914 Sump Pumps & Backup in Armonk & North Castle, NY
Armonk (Town of North Castle) skews newer than the coastal villages: the typical home was built around 1989, though 43% still pre-date 1980. On large wooded lots, drainage and grading often matter more than the basement wall itself. Storms that bring heavy rain often bring power outages, which is when pumps are needed most and most likely to fail. A battery backup or water-powered backup, plus a discharge line that sends water well away from the house, are worth discussing for any home that relies on a pump. Plumbing work in Westchester can require a county trades license in addition to a home improvement license; see our licensing guide.
Sump pumps companies for Armonk & North 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
Mazzacone Contracting
No rating collected yetInterior and exterior waterproofing, drainage, sump pumps, excavation
Naclerio Construction LLC
No rating collected yetBasement waterproofing, drainage, masonry and foundation work
Noble Plumbing & Heating
No rating collected yetSump pump and sewage injector pump installation, repair and maintenance; plumbing and heating
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
Plumbing licenses
Westchester County issues plumbing licenses separately from home improvement licenses, through its trade licenses search. We searched that database on Oct 27, 2026. Where a company or its plumber appears there, the license number is shown on its profile. A name that is not found means only that we found no record under that name, so ask any company that installs or connects a sump pump who does the plumbing and confirm that license number with the county. Work outside the building, such as a yard drain, is often not plumbing work, and rules vary by town.
Housing in Armonk & North Castle
| Place | Typical year built | Built before 1950 | Built before 1980 | Median home value |
|---|---|---|---|---|
| Armonk | 1989 | 13.6% | 43.2% | $1,073,300 |
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 Armonk & North Castle
- Westchester County’s Long Island Sound watershed program lists this municipality in the watershed study areas for “Silvermine, Mill and Mianus Rivers”, “Byram River”, “Bronx River”. [source]
- The town publishes a floodplain development permit application for work in flood hazard areas. [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 Armonk & North Castle
From the municipality’s own pages, retrieved Oct 2026. Rules change, so call the building department before work starts.
- Excavation and related work need a building permit from the Town of North Castle Building Department, 17 Bedford Road, (914) 273-3000 ext. 44. [source]
- A sump pump that ties into drainage, a floor drain or a sewage ejector may need a plumbing permit. [source]
- Excavation, grading and watercourse work can trigger town stormwater review. [source]
What it costs
A modeled White Plains estimate puts sump pump work at $840 to $3,673, with a midpoint near $1,574 (RenoVetted). Nationally, HomeGuide cites $600 to $2,500 for installation including the unit, and $400 to $700 to replace an existing pump. Jobs that need a new pit cut into a concrete slab, a battery backup or a longer discharge run cost more. Full cost guide with sources.
Frequently asked questions
How many sump pumps companies serve Armonk & North Castle?
We show 6 of 13 companies we found for Armonk & North Castle: 6 name Armonk & North Castle as an area they serve, and the rest serve all of Westchester County. Always confirm a company covers your address.
Does Armonk & North Castle require a permit for this work?
Often yes. See the permit notes on this page, then call the Armonk & North Castle building department before you sign a contract.
How long does a sump pump last?
It depends on the pump and how often it runs. Pumps in wet basements that cycle frequently wear out sooner. Test yours every few months by pouring water into the pit.
Do I need a backup pump?
If your basement takes water whenever the pump stops, a backup is cheap insurance against an outage or a stuck float switch.
Nearby
Sources
- Westchester County Planning: Long Island Sound Watershed Program (watershed study areas by municipality)
- Town of North Castle: Floodplain Development Permit Application
- FEMA Flood Map Service Center (look up your own address)
- Town of North Castle: Building Applications & Information
- Town of North Castle: Plumbing Permit Application
- Town of North Castle Code, Chapter 267: Stormwater Management
- U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25034, B25035, B25077 (via Census Reporter)
Get up to 3 quotes in Armonk & North Castle
Tell us about your project and we'll connect you with local pros. Free, no obligation.
Start my free quote request