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10 William St, Central Islip, NY 11722 Property Records

Suffolk County and Islip Town property record for 10 William St, Central Islip, NY 11722

Property Summary

Property TypeSingle Family Home
Lot Size0.15 acres (6,534 sqft)
Owner2 Individual Names on File
Last Sale$101,250 (Nov 2017)
Tax Bill$9,466 (2024)
Deeds & MortgagesFeb 2024 Mortgage
Feb 2024 Transfer
+ 1 more
Flood ZoneZone X (minimal risk)
APN472889 99.-2-16

Property Details

APN / Parcel Number

Primary APN472889 99.-2-16
Alternative APNs
  • 0500-099.00-02.00-016.000
  • 288909900000020160000000
  • 472800219640
  • 395380

Exterior

Lot Area6,534 sqft (0.15 acres)
Lot Dimensions90 ft deep x 75 ft wide

Location & Zoning

Account Number395380
Street Address10 WILLIAM ST
CityCENTRAL ISLIP
StateNY
Zip11722-2405
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeB
Legal DescriptionX2222757Y207977 T012H00000000
Legal SubdivisionPHILIP WOHLFARTH
Legal Block9000
Legal Lot Number200
JurisdictionSUFFOLK NY
Township / Civil DivisionISLIP
Census Block Group2
Census Block2009
Census Tract145706

Owner

10 William St is owned and occupied by two individuals who acquired it in December 2023.

Source: Suffolk County and Islip Town records, as of August 11, 2026

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

Owner of Record2 Individual Names on File
Mailing Address10 WILLIAM ST, CENTRAL ISLIP, NY 11722-2405
OccupancyOwner Occupied
Owner TypeIndividual
VestingIndividual(s)

Deeds, Mortgages & Sale History

DateDocument
Feb 15, 2024Deed of Trust, Mortgage · FHA Mortgage
CROSSCOUNTRY MORTGAGE INC
Feb 15, 2024Quit Claim Deed, Transfer
Quitclaim
Nov 21, 2017Quit Claim Deed, Transfer
EAGLE ABSTRACT CORPORATION

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleNov 21, 2017 · Amount on File
Deed SaleNov 21, 2017 · Amount on File
Prior SaleNov 15, 2016 · Amount on File
Deed Document Number201770205896
Deed Book / Page12938 / 759
Last Transfer DateDec 5, 2023
Transfer Doc1323000337
Record UpdatedSep 20, 2026

February 2024: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSUFFOLK NY
Property Address10 WILLIAM ST, CENTRAL ISLIP, NY 11722-2405
Transaction TypeMortgage
Record UpdatedOct 24, 2025

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0235670158
DateFeb 15, 2024
Book Page23567/158
Lender
NameCROSSCOUNTRY MORTGAGE INC
TypeMortgage Company
Agreement
TypeFHA Mortgage
AmountAmount on Record
Term253 Months
DueMar 1, 2045

February 2024: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSUFFOLK NY
Recording DateFeb 15, 2024
Property Address10 WILLIAM ST, CENTRAL ISLIP, NY 11722-2405
Document Number0132360337
Book / Page13236 / 337
Instrument DateDec 5, 2023
Transaction TypeTransfer
Record UpdatedApr 9, 2024

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address10 WILLIAM ST, CENTRAL ISLIP, NY 11722-2405

November 2017: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSUFFOLK NY
Recording DateNov 21, 2017
Property Address10 WILLIAM ST, CENTRAL ISLIP, NY 11722-2405
Document Number0129380759
Book / Page012938 / 000759
Instrument DateNov 20, 2017
Transaction TypeTransfer
Record UpdatedJan 3, 2018
Title CompanyEAGLE ABSTRACT CORPORATION

Transaction

Tax$0.00
Additional
  • Quitclaim

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address10 WILLIAM ST CENTRAL ISLIP NY 117222405, CENTRAL ISLIP, NY 11722-2405

Tax Assessment & Valuation

Source: Suffolk County and Islip Town assessment roll, as of August 11, 2026

Property Jurisdictions

TypeName
StateNew York
CountySuffolk County
County SubdivisionIslip Town
Unified School DistrictCentral Islip Union Free School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$29,600 (-) Land $5,500 Building $24,100$416,902 (-) Land $77,465 Building $339,437
2024$9,466.00$29,600 (-) Land $5,500 Building $24,100$416,902 (+2.54%) Land $77,465 Building $339,437
2023$29,600 (-) Land $5,500 Building $24,100$406,593 (+13.74%) Land $75,549 Building $331,044
2022$29,600 Land $5,500 Building $24,100$357,488 Land $66,425 Building $291,063

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 10 William St in Zone X, an area of minimal flood risk.

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

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies2 in force

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 10 William St 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 97% of the US · lower than 96% of New York
Wildfire LikelihoodUnder 0.01% annual chance
ExposureNone
beyond ember reach

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 SystemSUFFOLK COUNTY WATER AUTHORITY
serves 1,100,000 people · EPA ID NY5110526
Water SourceGroundwater
Last State InspectionJan 2024
Lead1 ppb (2025–2027)
action level 15 ppb

Violations Reported to EPA

Water QualityAsbestos
resolved · Jul 2020
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 512 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

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