623 Concord Ave, Williston Park, NY 11596 Property Records

Nassau County and North Hempstead Town property record for 623 Concord Ave, Williston Park, NY 11596

Property Summary

Property Type	Single Family Home
Details	2 ba · 1,944 sqft · built 1934
Lot Size	0.138 acres (6,000 sqft)
Owner	2 Individual Names on File
Last Sale	$885,000 (Dec 2020)
Tax Bill	$13,498 (2025)
Deeds & Mortgages	Dec 2020 Sale
Flood Zone	Zone X (minimal risk)
APN	`09-135-00-0019`

Property Details

APN / Parcel Number

Primary APN	`09-135-00-0019`
Alternative APNs	`2257-09-135-00-0019-0` `09135000019000000000` `282257 9.-135-19` `09135 00190`

Interior

Full Baths	2 Baths
Half Baths	2 Half Baths
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,944 sqft Living Area
1st Floor Area	972 sqft
Game Room	Game Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1934
Effective Year Built	Effective 1934
Architectural Style	Colonial
Exterior Material	Brick/Stone
Construction Type	Frame
Foundation Type	Concrete
Roof Material	Other
Lot Area	6,000 sqft (0.138 acres)
Lot Dimensions	100 ft deep x 60 ft wide
Garage Type	Detached
Garage Area	324 sqft
Parking Spaces	1 Parking Space
Porch	Open Frame Porch
Porch Area	36 sqft
Patio Area	154 sqft

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	09135 00190
Street Address	623 CONCORD AVE
City	WILLISTON PARK
State	NY
Zip	11596-1532
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	TOWN #2 SCH DIST 009
Legal Block	135
Legal Lot Number	19-21
Jurisdiction	NASSAU NY
Township / Civil Division	NORTH HEMPSTEAD
Census Block Group	2
Census Block	2022
Census Tract	303301

Owner

623 Concord Ave is owned and occupied by two individuals who bought it in December 2020.

Source: Nassau County and North Hempstead Town records, as of June 17, 2026

Owner of Record	2 Individual Names on File
Mailing Address	623 CONCORD AVE, WILLISTON PARK, NY 11596-1532
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	2 Names on Deed
Last Sale	Dec 10, 2020 · Amount on File
Deed Sale	Dec 10, 2020 · Amount on File
Deed Document Number	2020120406
Deed Book / Page	14011 / 591
Record Updated	Oct 29, 2026

December 2020: Bargain and Sale Deed, Transfer

Document Type	Bargain and Sale Deed
Jurisdiction	NASSAU NY
Recording Date	Dec 10, 2020
Property Address	623 CONCORD AVE, WILLISTON PARK, NY 11596-1532
Document Number	0140110591
Book / Page	14011 / 591
Map Reference	MAP 975
Instrument Date	Nov 23, 2020
Instrument	2020-120406
Transaction Type	Transfer
Record Updated	May 14, 2021
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount on Record
Tax	$3,540.00
Amount Accuracy	Rounded by County
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	53 210TH ST, BAYSIDE, NY 11364

Tax Assessment & Valuation

The 2025 property tax bill for 623 Concord Ave was $13,498 with a homeowner's exemption.

Source: Nassau County and North Hempstead Town assessment roll, as of June 17, 2026

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$695 Land $318 Building $377	$695,000
2025	$13,498.00
2023	$14,060.00 Additional exemption filed	$814 Land $384 Building $430	$814,000

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 623 Concord Ave in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective April 5, 2023

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

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

Wildfire

The area around 623 Concord 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	WILLISTON PARK (V) serves 7,287 people · EPA ID NY2902858
Water Source	Groundwater
Last State Inspection	Sep 2024
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
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 1,039 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