The scope
What We Handle
French drains
Subsurface drains that pull water away from the foundation and wet spots.
Yard & surface drainage
Catch basins, channel drains, and downspout tie-ins.
Erosion control
Grading and stabilization that keep soil and slopes in place.
Drainage grading
Re-grading so water runs away from the house, not toward it.
Often paired with grading and excavation.
Why Chonko
Why Fix Your Drainage With Chonko Construction
Water is patient.
The whole lot, not a patch.
We diagnose grade, soil, and downspouts together, not one symptom.
Drains plus grading
French drains and catch basins where water collects, regrading so it never gets there.
In writing first
The scope, schedule, and price are set before we open a trench.
Cost drivers
What Drives the Price
Every lot drains differently, so we set the exact number in writing after we walk the site.
Columbia & the Midlands
Drainage in the Midlands
South Carolina's clay soil sheds water slowly and our summer storms drop a lot of it fast.
Serving Columbia & the Midlands
© OpenStreetMap contributors © CARTO
Frequently Asked Questions
What is a French drain?add
A French drain is a gravel-filled trench with a perforated pipe that collects and redirects water away from a foundation or low spot. Chonko Construction installs French drains and yard drainage across Columbia and the Midlands.
Why do I have standing water in my yard?add
Standing water usually comes from poor grading, compacted or clay soil, or downspouts dumping near the house. The fix is regrading for runoff plus drains where water collects. Chonko Construction evaluates the lot and recommends the right combination.
How much does drainage work cost in Columbia, SC?add
Cost depends on the length of drain, access, and how much regrading is needed. Every Chonko Construction project starts with a written scope, schedule, and price before work begins. Typical Midlands ranges are published in our french drain cost guide.
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