Google street view image for 903 Old Post Rd, Mamaroneck, NY 10543

Off market mar 2003 for $450K

$1,281,635

Est. refi paymentEst. refi $3,465/mo

•

4 ba

•

3,751

sq ft

903 Old Post Rd, Mamaroneck, NY 10543

About this home

903 Old Post Rd is a 3,751 square foot multi-family home on a 8,318 square foot lot with 6 bedrooms and 4 bathrooms. - it last sold on March 17, 2003 for $450,000. Based on Redfin's Mamaroneck data, we estimate the home's value is $1,281,635.

Multi-familyProperty Type

1880Year Built

8,318 sq ftLot Size

$342Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,281,635

$832K since sold in March 2003$11K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 36.8% lower than the average sale price ($2.03M) of 6 comparable homes.

SOLD JUN 1, 2026
$1,850,000
A
4 beds4 baths3,969 sq ft
194 Hickory Grove Dr E, Larchmont, NY 10538
Listing by Compass Greater NY, LLC
SOLD SEP 15, 2026
$1,650,000
B
6 beds4.5 baths2,543 sq ft
541 Claflin Ave, Mamaroneck, NY 10543
Listing by Julia B Fee Sothebys Int. Rlty
SOLD AUG 3, 2026
$2,158,000
C
4 beds3.5 baths2,823 sq ft
4 Kenmare Rd, Larchmont, NY 10538
Listing by Julia B Fee Sothebys Int. Rlty
SOLD SEP 15, 2026
$2,050,000
D
4 beds3.5 baths2,548 sq ft
49 Eton Rd, Larchmont, NY 10538
Listing by Compass Greater NY, LLC
SOLD JUL 22, 2026
$1,850,000
E
5 beds4 baths3,452 sq ft
507 Bleeker Ave, Mamaroneck, NY 10543
Listing by Compass Greater NY, LLC
SOLD AUG 27, 2026
$2,600,000
F
4 beds3.5 baths2,596 sq ft
21 Old Colony Dr, Larchmont, NY 10538
Listing by Compass Greater NY, LLC

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Earn from this home

Sell

$1,090,984

Est. take-home

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Refinance

Est. cash available

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Market trends in 10543, NY

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

107.1%

1.3% MoM

Median sale price

$1.1M

$65K MoM

Avg. days on market

18d

1 days MoM

Recently sold homes

7 MoM

New listings for sale

OPEN SAT, 12PM TO 2PM
$995,000
2 beds2 baths2,247 sq ft
124 Bradford Ave, Mamaroneck, NY 10543
Listing by Keller Williams Realty Group
OPEN SUN, 12PM TO 2PM
$385,000
2 beds1 bath950 sq ft
327 Palmer Ter Unit 2E, Mamaroneck, NY 10543
Listing by Julia B Fee Sothebys Int. Rlty
$899,000
3 beds2.5 baths1,813 sq ft
16 Top Of The Rdg Unit A13, Mamaroneck, NY 10543
Listing by Bee Home Realty
OPEN SUN, 1PM TO 3PM
$400,000
2 beds2 baths972 sq ft
1035 E Boston Post Rd Unit 2-10, Mamaroneck, NY 10543
Listing by Stetson Real Estate
$1,050,000
4 beds2 baths1,788 sq ft
214 Frank Ave, Mamaroneck, NY 10543
Listing by Compass Greater NY, LLC
$799,000
5 beds2 baths1,872 sq ft
823 Lester Ave, Mamaroneck, NY 10543
Listing by Julia B Fee Sothebys Int. Rlty
See all

Provided by Redfin

Sale history for 903 Old Post Rd

Year

Property tax

Land + Additions

Assessment*

2026

$23,083 (+0.4%)

$420,000 + $767,000

$1,187,000

2025

$22,996 (+8.5%)

$420,000 + $767,000

$1,187,000

2024

$21,189 (+36.4%)

$420,000 + $732,000

$1,152,000

2023

$15,532 (+0.5%)

$420,000 + $647,000

$1,067,000

2022

$15,458 (−22.0%)

$420,000 + $559,000

$979,000

2021

$19,809 (+1.3%)

$420,000 + $512,000

$932,000

2020

$19,561 (−3.5%)

$420,000 + $485,000

$905,000

2019

$20,278

$420,000 + $485,000

$905,000

2018

$420,000 + $485,000

$905,000

2017

$420,000 + $485,000

$905,000

2016

$368,000 + $519,000

$887,000

2014

$368,000 + $477,000

$845,000

2013

$368,000 + $477,000

$845,000

2012

$4,300 + $8,900

$13,200

2011

$4,300 + $8,900

$13,200

2010

$4,300 + $8,900

$13,200

2009

$4,300 + $8,900

$13,200

2008

$4,300 + $8,900

$13,200

Tax history for 903 Old Post Rd

Year

Property tax

Land + Additions

Assessment*

2026

$23,083 (+0.4%)

$420,000 + $767,000

$1,187,000

2025

$22,996 (+8.5%)

$420,000 + $767,000

$1,187,000

2024

$21,189 (+36.4%)

$420,000 + $732,000

$1,152,000

2023

$15,532 (+0.5%)

$420,000 + $647,000

$1,067,000

2022

$15,458 (−22.0%)

$420,000 + $559,000

$979,000

2021

$19,809 (+1.3%)

$420,000 + $512,000

$932,000

2020

$19,561 (−3.5%)

$420,000 + $485,000

$905,000

2019

$20,278

$420,000 + $485,000

$905,000

2018

$420,000 + $485,000

$905,000

2017

$420,000 + $485,000

$905,000

2016

$368,000 + $519,000

$887,000

2014

$368,000 + $477,000

$845,000

2013

$368,000 + $477,000

$845,000

2012

$4,300 + $8,900

$13,200

2011

$4,300 + $8,900

$13,200

2010

$4,300 + $8,900

$13,200

2009

$4,300 + $8,900

$13,200

2008

$4,300 + $8,900

$13,200

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Property details

Interior

Bathroom Information
# of Full Baths: 4

Heating & Cooling
Air Conditioning Type: Central
Heating Fuel Type: Oil
Heating Type: Hot Water Steam

Exterior

Exterior Information
Physical Condition: Average
Building Style Type: Colonial
Exterior Wall: Aluminum/Vinyl

Property Information
Living Sq. Ft: 3,751
Ground Floor Sq. Ft: 1,782
Building Sq. Ft: 3,751

Parking & Garage Information
Parking Type: Basement Garage
Garage / Carport Type: Basement

Lot Information
# of Buildings: 1
Land Sq. Ft: 8,318
Legal Block Number: 20
School Tax District: MAMARONECK
Municipality Name: MAMARONECK
Acres: 0.191
Depth Footage: 90
Front Footage: 92
State Use Description: 3 FAMILY RESID

Utility Information
Sewer Type: Public
Water Service Type: Commercial

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 6
Baths: 4.0
Sq. Ft.: 3,751
Stories: —
Lot Size: 8,318 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1880
Year Renovated: —
County: Westchester County
APN: 553203A009020200000

Home facts updated by county records on Sep 25, 2026

Around this home

Schools

Central School

Public PreK-5 • Assigned • 0.4mi

8/10

Hommocks School

Public 6-8 • Assigned • 0.5mi

9/10

Mamaroneck High School

Public 9-12 • Assigned • 0.2mi

8/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

6/10 Heat Factor

7 days above 98° expected this year, 16 days in 30 years

6/10 Wind Factor

27% chance of strong winds in next 30 years

4/10 Air Factor

7 unhealthy days expected this year, 7 days in 30 years

Provided by First Street

Historical weather

Mamaroneck, NY • 10543

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 8.7 hours in June and 4.4 hours in December, placing it below the U.S. average for solar exposure.

8.7 hrs

4.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.22M – $1.47M

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New listings for sale in 10543

OPEN SAT, 12PM TO 2PM

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124 Bradford Ave, Mamaroneck, NY 10543

Listing by Keller Williams Realty Group

OPEN SUN, 12PM TO 2PM

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1035 E Boston Post Rd Unit 2-10, Mamaroneck, NY 10543

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214 Frank Ave, Mamaroneck, NY 10543

Listing by Compass Greater NY, LLC

$799,000

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Home values near 903 Old Post Rd

Data from public records.

Address	Redfin Estimate
922 Old Post Road, Mamaroneck, NY 5 Beds \| 4 Baths \| 3250 Sq. Ft.	$1,649,451
805 Old Post Road, Mamaroneck, NY 5 Beds \| 3 Baths \| 4008 Sq. Ft.	—

Address	Redfin Estimate
915 Old Post Road, Mamaroneck, NY 3 Beds \| 3 Baths \| 2400 Sq. Ft.	$1,020,646
820 Old Post Road, Mamaroneck, NY 4 Beds \| 2.5 Baths \| 2364 Sq. Ft.	$1,546,072

Address	Redfin Estimate
921 Old Post Road, Mamaroneck, NY 3 Beds \| 1.5 Baths \| 1732 Sq. Ft.	$889,279
925 Old Post Road, Mamaroneck, NY 3 Beds \| 2 Baths \| 2089 Sq. Ft.	$1,330,508

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