914 Yard Drainage & French Drains in Chappaqua & New Castle, NY
Chappaqua’s homes are a mix of older houses and later construction: the typical home was built around 1955, and 64% pre-date 1980. The surrounding Town of New Castle has wooded, sloping lots where yard drainage matters as much as the basement. Larger Westchester properties often have slopes, ledge, retaining walls and mature landscaping, which affect how and where water can be moved. Ask a drainage contractor where the water will go, whether any neighboring property or municipal system is involved, and whether a permit is required for the work.
Yard drainage companies for Chappaqua & New Castle
How we pick: we list up to six companies per page. Independent firms come first, then firms based outside Westchester, then franchise or network affiliates. Companies that name the town as served come before those that serve the whole county. Listings are free, not paid, and not an endorsement. Home improvement license status was looked up in the Westchester County consumer license search on Oct 26 to 27, 2026, plumber license status in the county trade license search on Oct 27, 2026, and NYS mold license status in the state Labor Department data set; each profile shows what we found.
De La Paz Masonry
No rating collected yetWaterproofing, French drains, sump pumps, masonry
Hudson Landscape Contractors & Tree Care Specialists
No rating collected yetDrainage, grading and French drains alongside landscape construction
Mazzacone Contracting
No rating collected yetInterior and exterior waterproofing, drainage, sump pumps, excavation
Santucci Construction
No rating collected yetDrainage diagnostics and installation, French drains, curtain and footing drains, drywells, catch basins, stormwater management, septic, excavation
Sundahl Waterproofing
No rating collected yetInterior and exterior waterproofing, drainage, sump pumps, foundation repair
Gregg Segnit Waterproofing
No rating collected yetBasement and foundation waterproofing, drainage, sump pumps
Housing in Chappaqua & New Castle
| Place | Typical year built | Built before 1950 | Built before 1980 | Median home value |
|---|---|---|---|---|
| Chappaqua | 1955 | 43.9% | 63.6% | $781,100 |
Source: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates (tables B25035, B25034, B25077), retrieved Oct 2026. Estimates carry a margin of error.
Flooding and water in Chappaqua & New Castle
- Westchester County’s Long Island Sound watershed program lists this municipality in the watershed study areas for “Byram River”, “Bronx River”. [source]
- Flood maps are address-specific. Check your own address on FEMA’s flood map service, and ask any contractor how they treat a high water table on your lot. [source]
Permit notes for Chappaqua & New Castle
From the municipality’s own pages, retrieved Oct 2026. Rules change, so call the building department before work starts.
- The town’s building permit application points to separate approvals that may apply before a permit is issued, including steep-slope, wetlands, tree-removal and stormwater review. Drainage work can trigger them. [source]
- Land-development activity, including drainage work, generally needs an approved stormwater plan under the town’s stormwater chapter. [source]
Frequently asked questions
How many yard drainage companies serve Chappaqua & New Castle?
We show 6 of 13 companies we found for Chappaqua & New Castle: 9 name Chappaqua & New Castle as an area they serve, and the rest serve all of Westchester County. Always confirm a company covers your address.
Does Chappaqua & New Castle require a permit for this work?
Often yes. See the permit notes on this page, then call the Chappaqua & New Castle building department before you sign a contract.
Do I need a French drain or just better grading?
If water pools near the foundation after rain, regrading and downspout extensions are the cheapest first step. A French drain helps where grading alone cannot move the water.
Where should downspouts discharge?
Well away from the foundation, onto ground that slopes away, or into a buried line that outlets downhill. Water dumped next to the house can soak back to the footing.
Nearby
Sources
- Westchester County Planning: Long Island Sound Watershed Program (watershed study areas by municipality)
- FEMA Flood Map Service Center (look up your own address)
- Town of New Castle: Building Permit Application
- Town of New Castle Code, Chapter 108A: Stormwater Management and Erosion and Sediment Control
- U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25034, B25035, B25077 (via Census Reporter)
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