Westchester County
Mold Removal in Larchmont, Where the Houses Predate Damp Proofing
In a village whose median house was finished in 1938, the first useful question about a damp lower level is whether it is a fault at all or simply how the house was built, and that is what we establish before anyone proposes work. Send a photograph of the wall and how far up the staining goes, and you will get a straight read: assessment, removal, drying, or nothing to do.
Request a quote in Larchmont
Tell us what you can see or smell, where in the house it is, and whether water has been in that space before. That last answer is the one that changes our advice most, because a space that has taken water more than once is asking a different question from a space that took it once.
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A coastal consistency review can land on a Larchmont basement job
Larchmont is one square mile and all of it sits inside the state coastal boundary, because the Local Waterfront Revitalization Program shared with the Town of Mamaroneck extends that boundary across the entire village. In practice that means exterior work touching drainage, grading or a foundation can pick up a coastal consistency review from the Larchmont-Mamaroneck Coastal Zone Management Commission on top of the building permit, and the Village Building Department decides which boards a project has to see. Budget weeks for that rather than days, and settle it before you promise yourself a finished lower level by a date. Two things here work in an owner's favor. Larchmont reported two staff holding the CFM floodplain management credential, the only town on this site that reported any, which is unusual depth for a village this size. And it told the county that flooding mainly takes place within the Special Flood Hazard Area, so unlike its neighbors the map panel for an address is genuinely informative here and worth checking first. The counterweight is the fabric itself. With a 1938 median and 54 percent of homes built in 1939 or earlier, below grade walls here commonly have no damp proof membrane and no perimeter drain, so damp can be original construction rather than a failure of anything, which is a very different conversation from a remediation.
How high does the damp run up the wall?
On a pre-1940 foundation with no membrane and no perimeter drain, the height of that line tells us more than the smell does. A photograph and a rough measurement are enough to start.
What we arrange in a square mile of prewar houses
Mold Inspection and Moisture Diagnosis
Find out in writing what is bringing water into your Scarsdale lower level, whether the cause is a fault in your building or a drainage condition outside it, and whether there is a mold job here at all.
Mold Inspection in Larchmont →Mold Removal and Remediation
Get mold out of a finished Scarsdale lower level with a written work plan before anyone cuts, a clear line between what comes out and what stays, and containment that holds until an independent licensee passes the work.
Mold Removal in Larchmont →Water Damage Drying and Basement Dry Out
Get water out of a Scarsdale lower level while it is still a drying job, with the source of the water categorized first, because rain and a sanitary backup change what can be saved.
Water Damage Drying in Larchmont →A 1938 median, inside the state coastal boundary
In the 2019-2023 American Community Survey, Larchmont village has 2,657 housing units with a median year built of 1938, the oldest of the eight towns on this site. 1,436 units, 54.0 percent, were built in 1939 or earlier, and about 91 percent were built before 1980. Of 2,552 occupied units, 69.6 percent are owner occupied.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates, Tables DP04 and B25035, accessed 2026-09-22
The Town of Mamaroneck and Village of Larchmont Local Waterfront Revitalization Program, adopted in 1986 and updated in 1996, "extends the coastal boundary to include the entire Village of Larchmont allowing the Village to apply New York State coastal policy throughout their jurisdictions". The Larchmont-Mamaroneck Coastal Zone Management Commission advises on whether local projects in Larchmont and the unincorporated area of the Town of Mamaroneck are consistent with that plan, and Larchmont's Building Department determines whether construction or special uses need approvals from the Board of Architectural Review, the Coastal Zone Management Commission, the Planning Commission or the Zoning Board of Appeals.
Source: Westchester County Department of Planning, 2021 Countywide Hazard Mitigation Plan, Section 9.34 Village of Larchmont, accessed 2026-09-22
The Village of Larchmont is "a one-square mile jurisdiction situated in southeastern Westchester County. The shoreline community is nestled against Long Island Sound and completely surrounded by the Town of Mamaroneck on three sides." Its annex records that many Village owned critical facilities sit within the Special Flood Hazard Area, that the Village has not designated emergency shelters or locations for temporary and permanent housing outside that area, and that the Byron Place Pumping Station requires upgrades to its relay panels and variable head pumps, since "Failure of the Pumping Station would result in heightened flooding risk". It does not participate in the Community Rating System.
Source: Westchester County Department of Planning, 2021 Countywide Hazard Mitigation Plan, Section 9.34 Village of Larchmont, accessed 2026-09-22
The 2021 county plan reports FEMA data current to July 2021 for the Village of Larchmont: 246 flood insurance policies in force, 433 paid claims, $5,484,076.95 in total loss payments and 44 Repetitive Loss properties. Larchmont told the county that "Flooding mainly takes place within the Special Flood Hazard Area" and that "The Village does not maintain a list of properties damaged by flooding". Its flood damage prevention ordinance is Chapter 337, dated September 15, 2007. It is the only one of the eight towns on this site that reported staff holding the CFM floodplain management credential, with two.
Source: Westchester County Department of Planning, 2021 Countywide Hazard Mitigation Plan, Section 9.34 Village of Larchmont, accessed 2026-09-22
Send the Larchmont photographs and we will read the wall
A person looks at every request and says what it appears to be, including the times it appears to be nothing that needs a contractor at all.