Detached Garage Cost in Washington
Detached Garage in Washington costs $42–$100 per sq ft in 2026. A typical 576 sq ft project averages $37,440. Washington is in the West region, where labor and materials run on the higher end of national pricing.
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How much does a detached garage cost in Washington? A detached garage in Washington costs $24,192–$57,600 in 2026, with most homeowners paying around $37,440 for a typical 576 sq ft project.
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Pre-set to detached garage in Washington — enter your project size for a localized range.
How big is your Detached Garage?
A 1-car garage is ~240 sq ft. A 2-car garage is ~576 sq ft.
- Per sq ft
- $42–$100
- Typical range
- $24,192–$57,600
- Average
- $37,440
- Labor share
- 55%
Washington Average Cost (2026)
Cost Breakdown
Based on a 576 sq ft project in the West region. Actual costs vary by contractor, site conditions, and material choices.
Detached Garage Cost by Size in Washington
288 sq ft, 576 sq ft, and 1,152 sq ft detached garage cost in Washington — the most common sizes (2026).
| Project size | Low | Mid | High |
|---|---|---|---|
| 288 sq ft | $12,096 | $18,720 | $28,800 |
| 576 sq ft | $24,192 | $37,440 | $57,600 |
| 1,152 sq ft | $48,384 | $74,880 | $115,200 |
Based on $42–$100 per sq ft in the West region. A 1-car garage is ~240 sq ft. A 2-car garage is ~576 sq ft.
Building a Detached Garage in Washington: Local Factors
What makes detached garage projects in Washington different from the national baseline.
Permits & codes
All Washington contractors must be registered with the Department of Labor & Industries (lni.wa.gov) — verify before hiring for a detached garage. Western Washington cities (Seattle, Bellevue, Tacoma) run active permit processes with local building departments; eastern Washington (Spokane, Tri-Cities) is generally faster and less expensive to permit.
Climate & foundations
Western Washington's wet climate (36–60+ inches of annual rain in the Puget Sound area) makes moisture-resistant materials and proper site drainage around the garage foundation important; frost depth is not a major structural driver given the region's mild winters. Eastern Washington sees a more continental climate with real snow load and colder winters that change the design approach.
Market & timing
Seattle-metro garage costs run 15–25% above the national average, driven by high labor rates and L&I compliance costs; eastern Washington runs 15–20% below Seattle pricing. Verify contractor registration at lni.wa.gov before signing any contract.
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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 Washington?
In Washington, a typical 576 sq ft detached garage project costs between $24,192 and $57,600, with a mid-range average of $37,440. Washington is in the West region.
How much is labor for a detached garage in Washington?
Labor accounts for approximately $20,592 of the total cost for a 576 sq ft detached garage project in Washington. The West Coast and Mountain West have some of the highest labor costs in the country, driven by high cost of living and strong contractor demand.
How much does a 2-car garage cost in Washington?
BuildCost's 576 sq ft default size is a 2-car garage — it typically costs $24,192–$57,600 in Washington, averaging $37,440.
Do I need a permit to build a detached garage in Washington?
All Washington contractors must be registered with the Department of Labor & Industries (lni.wa.gov) — verify before hiring for a detached garage. Western Washington cities (Seattle, Bellevue, Tacoma) run active permit processes with local building departments; eastern Washington (Spokane, Tri-Cities) is generally faster and less expensive to permit.
How do I find a contractor for a detached garage in Washington?
Get at least 3 quotes from licensed local contractors, verify their license with Washington's contractor licensing board, and check reviews on Google or the BBB. Use our free estimate tool to understand fair pricing before you negotiate.
Does a detached garage add value to your home in Washington?
On average, a detached garage recoups about 65% of its cost at resale nationwide. For a $37,440 project in Washington, that's approximately $24,336 in added home value. Actual ROI varies by neighborhood and market conditions.
Detached Garage Cost by Washington City
Local pricing, permit notes, and climate factors for major Washington metros.
Detached Garage Calculators
Estimate exact costs and material quantities for your detached garage project.
Other Home Improvement Costs in Washington
Detached Garage Cost in Nearby States
Get Your Estimate
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 contractor quotes
- Ask about permit requirements
- Budget 10–20% contingency
- Check contractor licenses
Detached Garage Cost by State
See the Full Picture
Curious how Washington compares across every project type, not just detached garage?
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