Estimating decks and porches in Seattle, WA
Prices for decks and porches in Seattle, WA, how they compare with the national median and what to know when bidding here, for remodeling contractors.
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New deck prices in Seattle
Q4 2026 pricing. Ranges are rounded to the nearest $50, or $100 from $5,000 up.
Pressure treated
$4,900 to $18,400
150 to 500 square feet
National median: $4,150 to $15,600.
Cedar
$6,400 to $24,200
150 to 500 square feet
National median: $5,700 to $21,700.
Redwood
$6,500 to $24,400
150 to 500 square feet
National median: $5,600 to $21,200.
Composite
$10,300 to $37,900
150 to 500 square feet
National median: $9,300 to $34,300.
How Seattle compares
Across the work in the cost data, Seattle prices run 16% above the national median.
More work in Seattle
- Kitchen remodelsCabinets, countertops, appliances and finishes.
- Bathroom remodelsTile, fixtures, vanities and plumbing rough-ins.
- Additions and ADUsBump-outs, second stories and accessory dwelling units.
- GaragesOne and two car garages, framed and sided.
- PaintingInterior and exterior, by surface area and substrate.
- Electrical workService upgrades, rough-ins, fixtures and finish work.
- All of Seattle, WAEvery category, against the national median.
- Decks and porches nationallyNational ranges, cost drivers and the estimate's structure.
Estimate decks and porches with Seattle prices
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