Budget planning guide
Radon Mitigation cost in Seattle, WA
A transparent starter-scope range for homeowners planning radon mitigation in Seattle, WA. Review the assumptions, then use the project estimator for your own scope.
Starter-scope range
$2,770–$3,910
Planning midpoint: $3,260
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
Radon Fan & Vent Pipe
1 lump sum × $1,105
$1,110
Sub-Slab Suction Points
3 each × $234
$700
Sealing & Testing
1 lump sum × $455
$460
Labor (install & certification)
8 hr × $123.5
$990
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.
Local guides
Compare starter scopes by city
Related project guides