65 William Ave, Central Islip, NY 11722 Property Records

Suffolk County and Islip Town property record for 65 William Ave, Central Islip, NY 11722

Property Summary

Property Type	Single Family Home
Lot Size	0.32 acres (13,939 sqft)
Owner	Individual Name on Record
Last Sale	$112,000 (Jul 1997)
Deeds & Mortgages	Feb 2023 Transfer
Flood Zone	Zone X (minimal risk)
APN	`472889 79.-1-90`

Property Details

APN / Parcel Number

Primary APN	`472889 79.-1-90`
Alternative APNs	`0500-079.00-01.00-090.000` `288907900000010900000000` `472800174160` `369241`

Exterior

Lot Area	13,939 sqft (0.32 acres)
Lot Width	122 ft Width

Location & Zoning

Account Number	369241
Street Address	65 WILLIAM AVE
City	CENTRAL ISLIP
State	NY
Zip	11722-2339
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	B
Legal Description	X2222381Y208809 T012H00000000
Legal Subdivision	MAP ISLIP ESTATES
Legal Block	9000
Legal Lot Number	100
Jurisdiction	SUFFOLK NY
Township / Civil Division	ISLIP
Census Block Group	2
Census Block	2003
Census Tract	145706

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	65 WILLIAM AVE, CENTRAL ISLIP, NY 11722-2339
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jul 16, 1997 · Amount on Record
Deed Sale	Jul 16, 1997 · Amount on Record
Deed Book / Page	11841 / 285
Last Transfer Date	Nov 2, 2021
Record Updated	Sep 20, 2026

February 2023: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SUFFOLK NY
Recording Date	Feb 17, 2023
Property Address	65 WILLIAM AVE, CENTRAL ISLIP, NY 11722-2339
Document Number	0131890890
Book / Page	13189 / 890
Instrument Date	Nov 2, 2021
Transaction Type	Transfer
Record Updated	Jan 30, 2024

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	65 WILLIAM AVE, CENTRAL ISLIP, NY 11722-2339

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	Central Islip Union Free School District (PK - 12)

Tax Bill & Assessment History

Year	Assessed Value	Assessed Market Value
2025	$32,100 (-) Land $7,500 Building $24,600
2024		$452,113 (+2.54%) Land $105,634 Building $346,479
2023	$32,100 (-) Land $7,500 Building $24,600	$440,934 (+13.74%) Land $103,022 Building $337,912
2022	$32,100 Land $7,500 Building $24,600	$387,681 Land $90,580 Building $297,101

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
Nearby Flood Policies	2 in force

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 97% of the US · lower than 96% 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 512 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