1 Dupont St, Plainview, NY 11803 Property Records

Nassau County and Oyster Bay Town property record for 1 Dupont St, Plainview, NY 11803

Property Summary

Property TypeCommercial Office
Details60,880 sqft · built 1964
Lot Size1.9 acres (82,786 sqft)
OwnerCompany Name on Record
Last Sale$3,350,000 (Dec 2008)
Tax Bill$317,361 (2025)
Deeds & MortgagesMay 2026 Mortgage
Jul 2023 Construction Loan
Flood ZoneZone X (minimal risk)
APN13-117-00-0031

Property Details

APN / Parcel Number

Primary APN13-117-00-0031
Alternative APNs
  • 2489-13-117-00-0031-0
  • 13117000031000000000
  • 282489 13.-117-31
  • 13117 00310

Interior

Units30 Units
Stories1 Story
Building Area60,880 sqft Gross Area
1st Floor Area40,880 sqft
Interior WallsFinished/Painted

Exterior

Year BuiltBuilt 1964
Effective Year BuiltEffective 1964
Exterior MaterialBrick Veneer
Construction TypeSteel Frame
Fire ResistanceMasonry Walls, Wood Interior
Lot Area82,786 sqft
View / LotCommercial/Industrial
Shed1 Shed
Shed Area140 sqft

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemHVAC
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number13117 00310
Street Address1 DUPONT ST
CityPLAINVIEW
StateNY
Zip11803-1658
Property CategoryCommercial
Property TypeCommercial > Office > Commercial Office
Legal DescriptionTOWN #3 SCH DIST 019
Legal Block117
Legal Lot Number31
JurisdictionNASSAU NY
Township / Civil DivisionOYSTER BAY
Census Block Group1
Census Block1012
Census Tract519702

Owner

Source: Nassau County and Oyster Bay Town records, as of July 22, 2026

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

Owner of RecordCompany Name on Record
Mailing Address35 ANDREW RD, MANHASSET, NY 11030-2311
Owner TypeCompany
VestingCompany

Deeds, Mortgages & Sale History

DateDocument
May 6, 2026Deed of Trust
HANOVER COMMUNITY BANK
Jul 7, 2023Deed of Trust, Mortgage · Construction Mortgage
BANKUNITED NA

Assessor's Deed Record

Deed NamesName on Deed
Last SaleDec 30, 2008 · Amount on Record
Deed SaleDec 30, 2008 · Amount on Record
Deed Book / Page12467 / 373
Prior Transfer DateDec 19, 2008
Prior Transfer Doc0124670000000373
Record UpdatedSep 20, 2026

May 2026: Deed of Trust

Document TypeDeed of Trust
JurisdictionNASSAU NY
Recording DateMay 6, 2026
Property Address1 DUPONT ST, PLAINVIEW, NY 11803-1658
Document Number0000029483
Book / Page48454 / 632
Instrument DateApr 14, 2026
Instrument202629483
Record UpdatedJul 22, 2026
Title CompanyAME ABSTRACT LLC, DIME ABSTRACT LLC

Transferred To (Grantee/Buyer)

NameVerified Name
Address1 DUPONT ST, PLAINVIEW, NY 11803-1658

Mortgage

Document Number0000029483,
DateMay 6, 2026
Book Page48454/632
Instrument202629483
Lender
NameHANOVER COMMUNITY BANK
Agreement
AmountAmount Recorded
Interest
Rate6.22%
Max Rate-1%

July 2023: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionNASSAU NY
Property Address1 DUPONT ST, PLAINVIEW, NY 11803-1658
Transaction TypeMortgage
Record UpdatedJul 12, 2023

Transferred To (Grantee/Buyer)

NameVerified Name
Address1 DUPONT ST, PLAINVIEW, NY 11803-1658

Mortgage

Document NumberM472020381
DateJul 7, 2023
Book PageM47202/381
Instrument2023-39741
Lender
NameBANKUNITED NA
TypeBank
AddressHIALEAH, FL 33016
Agreement
TypeConstruction Mortgage
AmountAmount Recorded

Tax Assessment & Valuation

Source: Nassau County and Oyster Bay Town assessment roll, as of June 17, 2026

Property Jurisdictions

TypeName
StateNew York
CountyNassau County
County SubdivisionOyster Bay Town
Unified School DistrictPlainview-Old Bethpage Central School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$28,908 (-31.27%) Land $9,601 Building $19,307$2,890,800 (-31.27%)
2025$317,361.00 (+0.24%)$42,061 (-) Land $13,970 Building $28,091$4,206,100 (-)
2023$316,604.00$42,061 Land $13,970 Building $28,091$4,206,100

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

Source: FEMA National Flood Hazard Layer, effective April 5, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on Record
median of 13 policies
Nearby Flood Policies13 in force
Nearby Flood Claims4 (1979–1982)
Claims Outside the SFHA3 of 4
Most Recent ClaimJan 1982 · tidal / storm surge

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

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

Wildfire RiskNot rated
no burnable land within 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 SystemPLAINVIEW WD
public/private · serves 34,000 people · EPA ID NY2902845
Water SourceGroundwater
Last State InspectionJun 2024
LeadUnder 1 ppb (2021–2023)
action level 15 ppb

Violations Reported to EPA

Water QualityTetrachloroethylene
resolved · Jul 2017
cis-1,2-Dichloroethylene
resolved · Jul 2017
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 160 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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