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400 Ostrander Ave, Riverhead, NY 11901 Property Records

Suffolk County and Riverhead Town property record for 400 Ostrander Ave, Riverhead, NY 11901

Property Summary

Property TypeCommercial Office
Details1,140 sqft · built 1997
Lot Size0.73 acres (31,799 sqft)
OwnerCompany Name on Record
Last Sale$441,760 (Aug 2016)
Tax Bill$29,361 (2024)
Deeds & MortgagesMar 2022 Sale
Flood ZoneZone X (minimal risk)
APN473000 127.-2-28

Property Details

APN / Parcel Number

Primary APN473000 127.-2-28
Alternative APNs
  • 0600-127.00-02.00-028.000
  • 300012700000020280000000
  • 47300013902
  • 04

Interior

Stories1 Story
Building Area1,140 sqft Gross Area
Basement Area1,140 sqft

Exterior

Year BuiltBuilt 1997
Effective Year BuiltEffective 1997
Lot Area31,799 sqft (0.73 acres)
Lot Dimensions246 ft deep x 130 ft wide
View / LotBelow Average
Canopy91 sqft

Utilities, Heating & Cooling

Heating FuelGas
Water SourceCommercial

Location & Zoning

Account Number04
Street Address400 OSTRANDER AVE
CityRIVERHEAD
StateNY
Zip11901-4614
Property CategoryCommercial
Property TypeCommercial > Office > Commercial Office
Local Zoning Code03
Legal Description391 BLK D OSTRANDER EST LTS 26-27 685 0000 3
Legal SubdivisionSTONELEIGH WOODS/RIVERHEAD
Legal Block2
Legal Lot Number28
JurisdictionSUFFOLK NY
Township / Civil DivisionRIVERHEAD
Census Block Group3
Census Block3011
Census Tract169800

Owner

Source: Suffolk County and Riverhead 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 RecordCompany Name on Record
Mailing Address416 OSTRANDER AVE, RIVERHEAD, NY 11901-4614
Owner TypeCompany
VestingCompany

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last SaleAug 10, 2016 · Amount on Record
Deed SaleAug 10, 2016 · Amount on Record
Prior SaleMar 1, 2016 · Amount on Record
Deed Book / PageD00012874 / 749
Record UpdatedSep 20, 2026

March 2022: Deed, Transfer

Document TypeDeed
JurisdictionSUFFOLK NY
Recording DateMar 17, 2022
Property Address400 OSTRANDER AVE, RIVERHEAD, NY 11901-4614
Document Number0131470616
Book / Page13147 / 616
Instrument DateMar 4, 2022
Transaction TypeTransfer
Record UpdatedJul 5, 2022

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address400 OSTRANDER AVE, RIVERHEAD, NY 11901-4614

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateNew York
CountySuffolk County
County SubdivisionRiverhead Town
Unified School DistrictRiverhead Central School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$125,000 (-) Land $18,900 Building $106,100$1,531,863 (+13.85%) Land $231,618 Building $1,300,245
2024$29,361.00
2023$125,000 Land $18,900 Building $106,100$1,345,533 Land $203,445 Building $1,142,088

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 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 Policies3 in force
Nearby Flood Claims5 (1979–2010)
Claims Outside the SFHA5 of 5
Most Recent ClaimMar 2010 · Severe Storms And Flooding

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 80% of the US · above 54% of New York
Wildfire Likelihood0.01% 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 SystemRIVERHEAD WATER DISTRICT
serves 35,000 people · EPA ID NY5103705
Water SourceGroundwater
Last State InspectionJul 2025
Lead2 ppb (2025–2027)
action level 15 ppb

Violations Reported to EPA

Water QualityNitrite
resolved · Jul 2023
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 244 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Optimum
Fiber · Cable		8,000 / 8,000

May also be available: T-Mobile, Verizon.

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