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French Drains Costs & Prices - ProMatcher Cost Report

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French Drains Costs & Prices


We have collected data nationwide to help calculate the average cost of french drains in the US. The following are average costs and prices reported back to us:

Cost of French Drain Installation

$22.32 per linear foot (exterior drain) (Range: $21.30 - $23.33)
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Cost of Dry Well Installation and Construction

$2,718.24 for standard concrete drywell (Range: $2,300.05 - $3,136.43)
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French Drain Installation Cost Guide

By Johnny Flynn

ProMatcher’s French Drain Cost Report is designed to help you learn about the cost of installing a french drain. Use this guide to get pricing information about french drain installation and replacement. You will see that installation costs may vary significantly from city to city. Use our free matching service to request free price quotes from local cleaning companies.

What is a French Drain?

A french drain (which may also be called a curtain drain, perimeter drain, or a footing drain) helps to direct water from your home's foundation. This helps to keep your basement dry, while protecting the structural integrity of your home. In many cases, an exterior french drain is just a sloped, gravel-filled trench with a PVC pipe that helps to move water in the right direction. Installing an interior french drain is a little bit more complicated. The drainage system is usually installed underneath the basement floors and a sump pump helps to move the water out of your home.

You may need to put in a french drain if:
  • You have a wet basement or a basement that floods frequently
  • You have a "soggy yard" or water pools on parts of your lawn when it rains
  • You usually have standing water on your driveway during a rainstorm

How Much Does a French Drain Cost?

On average, it costs about $16.00 to $47.00 per linear foot install an exterior french drain. This typically covers the cost of labor, materials, and equipment rental fees. However, the cost may vary based on a number of different factors including the length of the drain pipe and the unique site conditions. This ballpark estimate is based on research completed by our team, as well as pricing information collected from contractors around the country.

Average Cost to Install a French Drain
Charlotte, NC$18.55 - $20.32 per linear foot
Chicago, IL$23.26 - $25.48 per linear foot
Columbus, OH$18.31 - $20.06 per linear foot
Houston, TX$18.35 - $20.10 per linear foot
Indianapolis, IN$17.35 - $19.01 per linear foot
Jacksonville, FL$18.49 - $20.25 per linear foot
Los Angeles, CA$27.18 - $29.78 per linear foot
New York, NY$43.12 - $47.24 per linear foot
Philadelphia, PA$25.17 - $27.58 per linear foot
San Antonio, TX$19.04 - $20.86 per linear foot
San Diego, CA$26.33 - $28.84 per linear foot
Seattle, WA$24.16 - $26.47 per linear foot
Free French Drains Cost Estimates


Factors Impacting the Cost of French Drain Installation

1. Your geographic location
Prices can vary significantly by region. Labor costs, in particular, will can vary greatly - even within the same state. For example, the cost to install a french drain in Brooklyn, NY may be very different than the cost in Buffalo, NY. Overall, wages tend to be higher in major cities where the cost of living is well above the national average.

2. Exterior or interior french drains
Interior french drain can be much more expensive than exterior french drains. These projects tend to be more labor-intensive and they may require additional equipment and materials. For example, you may also need to install a sump pump or additional basement waterproofing.

3. Length of drain
French drain installers typically quote jobs by the linear foot. The longer the drain, the more you can expect to spend.

4. Trench depth
Most exterior french drains will have a trench that is about 3 feet deep. Interior french drains usually require deeper trenches. This additional excavation work may increase the cost of the job.

5. Equipment required
What type of equipment does the job require? Can the trenches be dug by hand? For larger projects, it may be more efficient to use a backhoe excavator.

6. Permitting
Putting in a french drain may require a permit in some areas. If this is the case, you will be responsible for any additional permit inspection fees.

Last Updated: February 15, 2022

Find Costs & Prices in Your City


French Drains Cost Data

46624, South Bend, Indiana - February 26, 2020

French Drain Installation

$18.29 to $20.03 per linear foot (exterior drain)
Cost includes labor for french drain installation. Also includes trench excavation, perforated piping, backfill material, and equipment rental. Items not included: re-landscaping, sump pumps, indoor drains, dry well installation, and decorative grates.

Reported by:
ProMatcher Research Team
See the South Bend French Drains Cost Report
23232, Richmond, Virginia - May 25, 2021

Dry Well Installation and Construction

$2,299.00 to $3,135.00 for standard concrete drywell
Price includes labor for dry well installation. Items included: mid-size, concrete dry well (700 gallons), excavation, trenching, gravel, and piping materials. Cost does not take into account construction permits, percolation test, or oversized drywells.

Reported by:
ProMatcher Research Team
See the Richmond French Drains Cost Report
45056, Oxford, Ohio - February 26, 2020

French Drain Installation

$18.98 to $20.80 per linear foot (exterior drain)
This estimated price for french drain construction assumes typical conditions. The base cost tends to cover digging a trench to re-route flow of water (depth up to 24"), laying PVC piping, and backfilling trench with gravel. There is generally an increased cost for sump pump replacement, interior french drain installation, dry well construction, and ornate drain covers.

Reported by:
ProMatcher Research Team
See the Oxford French Drains Cost Report
24416, Buena Vista, Virginia - May 25, 2021

Dry Well Installation and Construction

$2,061.40 to $2,811.00 for standard concrete drywell
Cost takes into account the price of drywell construction. No additional charge for excavating soil, installing a concrete drywell (700 gallon capacity), trench digging, laying pipes, and spreading gravel. Price does not account for soil analysis, perc test, cost of permits, and larger dry wells.

Reported by:
ProMatcher Research Team
See the Buena Vista French Drains Cost Report
61125, Rockford, Illinois - February 26, 2020

French Drain Installation

$18.39 to $20.14 per linear foot (exterior drain)
Estimate takes into account labor. It also includes digging a trench to re-route flow of water (depth up to 24"), laying PVC piping, and backfilling trench with gravel. Cost estimate excludes re-landscaping, sump pumps, indoor drains, dry well installation, and decorative grates.

Reported by:
ProMatcher Research Team
See the Rockford French Drains Cost Report
24572, Madison Heights, Virginia - May 25, 2021

Dry Well Installation and Construction

$2,092.20 to $2,853.00 for standard concrete drywell
Manhours for dry well installation are included in cost. Estimate includes excavating, digging trench, pre-cast concrete 700-gallon drywell, laying gravel, and installing necessary pipes. Items excluded: construction permits, percolation test, or oversized drywells.

Reported by:
ProMatcher Research Team
See the Madison Heights French Drains Cost Report
24112, Martinsville, Virginia - February 26, 2020

French Drain Installation

$17.33 to $18.99 per linear foot (exterior drain)
This quote is a ballpark figure for french drain installation. This estimate price accounts for trench excavation, perforated piping, backfill material, and equipment rental. Extra fees may apply for interior french drains, sump pump installation, dry wells, and decorative drain covers.

Reported by:
ProMatcher Research Team
See the Martinsville French Drains Cost Report
18101, Allentown, Pennsylvania - May 25, 2021

Dry Well Installation and Construction

$2,171.40 to $2,961.00 for standard concrete drywell
This estimate includes drywell construction. Also includes excavating soil, installing a concrete drywell (700 gallon capacity), trench digging, laying pipes, and spreading gravel. There is an additional cost for soil analysis, perc test, cost of permits, and larger dry wells.

Reported by:
ProMatcher Research Team
See the Allentown French Drains Cost Report
50010, Ames, Iowa - February 26, 2020

French Drain Installation

$19.26 to $21.10 per linear foot (exterior drain)
Cost estimate range considers french drain construction labor. Accounts for the price of digging sloped trench (2' to 4" deep) in yard, putting in perforated pipe, and backfilling with gravel or crushed stone. Items excluded: interior french drains, sump pump installation, dry wells, and decorative drain covers.

Reported by:
ProMatcher Research Team
See the Ames French Drains Cost Report
31402, Savannah, Georgia - May 25, 2021

Dry Well Installation and Construction

$2,057.00 to $2,805.00 for standard concrete drywell
Estimate takes into account labor. It also includes mid-size, concrete dry well (700 gallons), excavation, trenching, gravel, and piping materials. Cost estimate excludes construction permits, percolation test, or oversized drywells.

Reported by:
ProMatcher Research Team
See the Savannah French Drains Cost Report
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Disclaimer: Costs and prices shown on the ProMatcher site are intended to be used as general information, not as guaranteed estimates. To obtain cost information relevant to your project, request a quote or estimate from a local service provider.
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