Jul 25, 2020 · Average Cost of French Drain Installation. The average cost to install a 100 foot, 2 feet deep exterior french drain in your yard is about $1,200, or $12 per foot for DIY, with no trencher rental. Professional installation of the same french drain outside your foundation and repair of all disturbed soil, cost around $2,350.
Read more: How Much Does It Cost to Build a Wall. When it comes to drywall cost, installed drywall averages somewhere between $1.50 to $1.80 per square foot. And, this amount is when your house has traditional straight walls and flat ceilings.
$0.30 to $0.35 per square foot - residential (driveways) $0.20 to $0.25 per square foot - commercial (parking lots) Cost is calculated by the existing surface. How long since installation or last re-seal. Porosity of aggregate. Size and scope of project Reported by: John Isner, Elite Sealcoating See the Beverly Parking Lots Cost Report