Basic
$146 – $487 per project
Surface pressure-washed with a general cleaner to lift moss, mold and algae, debris rinsed off
How Much Does Remove Surface Moss Mold And Algae Cost in Seattle, Washington?
Pressure/soft-wash to remove surface moss, mold and algae from one exterior hard surface (patio/driveway/walk ~200-600 sq ft); roof cleaning costs more.
Remove Surface Moss Mold And Algae in Seattle, Washington typically costs $172 to $573 per project as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Remove Surface Moss Mold And Algae in Seattle, Washington
$172 – $573
per projectPrices in Seattle are 19.0% higher than the national average for remove surface moss mold and algae.
National average: $150 – $500 per project
What you get at each price level
Standard
$172 – $573 per project
Algaecide pretreatment, surface-cleaner pass, joints and edges wand-detailed, full rinse
Premium
$215 – $716 per project
Algaecide pretreatment with dwell time, surface-cleaner pass, joints flushed, plants protected, preventive post-treatment
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $70 – $234 | job |
| Labor | labor | $70 – $235 | job |
| Supplies & Other | supplies | $19 – $62 | job |
| Equipment & Disposal | equipment | $12 – $42 | job |
Prices adjusted for Seattle local market conditions.
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($67.50-$225.00 per project)
- Labor ($52.50-$175.00 per project)
- Supplies & Other ($18.00-$60.00 per project)
- Equipment & Disposal ($12.00-$40.00 per project)
Local Price Adjustments
Material costs4.0% above avg
Labor costs34.0% above avg
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Frequently Asked Questions
References
- Cajun Softwash - Patio Cleaning Cost (2026), cajunsoftwash.com, retrieved Nov 2026
- CalculatedHome - Pressure Washing Cost (2026), calculatedhome.com, retrieved Nov 2026
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
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