40 Union Ave, Islip, NY 11751 Property Records

Suffolk County and Islip Town property record for 40 Union Ave, Islip, NY 11751

Property Summary

Property Type	Single Family Home
Details	1,545 sqft · built 1925
Lot Size	0.13 acres (5,663 sqft)
Owner	Individual Name on File
Last Sale	$459,000 (Aug 2017)
Deeds & Mortgages	Aug 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`472889 370.-4-18`

Property Details

APN / Parcel Number

Primary APN	`472889 370.-4-18`
Alternative APNs	`0500-370.00-04.00-018.000` `288937000000040180000000` `472800766620` `034600`

Interior

Building Area	1,545 sqft Living Area
1st Floor Area	795 sqft

Exterior

Year Built	Built 1925
Effective Year Built	Effective 1925
Lot Area	5,663 sqft (0.13 acres)
Lot Width	73 ft Width

Location & Zoning

Account Number	034600
Street Address	40 UNION AVE
City	ISLIP
State	NY
Zip	11751-3912
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	B
Legal Description	X2217813Y183995 T059H00000000H
Legal Block	0004
Legal Lot Number	400
Jurisdiction	SUFFOLK NY
Township / Civil Division	ISLIP
Census Block Group	3
Census Block	3000
Census Tract	147402

Owner

40 Union Ave is owned and occupied by an individual who bought it in August 2017.

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

Owner of Record	Individual Name on File
Mailing Address	40 UNION AVE, ISLIP, NY 11751-3912
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 15, 2017 · Amount on File
Deed Sale	Aug 15, 2017 · Amount on File
Prior Sale	Mar 15, 1999 · Amount on File
Deed Book / Page	12925 / 263
Record Updated	Oct 29, 2026

August 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SUFFOLK NY
Recording Date	Aug 15, 2017
Property Address	40 UNION AVE, ISLIP, NY 11751-3912
Document Number	0129250263
Book / Page	012925 / 000263
Instrument Date	Jul 10, 2017
Transaction Type	Transfer
Record Updated	Aug 25, 2018
Title Company	ALL STATE ABSTRACT CORPORATION, ALL STATE ABSTRACT CORP.

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,836.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	8 KNOT CT BAY SHORE NY 117064719, BAY SHORE, NY 11706-4719

Mortgage

Document Number	228440364
Date	Aug 15, 2017
Book Page	022844/000364

Lender

Name	BANK OF AMERICA
Type	Bank
Address	CHARLOTTE, NC 28255

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Aug 14, 2047

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	Assessed Value	Assessed Market Value
2025	$34,000 Land $7,200 Building $26,800
2024		$478,873 (+2.54%) Land $101,408 Building $377,465
2023	$34,000 Land $7,200 Building $26,800	$467,033 Land $98,901 Building $368,132

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

FEMA maps place 40 Union Ave in Zone X, an area of minimal flood risk, though there have been 75 flood claims nearby since 1978.

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 File median of 53 policies
Nearby Flood Policies	53 in force
Nearby Flood Claims	75 (1978–2021)
Claims Outside the SFHA	44 of 75
Most Recent Claim	Sep 2021 · Remnants Of Hurricane Ida
Claims by Event	Hurricane Sandy, Oct 2012 · 27 claims Coastal Storm, High Tides, Heavy Rain, & Flooding, Dec 1992 · 4 claims Hurricane Gloria, Sep 1985 · 5 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

The area around 40 Union Ave has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within 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 421 locations within half a mile, as of December 31, 2025

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