129 Ostrander Ave, Riverhead, NY 11901 Property Records

Suffolk County and Riverhead Town property record for 129 Ostrander Ave, Riverhead, NY 11901

Property Summary

Property Type	Commercial Office
Details	1,056 sqft · built 1958
Lot Size	0.08 acres (3,485 sqft)
Owner	Company Name on Record
Tax Bill	$7,961 (2024)
Deeds & Mortgages	Feb 2019 Sale Mar 2018 Sale
Flood Zone	Zone X (minimal risk)
APN	`473000 129.-3-15.2`

Property Details

APN / Parcel Number

Primary APN	`473000 129.-3-15.2`
Alternative APNs	`0600-129.00-03.00-015.002` `300012900000030150020000` `47300014441` `04`

Interior

Stories	1 Story
Building Area	1,056 sqft Gross Area

Exterior

Year Built	Built 1958
Effective Year Built	Effective 1958
Lot Area	3,485 sqft (0.08 acres)
Lot Dimensions	146 ft deep x 22.5 ft wide

Location & Zoning

Account Number	04
Street Address	129 OSTRANDER AVE
City	RIVERHEAD
State	NY
Zip	11901-4643
Property Category	Commercial
Property Type	Commercial > Office > Commercial Office
Local Zoning Code	DC5
Legal Description	489.5 0000 1
Legal Block	3
Legal Lot Number	15
Jurisdiction	SUFFOLK NY
Township / Civil Division	RIVERHEAD
Census Block Group	4
Census Block	4025
Census Tract	169800

Owner

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

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

Owner of Record	Company Name on Record
Mailing Address	100 COMAC ST, RONKONKOMA, NY 11779-6928
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Date	Document
Feb 15, 2019	Grant Deed, Transfer
Mar 16, 2018	Grant Deed, Transfer FIDELITY NATIONAL TITLE

Assessor's Deed Record

Deed Names	Name on Deed
Record Updated	Sep 20, 2026

February 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SUFFOLK NY
Recording Date	Feb 15, 2019
Property Address	129 OSTRANDER AVE, RIVERHEAD, NY 11901-4643
Document Number	0130010120
Book / Page	013001 / 000120
Instrument Date	Jan 17, 2019
Transaction Type	Transfer
Record Updated	Mar 13, 2019

Transaction

Amount	Amount Recorded
Tax	$504.00
Amount Accuracy	Confirmed
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	100 COMAC ST RONKONKOMA NY 117796928, RONKONKOMA, NY 11779-6928

March 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SUFFOLK NY
Recording Date	Mar 16, 2018
Property Address	129 OSTRANDER AVE, RIVERHEAD, NY 11901-4643
Document Number	0129540176
Book / Page	012954 / 000176
Instrument Date	Jan 18, 2018
Transaction Type	Transfer
Record Updated	May 1, 2018
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount Recorded
Tax	$600.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	5170 COUNTY RD MATTITUCK NY 11952, MATTITUCK, NY 11952

Tax Assessment & Valuation

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$38,000 (-) Land $5,000 Building $33,000	$465,686 (+13.85%) Land $61,275 Building $404,412
2024	$7,961.00
2023		$38,000 Land $5,000 Building $33,000	$409,042 Land $53,821 Building $355,221

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
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

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 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 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 System	RIVERHEAD WATER DISTRICT serves 35,000 people · EPA ID NY5103705
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, 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

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

May also be available: T-Mobile, Verizon.

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