21 Dillon Rd, Larchmont, NY 10538 Property Records

Westchester County and Mamaroneck Town property record for 21 Dillon Rd, Larchmont, NY 10538

Property Summary

Property TypeSingle Family Home
Details3 bd · 2.5 ba · 1,610 sqft · built 1934
Lot Size0.09 acres (3,920 sqft)
Owner2 Individual Names on File
Last Sale$470,000 (Sep 2003)
Tax Bill$16,528 (2026)
Flood ZoneZone X (moderate risk)
APN553289 5-5-205

Property Details

APN / Parcel Number

Primary APN553289 5-5-205
Alternative APNs
  • 328900500502050000000000
  • 317400

Interior

Bedrooms3 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Stories2 Stories
Building Area1,610 sqft Living Area
1st Floor Area818 sqft
2nd Floor Area792 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1934
Effective Year BuiltEffective 1934
Architectural StyleTraditional
Exterior MaterialAluminum/Vinyl
Lot Area3,920 sqft (0.09 acres)
Lot Dimensions100 ft deep x 38 ft wide
Garage TypeDetached
Garage Area414 sqft
Parking Spaces2 Parking Spaces
PorchPorch
Porch Area154 sqft
Patio Area201 sqft

Utilities, Heating & Cooling

Heating SystemHot Water
Heating FuelOil
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number317400
Street Address21 DILLON RD
CityLARCHMONT
StateNY
Zip10538-3428
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR-6
Legal Block205
JurisdictionWESTCHESTER NY
Township / Civil DivisionMAMARONECK
Census Block Group1
Census Block1015
Census Tract7000

Owner

21 Dillon Rd is owned and occupied by two individuals who bought it in September 2003.

Source: Westchester County and Mamaroneck Town records, as of October 21, 2026

Owner of Record2 Individual Names on File
Mailing Address21 DILLON RD, LARCHMONT, NY 10538-3428
OccupancyOwner Occupied
Owner TypeIndividual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleSep 9, 2003 · Amount on File
Deed SaleSep 9, 2003 · Amount on File
Deed Document Number2003432250612
Record UpdatedOct 29, 2026

Tax Assessment & Valuation

The 2026 property tax bill for 21 Dillon Rd was $16,528.

Source: Westchester County and Mamaroneck Town assessment roll, as of May 14, 2026

Property Jurisdictions

TypeName
StateNew York
CountyWestchester County
County SubdivisionMamaroneck Town
Unified School DistrictMamaroneck Union Free School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$16,528.00
2025$775,000 (+1.97%) Land $305,000 Building $470,000$775,000 (+1.97%) Land $305,000 Building $470,000
2024$760,000 (+4.97%) Land $305,000 Building $455,000$760,000 (+4.97%) Land $305,000 Building $455,000
2023$724,000 Land $305,000 Building $419,000$724,000 Land $305,000 Building $419,000

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 21 Dillon Rd in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.

Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
moderate risk
500-Year FloodplainYes
0.2% annual chance
Nearest Special Flood Hazard AreaZone AE, within 100 ft
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on File
median of 26 policies
Nearby Flood Policies26 in force
Nearby Flood Claims36 (1978–2024)
Claims Outside the SFHA15 of 36
Most Recent ClaimAug 2024 · rainfall accumulation
Claims by Event
  • Remnants Of Hurricane Ida, Sep 2021 · 3 claims
  • Hurricane Sandy, Oct 2012 · 8 claims
  • Hurricane Irene, Aug 2011 · 3 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Wildfire risk around 21 Dillon Rd is low, with less than a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 95% of the US · lower than 94% of New York
Wildfire LikelihoodUnder 0.01% annual chance
ExposureDirect
burnable vegetation

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemWESTCHESTER JOINT WATER WORKS
serves 59,629 people · EPA ID NY5903435
Water SourceSurface water
Last State InspectionMar 2025
Lead3 ppb (2026–2028)
action level 15 ppb

Violations Reported to EPA

Water QualityFailure to filter
currently in violation since Jun 1993
Haloacetic acids
resolved · Jul 2019
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 304 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Optimum
Fiber · Cable
8,000 / 8,000
Verizon
Fiber · Fixed Wireless in parts of the area
2,300 / 2,300
T-Mobile
Fixed Wireless
100 / 20

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