21 Post Ave, Williston Park, NY 11596 Property Records

Nassau County and North Hempstead Town property record for 21 Post Ave, Williston Park, NY 11596 · Last verified June 2026

Property Summary

Property Type	Single Family Home
Details	2.5 ba · 3,392 sqft · built 1941
Lot Size	0.402 acres (17,498 sqft)
Owner	2 Individual Names on File
Last Sale	$900,000 (Dec 2011)
Tax Bill	$25,709 (2025)
Deeds & Mortgages	Oct 2025 Transfer
Flood Zone	Zone X (minimal risk)
APN	`09-225-00-0017`

Property Details

APN / Parcel Number

Primary APN	`09-225-00-0017`
Alternative APNs	`2205-09-225-00-0017-0` `09225000017000000000` `282205 9.-225-17` `09225 00170`

Interior

Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	3,392 sqft Living Area
Gross Area	3,676 sqft
1st Floor Area	962 sqft
Basement Area	284 sqft
Game Room	Game Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1941
Effective Year Built	Effective 1941
Architectural Style	Colonial
Exterior Material	Brick
Roof Material	Slate
Lot Area	17,498 sqft (0.402 acres)
Lot Dimensions	175 ft deep x 100 ft wide
Garage Type	Detached
Garage Area	528 sqft
Parking Spaces	2 Parking Spaces
Pool Area	648 sqft
Porch	Open Frame Porch
Porch Area	112 sqft

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	09225 00170
Street Address	21 POST AVE
City	WILLISTON PARK
State	NY
Zip	11596-2020
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	TOWN #2 SCH DIST 002
Legal Block	225
Legal Lot Number	17
Jurisdiction	NASSAU NY
Township / Civil Division	NORTH HEMPSTEAD
Census Block Group	1
Census Block	1010
Census Tract	303400

Owner

Source: Nassau County and North Hempstead Town records · APN 09-225-00-0017

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 Individual Names on File
Mailing Address	21 POST AVE, WILLISTON PARK, NY 11596-2020
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Individual(s)

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Dec 12, 2011 · Amount on Record
Deed Sale	Dec 12, 2011 · Amount on Record
Deed Book / Page	12784 / 30
Last Transfer Date	Oct 26, 2025
Transfer Doc	D146840210
Record Updated	Sep 20, 2026

October 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	NASSAU NY
Recording Date	Oct 30, 2025
Property Address	21 POST AVE, WILLISTON PARK, NY 11596-2020
Document Number	D146840210
Book / Page	D14684 / 210
Instrument Date	Oct 26, 2025
Instrument	2025-00070276
Transaction Type	Transfer
Record Updated	Dec 03, 2025
Title Company	FIRST AMERICAN TITLE INSURANCE AGENCY, FIRST AMER TITLE INS OF NY

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	21 POST AVE, EAST WILLISTON, NY 11596-2020

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21 POST AVE, EAST WILLISTON, NY 11596-2020

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	New York
County	Nassau County
County Subdivision	North Hempstead Town
Municipality	East Williston Village
Unified School District	East Williston Union Free School District (KG - 12)

Tax Bill & Assessment History

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.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,091 (-6.75%) Land $380 Building $711	$1,091,000 (-6.75%)
2025	$25,709.00 (+3.48%)	$1,170 (-8.59%) Land $408 Building $762	$1,170,000 (-8.59%)
2023	$24,844.00 Additional exemption filed	$1,280 Land $446 Building $834	$1,280,000

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.