17 William Ave, Glen Head, NY 11545 Property Records

Nassau County and Oyster Bay Town property record for 17 William Ave, Glen Head, NY 11545 · Last verified June 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bathrooms	2 Baths
Year Built	Built 1954
Square Footage	2,327 sqft Living Area
Lot Size	9,800 sqft (0.225 acres)
Garage	Attached, 440 sqft
Pool	518 sqft
Occupancy	Owner Occupied
Tax Bill	$15,276.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`21-227-00-0006`
Alternative APNs	`2489-21-227-00-0006-0` `21227000006000000000` `282489 21.-227-6` `21227 00060`

Interior

Full Baths	2 Baths
Total Rooms	6 Rooms
Building Area	2,327 sqft Living Area
Gross Area	3,116 sqft Gross Area
1st Floor	1,246 sqft 1st Floor
Basement Area	349 sqft Basement
Stories	1 Stories
Fireplace	Fireplace
Fireplaces	1 Fireplaces

Exterior

Year Built	Built 1954
Effective Year Built	Effective 1954
Architectural Style	Cape Cod Style
Exterior Material	Wood Exterior
Construction Type	Frame Construction
Roof Material	Other (not Classified) Roof
Lot Area	9,800 sqft (0.225 acres)
Depth X Width	134 ft x 90 ft Depth x Width
Parking Spaces	2 Parking Spaces
Garage Type	Attached Garage
Garage Area	440 sqft Garage

Exterior Amenities

Pool Area	518 sqft Pool
Deck Area	192 sqft Deck
Patio Area	967 sqft Patio
Porch Area	25 sqft Porch

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Central Heating
Heating Fuel	Oil Heating Fuel
Sewage	Municipal Sewage
Water Source	Commercial Water Source

Location & Zoning

Account Number	21227 00060
Street Address	17 WILLIAM AVE
City	GLEN HEAD
State	NY
Zip	11545-1427
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	TOWN #3 SCH DIST 001
Legal Block	227
Legal Lot Number	6
Jurisdiction	NASSAU NY
Minor Civil Division	OYSTER BAY
Census Blockgroup	4
Census Block	4000
Census Tract	517600

Owner

Source: Nassau County and Oyster Bay Town records · APN 21-227-00-0006

Assessment roll updated June 17, 2026 · Last verified June 2026

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

Owner of Record	2 Company Names on File
Mailing Address	17 WILLIAM AVE, GLEN HEAD, NY 11545-1427
Occupancy	Owner Occupied
Owner Type	Owner is a Company
Vesting	Owner is a Trust, Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Transfer Date	Oct 15, 2025
Transfer Doc	D146920799
Record Refreshed	Sep 20, 2026

November 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	NASSAU NY
Recording Date	Nov 21, 2025
Property Address	17 WILLIAM AVE, GLEN HEAD, NY 11545-1427
Document Number	D146920799
Book / Page	D14692 / 799
Map Reference	MAP 5431
Instrument Date	Oct 15, 2025
Instrument	2025-76003
Transaction Type	Transfer
Record Updated	Dec 15, 2025

Transaction

Tax	$0.00
Amount Accuracy	Zero or No Consideration Stated
Additional	Interfamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	17 WILLIAM AVE, GLEN HEAD, NY 11545-1427

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	17 WILLIAM AVE, GLEN HEAD, NY 11545-1427

Tax Assessment & Valuation

Source: Nassau County and Oyster Bay Town records · Assessment roll updated June 17, 2026 · Last verified June 2026

Property Jurisdictions

Type	Name
State	New York
County	Nassau County
County Subdivision	Oyster Bay Town
Unified School District	North Shore Central School District (KG - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$727 (+2.83%) Land $266 Building $461	$727,000 (+2.83%)
2025	$15,276.00 (+9.39%) Senior Citizen's exemption Veteran's exemption	$707 (-4.07%) Land $259 Building $448	$707,000 (-4.07%)
2023	$13,965.00 Homeowner's exemption Disabled Person's exemption Veteran's exemption	$737 Land $270 Building $467	$737,000

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Nassau County (36059C), updated April 5, 2023 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.