21 Carleton Avenue East Islip, NY 11730
Listing by: ONEKEY as distributed by MLS GRID / Listed By: Century 21 Monticello Realty - Contact:  718-804-5757

  21 Carleton Avenue East Islip, NY 11730

Pending (20 Days)
$799,000 (USD)
4
BED
2
BATH
216
SQFT

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!

MLS #:
1052970
Taxes
$12,517(2026)
Lot Size
6,534 SQFT
Type
Multifamily
Year Built
1900
School District
East Islip
County
Suffolk County

Listed By

Patricia V. Rodriguez, Century 21 Monticello Realty, Contact: 718-804-5757
Source
ONEKEY
Last checked Oct 11 2026 at 9:09 AM GMT+0000
Bathroom Details
  • Full Bathrooms: 2
Interior Features
  • First Floor Bedroom
Heating and Cooling
  • Hot Water
  • Ductless
Basement Information
  • Finished
Utility Information
  • Utilities: Electricity Connected, Natural Gas Connected, Cable Connected
  • Sewer: Public Sewer
School Information
  • Elementary School: John F Kennedy Elementary School
  • Middle School: East Islip Middle School
  • High School: East Islip High School
Parking
  • Driveway
Additional Information: Century 21 Monticello Realty | 718-804-5757
Location
   
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Estimated Monthly Mortgage Payment

*Based on Fixed Interest Rate withe a 30 year term, principal and interest only

Listing price
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Interest rate
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Mortgage calculator estimates are provided by Better Homes and Gardens Real Estate LLC and are intended for information use only. Your payments may be higher or lower and all loans are subject to credit approval.
Disclaimer: Square footage is based on information available to agent, including County records. Information has not been verified by agent and should be verified by buyer.
Based on information submitted to the MLS GRID as of 10/11/2026 09:09. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.