91 Union Ave, Islip, NY 11751 Property Records

Suffolk County and Islip Town property record for 91 Union Ave, Islip, NY 11751

Property Summary

Property Type	Single Family Home
Lot Size	0.21 acres (9,148 sqft)
Owner	Individual Name on Record
Last Sale	$750,000 (Oct 2025)
Tax Bill	$11,541 (2024)
Deeds & Mortgages	Oct 2025 Sale
Flood Zone	Zone X (minimal risk)
APN	`472889 396.-4-73`

Property Details

APN / Parcel Number

Primary APN	`472889 396.-4-73`
Alternative APNs	`0500-396.00-04.00-073.000` `288939600000040730000000` `472800829810` `033430`

Exterior

Lot Area	9,148 sqft (0.21 acres)
Lot Width	68.3 ft Width

Location & Zoning

Account Number	033430
Street Address	91 UNION AVE
City	ISLIP
State	NY
Zip	11751-3919
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	B
Legal Description	X2218167Y183388 T059H00000000H
Legal Block	6000
Legal Lot Number	400
Jurisdiction	SUFFOLK NY
Township / Civil Division	ISLIP
Census Block Group	1
Census Block	1013
Census Tract	147402

Owner

Source: Suffolk County and Islip 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	Individual Name on Record
Mailing Address	3 KENT PL, AMITYVILLE, NY 11701-4034
Owner Type	Individual
Vesting	Individual(s)

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 22, 2025 · Amount on Record
Deed Sale	Oct 22, 2025 · Amount on Record
Prior Sale	Mar 25, 2016 · Amount on Record
Deed Book / Page	13313 / 873
Record Updated	Sep 20, 2026

October 2025: Deed, Transfer

Document Type	Deed
Jurisdiction	SUFFOLK NY
Recording Date	Oct 22, 2025
Property Address	91 UNION AVE, ISLIP, NY 11751-3919
Document Number	0133130873
Book / Page	13313 / 873
Instrument Date	Aug 8, 2025
Transaction Type	Transfer
Record Updated	Dec 31, 2025

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3 KENT PL, AMITYVILLE, NY 11701-4034

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	New York
County	Suffolk County
County Subdivision	Islip Town
Unified School District	Islip Union Free School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$34,800 (-) Land $10,400 Building $24,400	$490,141 (-) Land $146,479 Building $343,662
2024	$11,541.00	$34,800 (-) Land $10,400 Building $24,400	$490,141 (+2.54%) Land $146,479 Building $343,662
2023		$34,800 Land $10,400 Building $24,400	$478,022 Land $142,857 Building $335,165

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 Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 40 policies
Nearby Flood Policies	40 in force
Nearby Flood Claims	19 (1980–2023)
Claims Outside the SFHA	18 of 19
Most Recent Claim	Jul 2023 · rainfall accumulation
Claims by Event	Hurricane Sandy, Oct 2012 · 2 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 98% of the US · lower than 97.9% of New York
Wildfire Likelihood	Under 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	SUFFOLK COUNTY WATER AUTHORITY serves 1,100,000 people · EPA ID NY5110526
Water Source	Groundwater
Last State Inspection	Jan 2024
Lead	1 ppb (2025–2027) action level 15 ppb

Violations Reported to EPA

Water Quality	Asbestos resolved · Jul 2020
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 357 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Verizon Fiber	2,300 / 2,300
T-Mobile Fixed Wireless	100 / 20