Westchester County  »  10543  »  E Boston Post Rd  »  422 E Boston Post Rd

422 East Boston Post Road, Mamaroneck, NY 10543 - Property report

Also known as: 422 E Boston Post Rd

Property image for 422 East Boston Post Road, Mamaroneck, NY 10543
static Mapbox map

Property type

Apartments (411)

Year built

2017

Acreage

0.55

Sale price

$11,000,000

General information

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Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
422 East Boston Post Road
ZIP code
10543
County
Westchester
SWIS code
Village of Mamaroneck
Parcel ID
154.50-1-66

Owner

Find out who owns 422 East Boston Post Road, Mamaroneck, NY 10543. Uncover corporate and individual owners with a free account.

Sales
Sale date
08/21/2025
Sale price
$11,000,000
Arm's length
Tax
Tax year
2025
Current property tax
$210,666
Zoning & Use
Zoning
Office sq. ft.
Retail sq. ft.
Industrial sq. ft.
Building
Property type
Apartments (411)
Building sq. ft.
19,059
Buildings on lot
1
Stories
4
Story height
Year built
2017
AC coverage
Elevator
Units
13
Lot
Total sq. ft.
19,059
Acreage
0.55
Water
Comm/public
Sewer
Comm/public
Garage sq. ft.
Parking sq. ft.
Sprinkler coverage

Area overview

Walk score
95 /100.  Walker's Paradise
Transit score
50 /100.  Good Transit
Bike score
55 /100.  Bikeable
School district
554801

View more such as transportation, nearby schools and risk designations.

Ownership

Ownership information for 422 East Boston Post Road, Mamaroneck, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 422 East Boston Post Road, Mamaroneck, NY 10543

Sale date Sale price Buyer name Seller name
08/21/2025 $11,000,000 XXXXXXXXXX XXXXXXXXXX XXX XXX XXXXXX XXXXX XXX
07/07/2015 $1,250,000 XXX XXXXX XXXXXXXX XX XX XXX XXXXXX XXXX XXX
01/25/2013 $1,000,000 XXX XXXXXX XXXX XXX XXXXX/XX XXXXXX

*Most recent sales on record for this property.

More about Westchester County property records.

Title documents

Date Type Amount Party 1 Party 2
12/26/2025 - R
08/21/2025 - D		 Assignment XXXXXXXX XXXX XXX XXXXXXX XXX
09/09/2025 - R
08/21/2025 - D		 Other
(Registered agreement)		 XXXXXXXXXX XXXXXXXXXX XXX XXX XXXXXXX XXX
09/09/2025 - R
08/21/2025 - D		 Deed XXX XXXXXX XXXXX XXX XXXXXXXXXX XXXXXXXXXX XXX
09/09/2025 - R
08/06/2025 - D		 Assignment XXXXXXXX XXXX XXX XXXXXXX XXX
07/11/2022 - R
06/29/2022 - D		 Other
(Registered agreement)		 XXX XXXXXX XXXXX XXX XXXXXXXX XXXX
07/11/2022 - R
06/29/2022 - D		 Mortgage XXX XXXXXX XXXXX XXX XXXXXXXX XXXX
07/11/2022 - R
06/28/2022 - D		 Assignment XXXXXXXXX XXXX XXXXXXXX XXXX
05/23/2018 - R
05/10/2018 - D		 Other
(Registered agreement)		 XXX XXXXXX XXXXX XXX XXXXXXXXX XXXX
05/23/2018 - R
05/10/2018 - D		 Mortgage XXX XXXXXX XXXXX XXX XXXXXXXXX XXXX
05/23/2018 - R
05/10/2018 - D		 Assignment XXXXXX XXXXXXX XXXX XXXXXXXXX XXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 422 East Boston Post Road, Mamaroneck, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2025
Current property tax
$210,666
Base tax
$203,947
Recent tax assessments
Market value
$7,426,600
Land value
$992,000
Building value
$6,434,600
Assessed value
$7,426,600

More about Westchester County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Tax rate Property tax Y-o-Y 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%
2020 $4,138,400 $4,138,400 33.02866 $136,686 +19.86%
2019 $3,380,400 $3,380,400 33.735841 $114,041 +6.22%
2018 $3,317,800 $3,317,800 32.3589 $107,360 +144.68%
2017 $1,342,800 $1,342,800 32.676872 $43,879 +38.28%
2016 $925,600 $925,600 34.28103 $31,731 +16.63%
Permits

Permit information for 422 East Boston Post Road, Mamaroneck, NY

No recently recorded permits for this property.

Neighborhood

Mamaroneck residential market stats

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.

Median sale price

$1,060,000

-35.1% Y-o-Y

Median price/sq. ft.

$534

-14.4% Y-o-Y

Westchester county median sale price

$850,000

4.9% Y-o-Y

Demographics by ZIP code

Total population
20,989
Median age
39.8
Average household income
$202,707
Family households
71.7%
People per household (average)
2.71
Occupied housing units
7,630
Owner-occupied units
58.2%
Median year structure built
1954
Median value mortgaged units
$756,700
Median value unmortgaged units
$688,400

Risk

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FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 422 East Boston Post Road, Mamaroneck, NY 10543 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Neighbors for 422 East Boston Post Road, Mamaroneck, NY

317 Tompkins Ave, Mamaroneck 591 E Boston Post Rd, Mamaroneck 311 Tompkins Ave, Mamaroneck 408 E Boston Post Rd, Mamaroneck 444 E Boston Post Rd, Mamaroneck 121 Dubois Ave, Mamaroneck 126 Dubois Ave, Mamaroneck 129 Dubois Ave, Mamaroneck 139 Dubois Ave, Mamaroneck 427 E Boston Post Rd, Mamaroneck 320 E Boston Post Rd, Mamaroneck 130 Dubois Ave, Mamaroneck 203 S Barry Ave, Mamaroneck 135 Spruce St, Mamaroneck 132 Dubois Ave, Mamaroneck 321 Tompkins Ave, Mamaroneck 599-605 E Boston Post Rd, Mamaroneck 413-415 Tompkins Ave, Mamaroneck 120 Dubois Ave, Mamaroneck 118 Dubois Ave, Mamaroneck

Nearby ZIP codes for 422 East Boston Post Road, Mamaroneck, NY

10528, Westchester County, NY 10530, Westchester County, NY 10538, Westchester County, NY 10552, Westchester County, NY 10553, Westchester County, NY 10573, Westchester County, NY 10577, Westchester County, NY 10580, Westchester County, NY 10583, Westchester County, NY 10601, Westchester County, NY 10604, Westchester County, NY 10605, Westchester County, NY 10606, Westchester County, NY 10707, Westchester County, NY 10708, Westchester County, NY 10709, Westchester County, NY 10801, Westchester County, NY 10803, Westchester County, NY 10804, Westchester County, NY 10805, Westchester County, NY

Frequently asked questions

What is the year built for 422 East Boston Post Road, Mamaroneck, NY 10543?

The development at 422 East Boston Post Road, Mamaroneck, NY 10543 was built in 2017.

What is the total square footage of 422 East Boston Post Road, Mamaroneck, NY 10543?

422 East Boston Post Road, Mamaroneck, NY 10543 has a total of 19,059 square feet.

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

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

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

422 East Boston Post Road, Mamaroneck, NY 10543 is currently assessed at $7,426,600.

What are the property taxes for 422 East Boston Post Road, Mamaroneck, NY 10543?

The property taxes for 422 East Boston Post Road, Mamaroneck, NY 10543 total $203,947.

How many residential units does this building have?

This building has 13 residential unit(s).

Disclaimer

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