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Pricing guide

How Much Does a French Drain Cost in Pennsylvania?

Most residential french drain projects in the Hershey and Harrisburg area run between $3,000 and $12,000. The range is wide because no two water problems are the same. Here's what actually drives the number, so you can walk into your estimate knowing what to expect.

What you can expect to pay

  • Yard / surface french drain: roughly $3,000–$6,000 for a typical run to fix standing water or a soggy low spot.
  • Exterior foundation french drain: roughly $6,000–$12,000+ depending on depth, length, and access for excavation.
  • Interior basement french drain + sump: roughly $5,000–$12,000 depending on perimeter length and finishes that have to be worked around.

These are planning ranges, not a quote. The only honest price comes from looking at your home.

What drives the price

  • Length and depth of the run, the single biggest factor
  • Interior vs. exterior, exterior means excavation, interior means cutting and restoring slab
  • Discharge, to daylight is cheapest; a sump pit or dry well adds cost
  • Access, tight lots and obstacles (decks, landscaping, finished space) add labor
  • Soil and water table, the clay and high-water-table ground common across the Lebanon Valley can mean more work

Why the cheapest quote usually isn't

The french drains that get ripped out and replaced are almost always the cheap ones, installed without filter fabric, with dirty stone, or at a slope that doesn't drain. They fail in a few years and you pay twice. A drain built right lasts 20 to 30 years. Pay once.

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Questions

Cost questions

How much does a french drain cost in Pennsylvania?

Most residential french drain projects in the Hershey and Harrisburg area run between $3,000 and $12,000, depending on length, depth, whether it is interior or exterior, and how the water is being discharged. Simple yard drains sit at the low end; full basement perimeter systems with a sump pump sit higher. We give a firm price after a free on-site look, never a vague phone quote.

How long does a french drain last?

A correctly installed french drain, with proper filter fabric, clean stone, and the right slope, typically lasts 20 to 30 years or more. That is a general industry range, not a promise about any one job. The french drains that fail early were almost always installed without fabric, with the wrong stone, or at the wrong slope. Done right, it is a one-time fix.

Interior or exterior french drain, which do I need?

It depends on your home and lot. Exterior drains intercept water before it reaches the foundation and are ideal when there is room to excavate. Interior drains are the practical choice for finished basements, tight urban lots, or homes where outside digging is not feasible. We walk your property and recommend the one that actually solves the problem, not the one that is easiest for us.

Do you offer free estimates?

Yes. Requesting an estimate here is free and comes with no obligation. A real drainage estimate is done on-site, looking at your grade, your foundation, and where the water is actually coming from, not quoted blind over the phone.

Should my french drain installer be licensed and insured?

Yes, always. Any contractor you hire for drainage work in Pennsylvania should carry liability insurance and be a registered PA home improvement contractor. Ask for the proof before any work begins. It is a fair question, and a good installer will have a straight answer.

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