Single Family
421 Union Avenue
Active · Mount Vernon · Westchester County, NY 10550
- Bedrooms
- 3 Beds
- Bathrooms
- 2 Baths
- Year built
- 1921
- Est. monthly taxes
- $859.33
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About this home
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 fixture 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.
Listing snapshot
- Days on site
- 34 days
- Listed on MLS
- Sep 24, 2026
- Full baths
- 1
- Half baths
- 1
- Annual property tax (MLS)
- $10,312
- Tax year
- 2026
- Area source (MLS)
- Public Records
- Listing brokerage
- Prominent Properties Sotheby's
- MLS ID
- KEY1054921
- Last updated
- Oct 25, 2026
General features
- Property type
- Single Family
- Property subtype
- Single Family Residence
- Year built
- 1921
- Garage
- No
- Parking
- On Street
- Water source
- Public
- Sewer
- Public Sewer
- Utilities
- Electricity Available
Interior features
- Basement
- Full
- Heating
- Other
- Cooling
- Ductless
- Interior
- First Floor Bedroom
- Appliances
- Refrigerator, Oven, Range
Exterior features
- Architectural style
- A-Frame
- Construction materials
- Stucco
- Private pool
- No
Schools (MLS)
- Elementary school
- Edward Williams
- Elementary school district
- Mount Vernon
- Middle school
- Benjamin Turner Middle School
- Middle school district
- Mount Vernon
- High school
- Mt Vernon High School
- High school district
- Mount Vernon
School information is provided by the MLS. Confirm attendance eligibility with the school district.
Recent activity
- Listing updated from MLS
- First seen on this site
- MLS status changed
Location
Estimate monthly payment
Estimated monthly principal & interest—
Monthly property taxNot provided
Monthly association / maintenance feesNot provided
Estimated monthly total of entered costs—
Listing data is supplied by the MLS and may change without notice.
