Detached Garage Cost in Portland, OR
Detached Garage in Portland costs $46–$110 per sq ft in 2026. A typical 576 sq ft project averages $41,184. Portland pricing runs roughly 10% above the West regional baseline.
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How much does a detached garage cost in Portland, OR? In Portland, a detached garage costs $26,611–$63,360 in 2026, with most homeowners paying around $41,184 for a typical 576 sq ft project.
- Per sq ft
- $46–$110
- Typical range
- $26,611–$63,360
- Average
- $41,184
- Labor share
- 55%
Portland, OR Average Cost (2026)
What Drives Detached Garage Costs in Portland
Permits & zoning
Portland detached garage permits run through the Bureau of Development Services, with fees scaling to project valuation. Garages built within 3 feet of the house or a shared property line trigger additional fire-rated wall requirements (1/2-inch gypsum board on interior walls). Height is generally capped at the main dwelling's height, and Oregon's statewide CCB contractor license is required — verify at ccb.oregon.gov.
Climate & construction
Portland's 36+ inches of annual rainfall makes moisture management the top construction priority — proper flashing, drainage, and rot-resistant siding matter even more on an unheated garage than on the house itself. Frost depth is mild (18–24 inches), so footings are more about drainage than deep foundations. Moss growth on garage roofing is a persistent maintenance issue under Portland's tree canopy.
Local market
A 20×20 two-car garage is standard on Portland's close-in lots, though tight side yards in SE and NE neighborhoods can make placement difficult without a variance. Costs run near the West regional baseline, about 8–12% above the national average.
Information reflects general guidance for Portland, OR; 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 Portland, OR. Actual costs vary by contractor, site conditions, and material choices.
Detached Garage Cost by Size in Portland
Portland pricing for common detached garage project sizes (2026).
| Project size | Low | Mid | High |
|---|---|---|---|
| 288 sq ft | $13,306 | $20,592 | $31,680 |
| 576 sq ft | $26,611 | $41,184 | $63,360 |
| 1,152 sq ft | $53,222 | $82,368 | $126,720 |
Based on $46–$110 per sq ft in Portland, OR. 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 Portland, OR?
In Portland, OR, a typical 576 sq ft detached garage project costs between $26,611 and $63,360, averaging $41,184. Portland pricing runs roughly 10% above the West regional baseline.
How much does a 2-car garage cost in Portland?
BuildCost's 576 sq ft default size is a 2-car garage — it typically costs $26,611–$63,360 in Portland, OR, averaging $41,184.
Do I need a permit for a detached garage in Portland?
Portland detached garage permits run through the Bureau of Development Services, with fees scaling to project valuation. Garages built within 3 feet of the house or a shared property line trigger additional fire-rated wall requirements (1/2-inch gypsum board on interior walls). Height is generally capped at the main dwelling's height, and Oregon's statewide CCB contractor license is required — verify at ccb.oregon.gov.
What detached garage size is typical in Portland?
A 20×20 two-car garage is standard on Portland's close-in lots, though tight side yards in SE and NE neighborhoods can make placement difficult without a variance. Costs run near the West regional baseline, about 8–12% above the national average.
Does a detached garage add value to homes in Portland?
Nationally, a detached garage recoups about 65% of its cost at resale. For a $41,184 project in Portland, OR, that's approximately $26,770 in added home value. Resale recovery varies by neighborhood and current market conditions.
Detached Garage Calculators
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Other Project Costs in Portland
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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