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21 Carleton Avenue, East Islip, NY 11730

East Islip
Local realty services provided by:CENTURY 21 Motivated Access Realty
21 Carleton Avenue,East Islip, NY 11730
$799,000
  • 4 Beds
  • 2 Baths
  • 216 sq. ft.
  • Multi-family
  • Active
Upcoming open houses
  • Sat, Sep 26
    01:00 pm - 03:00 pm
  • Sun, Sep 27
    01:00 pm - 03:00 pm
Listed by: patricia v. rodriguez
Office: century 21 monticello realty
MLS#:1052970
Source:OneKey MLS

Price summary

  • Price:$799,000
  • Price per sq. ft.:$3,699.07

About this home

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...

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Home facts

  • Year built:1900
  • Listing ID #:1052970
  • Added:4 day(s) ago
  • Updated:September 24, 2026 at 11:07 AM

Rooms and interior

  • Bedrooms:4
  • Total bathrooms:2
  • Full bathrooms:2
  • Bedroom Description:First Floor Bedroom
  • Basement:Yes
  • Basement Description:Finished
  • Living area:216 sq. ft.

Heating and cooling

  • Cooling:Ductless
  • Heating:Hot Water

Structure and exterior

  • Year built:1900
  • Building area:216 sq. ft.
  • Lot area:0.15 Acres
  • Construction Materials:Frame

Schools

  • High school:East Islip High School
  • Middle school:East Islip Middle School
  • Elementary school:John F Kennedy Elementary School

Utilities

  • Water:Public
  • Sewer:Public Sewer

Finances and disclosures

  • Price:$799,000
  • Price per sq. ft.:$3,699.07
  • Tax amount:$12,517 (2026)

Parking

  • Total parking spaces:6
  • Parking description:Driveway
  • Garage:Yes
Copyright 2026 OneKey MLS. All rights reserved. Listings courtesy of OneKey MLS as distributed by MLS GRID <lastMLSCheckTimestamp>. OneKey MLS provides content displayed here (“provided content”) on an “as is” basis and makes no representations or warranties regarding the provided content, including, but not limited to those of non-infringement, timeliness, accuracy, or completeness. Individuals and companies using information presented are responsible for verification and validation of information they utilize and present to their customers and clients. OneKey MLS will not be liable for any damage or loss resulting from use of the provided content or the products available through Portals, IDX, VOW, and/or Syndication. Recipients of this information shall not resell, redistribute, reproduce, modify, or otherwise copy any portion thereof without the expressed written consent of OneKey MLS. LI Member Broker: Hipolito Rosario

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