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Single family home for sale at 421 Union Ave, Mount Vernon, NY 10550 | MLS# 1054921 | Listing updated on 2026-09-28
Photo 1 of Single family home for sale at 421 Union Ave, Mount Vernon, NY 10550 | MLS# 1054921 | Listing updated on 2026-09-28
Photo 2 of Single family home for sale at 421 Union Ave, Mount Vernon, NY 10550 | MLS# 1054921 | Listing updated on 2026-09-28
Photo 3 of Single family home for sale at 421 Union Ave, Mount Vernon, NY 10550 | MLS# 1054921 | Listing updated on 2026-09-28
Photo 4 of Single family home for sale at 421 Union Ave, Mount Vernon, NY 10550 | MLS# 1054921 | Listing updated on 2026-09-28
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$570,000

Monthly Est:$2,837

  • Beds Icon3 Beds
  • Beds Icon
    2 Baths
  • Beds Icon5,227sqft

421 Union Ave, Mount Vernon, NY 10550

$2,837/moEst:

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  • Single Family Residence

  • Built in 1921

  • $-- HOA

  • 5,227 sqft lot

  • $109/sq.ft

Description

Charming and full of character, this inviting home offers a wonderful blend of classic details, comfortable living spaces, and a beautifully open outdoor setting. The front exterior creates an appealing first impression with its gabled roofline, welcoming entry, mature landscaping, and a broad front window that brings natural light into the home. A large tree and neatly maintained lawn add to the established feel, while the front walkway leads to a covered entry that feels warm and approachable.

One of the standout features is the enclosed front porch or sunroom, a bright transitional space with abundant windows, rich wood flooring, a wood ceiling, and a hanging light fi
xture that enhances the home's timeless personality. This area provides a pleasant spot to enjoy morning light, set up a reading nook, or create an additional sitting space. From there, French doors open into the main living area, where natural light, tall ceilings, and dark wood floors create a comfortable atmosphere with a classic look.

The living room offers a spacious central gathering area with multiple windows, ceiling fan lighting, and an easy flow into adjacent rooms. French doors add visual interest and separation while still keeping the layout open and connected. Just beyond, the dining room is generous in length and well suited for everyday meals, larger gatherings, or a flexible combination of dining and workspace needs. Large windows brighten the room, and the continued wood flooring helps tie the main level together.

The kitchen presents a stylish contrast of dark cabinetry, light countertops, and a mosaic tile backsplash. Recessed lighting and a window above the sink add brightness, while the layout provides good cabinet storage and practical work areas. An adjoining breakfast nook or casual dining corner is surrounded by windows, creating a cheerful place for coffee, meals, or extra prep space.

The bedroom shown is filled with natural light and features wood flooring, multiple windows, and a simple, comfortable layout that feels airy and efficient. The bathroom has been updated with clean finishes, including a modern vanity, bright wall tile detail, and a window that adds natural light and ventilation.

Outside, the backyard is a major highlight. The lot opens to a large lawn framed by mature trees and established hedges, offering a peaceful backdrop and a sense of openness. A substantial paved area provides room for outdoor seating, entertaining, or other uses, while the expansive green space offers flexibility for recreation, gardening, or simply enjoying the setting. The deep yard and surrounding greenery make this outdoor area especially memorable.

Throughout the home, the combination of classic architectural touches, bright windows, wood flooring, and updated kitchen and bath spaces creates an appealing opportunity for someone looking for character and functionality in one property. This home offers inviting indoor spaces, a welcoming front presence, and an exceptional backyard that adds meaningful room to spread out and enjoy the outdoors.

  • Houzeo last checked: 6 hours ago
  • Listing updated: September 28, 2026 at 12:12 am
  • Listing Provided by: Dominique Freeman (201) 768-9300 | Prominent Properties Sotheby's (201) 768-9300
  • Source: OneKey MLS-NY | MLS#: 1054921 OneKey MLS-NY

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    -

  • County

    Westchester County

  • City

    Mount Vernon

  • Neighborhood

    --

  • Year Built

    1921

  • HOA Fees

    -

  • Finished Area

    5,227 sqft

  • Lot Size

    5,227 sqft lot

  • Basement Area

    - sqft

  • MLS Name

    OneKey MLS

  • MLS Number

    1054921

  • MLS Status

    Active

  • Days on Market

    15

  • Cumulative Days on Market

    3

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Location

Facts & Features

Rooms

  • Bedrooms & bathrooms

    Bedrooms: 3

    Bathrooms: 2

Interior

  • Heating

    Other

  • Cooling

    Ductless

  • Appliances

    Refrigerator, Oven, Range

  • Sewer

    Public Sewer

  • Interior Features

    First Floor Bedroom

Construction

  • Year Built

    Year Built: 1921

  • Home type

    Single Family Residence

  • Architectural Style

    A Frame

  • Construction Materials

    Stucco

Utilities & Energy

  • Utilities

    Electricity Available

  • Water Source

    Public

  • Basement

    Full

  • Parking Features

    On Street

Price History

DateEventPrice

09/24/2026

Source: mls_logoOneKey MLS-NY #KEY1054921

Listed for Sale

$570,000 -0.87%

$109/sqft

07/21/2026

Source: mls_logoOneKey MLS-NY #KEY998865

Listing Removed

$575,000

$110/sqft

06/16/2026

Source: mls_logoOneKey MLS-NY #KEY998865

Listed for Sale

$575,000 -10.85%

$110/sqft

06/15/2026

Source: mls_logoOneKey MLS-NY #KEY998865

Listing Removed

$645,000

$123/sqft

05/15/2026

Source: mls_logoOneKey MLS-NY #KEY998865

Listed for Sale

$645,000

$123/sqft

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Based on information from OneKey MLS, through Oct 09, 2026, 02:32PM. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. © 2026 OneKey® MLS. All rights reserved.

Advertising Broker: Derek Greene | The Greene Realty Group