Foundation Drainage Install Cost in District of Columbia in 2026
Most Foundation Drainage Install projects in District of Columbia cost between $1,700 and $23,000. The typical price is $7,000.
Labour and materials in District of Columbia run about 18% 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