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1 home
1 home available
423 Union Avenue, Mamaroneck, NY 10543
Down Payment Help
PendingPrice Reduced $20,000

$975,000
5beds
2bath
–sqft
0.2acres
Residential Income

423 Union Avenue, Mamaroneck, NY 10543
Listing by: Houlihan Lawrence Inc.
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400 Broadhollow Road, Suite 5, Farmingdale, NY 11735
Copyright © 2025 OneKey® MLS LLC
Display of MLS Data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals.






























































$975,000
5beds
2full,–half bath
0.2acres
423 Union Avenue, Mamaroneck, NY 10543

NYWestchester CountyMamaroneck10543423 Union Avenue, Mamaroneck, NY 10543
NY/Westchester County/Mamaroneck/10543/423 Union Avenue, Mamaroneck, NY 10543423 Union Avenue, Mamaroneck, NY 10543
Pending
Price Reduced $20,000
$975,000 $20,000
Down Payment Help

5beds
2full,–half bath
–sqft
0.2acres
423 Union Avenue, Mamaroneck, NY 10543
City/Town:Mamaroneck Post Office: Mamaroneck
Residential Income by Emma Pasqualini, Houlihan Lawrence Inc..
Data checked -. Listing last updated 33 days ago.
- Overview
- Details
- Open Houses
- More
This charming, fully renovated Colonial duplex is just one block from convenient transportation. The first unit features two bedrooms with hardwood floors, a modern kitchen, and a cozy enclosed sunroom. The second unit boasts three bedrooms plus three additional bonus rooms in the finished attic. Both units have separate entrances for added privacy. The property also includes a finished basement with a private entrance leading to the driveway, a generously sized flat yard, and ample parking with a long driveway and two garages. Taxes do not reflect any exemptions. Additional Information: ParkingFeatures:2 Car Attached,
Details
Property type
Residential Income
Year built
1910
Heating
Natural Gas, Hot Water
Cooling
Wall/Window Unit(s)
Total rooms
Garage
No
City/Town
Mamaroneck
Post Office
Mamaroneck
Parking spots
2
H6327321
MLS ID
Pending
Status
09/11/2024
On Market Date
Laundry features
–
Flooring
–
Fireplace
No
Pets allowed
Architectural Style
Colonial
View
–
Interior features
Master Downstairs, First Floor Bedroom, Pantry, Walk-In Closet(s)
Exterior features
–
Lot features
Near Public Transit, Near School, Near Shops, Cul-De-Sac, Views, Level
Appliances included
–
Construction materials
Frame, Aluminum Siding
Monthly taxes
$1,793
Yearly taxes
$21,512
Community Features
-
School district
Rye Neck
Schools
F E Bellows Elementary School, Rye Neck Middle School, Rye Neck Senior High School
Senior community
No
Common Charges
-
Maintenance
-
Additional Fees
-
Open Houses
In-Person
No upcoming in-person open houses
VirtualNo upcoming virtual open houses
Contact Agent
Listing By:







Emma Pasqualini
Carmen J. Wilantowicz
Building Info
Schools
Elementary Schools
Greenport Elementary School
720 Front St, Greenport, NY 11944
School Rating
D+
Grades
PK-6
Students
318
Teachers
27.6
Student to Teacher Ratio
12:1
Advanced Placement
No
Magnet School
No
Charter School
No
School district
Middle Schools
Greenport High School
720 Front St, Greenport, NY 11944
School Rating
C+
Grades
7-12
Students
335
Teachers
34.1
Student to Teacher Ratio
10:1
Advanced Placement
Yes
Magnet School
No
Charter School
No
School district
High Schools
Greenport High School
720 Front St, Greenport, NY 11944
School Rating
C+
Grades
7-12
Students
335
Teachers
34.1
Student to Teacher Ratio
10:1
Advanced Placement
Yes
Magnet School
No
Charter School
No
School district
Demographics for 10543
Population
6,008
Median age
46.6
Avg. household size
2.3
Avg. household income
$150,966
Households with children
47.9%
Households without children
52.1%
Employment
Unemployment Rate
5.8%
Blue Collar
37.0%
White Collar
57.3%
Education
Less than 9th grade
6.6%
Some high school
3.9%
High school graduate
20.2%
Some college
19.3%
Associate's degree
8.0%
Bachelor's degree
25.0%
Graduate degree
16.9%
Location
GPS
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Listing by: Daniel Gale Sothebys Intl Rlty
423 Union Avenue, Mamaroneck, NY 10543, is a 5 bedroom, 2 bathroom Duplex built in 1910.
This property is currently available for sale and was listed on OneKey® MLS on 9-11-2024.
The MLS# for this Duplex is MLS# H6327321.
Display of MLS Data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals.
Copyright ©2025