A two-car garage typically costs between $15,000 and $40,000 to build, depending on what you choose and where you live

The price depends on four main things: the size of the building, the materials you pick, whether you hire a contractor or do some work yourself, and your location. A basic two-car garage with a concrete slab, wood framing, and a straightforward roof costs less than one with finished walls, electrical work, or a second story. Labor makes up roughly half the total cost in most regions, so the same garage can cost significantly more in a city than in a rural area.

Before you get quotes, you need to decide what kind of garage you actually want. Are you building just a place to park two cars, or do you want a workshop, storage space, or a finished interior? Do you need a foundation dug, or can you pour concrete on existing ground? Will you run electricity and water to it? These choices move the price up or down by thousands of dollars.

Key Takeaways

  • A basic two-car garage shell (no interior finishing) runs $15,000 to $25,000 in most parts of the country, but costs vary widely by region and local labor rates.
  • Adding finished walls, insulation, drywall, and flooring can add $5,000 to $15,000 to the total cost.
  • Electrical work, plumbing, and HVAC systems add $2,000 to $8,000 depending on what you install.
  • You will need a building permit from your city or county before construction starts, and the permit cost depends on your local fees and the garage size.
  • Getting three written quotes from licensed contractors in your area is the only way to know what your specific garage will cost.

What a basic two-car garage includes

A basic garage is a straightforward structure: a concrete slab foundation, wood-frame walls, a roof, and a garage door. It has no interior finishing, no electrical outlets, and no climate control. This is the cheapest version and the one most cost estimates start from.

The concrete slab is usually 20 feet wide by 20 feet deep (enough for two cars side by side), poured 4 to 6 inches thick. If the ground slopes or is unstable, the contractor may need to dig deeper or add gravel base, which raises the cost. The walls are typically 2x4 lumber with plywood sheathing and asphalt shingles on the roof. A single garage door opener is included, but not the door itself in some quotes—always ask whether the door is in the price.

At this basic level, you are paying for materials and labor to frame, roof, and weatherproof the structure. No paint, no trim, no finished floor. This is where the $15,000 to $25,000 range sits for most regions.

How location and labor rates change the price

A two-car garage that costs $18,000 in rural Tennessee might cost $28,000 in suburban Boston, and $35,000 in parts of California. The difference is almost entirely labor. Contractors in high-cost-of-living areas charge more per hour, and local building codes sometimes require more expensive materials or methods.

Seasonal timing also matters. Contractors are busier (and charge more) in spring and summer. If you can build in fall or winter, you may find lower bids, though weather delays are more likely. Some contractors offer discounts for off-season work.

The size of your garage also shifts the per-square-foot cost. A 400-square-foot garage (20x20) costs less per square foot than a 300-square-foot one (15x20) because some costs—like the roof and foundation work—don't scale linearly. But a larger garage still costs more in total dollars.

What adds the most cost: finishing and systems

Once you move beyond the basic shell, costs climb quickly. Here is what common additions cost:

Finished interior walls and insulation: Adding drywall, insulation, and paint to the interior walls runs $3,000 to $8,000. If you want the garage heated or cooled, insulation is necessary. Without it, you are just painting plywood.

Flooring: A basic concrete slab is included in the base price. Epoxy coating or polished concrete adds $1,000 to $3,000. Sealed concrete is cheaper—$500 to $1,000.

Electrical work: Running power to the garage, installing outlets, and wiring a garage door opener costs $1,500 to $4,000. If you want 240-volt service for tools or a car charger, add another $1,000 to $2,000.

Heating and cooling: A basic space heater or fan costs $200 to $500. A full HVAC system runs $3,000 to $6,000. Many people skip this and use portable heaters.

Second story or loft: Building up instead of out doubles the framing and roofing work. Expect to add $10,000 to $20,000 for a second story.

What you need before you get a quote

Contractors need specific information to give you an accurate price. Have these details ready when you call:

Exact dimensions: Will it be 20x20, 20x24, or something else? The contractor needs to know the width, depth, and height of the walls.

Foundation type: Do you want a concrete slab, or do you need a stem wall (a concrete wall around the perimeter)? Is the ground level, or does it slope?

Roof style: A straightforward gable roof (peaked) is cheapest. A flat roof or gambrel roof costs more.

What you want inside: Just a place to park, or do you want electrical, insulation, finished walls, or a workbench area?

Local requirements: Call your city or county building department and ask what setback rules explore (how far from the property line the garage must be), whether you need a foundation inspection, and what the permit fee is. This varies by location.

Getting quotes and understanding the numbers

Always get at least three written quotes from licensed contractors. A quote should list materials, labor, the timeline, and what is and is not included. If one quote is much lower than the others, ask why—it may mean the contractor is cutting corners or underestimating the work.

A written quote protects you. It locks in the price (or sets a range if the scope changes), and it gives you something to compare. A verbal estimate is not binding and often leads to surprises when the bill arrives.

Ask each contractor whether the price includes the permit and whether they handle permitting or you do. Some contractors include it; others bill it separately. Also ask about timeline—how long from start to finish, and what delays are likely (weather, inspections, material shortages).

Permits and inspections you will encounter

Your city or county requires a building permit before construction starts. The permit fee depends on your location and the garage size—it might be $200 in a small town or $1,500 in a city. The permit ensures the garage meets local building codes for safety and zoning.

Once construction begins, an inspector will visit to check the foundation, framing, electrical work (if any), and roof before you can close up the walls. Some jurisdictions require multiple inspections. The contractor usually schedules these, but you need to be aware they will happen and may cause short delays.

If you are building in a neighborhood with a homeowners association, you may also need architectural approval before you start. Check your HOA rules early—this can add weeks to the timeline.

Frequently Asked Questions

Can I build a garage myself to save money?

You can do some of the work yourself if you have experience—framing, painting, or finishing the interior. However, foundation work, roofing, and electrical should be done by licensed professionals in most places. Even if you do half the work, you will still need a contractor for the skilled parts, and the savings may be smaller than you expect because you will work slower and may need to redo mistakes.

What is the cheapest garage I can build?

A basic 20x20 unfinished garage shell in a rural area can run as low as $12,000 to $15,000. This is concrete slab, wood frame, roof, and one garage door—nothing else. In urban areas, the same garage costs $20,000 to $25,000 due to higher labor rates.

Do I need a permit for a garage?

Yes, in nearly all places. Building without a permit can result in fines, problems when you sell your home, and issues with your homeowners insurance. The permit fee is usually a small fraction of the total cost and is worth paying.

How long does it take to build a two-car garage?

A basic garage typically takes 4 to 8 weeks from permit approval to completion, depending on weather and the contractor's schedule. If you add finishing work, add 2 to 4 more weeks. Delays from inspections or material shortages can extend this.

Should I add a second story or loft?

A loft or second story adds significant cost ($10,000 to $20,000) but gives you storage or living space. If you only need parking, a basic single-story garage is cheaper and simpler. If you need extra space, a second story may be worth it compared to building a separate storage shed.