What Kind of Contractor Do I Need for a Flooded Basement?
A wet basement can come from outside — groundwater, poor drainage, a cracked foundation — or from inside — a burst pipe, a failed sump pump, a backed-up drain. The source decides the trade. And because standing water and electrical panels so often share a basement, safety has to come before anyone starts diagnosing.
Safety first
Never step into a flooded basement with the power on — water touching an outlet or the panel can energize the whole floor. Cut power at the main only if you can reach it without standing in water; otherwise call an electrician or your utility.
The 4 trades this job usually needs
A single problem often spans several trades. Here is who does what, and why.
Inspect any outlets, panels, or circuits that got wet before they are re-energized.
Water and electricity in a basement is a serious shock and fire risk — this is checked first.
For inside sources — a burst pipe, failed sump pump, or drain backup — repair the source and restore drainage.
An inside-water source keeps flooding until it is fixed.
For outside water, address the real cause: grading, drainage, foundation cracks, or a sump system.
Groundwater is a waterproofing and drainage problem, not a plumbing one, and cracks can be structural.
Extract the water, dry the space, and remediate mold in soaked drywall, insulation, or flooring.
Materials left wet grow mold within a couple of days.
Not sure this matches your situation?
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Describe my problem →Common questions
Who do I call first for a flooded basement?
Safety first: if water is near outlets or the panel, get an electrician or your utility to make it safe. Then a plumber (for an inside source) or a waterproofing/foundation pro (for outside water) fixes the cause, and a restoration crew dries it out.
Why does my basement flood only when it rains?
That points to outside water — grading that slopes toward the house, overwhelmed gutters and downspouts, or foundation cracks. It is a drainage and waterproofing fix, not a plumbing one.
Is a little basement water a big deal?
Even small, repeated water leads to mold and can undermine the foundation over time. It is worth diagnosing the source rather than just mopping up.
Do I need a sump pump?
If groundwater is the source, often yes — a sump pump plus proper drainage is a common fix. A waterproofing pro can tell you whether your situation calls for one.