20 Harrison Ave, Hempstead, NY 11550 Property Records

Nassau County and Hempstead Town property record for 20 Harrison Ave, Hempstead, NY 11550

Property Summary

Property TypeDuplex
Details2 ba · 2,125 sqft · built 1961
Lot Size0.099 acres (4,300 sqft)
OwnerCompany Name on File
Tax Bill$5,857 (2025)
Flood ZoneZone X (minimal risk)
APN35-640-00-0111

Property Details

APN / Parcel Number

Primary APN35-640-00-0111
Alternative APNs
  • 2013-35-640-00-0111-0
  • 35640000111000000000
  • 282013 35.-640-111
  • 35640 01110

Interior

Full Baths2 Baths
Total Rooms10 Rooms
Units2 Units
Stories2 Stories
Building Area2,125 sqft Living Area
Gross Area2,150 sqft
1st Floor Area1,050 sqft
Basement Area25 sqft

Exterior

Year BuiltBuilt 1961
Effective Year BuiltEffective 1961
Architectural StyleMulti-Family
Exterior MaterialWood
Construction TypeFrame
Roof MaterialOther
Lot Area4,300 sqft (0.099 acres)
Lot Dimensions100 ft deep x 43 ft wide
PorchOpen Frame Porch

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral
Heating FuelOil
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number35640 01110
Street Address20 HARRISON AVE
CityHEMPSTEAD
StateNY
Zip11550-5402
Property CategoryResidential
Property TypeResidential > Multi-Unit > Duplex
Legal DescriptionTOWN #1 SCH DIST 001
Legal Block640
Legal Lot Number111
JurisdictionNASSAU NY
Township / Civil DivisionHEMPSTEAD
Census Block Group1
Census Block1007
Census Tract406701

Owner

20 Harrison Ave, a duplex, is owned by a company and is owner-occupied.

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

Owner of RecordCompany Name on File
Mailing Address20 HARRISON AVE, HEMPSTEAD, NY 11550-5402
OccupancyOwner Occupied
Owner TypeCompany

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 NamesName on Deed
Record UpdatedSep 20, 2026

Tax Assessment & Valuation

The 2025 property tax bill for 20 Harrison Ave was $5,857 with exemptions applied.

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

Property Jurisdictions

TypeName
StateNew York
CountyNassau County
County SubdivisionHempstead Town
MunicipalityHempstead Village
Unified School DistrictHempstead Union Free School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$349 Land $110 Building $239$349,000
2025$5,857.00
2023$5,492.00 Homeowner's exemption Senior Citizen's exemption$363 Land $114 Building $249$363,000

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

Flood

FEMA maps place 20 Harrison Ave in Zone X, an area of minimal flood risk.

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

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

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

Wildfire

Wildfire risk around 20 Harrison Ave is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire RiskLow
lower than 99.1% of the US · lower than 99.2% of New York
Wildfire LikelihoodUnder 0.01% annual chance
ExposureNone
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 SystemHEMPSTEAD (V)
serves 56,000 people · EPA ID NY2902827
Water SourceGroundwater
Last State InspectionNov 2025
LeadUnder 1 ppb (2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and Reporting1
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 385 locations within half a mile, as of December 31, 2025

ProviderMax 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

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