55 Carleton Avenue • East Islip, NY 11730

$1,800,000 • Beds: 0 • Baths: • Sq. Feet: 0 • MLS ID: 928396
55 Carleton Avenue presents a rare chance to acquire a high-visibility, 0.98-acre commercial property on Carleton Avenue-the main thoroughfare into East Islip. Zoned GSD, this site is ideally suited for office, medical, or veterinary use, offering exceptional exposure and accessibility. This unique opportunity allows for expansion of additional space of up to 11,000 sq. ft. or redevelop the entire site for your new building up to 17,000 ft. sq. Only two miles from the Federal Court House and 2.5 miles from Northwell South Shore University Hospital with easy access from Sunrise Hwy and Southern State Parkway. The East Islip area boasts strong commercial activity and highly desirable demographics, making this a prime location for professional services seeking long-term growth and visibility. View this listing at: http://www.laffey.com/lid=182411196

Property Features

  • Taxes: $29,360
  • Basement: Yes
  • Exterior: Brick,Fiberglass Insulation,Stucco
  • Lot Size: 0.98 Acres
  • Heating: Forced Air,Natural Gas
  • Cooling: Central Air,Ductwork
  • Year Built: 1975
  • Water: Public
  • Sewer: Public Sewer
  • Stories: 1.0
  • Units: 8
  • On Market Date: 2025-10-24
  • Appliances: None
  • Basement: Bilco Door(s),Unfinished
  • Building Area Total: 6100
  • Building Features: Bathrooms,Lobby,Signage Included
  • Business Type: Commercial,Medical,Professional/Office
  • Common Walls: 2+ Common Walls
  • Fencing: Chain Link
  • Flooring: Combination
  • Parcel Number: 0500-346-00-03-00-073-000
  • Parking Total: 18
  • Rental Term: Monthly
  • Road Responsibility: Public Maintained Road
  • Utilities: Cable Available,Cable Connected,Electricity Connected,Natural Gas Connected,Phone Connected,Sewer Connected,Trash Collection Private,Water Connected
Printed April 11, 2026

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