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172 E Prospect Ave, Mamaroneck, NY 10543 Property Records

Westchester County and Mamaroneck Town property record for 172 E Prospect Ave, Mamaroneck, NY 10543

Property Summary

Property TypeApartments (5+ Units)
Details22,580 sqft · built 2023
Lot Size0.21 acres (9,148 sqft)
OwnerCompany Name on File
Last Sale$995,000 (Jun 2017)
Tax Bill$89,489 (2026)
Deeds & MortgagesJun 2017 Sale
May 2017 Transfer
Flood ZoneZone X (minimal risk)
APN553203 9-6-117

Property Details

APN / Parcel Number

Primary APN553203 9-6-117
Alternative APNs
  • 320300900601170000000000
  • 625800

Interior

Stories5 Stories
Building Area22,580 sqft Gross Area
ElevatorElevator

Exterior

Year BuiltBuilt 2023
Effective Year BuiltEffective 2023
Lot Area9,148 sqft (0.21 acres)
Lot Dimensions53 ft deep x 183 ft wide
PorchSlab

Utilities, Heating & Cooling

Cooling SystemCentral
Heating FuelOil
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number625800
Street Address172 E PROSPECT AVE
CityMAMARONECK
StateNY
Zip10543-3709
Property CategoryResidential
Property TypeResidential > Multi-Unit > Apartments (5+ Units)
Local Zoning CodeC2
Legal SubdivisionNORTHERLY PORTION
Legal Block117
JurisdictionWESTCHESTER NY
Township / Civil DivisionMAMARONECK
Census Block Group1
Census Block1005
Census Tract7200

Owner

172 E Prospect Ave, a residential property, is owned by a company that bought it in June 2017.

Source: Westchester County and Mamaroneck Town records, as of October 21, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of RecordCompany Name on File
Mailing Address109 SPENCER PL, MAMARONECK, NY 10543-2627
Owner TypeCompany
VestingCompany

Deeds, Mortgages & Sale History

DateDocument
Jun 27, 2017Grant Deed, Transfer
JUDICIAL TITLE INSURANCE AGENCY INC, THE JUDICIAL TITLE INSURANCE AGENCY
May 12, 2017Quit Claim Deed, Transfer
CORNERSTONE ABSTRACT, CORNERSTONE LAND ABSTRACT

Assessor's Deed Record

Deed NamesName on Deed
Last SaleJun 27, 2017 · Amount on File
Deed SaleJun 27, 2017 · Amount on File
Deed Document Number2017571723406
Record UpdatedOct 29, 2026

June 2017: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionWESTCHESTER NY
Recording DateJun 27, 2017
Property Address172 E PROSPECT AVE, MAMARONECK, NY 10543-3709
Document Number0571723406
Book / Page057172 / 003406
Instrument DateJun 21, 2017
Transaction TypeTransfer
Record UpdatedJul 7, 2017
Title CompanyJUDICIAL TITLE INSURANCE AGENCY INC, THE JUDICIAL TITLE INSURANCE AGENCY

Transaction

AmountAmount on Record
Tax$3,980.00
Amount AccuracyConfirmed
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address109 SPENCER PL MAMARONECK NY 105432627, MAMARONECK, NY 10543-2627

May 2017: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionWESTCHESTER NY
Recording DateMay 12, 2017
Property Address172 E PROSPECT AVE, MAMARONECK, NY 10543-3709
Document Number0570603329
Book / Page057060 / 003329
Instrument DateApr 1, 2017
Transaction TypeTransfer
Record UpdatedMar 6, 2019
Title CompanyCORNERSTONE ABSTRACT, CORNERSTONE LAND ABSTRACT

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address172 E PROSPECT AVE MAMARONECK NY 105433709, MAMARONECK, NY 10543-3709

Tax Assessment & Valuation

The 2026 property tax bill for 172 E Prospect Ave was $89,489, up 43.5% from the year before.

Source: Westchester County and Mamaroneck Town assessment roll, as of May 14, 2026

Property Jurisdictions

TypeName
StateNew York
CountyWestchester County
County SubdivisionMamaroneck Town
MunicipalityMamaroneck Village
Unified School DistrictMamaroneck Union Free School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$89,489.00 (+43.48%)
2025$62,371.00$4,470,000 (+16.86%) Land $540,000 Building $3,930,000$4,470,000 (+16.86%) Land $540,000 Building $3,930,000
2024$3,825,000 (+68.13%) Land $540,000 Building $3,285,000$3,825,000 (+68.13%) Land $540,000 Building $3,285,000
2023$2,275,000 Land $540,000 Building $1,735,000$2,275,000 Land $540,000 Building $1,735,000

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

Flood

FEMA maps place 172 E Prospect Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Nearest Special Flood Hazard AreaZone AE, within 500 ft
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 8 (10% premium discount)
Nearby Flood Policies123 units insured
incl. 114 condo units
Nearby Flood Claims16 (1979–2023)
Claims Outside the SFHA2 of 16
Most Recent ClaimSep 2023 · Severe Storm And Flooding
Claims by Event
  • Remnants Of Hurricane Ida, Sep 2021 · 4 claims
  • Hurricane Irene, Aug 2011 · 2 claims
  • Severe Storms And Inland And Coastal Flooding, Apr 2007 · 2 claims

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

The area around 172 E Prospect 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 RiskNot 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 SystemWESTCHESTER JOINT WATER WORKS
serves 59,629 people · EPA ID NY5903435
Water SourceSurface water
Last State InspectionMar 2025
Lead3 ppb (2026–2028)
action level 15 ppb

Violations Reported to EPA

Water QualityFailure to filter
currently in violation since Jun 1993
Haloacetic acids
resolved · Jul 2019
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 334 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		980 / 880
T-Mobile
Fixed Wireless		100 / 20

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