Budget planning guide

Shed Building cost in Seattle, WA

A transparent starter-scope range for homeowners planning shed building in Seattle, WA. Review the assumptions, then use the project estimator for your own scope.

Starter-scope range

$5,430$7,670

Planning midpoint: $6,390

The planning model applies a higher regional cost factor for this market.

What the model includes

Starter scope and assumptions

Adjust quantities for your project

Shed Materials & Framing

120 sq ft × $23.4

$2,810

Roofing & Siding

140 sq ft × $11.7

$1,640

Foundation / Skid

1 lump sum × $585

$590

Labor (build & deliver)

16 hr × $84.5

$1,350

This is a budgeting example based on a defined starter scope, not a quote or a live survey of local bids. Actual pricing depends on measurements, site conditions, material choices, permits, contractor availability, and the final scope.