Basement Waterproofing in Westchester County, NY

Westchester homes sit on a rolling, rocky landscape of ledge, glacial till and hillside lots, and many were built decades ago on stone, brick or block foundations. Water finds a way in through the floor-wall joint, cracks and old walls, particularly after heavy rain. Waterproofing contractors here typically offer interior perimeter drains with a sump pump, exterior excavation and membranes, crack injection, wall panels and crawl space work.

What to know in Westchester

Homes on hillsides, near brooks and rivers, and along the Long Island Sound shore can see very different water patterns, so the right fix depends on where the water comes from. For a house with finished space or valuable contents, ask each company to show you the source of the water and to explain what happens in a power outage.

Budgeting? See our Basement Waterproofing Cost in Westchester, NY guide.

Waterproofing by town

14 waterproofing companies serving Westchester County

Independent firms first, then out-of-county firms, then franchise or network affiliates. Ratings show their source; blank means we have not collected one. Listing is free and is not an endorsement.

Frequently asked questions

Is interior or exterior waterproofing better?

Exterior work stops water at the wall face but means digging out the foundation, which is disruptive and costs more, especially around mature landscaping. Interior drainage systems collect water that gets through and send it to a sump pump. Ask each company to explain why it recommends one approach for your house.

Will a sealer paint fix my wet basement?

Coatings can help with minor dampness, but they rarely stop water under pressure from saturated soil. If you see water at the floor-wall joint or through cracks, get a drainage assessment first.

How many quotes should I get?

At least three written quotes that spell out linear feet of drain, pump model, warranty terms, restoration and who pulls any permit.

Should I fix gutters and grading first?

Often yes. Downspouts that discharge next to the foundation and soil that slopes toward the house are common, inexpensive causes of basement water.

Does the contractor need a Westchester County license?

Westchester County requires home improvement contractors to be licensed by the county Department of Consumer Protection. Ask for the license number and check it in the county's online search before you sign. See our guide on how to check a license.

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