Google street view image for 815 Old Post Rd #17, Mamaroneck, NY 10543

Off market sep 2003 for $615K

$1,085,793

Est. refi paymentEst. refi $4,735/mo

•

3 ba

•

2,604

sq ft

815 Old Post Rd #17, Mamaroneck, NY 10543

About this home

815 Old Post Rd #17 is a 2,604 square foot multi-family home on a 6,107 square foot lot with 3 bedrooms and 3 bathrooms. - it last sold on September 02, 2003 for $615,000. Based on Redfin's Mamaroneck data, we estimate the home's value is $1,085,793.

Multi-familyProperty Type

1963Year Built

6,107 sq ftLot Size

$417Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,085,793

$471K since sold in September 2003$0 since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 40.2% lower than the average sale price ($1.82M) of 6 comparable homes.

SOLD OCT 14, 2026
$1,150,000
A
3 beds3 baths1,779 sq ft
983 Palmer Ave, Mamaroneck, NY 10543
Listing by Keller Williams Realty Group
SOLD AUG 6, 2026
$1,500,000
B
4 beds3 baths2,168 sq ft
17 N Brook Rd, Larchmont, NY 10538
Listing by Christie's Int. Real Estate
SOLD JUL 27, 2026
$1,510,000
C
3 beds3 baths2,264 sq ft
189 Lawn Ter, Mamaroneck, NY 10543
Listing by Houlihan Lawrence Inc.
SOLD AUG 27, 2026
$2,600,000
D
4 beds3.5 baths2,596 sq ft
21 Old Colony Dr, Larchmont, NY 10538
Listing by Compass Greater NY, LLC
SOLD SEP 4, 2026
$1,930,000
E
3 beds3 baths2,352 sq ft
39 Dante St, Larchmont, NY 10538
Listing by Compass Greater NY, LLC
SOLD OCT 9, 2026
$2,211,000
F
3 beds2.5 baths2,536 sq ft
33 Maple Hill Dr, Larchmont, NY 10538
Listing by Julia B Fee Sothebys Int. Rlty

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Earn from this home

Sell

$855,384

Est. take-home

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Refinance

Est. cash available

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Market trends in 10543, NY

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

106.0%

1.0% MoM

Median sale price

$1.1M

$23K MoM

Avg. days on market

22d

4 days MoM

Recently sold homes

19 MoM

New listings for sale

NEW 9 HRS AGO
$699,000
7 beds3 baths2,768 sq ft
151 Gertrude Ave, Mamaroneck, NY 10543
Listing by Compass Greater NY, LLC
$210,000
1 bed1 bath750 sq ft
220 Richbell Rd Unit B2, Mamaroneck, NY 10543
Listing by Douglas Elliman Real Estate
$525,000
2 beds1.5 baths1,100 sq ft
910 Stuart Ave Unit 4B, Mamaroneck, NY 10543
Listing by Houlihan Lawrence Inc.
See all

Provided by Redfin

Sale history for 815 Old Post Rd #17

Year

Property tax

Land + Additions

Assessment*

2026

$19,962 (+0.3%)

$395,000 + $504,000

$899,000

2025

$19,898 (+8.0%)

$395,000 + $504,000

$899,000

2024

$18,428 (+38.3%)

$395,000 + $478,000

$873,000

2023

$13,322 (+0.2%)

$395,000 + $413,000

$808,000

2022

$13,294 (−23.3%)

$395,000 + $346,000

$741,000

2021

$17,338 (+1.1%)

$395,000 + $311,000

$706,000

2020

$17,144

$395,000 + $290,000

$685,000

2019

$395,000 + $290,000

$685,000

2018

$395,000 + $290,000

$685,000

2017

$395,000 + $290,000

$685,000

2016

$358,000 + $314,000

$672,000

2014

$358,000 + $282,000

$640,000

2013

$358,000 + $282,000

$640,000

2012

$3,100 + $11,900

$15,000

2011

$3,100 + $11,900

$15,000

2010

$3,100 + $11,900

$15,000

2009

$3,100 + $11,900

$15,000

2008

$3,100 + $11,900

$15,000

Tax history for 815 Old Post Rd #17

Year

Property tax

Land + Additions

Assessment*

2026

$19,962 (+0.3%)

$395,000 + $504,000

$899,000

2025

$19,898 (+8.0%)

$395,000 + $504,000

$899,000

2024

$18,428 (+38.3%)

$395,000 + $478,000

$873,000

2023

$13,322 (+0.2%)

$395,000 + $413,000

$808,000

2022

$13,294 (−23.3%)

$395,000 + $346,000

$741,000

2021

$17,338 (+1.1%)

$395,000 + $311,000

$706,000

2020

$17,144

$395,000 + $290,000

$685,000

2019

$395,000 + $290,000

$685,000

2018

$395,000 + $290,000

$685,000

2017

$395,000 + $290,000

$685,000

2016

$358,000 + $314,000

$672,000

2014

$358,000 + $282,000

$640,000

2013

$358,000 + $282,000

$640,000

2012

$3,100 + $11,900

$15,000

2011

$3,100 + $11,900

$15,000

2010

$3,100 + $11,900

$15,000

2009

$3,100 + $11,900

$15,000

2008

$3,100 + $11,900

$15,000

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

Property details

Interior

Basement Information
Basement Sq. Ft: 1,132
Basement Type: Full

Bathroom Information
# of Full Baths: 2
# of 1/2 Baths: 2

Heating & Cooling
Heating Fuel Type: Oil
Heating Type: Hot Water Steam

Exterior

Exterior Information
Physical Condition: Average
Building Style Type: Duplex
Exterior Wall: Frame Wood

Property Information
Subdivision Name: RUSHMORE
Living Sq. Ft: 2,604
Ground Floor Sq. Ft: 1,132
Building Sq. Ft: 3,736

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

Lot Information
# of Buildings: 1
Land Sq. Ft: 6,107
Legal Block Number: 96
School Tax District: MAMARONECK
Municipality Name: MAMARONECK
Acres: 0.1402
Depth Footage: 78
Front Footage: 75
State Use Description: 2 FAMILY RESID

Utility Information
Sewer Type: Public
Water Service Type: Commercial

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,604
Stories: —
Lot Size: 6,107 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1963
Year Renovated: —
County: Westchester County
APN: 553203A009020960000

Home facts updated by county records on Jul 30, 2026

Around this home

Schools

K - 12
Preschool & daycare

Central School

Public PreK-5 • Assigned • 0.5mi

8/10

Hommocks School

Public 6-8 • Assigned • 0.6mi

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

$1.03M – $1.25M

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New listings for sale in 10543

NEW 9 HRS AGO

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151 Gertrude Ave, Mamaroneck, NY 10543

Two legal apartments • Separate entrance • 4-bedroom duplex

Listing by Compass Greater NY, LLC

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Listing by Douglas Elliman Real Estate

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Listing by Houlihan Lawrence Inc.

Home values near 815 Old Post Rd #17

Data from public records.

Address	Redfin Estimate
915 Old Post Road, Mamaroneck, NY 3 Beds \| 3 Baths \| 2400 Sq. Ft.	$1,018,347
900 Old Post Road, Mamaroneck, NY 4 Beds \| 2.5 Baths \| 2338 Sq. Ft.	$1,769,674
707 Old Post Road, Mamaroneck, NY 3 Beds \| 2 Baths \| 1832 Sq. Ft.	$1,114,490
809 Old Post Road, Mamaroneck, NY 3 Beds \| 2.5 Baths \| 3010 Sq. Ft.	$1,198,617
331 Orienta Avenue, Mamaroneck, NY 3 Beds \| 3.5 Baths \| 2934 Sq. Ft.	$1,534,762
211 Royal Place, Mamaroneck, NY 2 Beds \| 1.5 Baths \| 1460 Sq. Ft.	$782,072
209 Royal Place, Mamaroneck, NY 3 Beds \| 2 Baths \| 2268 Sq. Ft.	$1,199,472

Address	Redfin Estimate
805 Old Post Road, Mamaroneck, NY 5 Beds \| 3 Baths \| 4008 Sq. Ft.	—
909 Old Post Road, Mamaroneck, NY 4 Beds \| 2 Baths \| 1863 Sq. Ft.	$990,818
711 Old Post Road, Mamaroneck, NY 3 Beds \| 2 Baths \| 1912 Sq. Ft.	$1,293,807
914 Hall Street, Mamaroneck, NY 4 Beds \| 2 Baths \| 1525 Sq. Ft.	$877,351
205 Royal Place, Mamaroneck, NY 3 Beds \| 2.5 Baths \| 1157 Sq. Ft.	$921,008
814 Hall Street, Mamaroneck, NY 3 Beds \| 1.5 Baths \| 1734 Sq. Ft.	$1,133,716
806 Hall Street, Mamaroneck, NY - Beds \| - Baths \| 1750 Sq. Ft.	$886,253

Address	Redfin Estimate
820 Old Post Road, Mamaroneck, NY 4 Beds \| 2.5 Baths \| 2364 Sq. Ft.	$1,527,831
903 Old Post Road, Mamaroneck, NY 6 Beds \| 4 Baths \| 3751 Sq. Ft.	$1,287,884
715 Old Post Road, Mamaroneck, NY 3 Beds \| 3 Baths \| 2144 Sq. Ft.	$1,366,394
804 Hall Street, Mamaroneck, NY 3 Beds \| 2.5 Baths \| 1656 Sq. Ft.	$1,008,921
808 Hall Street, Mamaroneck, NY 4 Beds \| 3.5 Baths \| 2504 Sq. Ft.	$1,443,644
910 Hall Street, Mamaroneck, NY 4 Beds \| 2.5 Baths \| 2252 Sq. Ft.	$1,133,804
714 Hall Street, Mamaroneck, NY 4 Beds \| 4 Baths \| 2324 Sq. Ft.	—

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