433 Ostrander Ave, Riverhead, NY 11901 Property Records

Suffolk County and Riverhead Town property record for 433 Ostrander Ave, Riverhead, NY 11901

Property Summary

Property Type	Single Family Home
Details	4 bd · 1 ba · 1,652 sqft · built 1933
Lot Size	0.25 acres (10,890 sqft)
Owner	2 Individual Names on File
Last Sale	$310,000 (Jun 2011)
Tax Bill	$8,968 (2024)
Deeds & Mortgages	Mar 2022 Sale
Flood Zone	Zone X (minimal risk)
APN	`473000 127.-1-10`

Property Details

APN / Parcel Number

Primary APN	`473000 127.-1-10`
Alternative APNs	`0600-127.00-01.00-010.000` `300012700000010100000000` `47300013840` `04`

Interior

Bedrooms	4 Beds
Full Baths	1 Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,652 sqft Living Area
Gross Area	2,112 sqft
1st Floor Area	868 sqft
2nd Floor Area	784 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1933
Effective Year Built	Effective 1933
Architectural Style	Old Style
Exterior Material	Wood
Lot Area	10,890 sqft (0.25 acres)
Lot Dimensions	219 ft deep x 50 ft wide
View / Lot	Canal
Garage Type	Attached
Garage Area	324 sqft
Parking Spaces	1 Parking Space
Porch	Covered Porch
Porch Area	136 sqft

Utilities, Heating & Cooling

Heating System	Hot Water
Heating Fuel	Oil
Water Source	Commercial

Location & Zoning

Account Number	04
Street Address	433 OSTRANDER AVE
City	RIVERHEAD
State	NY
Zip	11901-4613
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	03
Legal Description	*391 OSTRANDER ESTS LOT 16 BLK C 673 0000 3
Legal Block	1
Legal Lot Number	10
Jurisdiction	SUFFOLK NY
Township / Civil Division	RIVERHEAD
Census Block Group	4
Census Block	4001
Census Tract	169800

Owner

Source: Suffolk County and Riverhead Town records · APN 473000 127.-1-10

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 Record	2 Individual Names on File
Mailing Address	433 OSTRANDER AVE, RIVERHEAD, NY 11901-4613
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jun 01, 2011 · Amount on Record
Deed Sale	Jun 01, 2011 · Amount on Record
Prior Sale	Oct 27, 2004 · Amount on Record
Deed Book / Page	12661 / 474
Last Transfer Date	Nov 12, 2021
Transfer Doc	0131490298
Record Updated	Sep 20, 2026

March 2022: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	SUFFOLK NY
Recording Date	Mar 30, 2022
Property Address	433 OSTRANDER AVE, RIVERHEAD, NY 11901-4613
Document Number	0131490298
Book / Page	13149 / 298
Instrument Date	Nov 12, 2021
Transaction Type	Transfer
Record Updated	Jul 26, 2022

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Irrevocable Trust
Address	68 BEACHFERN RD, CENTER MORICHES, NY 11934-3338

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	New York
County	Suffolk County
County Subdivision	Riverhead Town
Unified School District	Riverhead Central School District (PK - 12)

Tax Bill & Assessment History

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$41,700 (-) Land $6,000 Building $35,700	$511,029 (+13.85%) Land $73,529 Building $437,500
2024	$8,968.00
2023		$41,700 Land $6,000 Building $35,700	$448,870 Land $64,586 Building $384,284

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of September 18, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 22 policies
Nearby Flood Policies	22 in force
Nearby Flood Claims	46 (1978–2020)
Claims Outside the SFHA	21 of 46
Most Recent Claim	Apr 2020 · other causes
Claims by Event	Hurricane Sandy, Oct 2012 · 15 claims Coastal Storm, High Tides, Heavy Rain, & Flooding, Dec 1992 · 8 claims Coastal Storms & Flooding, Mar 1984 · 7 claims

Wildfire

Wildfire Risk	Low lower than 80% of the US · above 54% of New York
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Optimum Communications Fiber · Cable	8,000 / 8,000

May also be available: Verizon.

Based on FCC filings for 317 locations within half a mile of this property.

Cell Coverage

5G (outdoors only) and 4G LTE

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	RIVERHEAD WATER DISTRICT serves 35,000 people
Water Source	Groundwater
Last State Inspection	Jul 2025
Lead	2 ppb (2025–2027) action level 15 ppb

Violations Reported to EPA

Water Quality	Nitrite resolved · Jul 2023
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.