Mold & Water Damage Restoration 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. New York's mold law generally requires a licensed mold assessor to write the plan and clear the job, and a separate licensed remediation contractor to do the work, so the same company should not be both on one project. You can check license status in the NYS Department of Labor's open dataset. Listings here that carry a mold license note the number and expiry we saw, but always re-check before hiring. Mold work in a Westchester home can also require the county home improvement license.

Mold & water damage 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.

Housing in Chappaqua & New Castle

PlaceTypical year builtBuilt before 1950Built before 1980Median home value
Chappaqua195543.9%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

What it costs

We did not find a published Westchester-specific mold price list, so these are national HomeGuide ranges: $1,500 to $6,000 for a partial basement, $6,000 to $15,000 for a full basement, and $500 to $1,500 for a small area of 10 to 100 square feet. A mold inspection is $300 to $650 for an average home. In New York, a separate licensed assessor and licensed remediator are generally required on larger jobs, which can affect total cost. Full cost guide with sources.

Frequently asked questions

How many mold & water damage companies serve Chappaqua & New Castle?

We show 6 of 8 companies we found for Chappaqua & New Castle: 0 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 licensed contractor for basement mold?

In New York, mold assessment and remediation on areas larger than about ten contiguous square feet generally require licensed professionals under Labor Law Article 32. Ask for the license number and check it with the NYS Department of Labor.

Can I clean mold myself?

The EPA says small areas can often be cleaned by homeowners, while larger areas may warrant professional help. Either way the moisture source must be fixed.

Nearby

Sources

  1. Westchester County Planning: Long Island Sound Watershed Program (watershed study areas by municipality)
  2. FEMA Flood Map Service Center (look up your own address)
  3. U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25034, B25035, B25077 (via Census Reporter)

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