9 William St, Smithtown, NY 11787 Property Records

Suffolk County and Smithtown Town property record for 9 William St, Smithtown, NY 11787 · Last verified August 2026

Property Highlights

Property TypeResidential > Single Family > Home
Lot Size10,890 sqft (0.25 acres)
OccupancyOwner Occupied
Last Sale$650,000 (2023)
Tax Bill$8,881.00 (2024)

Owner

Source: Suffolk County and Smithtown Town records · APN 473489 134.-4-4

Assessment roll updated August 11, 2026 · Last verified August 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 Address9 WILLIAM ST, SMITHTOWN, NY 11787-5719
OccupancyOwner Occupied
Owner TypeOwner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

DateDocument
Apr 07, 2021Deed of Trust, Mortgage · Stand Alone Refinance
TEACHERS FCU
Jan 10, 2023Deed, Transfer · Adjustable Rate Mortgage (ARM)
BETHPAGE FCU

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleJan 10, 2023 · Amount on Record
Deed SaleJan 10, 2023 · Amount on Record
Prior SaleNov 23, 1999 · Amount on Record
Deed Book / Page13184 / 505
Record RefreshedSep 20, 2026

April 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSUFFOLK NY
Property Address9 WILLIAM ST, SMITHTOWN, NY 11787-5719
Transaction TypeMortgage
Record UpdatedApr 21, 2026

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0232560708
DateApr 07, 2021
Book Page23256/708
InstrumentDM001381
Lender
NameTEACHERS FCU
TypeCredit Union
Agreement
TypeStand Alone Refinance
AmountAmount Recorded
Term181 Months
DueMay 01, 2036

January 2023: Deed, Transfer

Document TypeDeed
JurisdictionSUFFOLK NY
Recording DateJan 10, 2023
Property Address9 WILLIAM ST, SMITHTOWN, NY 11787-5719
Document Number0131840505
Book / Page13184 / 505
Instrument DateOct 26, 2022
Transaction TypeTransfer
Record UpdatedApr 21, 2026
Title CompanyMISC COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address23 OVERLOOK DR, SYOSSET, NY 11791-1408
InvestorPossibly a Property Investor

Mortgage

Document Number0023472201
DateJan 10, 2023
Instrument23472/201
Lender
NameBETHPAGE FCU
TypeCredit Union
Agreement
TypeAdjustable Rate Mortgage (ARM)
AmountAmount Recorded
Term337 Months
DueFeb 01, 2051
Interest
Rate TypeAdjustable Rate
Rate5.3%
Type Change DateDec 01, 2032
Index1-Year CMT

Tax Assessment & Valuation

Source: Suffolk County and Smithtown Town records · Assessment roll updated August 11, 2026 · Last verified August 2026

Property Jurisdictions

TypeName
StateNew York
CountySuffolk County
County SubdivisionSmithtown Town
Unified School DistrictSmithtown Central School District (KG - 12)

Tax Bill & Assessment History

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

YearTax BillAssessed ValueAssessed Market Value
2025$3,720 (-) Land $120 Building $3,600$465,000 (+10,774.65%) Land $15,000 Building $450,000
2024$8,881.00
2023$3,720 Land $120 Building $3,600$4,276 Land $138 Building $4,138

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Suffolk County (36103C), 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.

Property Details

APN / Parcel Number

Primary APN473489 134.-4-4
Alternative APNs
  • 0800-134.00-04.00-004.000
  • 348913400000040040000000
  • 47340031480

Exterior

Lot Area10,890 sqft (0.25 acres)

Location & Zoning

Street Address9 WILLIAM ST
CitySMITHTOWN
StateNY
Zip11787-5719
Property UsageResidential Property Usage
TypeResidential > Single Family > Home
Legal Description4-162401 TC-68 *20 LOTS 5-6-7&8 BIRCHCROFT COLONY BLK T
Legal SubdivisionMAP BIRCHCROFT COLONY
Legal Block4
Legal Lot Number4
JurisdictionSUFFOLK NY
Minor Civil DivisionSMITHTOWN
Census Blockgroup3
Census Block3025
Census Tract135306

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