129 Union Ave, Islip, NY 11751 Property Records

Suffolk County and Islip Town property record for 129 Union Ave, Islip, NY 11751

Property Summary

Property Type	Single Family Home
Lot Size	0.24 acres (10,454 sqft)
Owner	Individual Name on File
Last Sale	$410,000 (Jun 2005)
Flood Zone	Zone X (minimal risk)
APN	`472889 396.-5-5`

Property Details

APN / Parcel Number

Primary APN	`472889 396.-5-5`
Alternative APNs	`0500-396.00-05.00-005.000` `288939600000050050000000` `472800829990` `032745`

Exterior

Lot Area	10,454 sqft (0.24 acres)
Lot Width	166 ft Width

Location & Zoning

Account Number	032745
Street Address	129 UNION AVE
City	ISLIP
State	NY
Zip	11751-4314
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	B
Legal Description	X2218281Y182883 T059H00000000
Legal Block	6000
Legal Lot Number	500
Jurisdiction	SUFFOLK NY
Township / Civil Division	ISLIP
Census Block Group	1
Census Block	1014
Census Tract	147402

Owner

Source: Suffolk County and Islip Town assessment roll, as of April 30, 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 File
Mailing Address	129 UNION AVE, ISLIP, NY 11751-4314
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Jun 8, 2005 · Amount on Record
Deed Sale	Jun 8, 2005 · Amount on Record
Prior Sale	Apr 14, 2003 · Amount on Record
Deed Book / Page	12391 / 401
Record Updated	Jun 8, 2026

Tax Assessment & Valuation

Source: Suffolk County and Islip Town assessment roll, as of April 30, 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	Assessed Value	Assessed Market Value
2025	$45,500 (-) Land $10,100 Building $35,400
2024		$640,846 (+2.54%) Land $142,254 Building $498,592
2023	$45,500 Land $10,100 Building $35,400	$625,000 Land $138,736 Building $486,264

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

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 Communications Fiber · Cable	8,000 / 8,000
Verizon Fiber	2,300 / 2,300
T-Mobile USA Fixed Wireless	100 / 20