1. Home
  2. New York
  3. Nassau County
  4. Syosset
  5. Underhill Blvd

425 Underhill Blvd, Syosset, NY 11791 Property Records

Nassau County and Oyster Bay Town property record for 425 Underhill Blvd, Syosset, NY 11791

Property Summary

Property TypeWarehouse, Storage
Details80,100 sqft · built 1963
Lot Size3.76 acres (163,786 sqft)
OwnerCompany Name on Record
Last Sale$8,600,000 (Mar 2019)
Deeds & MortgagesMar 2019 Sale
Mar 2019 Mortgage
Flood ZoneZone X (minimal risk)
APN15-169-00-0012

Property Details

APN / Parcel Number

Primary APN15-169-00-0012
Alternative APNs
  • 2489-15-169-00-0012-0
  • 15169000012000000000
  • 282489 15.-169-12
  • 15169 00120

Interior

Units4 Units
Stories1 Story
Building Area80,100 sqft Gross Area
1st Floor Area80,100 sqft
Interior WallsFinished/Painted
Fire SprinklersFire Sprinklers

Exterior

Year BuiltBuilt 1963
Effective Year BuiltEffective 1963
Exterior MaterialBrick Veneer
Construction TypeSteel Frame
Fire ResistanceMasonry Walls, Wood Interior
Lot Area163,786 sqft
Lot Dimensions56.8 ft deep x 29.4 ft wide
View / LotCommercial/Industrial

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemHVAC
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number15169 00120
Street Address425 UNDERHILL BLVD
CitySYOSSET
StateNY
Zip11791-3433
Property CategoryIndustrial
Property TypeIndustrial > Warehouse, Storage
Legal DescriptionTOWN #3 SCH DIST 014
Legal Block169
Legal Lot Number12
JurisdictionNASSAU NY
Township / Civil DivisionOYSTER BAY
Census Block Group2
Census Block2022
Census Tract518300

Owner

Source: Nassau County and Oyster Bay Town records, as of June 17, 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 Address345 UNDERHILL BLVD, SYOSSET, NY 11791-3425
Owner TypeCompany
VestingCompany

Deeds, Mortgages & Sale History

DateDocument
Mar 4, 2019Bargain and Sale Deed, Transfer
FIRST AMERICAN TITLE
Mar 13, 2019Grant Deed, Mortgage
SYOSSET PROP PTRS LLC

Assessor's Deed Record

Deed NamesName on Deed
Last SaleMar 4, 2019 · Amount on Record
Deed SaleMar 4, 2019 · Amount on Record
Deed Document Number201919103
Deed Book / Page13774 / 405
Record UpdatedOct 29, 2026

March 2019: Bargain and Sale Deed, Transfer

Document TypeBargain and Sale Deed
JurisdictionNASSAU NY
Recording DateMar 4, 2019
Property Address425 UNDERHILL BLVD, SYOSSET, NY 11791-3433
Document Number0137740405
Book / Page13774 / 405
Map ReferenceLB 9163 PG 740
Instrument DateFeb 19, 2019
Instrument2019-019103
Transaction TypeTransfer
Record UpdatedMay 14, 2021
Title CompanyFIRST AMERICAN TITLE

Transaction

AmountAmount Recorded
Tax$34,400.00
Amount AccuracyCalculated from Transfer Tax
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name
Address2 RODEO DR, 2, EDGEWOOD, NY 11717-8316

Transferred To (Grantee/Buyer)

NameVerified Name
Address345 UNDERHILL BLVD, SYOSSET, NY 11791-3425

March 2019: Grant Deed, Mortgage

Document TypeGrant Deed
JurisdictionNASSAU NY
Recording DateMar 13, 2019
Property Address425 UNDERHILL BLVD, SYOSSET, NY 11791-3433
Document Number0433400881
Book / Page043340 / 000881
Instrument DateFeb 1, 2019
Instrument22498
Transaction TypeMortgage
Record UpdatedApr 16, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Multiple Parcels

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address1 WEST ST MINEOLA NY 115014813, MINEOLA, NY 11501-4813

Mortgage

Document Number433400881
DateMar 13, 2019
Book Page043340/000881
Instrument22498
Lender
NameSYOSSET PROP PTRS LLC
AddressSYOSSET, NY 11791-9034
Agreement
AmountAmount Recorded
Term24 Months
DueMar 12, 2021

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 DistrictSyosset Central School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$49,145 (-) Land $36,852 Building $12,293$4,914,500 (-)
2023Additional exemption filed$49,145 Land $36,852 Building $12,293$4,914,500

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
Nearby Flood Policies1 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

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

Wildfire RiskLow
lower than 99.1% of the US · lower than 99.2% 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 SystemJERICHO WD
public/private · serves 58,000 people · EPA ID NY2902831
Water SourceGroundwater
Last State InspectionOct 2023
Lead2 ppb (2026)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureCorrosion control
Jul 2023
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 100 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Verizon
Fiber · Fixed Wireless in parts of the area		2,300 / 2,300
Optimum
Cable · Fiber in parts of the area		940 / 35
T-Mobile
Fixed Wireless		100 / 20

Nearby Properties on Underhill Blvd

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures