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40 William St, Ossining, NY 10562 Property Records

Westchester County and Ossining Town property record for 40 William St, Ossining, NY 10562 · Last verified May 2026

Property Highlights

Property TypeResidential > Multi-Unit > Duplex
Bedrooms4 Beds
Bathrooms2 Baths
Year BuiltBuilt 1850
Square Footage1,838 sqft Total Area
Lot Size14,810 sqft (0.34 acres)
OccupancyOwner Occupied
Last Sale$560,000 (2019)
Tax Bill$14,042.00 (2025)

Property Details

APN / Parcel Number

Primary APN554203 97.07-5-18
Alternative APN
  • 55420300323 058 007

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms7 Rooms
Building Area1,838 sqft Total Area
1st Floor978 sqft 1st Floor
Basement Area600 sqft Basement
Finished Basement600 sqft Finished
Unfinished Basement600 sqft Unfinished
Stories2 Stories

Exterior

Year BuiltBuilt 1850
Effective Year BuiltEffective 1850
Architectural StyleTraditional Style
Exterior MaterialAluminum/Vinyl Exterior
Lot Area14,810 sqft (0.34 acres)
Depth X Width242 ft x 60 ft Depth x Width
PorchOpen Porch
Porch Area271 sqft Porch

Utilities and HVAC

Heating SystemHot Water Heating
Heating FuelOil Heating Fuel
SewageMunicipal Sewage
Water SourceCommercial Water Source

Location & Zoning

Street Address40 WILLIAM ST
CityOSSINING
StateNY
Zip10562-5531
Property UsageResidential Property Usage
TypeResidential > Multi-Unit > Duplex
Legal Block5
Legal Lot Number18.000
JurisdictionWESTCHESTER NY
Minor Civil DivisionOSSINING
Census Blockgroup2
Census Block2006
Census Tract13304

Owner

Source: Westchester County and Ossining Town records · APN 554203 97.07-5-18

Assessment roll updated May 14, 2026 · Last verified May 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Individual Names on File
Mailing Address40 WILLIAM ST, OSSINING, NY 10562-5531
OccupancyOwner Occupied
Owner TypeOwner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

DateDocument
Mar 05, 2021Deed of Trust, Mortgage · Conventional Mortgage
FIRST SAVINGS BANK
Jun 04, 2019Bargain and Sale Deed, Transfer
FLATIRON ABSTARCT LLC
Jul 21, 2017Grant Deed, Transfer

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleJun 04, 2019 · Amount on Record
Deed SaleJun 04, 2019 · Amount on Record
Prior SaleJul 21, 2017 · Amount on Record
Deed Doc Number2019591493271
Record RefreshedJun 08, 2026

March 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionWESTCHESTER NY
Property Address40 WILLIAM ST, OSSINING, NY 10562-5531
Transaction TypeMortgage
Record UpdatedApr 02, 2021
Title CompanyDART ABSTRACT LLC, DATA ABSTRACT LLC

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0610643582
DateMar 05, 2021
Instrument610643582
Lender
NameFIRST SAVINGS BANK
TypeBank
AddressCLARKSVILLE, IN 47129
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term359 Months
DueFeb 01, 2051

June 2019: Bargain and Sale Deed, Transfer

Document TypeBargain and Sale Deed
JurisdictionWESTCHESTER NY
Recording DateJun 04, 2019
Property Address40 WILLIAM ST, OSSINING, NY 10562-5531
Document Number0591493271
Instrument DateMay 29, 2019
Instrument591493271
Transaction TypeTransfer
Record UpdatedMay 06, 2022
Title CompanyFLATIRON ABSTARCT LLC

Transaction

AmountAmount Recorded
Tax$2,240.00
Amount AccuracyFull Amount Stated
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name
Address40 WILLIAM ST, 40, OSSINING, NY 10562-5531

Transferred To (Grantee/Buyer)

NameVerified Name
Address3508 100TH ST, CORONA, NY 11368-1853

July 2017: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionWESTCHESTER NY
Recording DateJul 21, 2017
Property Address40 WILLIAM ST, OSSINING, NY 10562-5531
Document Number0571873564
Book / Page057187 / 003564
Instrument DateJul 06, 2017
Transaction TypeTransfer
Record UpdatedSep 24, 2018

Transaction

AmountAmount Recorded
Tax$567.00
Amount AccuracyConfirmed
Additional
  • Notice of Foreclosure Sale
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address15442 26TH AVE FLUSHING NY 113541518, FLUSHING, NY 11354-1518

Tax Assessment & Valuation

Source: Westchester County and Ossining Town records · Assessment roll updated May 14, 2026 · Last verified May 2026

Property Jurisdictions

TypeName
StateNew York
CountyWestchester County
County SubdivisionOssining Town
MunicipalityOssining Village
Unified School DistrictOssining Union Free School District (PK - 12)

Tax Bill & Assessment History

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

YearTax BillAssessed ValueAssessed Market Value
2025$14,042.00$692,500 (-6.58%) Land $228,900 Building $463,600$692,500 (-6.58%) Land $228,900 Building $463,600
2024Additional exemption filed$741,300 (+7.39%) Land $130,800 Building $610,500$741,300 (+7.39%) Land $130,800 Building $610,500
2023$690,300 (+12.08%) Land $130,800 Building $559,500$690,300 (+12.08%) Land $130,800 Building $559,500
2022$615,900 Land $130,800 Building $485,100$615,900 Land $130,800 Building $485,100

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Westchester County (36119C), updated September 18, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Flood HazardMinimal
500-Year FloodplainNo
Special Flood Hazard AreaNo

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.

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