adding traditional bulb fixtures or ceiling–mounted, cost-effective LED workshop lights (at around $80 each) will be enough for the most demanding garage requirements. Four to 6 sockets with a 60-amp subpanel may work if you are just going to park your car and not work in there. If you are planning on having your clothes dryer or some other appliance that needs a 240v outlet, you can expect to pay an additional $220 to wire for that.

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Are Garages Worth it?

This answer is going to vary based on who you ask. For many people, a car is the most expensive item they own apart from their home. You want to keep it secure and away from the elements, so a garage is a perfect solution.

As you can tell by now, there are a ton of different uses for a garage. As long as you have the space for a garage, it’s a no-brainer! They are definitely worth the investment since they will keep your car in good shape for longer and give you space to do whatever you want.

Families with two cars might opt for a three-car garage. The extra slot in their garage can be used for any one of the earlier uses.

There’s nothing forcing you to park three cars in a three-car garage!

Alternatively, you can plan to pick up more cars in the future when you build a larger garage. Families with a young child might get a three-car garage with the expectation that their kid will have a car of their own that they need to store one day.

Detached garages have a little more wiggle room for expansion, but you need to be sure of the size when you’re putting together an attached garage.

Do I Need a Permit For a Garage?

Each city or region sets its own rules, but they are pretty straightforward when it comes to building a garage. The garage might need to be constructed from fireproof materials, or the electrics and plumbing might require a permit.

In some areas, it depends on the size of the garage. In some local zoning departments, single-car garages don’t need a permit, but double-garages do.

Your structure needs to be single-story, less than 750 square feet, minus a roof deck, and with beams spanning 14 ft or less to qualify for a subject-to-field-inspection permit.

If the garage meets all these requirements your garage complies with the planning laws.

Final Words on How Large a Single Car Garage Should Be

Look at your needs, a balance that with space you have available for single car garage, look at your budget, then come see us for the solution to your need for a one-car garage.

All our sheds are customizable to your specificati

All our sheds are customizable to your specifications and we will be happy to sit down with you and create the garage that is the right size for your needs!

And before you go too far, don’t miss what our past customers have been saying. Read the prefab garage reviews on our website and give us a call if you have any questions!

Choose your garage

Site Built vs. Prefab Garage Cost

The cheapest and quickest solution to get a protective home for your vehicles is to buy a prefab garage or steel garage kit rather than build a custom garage. A steel garage kit costs $4,000–$6,500 while prefab garages will generally start in the $5,000 price range for a two-car space.

You can custom build a 1-car garage for the same price, but because of the difference in visual appeal and impact on property values, most subdivisions and homeowners’ associations will have clauses in the regulations regarding the addition of a garage to the home that will eliminate the possibility of having a manufactured garage.

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How big is an average one car garage?

For one car garage, the width is around 12 ft and the length (depth) is 20 ft. Therefore, the average square footage for 1 car garage is around 12ft X 20ft = 240 Sq Ft.

Two-Story, One-Car Garage Size

  14 ft wide, 28 ft long, and 18 ft tall  784 sq f

14 ft wide, 28 ft long, and 18 ft tall 784 sq ft  

Two-story garages and garages with lofts are usually detached structures. Typically, these garages are under 20 feet tall due to building height restrictions in most residential areas.

They are slightly wider than one-level garages to balance the increased height of the structure. The average size of a two-story, one-car garage is 14 ft wide, 28 ft long, and 18 ft tall.

Two-story one-car garages take advantage of vertical space to provide more room in a single car garage. They are a clever way to double the storage space in a garage without actually increasing the footprint. 

What Vehicles Fit in a Two-Story, One-Car Garage?

Most vehicles will easily fit in a two-story, one-car garage space. Since they’re slightly wider than other types of single-car garages, they can accommodate additional vehicles like a dually (4 real wheels instead of 2) or cars with wide side mirrors.

A two-story, single-car garage is ideal for these vehicles:

  • Compact and sports cars (5-6′ wide, 14-16′ long)
  • Luxury and large cars (6-7′ wide, 16-18′ long)
  • SUVs, trucks, and vans (6-7′ wide, 16-19′ long)
  • Small boats and trailers (7-8′ wide, 14-20′ long)
  • Quads and ATVs (45-50″ wide, 80-85″ long)

Attached Vs. Detached

Which is better and which is cheaper to build?


Attached garages are less expensive to build because you only have to construct 3 walls instead of 4.  It’s also cheaper to install mains electricity, lighting, and water because the services are already in your home.

They are also more convenient because of their proximity to your house. In bad weather, you can get access with the minimum of fuss. Some even have connecting doors to the main property.

Attached garages increase property values, with most investments seeing 80 percent returns on property values. They are also cheaper to build, costing on average $27,000.

There are some downsides to attached garages. They are a greater fire and security risk. They don’t fit with every plot, restricting what you can build, and they may incur more expensive building permits.


Detached garages are located away from the main home, so if you undertake any noisy work, such as using a compressor, then you are less likely to disturb anyone’s peace.

They also have greater scope to expand because you can locate them anywhere in the yard. This gives you room for more cars.

Like attached garages, detached ones also increase your home’s curb appeal and add to the overall value. Plus, they fit the plot better because you choose where to locate it rather than work within your existing home’s constraints.

There are negatives with detached garages. They are less convenient to get to and use, especially in bad weather. Running amenities like gas, electricity, and water is also more of a challenge.

They take up valuable yard space, which could have better uses. Also, some homeowner associations may not allow it.

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