Foundation Drainage Install Cost in Maple Valley, WA in 2026
Most Foundation Drainage Install projects in Maple Valley, WA cost between $1,600 and $22,000. The typical price is $6,500.
Labour and materials in Maple Valley run about 13% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Softscape planting versus hardscape construction
- Irrigation and lighting
- Grading and drainage work
- Plant maturity at installation
Usually included
- Design layout and plant material
- Soil preparation and mulch
- Installation labour
Usually extra
- Ongoing maintenance
- Permits for grading
- Retaining walls over 3 ft
Landscaping companies in Maple Valley, WA
Businesses listed on Google near Maple Valley, WA. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Cedar County Landscaping
4.9(163 reviews)
25145 Summit Dr, Black Diamond, WA 98010
Blue Sky Landscape LLC
4.9(76 reviews)
26910 200 Ave SE, Covington, WA 98042
The Blue Alder
5.0(39 reviews)
20250 SE 206th St, Maple Valley, WA 98038
Landscape Pick Up, LLC
5.0(34 reviews)
18705 SE 284th Pl, Kent, WA 98042
Primed Landscaping
4.9(31 reviews)
21020 SE 256 Pl, Maple Valley, WA 98038
Ramos Landscape & Garden's LLC
5.0(10 reviews)
20846 SE 240th St, Maple Valley, WA 98038