How much does it cost to build a garage?
How much does it cost to build a garage?
$25,000 – $60,000 average cost (2-car garage)
Average cost to build a garage
The cost to build a garage is $15,000 to $80,000, depending on the size, materials, location, whether it's attached or detached, and whether you choose a prefab garage or custom build. Labor, permits, and site preparation also impact the final price. Building a two-car garage costs $25,000 to $60,000 on average.
| Number of cars | Size (square feet) | Average cost |
|---|---|---|
| 1-car garage | 200 – 384 | $15,000 – $35,000 |
| 2-car garage | 400 – 576 | $25,000 – $60,000 |
| 3-car garage | 700 – 864 | $30,000 – $80,000 |
One-car garage cost
A single-car garage costs $15,000 to $35,000. Single-car garages typically measure 12 to 16 feet wide and 20 to 24 feet deep. This size accommodates one vehicle with some storage space. Consider adding extra depth if you plan to store tools, lawn equipment, or seasonal items. Even a few additional feet can significantly increase functionality.
Two-car garage cost
A 2-car garage costs $25,000 to $60,000. Two-car garages usually measure 20 to 24 feet wide and 20 to 24 feet deep. This is the most popular garage size for homes in the U.S. The space comfortably fits two vehicles with room for storage along the walls.
Three-car garage cost
A 3-car garage costs $30,000 to $80,000. Three-car garages typically measure 30 to 36 feet wide and 20 to 24 feet deep. These larger structures offer multiple configuration options. You can park three cars in a row, arrange them in an L-shape, or dedicate one bay to storage or a workshop.
Garage construction cost factors
Several factors affect how much it costs to build a garage:
Garage size
The garage size has the biggest impact on the cost. Larger garages require more materials, labor, and time to complete. Each additional square foot increases costs for the foundation, framing, roofing, and siding.
Attached vs. detached garage
An attached garage connects directly to your home, sharing at least one wall. This design costs less because it requires fewer exterior walls. It simplifies access to your house and allows you to connect utilities more easily.
A detached garage stands separately from your home. While it costs more due to additional walls and potential trenching for utilities, it offers more design flexibility and keeps noise, fumes, and potential fire hazards away from living spaces.
Prefab vs. custom build
A two-car prefab garage costs $7,200 to $26,000 for the unit only, not including site prep, the foundation, electrical wiring, or installation labor. Some prefab garages come completely pre-assembled, while others require professional assembly after delivery. In comparison, a custom-built garage of the same size costs $25,000 to $60,000 on average.
Site prep & foundation
Proper site preparation ensures your garage has a stable, level base. This phase may involve clearing vegetation, grading the land, and addressing drainage issues. Challenging terrain or poor soil conditions increase preparation costs.
A concrete slab foundation costs $6 to $14 per square foot on average. Concrete slab-on-grade foundations are the most common type used for garages.
Framing
Framing a garage costs $11 to $30 per square foot for standard wood framing, including the roof trusses. If you opt for concrete block walls instead, costs range from $10 to $35 per square foot. These prices are based on the wall square footage rather than the floor square footage.
Siding
New garage siding costs $4 to $15 per square foot on average, depending on the material and quality. Common siding options include vinyl, fiber cement, wood, and brick or stone veneer. Most homeowners choose siding that matches their home's existing siding.
Roofing
A garage roof costs $4 to $16+ per square foot with installation, depending on the material. Asphalt shingles are a popular roofing choice and typically fall within the lower end of this price range, while metal roofing falls at the higher end.
Garage doors & openers
Garage doors cost $700 to $3,500 each with installation, depending on the door width, style, material, and features. Adding a remote garage door opener costs $300 to $900 extra.
Windows & entry doors
Windows brighten your garage and provide ventilation, making the space more comfortable for projects. More windows mean higher costs but improved functionality.
Entry doors provide convenient access without opening the main garage door. A standard entry door is highly recommended for both attached and detached garages. Choose an insulated, weather-sealed door for the best energy efficiency.
Electrical & lighting
Basic electrical service for a garage includes outlets, lighting, and the garage door opener circuit. Most garages need at least one 20-amp circuit for tools and another dedicated circuit for the opener. More complex setups with multiple circuits or 240-volt service for heavy equipment cost more.
If you plan to charge electric vehicles in your garage, discuss your electrical needs with your contractor early. Adding capacity later costs more than installing it during initial construction.
Walls & ceilings
Your total cost will also depend on how you finish the garage's interior walls:
Drywall is the most common choice, offering a finished look and fire resistance between the garage and attached living spaces.
Plywood or oriented strand board (OSB) provides a durable surface for hanging tools and shelving.
PVC paneling resists moisture and cleans easily, making it ideal for garages in humid climates.
Leaving walls unfinished with exposed studs is the most economical option. This approach allows easy access for hanging items but looks less polished.
Insulation
Insulation costs $1.00 to $4.50 per square foot with installation. It makes your garage comfortable year-round, protects stored items from temperature extremes, and reduces noise transmission. It's particularly important for attached garages, where it prevents heat loss from your home.
FAQs about building a garage
How long does it take to build a garage?
Building a garage takes 4 to 12 weeks from start to finish. The timeline depends on the garage size, complexity, weather conditions, and permit processing times. Simple, detached garages may be completed in less than a month.
Prefab garages are often finished within days once the foundation is ready. However, you must account for manufacturing time, which can take several weeks depending on the supplier's backlog.
Does a garage increase a home's value?
Yes, garages typically increase a home's value and appeal to buyers. The return on investment varies by location, but garages generally add more value in areas with harsh weather or limited street parking. In many markets, homes with garages sell faster than those without.
Getting estimates from garage builders
Follow these tips to help you choose the best garage builder near you:
Get quotes from at least three garage builders to compare prices and services.
Read reviews of local builders on HomeGuide and Google.
Browse their portfolios of past projects.
Get a detailed estimate, contract, and warranty in writing before work begins.
Confirm the contractor is licensed and insured.
Never pay in full before the job is done.
Questions to ask garage building contractors
Ask builders these questions to ensure you hire the right pro for the job:
How long have you been building garages?
Do you have any certifications?
Do you recommend a detached or attached garage for my property?
How long will the garage take to build?
Are you licensed and insured?
Do you have a portfolio of other garage projects you've worked on?
Can you provide references from recent clients?
Will you handle the permit applications, or is that my responsibility?
What is included in your estimate, and what costs are additional?
How do you handle unexpected issues or change orders?
Do you subcontract any of the work, and if so, which parts?
What is your payment schedule?
What coverage does your warranty offer?
Using our proprietary cost database, in-depth research, and collaboration with industry experts, we deliver accurate, up-to-date pricing and insights you can trust, every time.