Water and crawl spaces
Crawl space drainage and sump systems
Tier B · 26 towns covered
Interior perimeter drainage and a pump to move groundwater away before it reaches the space under your floor.
There's a standard way of doing this, and a lot of judgement about how far it needs to go.
What people notice first
- Water sitting on the ground under the house after a storm
- A tide line or silt mark along the base of the foundation wall
- A pump that runs constantly, or one that has stopped running at all
- Ground that never fully dries out between rains
How crews normally tackle it
The usual approach is a perimeter drain below the level of the crawl floor feeding a pump, sized to the volume of water actually arriving. Where the pump discharges matters as much as the pump itself.
$5,000 – $12,000 — typical range, not a quote. What your home needs can only be settled by a registered contractor who comes out and looks at it.
Want a number before you decide?
Write down what you've noticed. We'll route it to registered local contractors and step out of the way.
Tell us what's happening → Call (609) 568-8654Coverage
Where we can route this
The ground differs across the county, so this doesn't apply everywhere.
Inland mainland
Inland streets where the ground drains fast but the water table still comes up to meet the floor.
Bayfront and lagoon
Filled lots cut back from the bay, where a crawl space can be damp on a dry day because the tide is up.
Long Beach Island
Narrow island lots with the ocean one side and the bay the other, and sandy ground under everything.