How Much Does It Cost to Build a Garage in 2025? 

If you don’t have a garage and want to add one to your property, it’s important to note that the cost to build a garage varies significantly depending on size, location, the materials you choose to build with, and whether you want a bare-bones structure or a fully finished space.
In this blog post, we’ll cover some of the factors that affect the total cost of building a garage and how much you can expect to pay per square foot for a one-, two-, and three-car garage.

_{*All prices listed in this post are in USD and represent a national average. Actual pricing may vary depending on your region and the materials you choose to build with. Last updated: October 2024.} 

What Pricing Factors Should I Consider When Building a Garage?  

Several factors affect the total cost per square foot to build a garage, including: 

• Size

  The biggest factor affecting the cost of a new garage is size. You can expect to pay significantly more (between $26,250 and $47,250 more, to be precise) for a 24x36 foot three-car garage than you will for a 12x20 single-car garage.

• Foundation

  Most homeowners use concrete slab foundation for their garages. If you opt for the same, you can expect to pay an average of $5.25 to $8.40 per square foot, including labor. Heavy equipment and additional labor may be factored into your total foundation cost if you need significant grading on your property before pouring the foundation.

• Framing

  Wood framing is standard in most residential garages, and framing costs $1.05 to $5.25 per square foot in material (depending on local lumber prices) and an additional $4.20 to $8.40 per square foot in labor.

• Roofing

  The cost of roofing a garage is the same as a standard home. Typically, roofing costs between $9.45 to $11.55 per square foot, with installation included in the total. The price of roofing will vary depending on the size of your garage and the pitch of its roof.

• Electrical

  Running electricity to a garage and adding lighting can cost, on average, between $1,050 and $2,625, with costs increasing with the size of your structure (i.e., electrical costs more for a 24x36 garage than a 12x20 counterpart). Costs can also dramatically increase if you’re building a detached garage further away from the rest of your property.

• Insulation

  If you’re building a wood frame garage, you’ll likely want to insulate it to keep the space warm in the winter — this is especially true if your garage is attached to your home. You can choose between spray foam, batting, and blow-in insulation, and you can expect to pay between $0.53 to $2.10 per square foot for the materials and an extra $1.05 to $1.58 in labor costs.

• Garage Doors

  A single-car garage door costs between $525 and $1,050, while a double garage door usually costs between $1,575 and $3,150, including professional installation. You’ll also have to pay out of pocket for any additional accessories like remote controls or keypads.

• Windows

  A single window unit can cost anywhere from $315 to $1,260 for standard sizes, and the overall cost fluctuates based on window material, glass type, and window style. You’ll likely save on installation, however, as window installation is typically included in your overall framing costs.

• Walls and Ceilings

  Pricing for covering your garage’s interior walls and ceilings will vary depending on if you use plywood, drywall, or PVC-based paneling. For example, if you’re planning to use drywall, you’ll have to budget for sheets of drywall, mud, tape, primer, and paint as well as the cost of a contractor to install it for you. If you plan to cover the walls and ceilings of a 20x20 two-car garage with white Trusscore Wall&CeilingBoard panels, you can expect to pay around $4,300 for the materials, according to our Estimateur de coûts et de matériaux. You can cut down on costs by installing the panels (with ease!) yourself. 

• Storage Capacity

  Adding storage capacity to your garage will also affect the overall cost of your project. MDF pegboard and slatwall can be installed directly to drywall for relatively cheap, cabinets can be placed around the garage (but they’ll take up valuable floor space), or you can integrate Trusscore SlatWall with Trusscore Wall&CeilingBoard for high-strength storage and a seamless finish. In the same 20x20 garage example above, you could cover 25% of your garage walls with white Trusscore SlatWall for approximately $420 or 50% for $840.

Is It More Expensive to Build an Attached or Detached Garage?

As the name suggests, an attached garage is one that is connected to your home. An attached garage usually shares at least one wall with your home and has direct access into the house. A detached garage is a freestanding structure and is separate from your home.

Since building a detached garage requires starting completely from scratch, you can expect to pay about 10% to 15% more than you would for an attached garage. This is especially true if you plan to run electricity and plumbing to your detached garage.