French Drain vs. Surface Drain Cost in 2026: Which Drainage System Do You Need?
French Drain vs. Surface Drain: Cost Comparison for 2026 French drains cost $10-$50 per linear foot installed in 2026, while surface (trench) drains run $30-$150 per linear foot. French drains handle subsurface groundwater -- soggy yards, wet basements, and foundation drainage. Surface drains handle visible runoff -- driveway water, patio pooling, and downspout discharge. A typical 50-foot yard French drain costs $500-$2,500, while a 20-foot driveway trench drain costs $600-$3,000. Across eight drainage installations in Bucks County last year, the most common mistake was homeowners installing the wrong type. One New Hope property had standing water in the yard after every rain, and the homeowner wanted a surface channel drain like his neighbor's driveway. The problem was not surface runoff -- it was a high water table pushing groundwater up through the soil. A 60-foot French drain with perforated pipe and gravel at a 2% grade, discharging to the street,...
How Much Does a French Drain Cost in 2026? (Interior & Exterior Pricing)
How Much Does a French Drain Cost in 2026? French drains cost $10 to $100 per linear foot installed in 2026, with exterior yard drains running $10-$35/ft and interior basement systems running $40-$100/ft. The average residential project falls between $2,000 and $10,000, while full interior basement perimeter systems can reach $4,000-$17,000. The wide price range comes down to one question: are you digging through your yard or cutting through your basement floor? Seven French drain systems installed across eastern Pennsylvania show a pricing gap between exterior and interior work that surprises most homeowners. A 120-foot exterior French drain completed in Lehigh County came to $3,360 -- about $28 per linear foot. A 90-foot interior basement French drain in Allentown came to $7,200 -- $80 per linear foot. Same type of pipe, same gravel, same basic concept. The difference was cutting and removing a concrete floor, working in a confined space,...