French drain design and installation
A gravel-wrapped perforated pipe set below grade to collect water that sits in the soil and carry it to a safe outlet. We size the trench and set the fall for your lot.
Charleston Drainage Solutions
Yard Drainage & French Drains in Charleston
Standing water after every storm? We design and install drainage that moves water off your lot instead of toward your foundation.
Drainage built for Lowcountry yards
If your Charleston yard turns into a shallow pond after a heavy rain and stays wet for a day or more, you are not imagining a slow yard. You are watching clay soil and compacted subsoil refuse to take water fast enough. Around Charleston, much of the ground under the grass is dense clay and fill that water simply cannot soak through at the rate our storms deliver it. So the water perches at the surface, follows the gentle slope of the lot, and too often that slope runs straight toward the house.
Charleston Drainage Solutions focuses on one problem: getting unwanted water off your property in a controlled way. We design and install french drains, surface catch basins, buried downspout lines, regrading and swales, and dry wells. We look at where water comes from, where it collects, and where it can legally and physically go, then build a path for it that uses the fall your lot actually has.
This is work for homeowners who are tired of soggy lawns, mulch that washes into the driveway, a crawlspace that smells like a swamp in July, or water creeping toward a slab. The right fix depends on your soil, your grade, and where an outlet can run. That is why every job starts with looking at the yard, not with a one-size catalog. If you want to understand the options first, our guide to french drains, surface drains and dry wells is a good place to start.
Why Charleston soil and weather change the work
The Lowcountry gives drainage two problems at once: a lot of water in a hurry, and ground that drains slowly. Summer downpours and tropical systems can drop several inches in an afternoon. On sandy coastal lots that water would sink in, but much of greater Charleston sits on heavy clay and compacted construction fill. Water hits that layer and stops, then spreads sideways across the surface.
A flat water table makes it worse. In low-lying areas around the marsh and tidal creeks, the ground is already close to saturated for much of the year, so there is little room for more water to soak away. That is why a dry well that works fine inland may be useless on a low lot near the water, and why the outlet for a french drain has to be planned around where water can actually leave.
Grading is the other half. Builders often leave lots nearly flat or sloped toward the house after settling. Add clay that holds water and downspouts that empty right at the wall, and you get the standing water and foundation moisture so many Charleston homeowners deal with. A proper fix reads the whole lot: where water enters, the real fall available, and a legal, workable outlet. For the deeper story, see why so many local yards hold water for days after rain.
What we install
Most yards need a combination of these, not just one. We match the method to how water actually behaves on your lot.
Surface catch basins and area drains
Grated inlets set at the low points where water pools, tied into buried pipe. Good for driveways, patios, and that one corner of the lawn that never dries out.
Downspout extension and buried drain lines
Roof water is the biggest single source most yards ignore. We carry it underground away from the foundation instead of dumping it beside the wall.
Yard regrading and swale construction
Sometimes the cheapest fix is reshaping the ground so water runs away from the house. Swales are shallow planted channels that move sheet flow without pipe.
Driveway and window well drainage
Keeping runoff off hard surfaces and out of below-grade openings around the house, where water otherwise collects against the foundation.
Dry well and pop-up emitter installation
Where there is no slope to daylight an outlet, a buried dry well or a pop-up emitter gives collected water somewhere to go.
Guides and advice
Practical answers to the questions we hear most in Charleston, SC.
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French Drain Installation Cost in Charleston, SC
What drives the price of a French drain in Charleston — length, depth, clay soil, outlet options and access — plus how to read an estimate.
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Why Your Charleston Yard Holds Water for Days After Rain
Clay soil, flat grade and compaction keep Lowcountry yards soggy long after the storm passes. Here is what is really happening underground.
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French Drain vs Surface Drain vs Dry Well in Charleston
Three common yard drainage fixes, what each one actually does, and how to tell which your Charleston lot needs based on soil and grade.
Frequently asked questions
How do I know whether I need a french drain or something else?
It depends on where the water is. Water sitting in the soil and keeping the lawn soft usually calls for a french drain, while water pooling on the surface at a low spot is often better handled by a catch basin or regrading. Most Charleston yards need a combination, which is why we look at the lot before recommending anything.
Why does my yard stay wet for days when my neighbor's dries out?
Small differences in grade, soil compaction, and where downspouts empty make a large difference. Charleston's clay subsoil drains slowly, so even a slight low spot or a downspout dumping at the foundation can keep one yard saturated while the lot next door sheds water.
Can you move water away from my foundation?
Yes, that is one of the most common reasons people call. We extend downspouts underground, regrade so the ground falls away from the house, and intercept water with drains before it reaches the slab or crawlspace.
What drives the cost of a drainage project?
The length of pipe, trench depth, how hard the digging is through clay and roots, the number of inlets, and how far the outlet runs. Lots with no easy place to send water cost more because they need a dry well or a longer line. Our article on french drain installation cost explains the main factors.
Which towns do you cover?
We serve Charleston and nearby communities including Mount Pleasant, North Charleston, Goose Creek, Summerville, Hollywood, and Ravenel. Call to confirm we cover your street.
Tired of a soggy yard?
Call to describe what your yard does after rain and where the water ends up. We will walk you through the likely causes and what it would take to fix them.
Serving Charleston and the surrounding Lowcountry.
Areas we serve
We work across the Charleston area and nearby Lowcountry towns: