Cost to Garbage Disposal Installation in Seattle, WA (2026)
If you’re budgeting a garbage disposal installation in Seattle, most projects run $222-$721, 20% above the $375 national average. What moves that number most is usually one thing: Unit Horsepower and Brand. On its own it can swing the cost by $80 - $500 in materials, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Replace the disposal yourself if you're swapping like-for-like - it's a 1-2 hour DIY project for most homeowners and saves $120-$200 in labor.
$222-$721 in Seattle
20% above the national average · 1.20x cost multiplier
In Seattle, a garbage disposal installation runs $222 to $721 on average - about 20% 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 unit | $102 | $451 | $721 |
| Materials | $114 | $285 | $570 |
| Labor | $160 | $256 | $448 |
| Permits | $0 | $0 | $0 |
| Total | $274+22% vs. national avg | $541+20% vs. national avg | $1,018+20% vs. national avg |
Budget
Basic 1/3-1/2 HP unit (InSinkErator Badger or similar) replacing an existing disposal on an existing circuit. No new wiring needed.
Mid-Range
3/4 HP mid-range unit (InSinkErator Evolution or Moen) with quiet operation, replacing existing disposal or doing first-time install with existing outlet nearby.
Premium
1 HP or higher premium unit with multi-stage grinding, quiet motor, and auto-reverse. First-time install requiring a new dedicated circuit from panel.
Material Options
Material prices below are national averages; availability in Seattle may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| 1/3 HP Basic Disposal | $70-$110 unit only | Rentals, light use, budget installsLowest cost, handles soft food waste |
| 1/2 HP Standard Disposal | $100-$180 unit only | Most average householdsGood for most households, reliable |
| 3/4 HP Mid-Range Disposal | $150-$280 unit only | Families with regular kitchen useQuieter, handles more food types, longer lifespan |
| 1 HP Premium Disposal | $250-$500 unit only | High-use households, premium kitchen remodelsVery quiet, handles virtually all food waste, 8-12 year lifespan |
| Septic-Safe Disposal | $200-$400 unit only | Homes on septic systemsAdds septic enzymes to waste stream, designed for septic systems |
Other Projects in Seattle
Seattle Estimate
Typical Range
$222-$721
vs. National Average
20% above national
Cost Multiplier
1.20x
Cost Per unit
$102-$721
This 1.20x estimate prices Seattle labor from BLS Occupational Employment and Wage Statistics (May 2025) and applies a lighter regional adjustment to materials and permits, which vary less by metro than labor does. Actual bids vary by contractor, project scope, and timing.
See national average costs →