Grading and Drainage Cost: Pricing Guide for Landscapers
Yard grading costs $1,500-$5,000 for standard residential lots, or $1.50-$4.00 per sq ft depending on scope and soil conditions. French drain installation runs $15-$35 per linear foot. Catch basins cost $300-$600 each installed. Dry wells run $800-$2,500 depending on capacity. Complete drainage systems combining multiple solutions average $3,000-$10,000 for residential properties.
Grading and drainage work solves some of the most urgent problems homeowners face — water pooling against foundations, flooded yards, and erosion damaging landscapes. These projects carry strong margins because the work requires expertise that homeowners cannot easily DIY, and the consequences of poor drainage (foundation damage, flooding) make price less of an objection. This guide covers how to price every drainage solution in your toolbox.
Yard Regrading Pricing
Yard regrading redirects surface water away from structures by reshaping the terrain. For minor regrading (adjusting 2-3 inches of grade over existing soil), charge $1.50-$2.50 per sq ft. This involves a skid steer or compact tractor to cut high areas and fill low spots, followed by fine grading with a landscape rake. For major regrading requiring significant cut-and-fill (6+ inches of grade change), charge $2.50-$4.00 per sq ft. If topsoil import is needed, add $30-$50 per cubic yard delivered, with one cubic yard covering about 100 sq ft at 3 inches deep. Equipment costs for regrading include skid steer rental ($250-$400/day) or mini excavator ($300-$500/day). A two-person crew can regrade 1,000-2,500 sq ft per day depending on complexity. Always shoot grades with a laser level before and after — document the drainage slope to show the client exactly what they are getting.
French Drain Installation Pricing
French drains are the most versatile subsurface drainage solution. Price at $15-$35 per linear foot for standard installations. The cost breakdown per linear foot: excavation of a 12-inch wide by 18-24 inch deep trench ($3-$8), perforated pipe 4-inch diameter ($1-$2), drainage gravel to fill the trench ($4-$8), filter fabric wrap ($0.50-$1.50), and backfill with topsoil and seed or sod on top ($2-$5). Labor runs $5-$12 per linear foot depending on soil conditions and access. A typical residential French drain runs 40-80 linear feet for $600-$2,800. The outlet is critical — water must discharge to daylight (a slope or swale) or into a dry well or municipal storm drain. Pop-up emitters at discharge points cost $25-$50 each installed. For interior basement waterproofing French drains, prices jump to $40-$80 per linear foot due to concrete cutting and sump pump requirements — this is specialty work that some landscapers subcontract.
Catch Basins and Dry Wells
Catch basins collect surface water from low points and channel it through underground pipe. A standard 12-inch catch basin with grate costs $80-$150 for materials and $200-$450 for installation including excavation and pipe connection. Larger 18-24 inch basins for higher-volume collection run $300-$600 installed. Connect catch basins with 4-inch solid pipe to the discharge point at $8-$15 per linear foot. Dry wells collect water underground and allow it to percolate into the soil. A standard residential dry well (50-gallon capacity) costs $400-$800 installed. Larger systems using multiple chambers or wrapped aggregate pits run $1,200-$2,500. Dry wells require soil with decent percolation — clay soils may need engineered solutions or alternative discharge. Always perform a simple perc test (dig a 12-inch hole, fill with water, time how long it takes to drain) during your site visit to verify dry well feasibility before quoting.
Swales, Berms, and Surface Drainage
Surface drainage solutions are often the most cost-effective approach when topography allows. Grassed swales (shallow channels graded to direct water) cost $5-$15 per linear foot including excavation, grading, and seeding. Lined swales with river rock or riprap run $15-$40 per linear foot. Berms (raised earth mounds to redirect water) cost $8-$20 per linear foot including soil, grading, and seeding or planting. Rain gardens (planted depressions designed to collect and filter runoff) combine drainage function with aesthetic appeal at $15-$30 per sq ft including excavation, amended soil, plants, and mulch. Rain gardens are an excellent upsell for environmentally conscious clients and can qualify for municipal rebates in some areas. Channel drains across driveways or patios run $25-$50 per linear foot installed, including the drain channel, grate, and connection to the outlet pipe.
Downspout and Gutter Drainage Extensions
Downspout drainage is one of the highest-value services relative to effort. A surprising number of foundation water problems stem from downspouts dumping water directly at the foundation. Underground downspout extensions cost $12-$25 per linear foot including 4-inch solid pipe, elbow fittings, and a pop-up emitter or discharge point. A typical home needs 4-8 downspouts extended 10-20 feet each, totaling $500-$4,000 for the project. The work is fast — a two-person crew can install 4-6 downspout extensions in a day. Materials per extension run $50-$120 (pipe, fittings, emitter), with labor at $150-$300 each. Offer downspout extensions as a standalone service or bundle with gutter cleaning. Present the cost of foundation repair ($5,000-$15,000+) as comparison to emphasize the value of proper downspout management. This is an easy add-on to sell during any landscaping project near the house.
Site Assessment and Designing Drainage Solutions
A proper drainage assessment is essential before quoting and should be presented as a value-added service. Charge $150-$350 for a drainage assessment that includes: visual inspection of problem areas during or after rain if possible, laser level grade measurements, soil type identification, downspout and surface runoff mapping, and a written recommendation with solution options. This assessment fee can be credited toward the project if the client proceeds. During the assessment, identify the water source (surface runoff, subsurface springs, poor grading, downspout discharge, neighbor runoff), the volume of water to manage, and the best discharge point. Present good-better-best solutions: basic regrading, regrading plus French drain, or comprehensive system with multiple components. Document everything with photos and measurements — drainage clients are highly motivated to solve their problem and will pay for a thorough, professional solution.
Frequently Asked Questions
Yard regrading costs $1.50-$4.00 per sq ft depending on the scope of earth moving required. Minor grade adjustments (2-3 inches) are at the lower end, while significant cut-and-fill work with imported soil pushes toward the higher end. A typical residential regrading project for 2,000-3,000 sq ft costs $3,000-$10,000.
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