Detached Garage Cost in Phoenix, AZ
Detached Garage in Phoenix costs $32–$80 per sq ft in 2026. A typical 576 sq ft project averages $28,800. Phoenix pricing runs in line with the Southwest regional baseline.
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How much does a detached garage cost in Phoenix, AZ? In Phoenix, a detached garage costs $18,432–$46,080 in 2026, with most homeowners paying around $28,800 for a typical 576 sq ft project.
- Per sq ft
- $32–$80
- Typical range
- $18,432–$46,080
- Average
- $28,800
- Labor share
- 46%
Phoenix, AZ Average Cost (2026)
What Drives Detached Garage Costs in Phoenix
Permits & zoning
Phoenix and Maricopa County require a building permit for any detached garage — the 120 sq ft storage-shed exemption doesn't apply once electrical service is added, which nearly all garages have. Detached garages must sit at least 3 feet from side and rear property lines (10 feet if entered from an alley), and accessory structures are capped at 30% of the required yard area.
Climate & construction
No frost depth concern simplifies Phoenix garage foundations, but extreme summer heat (110°F+) makes insulation and ventilation important if the space will be used as a workshop rather than pure storage. Stainless steel and powder-coated aluminum hardware hold up far better than untreated steel against Phoenix's UV and dust exposure.
Local market
A 20×20 two-car garage is the Phoenix standard, often built alongside a carport or RV gate on larger Valley lots. Costs run near the national average, with Scottsdale and Paradise Valley running above the metro baseline for premium finishes.
Information reflects general guidance for Phoenix, AZ; permit fees, code requirements, and zoning rules change — always confirm with the local building department before starting work.
Cost Breakdown
Based on a 576 sq ft project in Phoenix, AZ. Actual costs vary by contractor, site conditions, and material choices.
Detached Garage Cost by Size in Phoenix
Phoenix pricing for common detached garage project sizes (2026).
| Project size | Low | Mid | High |
|---|---|---|---|
| 288 sq ft | $9,216 | $14,400 | $23,040 |
| 576 sq ft | $18,432 | $28,800 | $46,080 |
| 1,152 sq ft | $36,864 | $57,600 | $92,160 |
Based on $32–$80 per sq ft in Phoenix, AZ. A 1-car garage is ~240 sq ft. A 2-car garage is ~576 sq ft.
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Rates shown are approximate averages as of 2025 and will vary based on your credit score, lender, and loan-to-value ratio. Consult a lender for an accurate quote.
Return on Investment
How much value does a detached garage add to your home at resale?
How Detached Garage compares to other projects
ROI figures based on Remodeling Magazine Cost vs. Value Report 2024, national averages. Actual resale value depends on your market, home price tier, and project quality.
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Frequently Asked Questions
How much does a detached garage cost in Phoenix, AZ?
In Phoenix, AZ, a typical 576 sq ft detached garage project costs between $18,432 and $46,080, averaging $28,800. Phoenix pricing runs in line with the Southwest regional baseline.
How much does a 2-car garage cost in Phoenix?
BuildCost's 576 sq ft default size is a 2-car garage — it typically costs $18,432–$46,080 in Phoenix, AZ, averaging $28,800.
Do I need a permit for a detached garage in Phoenix?
Phoenix and Maricopa County require a building permit for any detached garage — the 120 sq ft storage-shed exemption doesn't apply once electrical service is added, which nearly all garages have. Detached garages must sit at least 3 feet from side and rear property lines (10 feet if entered from an alley), and accessory structures are capped at 30% of the required yard area.
What detached garage size is typical in Phoenix?
A 20×20 two-car garage is the Phoenix standard, often built alongside a carport or RV gate on larger Valley lots. Costs run near the national average, with Scottsdale and Paradise Valley running above the metro baseline for premium finishes.
Does a detached garage add value to homes in Phoenix?
Nationally, a detached garage recoups about 65% of its cost at resale. For a $28,800 project in Phoenix, AZ, that's approximately $18,720 in added home value. Resale recovery varies by neighborhood and current market conditions.
Detached Garage Calculators
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How big is your Detached Garage?
A 1-car garage is ~240 sq ft. A 2-car garage is ~576 sq ft.
Pro Tips
- Get at least 3 local contractor quotes
- Confirm permit requirements with the city
- Budget 10–20% contingency
- Check contractor license and insurance