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How Much Does It Cost to Build a Garage? (2026 Guide)

Building an attached 2-car garage costs $20,000–$50,000 in 2026. Detached garages run $15,000–$40,000. Finishing the interior (drywall, heat, electric) adds $10,000–$20,000.

Updated Mar 2026Home & Energy$20K–$50K
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Garage Build Cost Breakdown

TypeSizeCost RangeNotes
Attached 1-car240 sqft$15,000–$30,000Shares wall with home
Attached 2-car400 sqft$20,000–$50,000Most common new build
Detached 1-car240 sqft$12,000–$25,000More flexible placement
Detached 2-car400 sqft$18,000–$40,000Popular for workshops
Garage with apartment600+ sqft$50,000–$120,000ADU above garage
Where Your Money Goes
13%
17%
10%
16%
44%
Attached 1-car 13%
Attached 2-car 17%
Detached 1-car 10%
Detached 2-car 16%
Garage with apartment 44%

Pro Tips for Garage Build

An attached garage adds more value — Attached garages return 60–80% of cost at resale. Detached garages return 50–65%. A finished garage with heat and 240V outlets can return 80%+.
Get a structural engineer review — For attached garages, a structural engineer ($500–$1,500) ensures your foundation and home connection are correct. Required in most jurisdictions.
Insulate the garage door, not just the walls — An insulated garage door ($400–$600 more) keeps an attached garage 10–20°F warmer in winter, protecting pipes and reducing energy bills.
Run 240V while walls are open — If you might ever want an EV charger or welder, run 240V conduit during construction for $200–$400. Adding it later costs $500–$1,500.

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Garage Door Costs

Door TypeCost InstalledLifespanNotes
Single steel (non-insulated)$700–$1,20015–20 yearsBasic, most affordable
Double steel (non-insulated)$900–$1,60015–20 yearsStandard 2-car
Insulated steel (double)$1,200–$2,50020–30 yearsBest for attached garages
Carriage house style$1,500–$4,00020–30 yearsAesthetic upgrade
Custom wood$3,000–$10,00020–30 yearsPremium look

Frequently Asked Questions

How much does a 2-car garage cost to build?▼
A standard attached 2-car garage (400 sqft) costs $20,000–$50,000 unfinished in 2026. Finishing the interior with drywall, insulation, and heat adds $10,000–$20,000. Detached versions run 15–20% less.
Does a garage add value to a home?▼
Yes — an attached garage typically adds 60–80% of its cost in home value. In cold climates and dense suburbs, garages can add $15,000–$30,000+ to resale price. A 2-car garage is a top home feature for buyers.
Do I need a permit to build a garage?▼
Yes in almost all jurisdictions. Permits typically cost $500–$2,000 and require approved drawings. Building without a permit can result in fines and forced demolition. Your contractor should handle permits.
How long does it take to build a garage?▼
A basic shell takes 1–2 weeks to frame and roof. A fully finished garage takes 4–8 weeks including concrete cure time, inspections, and finish work. Factor in 2–4 weeks for permit approval.
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📊 Data Sources & Methodology
Cost data from HomeAdvisor, NAHB, and general contractor surveys. Regional pricing from building permit databases. Updated March 2026. Learn more about our methodology.