French drain installation costs between $6,000 to $10,000 depending on the size of the basement and the amount of sump pumps that are installed.

Thereof, how much does it cost to have French drain installed?

Having a landscaper or other professional install outdoor French drains can cost $10-$30 a linear foot but averages about $25/foot depending on depth and width (typically 12″-24″ deep and 6″-18″ wide), and local rates. A French drain 30′-50′ long might cost $300-$1,500, with prices averaging about $750-$1,250.

Subsequently, question is, how much does it cost to install interior drain tile? A typical full-perimeter drain tile installation can run between $8,000 and $15,000, depending on the choice of sump pumps and other accessories or additions. A four-wall installation is not always necessary and the cost will be reduced proportionately for smaller jobs.

Just so, do I need a permit to install a French drain?

Modern, effective French drains are composed of an underground, perforated drain pipe buried in an 8- to 12-inch-wide trench filled with gravel. A permit to construct a French drain may or may not be required, depending on the regulations in your municipality.

How much does it cost to install a basement drain?

Basement drain systems come in different types, so installation costs vary between $1,000 and $5,000.

Average Cost of Installing Basement Drains

  • French drain: $1,000-$5,000. They can be very effective, but need to be maintained by a qualified contractor or plumber to avoid clogs.
  • Floor drain: $3,200.
  • Sump pump: $1,100.

Related Question Answers

Can I install a French drain myself?

Fortunately, you can collect runoff water and channel it to an appropriate outlet with a French drain. Depending on the size of your yard and the scale of your drainage issue, you can purchase the pipes and equipment to install a French drain yourself without the expense of calling in a professional.

Does a French drain need to be sloped?

A French drain needs a slope of no less than 1%. That means from the highest point of the drain field all the way to the drain exit, the system should slope at least 1 inch for every 8 feet of length.

Do French drains need an outlet?

A properly designed French drain system does not require an outlet. The water will simply soak into the soil as it flows along the perforated pipe. In fact, a French drain doesn't require an inlet on just one end either. You can construct the drain to accept water along its length, and disperse it underground.

How long will a French drain last?

approximately 30 to 40 years

Are French drains legal?

Legal issues

In the U.S., municipalities may require permits for building drainage systems as federal law requires water sent to storm drains to be free of certain contaminants and sediment. In the UK, local authorities may have specific requirements for the outfall of a French drain into a ditch or watercourse.

How do you install a French drain in your yard?

Installing French Drains 01:50
  1. Dig a trench along the outside of your footing.
  2. Lay the pipe on the virgin soil.
  3. Cover the pipe with at least 12 inches of washed gravel.
  4. Lay filter fabric over the gravel to prevent any soil from clogging the pipe.
  5. Back-fill the foundation with top soil back to its original grade height.

How big of a French drain do I need?

A French drain starts with digging a trench. The depth and width of the trench can vary, but 5 to 6 inches wide and 8 to 12 inches deep are common sizes and usually satisfy most needs.

Will a French drain keep my basement dry?

Actually, one of the best ways to keep a basement dry has nothing to with sealing or coating or plugging anything. A French drain, often called “drain tile,” installed inside or outside the foundation, will keep most basements dry and never requires maintenance or replacement.

Do I need a permit to dig a trench?

Do I need a permit to trench? You typically won't need a permit to trench in your backyard if your intended trench depth is less than 1m. However, you will need to contact Dial Before You Dig to identify existing utilities that may be running across your yard or work site.

How much gravel do I need for a French drain?

French drain gravel should be washed three quarter inch minimum and as large as 1 ½ ” crushed stone. The upper 12 inches above the pipe shall be filled with native soil, to avoid having crushed stone over the perforated pipe that could damage the pipe.

Do you need a permit to install a dry well?

You may need to obtain a permit.

Your local municipality might require you to have a permit before beginning construction. Dry well permits typically cost between $25 and $50, which is considerably less than the cost of a normal building permit.

Do you need a permit for drainage?

In most cases, you don't need a permit from the city for drainage work on your property. If the work involves changing any structure on your property or involve any electrical work to install a sump pump, then a permit may be necessary.

Do you need a permit to put in a sump pump?

The sump pump may not under any circumstances, discharge into a paved or unpaved street, road, alley, parking lot, building sewer or sanitary main sewer line. Do I need a permit and/or inspection to install a sump pump? Yes, both a plumbing permit and inspections are required to install a sump pump.

Why install a French drain?

A French drain is a pipe placed in the ground to collect rain water. French drains are often used in yards and in basements that have drainage problems. French drains are used to transport excess water to low lying areas where the water will do no damage.

Do French drains work?

French drains provide an easy channel for water to flow through. Water runs into a gravel-filled trench, then into perforated pipe at the bottom of the trench. Water travels freely through the pipe, which empties a safe distance from the house.

Does landscaping require a permit?

Landscape projects usually do NOT require a permit. On decks and other landscape projects, permit requirements vary depending on the municipality in which the work is to be done. The higher the deck and the closer it is built to a property line, the more likely a permit will be required.

How do you calculate waterproofing?

This is typically the waterproofing of an entire wall or a part of a wall. The average cost for exterior excavation and waterproofing done by a contractor is $100-$250 per linear foot (depending on the excavation depth and accessibility). This project can take up to 24 hours of work, depending on the number of walls.

How much does it cost to put in a drainage system?

Installing drainage runs most homeowners between $1,889 and $5,488 with an average cost of $3,680. Small, simpler solutions could be as low as $800 and more complicated projects could get as expensive as $8,000.

How much does it cost to install a sump pump and French drain?

French drain installation costs between $6,000 to $10,000 depending on the size of the basement and the amount of sump pumps that are installed.