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651 E Boston Post Rd, Mamaroneck, NY 10543 Property Records

Westchester County and Rye Town property record for 651 E Boston Post Rd, Mamaroneck, NY 10543

Property Summary

Property TypeProfessional Building (Legal, Insurance, Real Estate, Business)
Details2,835 sqft · built 2017
Lot Size0.264 acres (11,509 sqft)
OwnerCompany Name on Record
Last Sale$3,950,000 (Nov 2021)
Tax Bill$38,696 (2026)
Deeds & MortgagesNov 2021 Sale
Jan 2019 Sale
+ 1 more
Flood ZoneZone X (minimal risk)
APN554803 154.51-1-26

Property Details

APN / Parcel Number

Primary APN554803 154.51-1-26
Alternative APNs
  • 480315405100010260000000
  • 00006833000

Interior

Stories1 Story
Building Area2,835 sqft Gross Area
Fire SprinklersFire Sprinklers

Exterior

Year BuiltBuilt 2017
Effective Year BuiltEffective 2017
Lot Area11,509 sqft (0.264 acres)
Lot Dimensions95 ft deep x 141 ft wide

Utilities, Heating & Cooling

Cooling SystemCentral
Heating FuelOil
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number00006833000
Street Address651 E BOSTON POST RD
CityMAMARONECK
StateNY
Zip10543-3742
Property CategoryCommercial
Property TypeCommercial > Office > Professional Building (Legal, Insurance, Real Estate, Business)
Local Zoning CodeC-1 COMM
Legal SubdivisionFORHAN ESTATE
Legal Block1
Legal Lot Number26.000
JurisdictionWESTCHESTER NY
Township / Civil DivisionRYE
Census Block Group1
Census Block1000
Census Tract7402

Owner

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

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

Owner of RecordCompany Name on Record
Mailing Address651 E BOSTON POST RD, MAMARONECK, NY 10543-3742
Owner TypeCompany
VestingCompany

Deeds, Mortgages & Sale History

DateDocument
Nov 8, 2021Bargain and Sale Deed, Transfer
Jan 16, 2019Grant Deed, Transfer
KENSINGTON VANGUARD NATIONAL LAND, KENSINGTON VANGUARD NAT'L LAND
Nov 14, 2017Quit Claim Deed, Transfer
BENCHMARK TITLE COMPANY

Assessor's Deed Record

Deed NamesName on Deed
Last SaleNov 8, 2021 · Amount on Record
Deed SaleNov 8, 2021 · Amount on Record
Prior SaleNov 8, 2021 · Amount on Record
Deed Document Number2021612733265
Prior Transfer DateNov 9, 2017
Prior Transfer Doc0573103109
Record UpdatedOct 29, 2026

November 2021: Bargain and Sale Deed, Transfer

Document TypeBargain and Sale Deed
JurisdictionWESTCHESTER NY
Recording DateNov 8, 2021
Property Address651 E BOSTON POST RD, MAMARONECK, NY 10543-3742
Document Number0612733265
Map ReferenceMAP 3312
Instrument DateOct 4, 2021
Instrument612733265
Transaction TypeTransfer
Record UpdatedMay 6, 2022

Transaction

AmountAmount Recorded
Tax$15,800.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name
Address275 MADISON AVE, 275, NEW YORK, NY 10016-1101

Transferred To (Grantee/Buyer)

NameVerified Name
Address235 MAMARONECK AVE, WHITE PLAINS, NY 10605-1315

January 2019: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionWESTCHESTER NY
Recording DateJan 16, 2019
Property Address651 E BOSTON POST RD, MAMARONECK, NY 10543-3742
Document Number0590023408
Book / Page059002 / 003408
Instrument DateDec 26, 2018
Transaction TypeTransfer
Record UpdatedJan 30, 2019
Title CompanyKENSINGTON VANGUARD NATIONAL LAND, KENSINGTON VANGUARD NAT'L LAND

Transaction

AmountAmount Recorded
Tax$6,160.00
Amount AccuracyConfirmed
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address275 MADISON AVE #11TH NEW YORK NY 100161101, 11TH, NEW YORK, NY 10016-1101

November 2017: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionWESTCHESTER NY
Recording DateNov 14, 2017
Property Address651 E BOSTON POST RD, MAMARONECK, NY 10543-3742
Document Number0573103109
Book / Page057310 / 003109
Instrument DateNov 9, 2017
Transaction TypeTransfer
Record UpdatedSep 27, 2018
Title CompanyBENCHMARK TITLE COMPANY

Transaction

Tax$0.00
Additional
  • Quitclaim

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address6 INNISFEE PL EASTCHESTER NY 10709, EASTCHESTER, NY 10709

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateNew York
CountyWestchester County
County SubdivisionRye Town
MunicipalityMamaroneck Village
Unified School DistrictRye Neck Union Free School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$38,696.00 (+47.38%)
2025$26,256.00$1,468,500 (-) Land $529,900 Building $938,600$1,468,500 (-) Land $529,900 Building $938,600
2024$1,468,500 (-) Land $529,900 Building $938,600$1,468,500 (-) Land $529,900 Building $938,600
2023$1,468,500 Land $529,900 Building $938,600$1,468,500 Land $529,900 Building $938,600

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

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
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on Record
median of 35 policies
Community Rating SystemClass 8 (10% premium discount)
Nearby Flood Policies35 in force
Nearby Flood Claims50 (1979–2024)
Claims Outside the SFHA10 of 50
Most Recent ClaimJan 2024 · other causes
Claims by Event
  • Hurricane Sandy, Oct 2012 · 14 claims
  • Severe Storms And Inland And Coastal Flooding, Apr 2007 · 5 claims
  • Coastal Storm, High Tides, Heavy Rain, & Flooding, Dec 1992 · 9 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

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 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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