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Garage Conversion Cost in Sumner, WA
Detailed pricing guide with local market adjustments and material comparisons
Sumner Average
$12,750–$34,000
Market Tier
Small City
Cost Breakdown
Garage Conversion Cost in Sumner
Small CityLowAverageHigh
$12,750$23,375$34,000
Market Tier
Small City (0.85x)
Small city with below-average costs
Material Cost Comparison
Framing lumber(Budget)
$9,563–$25,500Insulation(Mid-Range)
$12,750–$34,000Drywall(Premium)
$17,850–$47,600Factors that affect your cost
- Garage size
- Scope (room vs full ADU with kitchen/bath)
- Foundation and floor leveling
- Insulation and drywall
- Window and door installation
- HVAC extension
- Electrical and plumbing
- Permit and zoning requirements
- Parking replacement
Get Quotes in Sumner
Sumner Housing Market
Median Home Price
$599,950
Homes for Sale
10
Price per Sq Ft
$395
Local Pros
564
Home Service Professionals Near Sumner
lender 93multimedia_specialist 87Flooring 74Landscapers 65Roofers 64Inspectors 62Painters 60Cleaners 59
Median Household Income
$98,376
Median Home Value
$478,500
Median Rent
$1,886/mo
Homeownership Rate
49.8%
Population
10,674
Median Year Built
1990
Source: U.S. Census Bureau, ACS 2023 5-Year Estimates
Track Your Costs
Renovation
Garage Conversion
Date
April 2026
Cost
$23,375
Vendor
Your local pro
Warranty
5-year material warranty
Sumner average: $12,750–$34,000
Before
Issue documented with photos
After
Repair completed, area sealed
Materials Used
Framing lumberInsulationDrywallFlooring
Warranty Details
5-year material warranty
Auto-Checkup Created
"Conversion Inspection" — every 24 months
Added by youApril 2026
Property Health Score
Good
83
interior category +12 pts(71 → 83)
Documentation19/25
Maintenance20/25
Warranty22/25
Investment21/25
Your health score is calculated based on documentation completeness, maintenance currency, warranty coverage, and investment tracking.
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I found several remodeling contractors in your area. Here are the top results:
SM
Smith & Sons
Connectedremodeling contractor
4.9(47)
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JR
J&R Home Services
remodeling contractor
4.7(23)
From $95/hr
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Title:remodeling
Category:remodeling contractor
Date:2026-04-04
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Cost FAQ
What is the average cost of garage conversion in Sumner?
The average cost of garage conversion in Sumner, WA ranges from $12,750 to $34,000. The final price depends on Garage size, Scope (room vs full ADU with kitchen/bath), Foundation and floor leveling.
What factors affect garage conversion cost?
Key factors include: Garage size, Scope (room vs full ADU with kitchen/bath), Foundation and floor leveling, Insulation and drywall, Window and door installation, HVAC extension, Electrical and plumbing, Permit and zoning requirements, Parking replacement. In Sumner, local labor rates and material availability also influence pricing.
How do I get accurate quotes for garage conversion in Sumner?
Get at least 3 quotes from licensed professionals in Sumner. Use Fizbo SmartSearch to find and compare local remodelings, read reviews, and request estimates — all in one place.