Build a French-drain installation planning scenario from entered trench dimensions, excavation amount, pipe, gravel and fabric materials, discharge equipment, removal or disposal, labor, permit, and access assumptions. The calculator does not diagnose water entry, model hydraulics, design drainage, establish legal discharge, locate utilities, or determine soil, groundwater, structure, environmental, safety, permit, or code requirements.
Reviewed 2026-08-24
This French-drain planning result is derived from entered run length, trench depth and width, excavation amount per cubic yard, pipe, gravel and fabric, discharge equipment, removal or disposal, labor, permit, access, and matching ZIP factors; it does not select or validate a drainage solution.
This page answers what the entered inputs produce under the calculator's documented assumptions. It does not answer what a local provider will charge, approve, diagnose, finance, or guarantee.
Use the result to compare like-for-like scenarios, then replace placeholders with current project records, bids, supplier quotes, authority requirements, or qualified professional review before acting.
The French-drain model converts entered length, depth, and width to cubic yards for the entered excavation amount, adds run-length pipe and gravel or fabric materials, direct discharge, disposal, and permit amounts, and access-adjusted entered labor.
Example entered French-drain scenario
The model uses about 7.41 cubic yards and adds $370.37 excavation + $500 pipe + $800 gravel or fabric + $200 + $300 + $1,000 labor + $100 = $3,270.37.
The modeled planning total is about $3,270.37 for the entered concept; it is not a finding that the drain will work.
Build a yard-drainage planning scenario from entered run length, pipe and catch-basin materials, aggregate or fabric materials, excavation equipment, discharge or restoration, labor, access, and permit assumptions. The calculator does not diagnose drainage, model hydraulics, establish legal discharge, locate utilities, design grading, or determine soil, groundwater, environmental, or permit requirements.
Model a roof-replacement planning range from roof area, a reference asphalt installed-cost baseline, material, pitch, complexity, tear-off, and available ZIP factors. It is not a contractor quote or market price.
Model grading and leveling from area, depth, equipment hours, your crew/equipment rate, soil, access, material, haul-off, allowances, and available location factors. It is not a contractor quote.
Build an input-derived termite-treatment planning scenario from the perimeter, treatment-rate assumption, bait stations, inspection or monitoring, and any structural or fumigation allowance you enter. It is not an inspection or contractor quote.
Build a sprinkler-system installation planning scenario from measured area, zones, heads, pipe, labor, access, controller or backflow equipment, permit or design allowances, and available geographic factors.
Build a well-drilling planning scenario from entered drilling depth and rate, access, casing, pump or pressure equipment, electrical or plumbing, testing or permit allowances, and available geographic factors. It does not determine whether a site can produce safe or adequate water.
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CostSignals results are planning estimates based on the values you enter and the calculator’s configured assumptions. Verify current rates, rules, project scope, and quotes independently before making decisions.
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Enter the measured run length from a documented project layout. Length alone does not determine alignment, slope, pipe size, inlet, outlet, capacity, or suitability.
Enter the average depth from the defined excavation takeoff. This calculator does not recommend depth or provide trench-safety guidance.
Enter the average width from the defined excavation takeoff. This calculator does not determine working clearance, protective systems, or excavation methods.
Enter a documented all-in amount for the defined excavation volume. It remains unindexed and must use the same length, depth, and width basis. Do not use this field as an excavation or safety plan.
Enter a documented material-only amount for the specified pipe and fittings using the same run-length basis. The calculator does not select pipe, perforation, diameter, or connections.
Enter a documented material-only amount per run foot for the specified aggregate, fabric, bedding, and related materials. The calculator does not determine quantities or product suitability.
Enter a quoted or budgeted amount for the defined sump, pump, basin, outlet, connection, erosion protection, or other discharge equipment scope. It remains unindexed and does not establish a legal or suitable discharge.
Enter the quoted or budgeted removal, hauling, disposal, and surface-restoration amount. It remains unindexed so the entered project amount is not adjusted again.
Enter billable hours from the documented layout, excavation coordination, installation, bedding, connection, backfill, restoration, cleanup, and closeout scope.
Enter a documented billable rate matching the labor-hours definition. The calculator does not provide a current local wage or installer rate.
Enter only a current project amount verified with the applicable authority. It remains unindexed and does not establish drainage, discharge, stormwater, right-of-way, environmental, or inspection requirements.
Apply an explicit labor-only access factor. It does not assess utilities, trench safety, soil, groundwater, slope, structures, interior conditions, equipment feasibility, or safe work methods.
Used only for available matching material or labor factors. It does not provide drainage analysis, utility locations, project pricing, design, approval, or provider availability.
All figures shown are estimates based on average costs and may vary significantly based on your specific situation, contractor, materials, and local conditions.
We recommend consulting with licensed professionals in your area for accurate quotes tailored to your specific needs.
