Cost to Shed Building / Installation in Seattle, WA

$1,280–$12,800 in Seattle

28% above the national average · 1.28x cost multiplier

In Seattle, a shed building / installation runs $1,280 to $12,800 on average — about 28% above what homeowners pay nationwide. The West Coast market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.

Cost Breakdown in Seattle

Line Item	Low	Mid	High
Cost per sq ft	$19	$58	$128
Materials	$1,152	$2,816	$8,320
Labor	$0	$1,920	$5,760
Permits	$0	$192	$512
Total	$1,152+28% vs. national avg	$4,928+28% vs. national avg	$15,232+28% vs. national avg

Budget

8x10 prefab metal or resin shed from home improvement store - self-assembly, no professional labor or permit (small size often exempt)

Mid-Range

12x16 wood-framed shed, LP SmartSide or T1-11 siding, shingle roof, double doors, basic shelving - professional assembly on gravel pad

Premium

16x20 custom-built wood shed with 6-foot front porch, windows, insulation, electrical with lighting and outlets, concrete foundation, painted to match house

Material Options

Material prices below are national averages; availability in Seattle may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Metal / Steel Prefab Shed	$300 - $2,000 (kit)	Lowest cost, fire-resistant, pest-resistant, low maintenance	Dents, can rust, gets very hot in summer, limited customization, cheaper models are flimsy	Basic storage in mild climates where appearance is not a priorityLowest cost, fire-resistant, pest-resistant, low maintenance
Resin / Plastic Prefab Shed	$400 - $3,000 (kit)	Rot-proof, rust-proof, low maintenance, won't dent, range of styles available	More expensive than metal, can fade or become brittle in UV exposure, less aesthetically neutral	Homeowners who want low maintenance and do not want to paint or treat the shedRot-proof, rust-proof, low maintenance, won't dent, range of styles available
Wood-Framed Shed with T1-11 or LP SmartSide	$20 - $50 per sq ft installed	Customizable, matches home aesthetics, durable when maintained, good insulation, can be painted	Requires periodic painting or staining, susceptible to rot if not properly maintained	Most homeowners who want a shed that looks like part of the property rather than an afterthoughtCustomizable, matches home aesthetics, durable when maintained, good insulation, can be painted
Cedar or Redwood Siding Shed	$40 - $80 per sq ft installed	Beautiful natural look, naturally rot-resistant, ages gracefully, premium appearance	Most expensive wood option, requires staining to maintain color	Properties where the shed will be visible and aesthetics are a priorityBeautiful natural look, naturally rot-resistant, ages gracefully, premium appearance
Barn-Style or Log Cabin Shed	$50 - $100 per sq ft installed	High aesthetic value, often doubles as a backyard focal point, very durable, adds property appeal	Highest cost, requires experienced builder, may require full permit even at smaller sizes	Homeowners who want the shed to be a backyard feature and potentially add to resale valueHigh aesthetic value, often doubles as a backyard focal point, very durable, adds property appeal

Other Projects in Seattle

Full Kitchen Remodel

Full Bathroom Remodel

Composite Deck Building

Back to national average for Shed Building / Installation

Seattle Estimate

Typical Range

$1,280–$12,800

vs. National Average

28% above national

Cost Multiplier

1.28x

Cost Per sq ft

$19–$128

Estimates apply Seattle's 1.28x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →