• 21 Carleton Avenue , East Islip, NY 11730 Main Photo
New to the Market
MLS#1052970
STATUSActive PROPERTY TYPEMulti Unit - Multiple SCHOOLEast Islip

Property Description

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!

21 Carleton Avenue | MLS# 1052970

This multi-family property located at 21 Carleton Avenue , East Islip, NY 11730 is currently listed for sale with an asking price of $799,000. Carleton Avenue is located within the East Islip school district. Search East Islip real estate on www.laffey.com today.

Upcoming Open Houses

Open House Saturday September 26th, 1:00pm - 3:00pm
Open House Sunday September 27th, 1:00pm - 3:00pm

Property Features

Property Type: Multi Unit - Multiple
Basement: Yes
Basement: Finished
Cooling: Ductless
Heating: Hot Water
Lot Size: 0.15 Acres
Taxes: $12,517
Year Built: 1900

Amenities

First Floor Bedroom

Feature Descriptions

Building Area Total: 216
Exterior: Frame
GarageY/N: Yes
Heating Units: 1
Heating Zones: 2
On Market Date: 2026-09-19
Parcel Number: 0500-372-00-02-00-039-000
Parking Features: Driveway
Parking Total: 6
Rental Term: Monthly
Separate Gas Meters: 2
Sewer: Public Sewer
Units: 2
Utilities: Cable Connected, Electricity Connected, Natural Gas Connected
Water: Public

Local Schools

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

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Estimated Payment

$ 3,054.35 per month $1,778.23 Principal & Interest $1,043.08 Property Tax $233.04 Homeowner's Insurance

Change Payment Information

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Listed By / Shown By

Listing By

Agency Name: Century 21 Monticello Realty
Agency Contact: 718-804-5757

Shown By

Agency Title: Laffey Real Estate
Agency Phone: 1-888-289-6902

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers 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 on this site was last updated 09/20/2026. The listing information on this page last changed on 09/20/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Sun 09/20/2026 12:03:11 AM EST) or OneKey MLS (last updated Sun 09/20/2026 12:00:22 AM EST). Real estate listings held by brokerage firms other than Laffey Real Estate may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.

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