21 Carleton Avenue, East Islip, NY

$799,000

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4

Beds

2

Baths

216

Square feet

0.15

Acres

About 21 Carleton Avenue

Welcome to East Islip, NY 11730, a beautifully upgraded two-family residence offering generous living space, modern comfort, and an exceptionally convenient location. This well-maintained property is an excellent opportunity for an owner-occupant, investor, or buyer seeking flexible living arrangements with the benefit of two separate units. The spacious first-floor unit features three comfortable bedrooms and a bright, inviting layout designed for everyday living and entertaining. The second-floor unit offers one bedroom with its own private living space, making it ideal for rental income, guests, or additional household needs. The home has been fully upgraded, allowing the next owner to move in and enjoy its many improvements. For added comfort and efficiency, the property is equipped with two separate boilers and five energy-efficient split HVAC units, providing flexible heating and cooling throughout the home. A large private driveway can accommodate up to six vehicles, a valuable feature for a two-family property. Conveniently located approximately 10 minutes from the Long Island Rail Road, this home provides an easy commute to New York City and surrounding Long Island communities. It is also close to major roadways, shopping malls, supermarkets, restaurants, local stores, schools, parks, and other everyday necessities. With its upgraded condition, separate living spaces, modern heating and cooling systems, generous parking, and convenient East Islip location, offers an outstanding combination of comfort, convenience, and income-producing potential. Don’t miss the opportunity to own this versatile two-family home in one of Long Island’s desirable communities. Schedule your private showing today!

Features of 21 Carleton Avenue

MLS® # 1052970
Price $799,000
Bedrooms 4
Bathrooms 2.00
Full Baths 2
Internal Footage 216
Square Footage 6534
Acres 0.15
Year Built 1900
Type Residential Income
Sub-Type Duplex
Status Pending

Community Information

Address 21 Carleton Avenue
City East Islip
County Suffolk County
State NY
Zip Code 11730

Amenities

Utilities Cable Connected, Electricity Connected, Natural Gas Connected
Parking Spaces 6
Parking Driveway
Is Waterfront No
Has Pool No

Interior

Interior Features First Floor Bedroom
Heating Hot Water
Cooling Ductless
Fireplace No
Has Basement Yes
Basement Finished

Exterior

Construction Frame

School Information

District East Islip
Elementary John F Kennedy Elementary School
Middle East Islip Middle School
High East Islip High School

Additional Information

Date Listed September 18th, 2026
Days on Market 20
Short Sale No
RE / Bank Owned No

Listing Details

Listing Provided Courtesy ofCentury 21 Monticello Realty
Contact Info718-804-5757

Listing Map

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