BuildGrade
Detached Garage Cost to Build
A detached garage gives you a standalone structure — more flexibility on placement, design, and use than an attached garage.
Pole Barn
$26,928 – $36,432
Steel Building
$34,272 – $46,368
Stick Built
$58,752 – $79,488
24×24 (576 sq ft), standard finish, average-cost region. Adjust below for your exact specs.
Your Shop Build
Set the size, type, and finish for your shop or outbuilding.
576 sq ft
Insulation, electrical, finished walls — typical functional build.
Typical pricing for most U.S. markets. If unsure, start here.
Remote areas often fall into high-cost due to limited labor and material access.
Site Work & Utilities
Most shops need at least concrete and electrical — toggle what applies.
Estimated Project Cost
$58,752–$79,488
Stick-built shops offer the most flexibility for finished interior spaces, but are typically the highest cost.
Stick Built costs roughly $37,440 more than Pole Barn at this size. Consider whether the added features justify the premium.
Based on typical U.S. construction costs for your selected finish & region.
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How Much Does It Cost to Build a Detached Garage?
A detached garage is a standalone structure built separately from your home. Costs range from roughly $18,000 to $186,000+ depending on size, building type, and finish level. The most common detached garage size is 24×24 (576 sq ft) — a standard 2-car layout. Larger detached garages at 30×30 or 30×40 are popular for homeowners who want workshop space. Use the garage cost per square foot calculator for detailed $/sqft breakdowns.
Detached Garage Cost by Size & Building Type
Standard finish, average-cost region. Costs include structure only — add concrete, electrical, and site prep separately.
| Size | Pole Barn | Steel | Stick Built |
|---|---|---|---|
| 20×20 (400 sqft) | $19k – $25k | $24k – $32k | $41k – $55k |
| 24×24 (576 sqft) | $27k – $36k | $34k – $46k | $59k – $80k |
| 30×30 (900 sqft) | $42k – $57k | $54k – $72k | $92k – $124k |
| 30×40 (1,200 sqft) | $56k – $76k | $71k – $97k | $122k – $166k |
Average-cost region. Actual costs vary by contractor, site conditions, and local labor rates.
Detached vs Attached Garage: Cost Comparison
A detached garageis typically cheaper for the structure itself since it doesn't need to match your home's roofline, siding, or connect to existing HVAC. However, you'll need a separate foundation and may want a covered walkway. Key differences:
- Foundation: detached garages need their own slab or pier foundation ($8/sqft for concrete)
- Utilities: electrical and plumbing must be run separately from the house, adding $1,000–$3,000+
- Design freedom: detached garages can be pole barn or steel — cheaper options usually not available for attached builds
- Property value: a well-built detached garage adds 50–80% of its cost in resale value
- Noise & safety: detached garages keep shop noise, fumes, and fire risk away from living spaces
Best Building Type for a Detached Garage
Stick-builtis the most common choice in suburban neighborhoods — it matches your home's appearance and is easiest to get permitted. Pole barndetached garages are the budget option, ideal for rural properties where HOA rules don't apply. Steel detached garages offer durability and low maintenance at a moderate price. For deeper comparisons, see our pole barn and steel building calculators.
Popular Detached Garage Sizes
- 20×20 (400 sqft) — 1-car detached garage with minimal storage
- 24×24 (576 sqft) — standard 2-car detached garage, the most popular size
- 24×30 (720 sqft) — deep 2-car with room for a workbench and storage
- 30×30 (900 sqft) — roomy 2-car plus workshop or comfortable 3-car layout
- 30×40 (1,200 sqft) — full workshop garage with vehicle storage, popular for hobbyists
Site Work & Add-On Costs for a Detached Garage
Detached garages need their own site work since they're not connected to your home's foundation. For a 24×24 (576 sq ft):
- Concrete slab: ~$4,600 ($8/sq ft)
- Electrical: ~$2,900 ($5/sq ft) — included in standard+ finishes
- Plumbing: ~$2,000 ($3.50/sq ft) — included in premium finish
- Site prep & grading: ~$1,150 ($2/sq ft)
Use the calculator above to toggle add-ons and see how they affect your total estimate.
Frequently Asked Questions
- How much does a detached garage cost to build?
- A detached garage typically costs between $18,000 and $186,000+ depending on size, building type, and finish level. A standard 24×24 stick-built detached garage runs roughly $59,000–$80,000. Pole barn is cheapest; premium stick-built is the most expensive.
- Is a detached garage cheaper than an attached garage?
- The structure itself is often cheaper since it doesn't need to match your home's architecture. However, separate foundation, utility runs, and potentially a breezeway can offset savings. Total cost is usually comparable for the same size.
- Does a detached garage add value to a home?
- Yes — a well-built detached garage typically adds 50–80% of its construction cost to your home's resale value. In areas with limited parking or desirable workshop space, the return can be even higher.
- What is the cheapest detached garage to build?
- A basic pole barn detached garage is the cheapest option, starting around $18,000–$25,000 for a 24×24 structure. Add concrete, electrical, and site prep for a fully functional garage at roughly $27,000–$35,000 total.
- How close can a detached garage be to my house?
- Most building codes require 6–10 feet minimum from your house and 3–5 feet from property lines. Fire separation requirements vary by material and local codes. Always check with your local building department.