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422 East Boston Post Road, Mamaroneck, NY 10543 Property Information

422 East Boston Post Road, Mamaroneck, NY 10543 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Neighborhood
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422 East Boston Post Road, Mamaroneck, NY 10543
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Address

Primary address 422 East Boston Post Road, Mamaroneck
Zip code 10543
County Westchester
Municipality Rye
Parcel ID 154.50-1-66

Sales & Tax Overview for 422 East Boston Post Road, Mamaroneck

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Sale date 08/21/2025
Sale price $11,000,000
Arm's length
Current property tax $210,666

Lot & Building Information for 422 East Boston Post Road, Mamaroneck

Building sqft 19,059
Building class Apartments (411)
Acreage 0.55
Year built 2017
Stories 4
Water supply Comm/public
Sewer Comm/public
Story height
Air conditioning coverage 100%
Sprinkler coverage
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Zoning, Use & Area Overview

Walk Score
Transit Score
Bike Score


Zoning district
School district Rye Neck

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 422 East Boston Post Road, Mamaroneck

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  • • Improvements for 422 East Boston Post Road, Mamaroneck , including their type, square footage, grade and when they were built.
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About 422 East Boston Post Road, Mamaroneck

What is the year built & the total sq. ft. for 422 East Boston Post Road, Mamaroneck, NY 10543?

422 East Boston Post Road, Mamaroneck, NY 10543 was built in 2017 and has a total of 19,059 square feet.

What is the assessed value of 422 East Boston Post Road, Mamaroneck, NY 10543 and the property tax paid?

Assessed at $7,426,600, the tax amount paid for 422 East Boston Post Road, Mamaroneck, NY 10543 is $203,947.

When was 422 East Boston Post Road, Mamaroneck, NY 10543 last sold and what was the last sale price?

422 East Boston Post Road, Mamaroneck, NY 10543 was last sold in 08/21/2025 for $11,000,000.

How many residential units does this building have?

This building has 13 residential unit(s).

Ownership Information

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Real Estate Reports:
Eliza Theiss, Jun 23, 2026 NYC Resale Gains & Losses: Every Borough Made Money in 2025, Except Manhattan
In 2025, NYC home-sellers mostly made money. But, in Manhattan, resales came with losses — and it was apartments and recent buyers that absorbed them.
Laura Pop-Badiu, Jun 11, 2026 NYC Business Leaders on RTO: Survey Reveals Hybrid Still Dominates, Office Attendance Set to Rise
Hubble’s recent survey of 126 founders, CEOs and other decision-makers in New York City’s startup ecosystem revealed how local business leaders are approaching workplace strategy in 2026 and beyond.
Eliza Theiss, Jun 04, 2026 World Cup or Your Mortgage/Rent? Ticket Prices Rival Host City Housing Costs
World Cup ticket prices rival monthly housing expenses in the 11 U.S. host cities, with even the cheapest seats covering weeks or even months of rent or mortgage payments.
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Past Sales & Property History for 422 East Boston Post Road, Mamaroneck

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Purchase date Purchase price Buyer name Seller name
08/21/2025 $11,000,000
07/07/2015 $1,250,000
01/25/2013 $1,000,000
       
       
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*Here are the three most recent sales for this property.


Title Documents for 422 East Boston Post Road, Mamaroneck

To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.

Date Type Amount Party 1 Party 2 Doc image
12/26/2025 - R
08/21/2025 - D
Assignment
09/09/2025 - R
08/21/2025 - D
Other
(Registered agreement)
09/09/2025 - R
08/21/2025 - D
Deed
09/09/2025 - R
08/06/2025 - D
Assignment
07/11/2022 - R
06/29/2022 - D
Other
(Registered agreement)
07/11/2022 - R
06/29/2022 - D
Mortgage
07/11/2022 - R
06/28/2022 - D
Assignment
05/23/2018 - R
05/10/2018 - D
Other
(Registered agreement)
05/23/2018 - R
05/10/2018 - D
Mortgage
05/23/2018 - R
05/10/2018 - D
Assignment
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R: Recorded date
D: Document date

Property Taxes for 422 East Boston Post Road, Mamaroneck

Access detailed property tax data for 422 East Boston Post Road, Mamaroneck, NY 10543. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year 2025
Base tax $203,947
Current property tax $210,666
Market value $7,426,600
Assessed value $7,426,600

Assessment History for 422 East Boston Post Road, Mamaroneck

Here's the assessment & property tax history for 422 East Boston Post Road, Mamaroneck, including the evolution of the total tax rate and corresponding property tax.

Year Market value Assessment value Total tax rate Property tax Year over year change
2025 $7,426,600 $7,426,600 27.4617 $203,947 +82.02%
2024 $3,926,600 $3,926,600 28.5357 $112,048 -6.37%
2023 $3,926,600 $3,926,600 30.4759 $119,667 -3.37%
2022 $3,926,600 $3,926,600 31.5375 $123,835 +6.96%
2021 $3,926,600 $3,926,600 29.4862 $115,781 -15.29%

Mamaroneck residential market stats

Median Sale Price
$1,060,000
-35.1% YoY
Median Price/Sqft
$534
-14.4% YoY
Westchester County Median Sale Price
$850,000
4.9% YoY

Access a detailed real estate market overview of Mamaroneck so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Mamaroneck and compare it to other neighborhoods in Westchester County.

Demographics by Zip Code

Total population 20,989
Median age 39.8
Average household income $202,707
Family households 71.7%
Occupied housing units 7,630
Owner occupied units 58.2%
People per household (average) 2.71
Median year structure built 1954
Median value for units with a mortgage $756,700
Median value for units without a mortgage $688,400

Risk

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FEMA flood zone(s) X (See more on map)

Transportation

Access the detailed traffic volume map for 422 East Boston Post Road, Mamaroneck to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

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Neighbors for 422 East Boston Post Road, Mamaroneck

Here are the neighbors for 422 East Boston Post Road, Mamaroneck.

Address Square feet Purchase date Purchase price
317 Tompkins Ave, Mamaroneck 2,221 11/30/2016
591 E Boston Post Rd, Mamaroneck 5,250 08/24/2009 $2,258,000
311 Tompkins Ave, Mamaroneck 1,778 11/07/1995 $180,000
408 E Boston Post Rd, Mamaroneck 1,820 09/19/2013 $500,000
444 E Boston Post Rd, Mamaroneck 12,075 12/03/2013 $2,000,000
121 Dubois Ave, Mamaroneck 2,202 06/01/2023 $610,000
126 Dubois Ave, Mamaroneck 2,420
129 Dubois Ave, Mamaroneck 2,730 05/31/2013 $438,000
139 Dubois Ave, Mamaroneck 3,078 03/16/2021 $937,500
427 E Boston Post Rd, Mamaroneck 1,374
320 E Boston Post Rd, Mamaroneck 6,470
130 Dubois Ave, Mamaroneck 2,021 12/22/2025
203 S Barry Ave, Mamaroneck 3,072 07/29/2022 $1,150,000
135 Spruce St, Mamaroneck 1,178 07/30/2003 $1
132 Dubois Ave, Mamaroneck 1,362 11/29/2022 $563,000
321 Tompkins Ave, Mamaroneck 1,832 09/30/2010 $488,500
599-605 E Boston Post Rd, Mamaroneck 3,500 08/24/2009 $2,258,000
413-415 Tompkins Ave, Mamaroneck 4,011 03/16/2021 $937,500
120 Dubois Ave, Mamaroneck 2,021 02/17/1998 $285,000
118 Dubois Ave, Mamaroneck 1,604 12/09/2016 $515,000

Nearby ZIP Codes for 422 East Boston Post Road, Mamaroneck

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