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    1 home
      1 home available
      149 Union Avenue, Islip, NY 11751
      Coming soonOpen 2/28 11:00 AM-1:00 PM
      149 Union Avenue, Islip, NY 11751
      $624,900
      3beds
      1bath
      1,539sqft
      0.29acres
      House for Sale

      149 Union Avenue, Islip, NY 11751

      Listing by: Daniel Gale Sothebys Intl Rlty
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      Copyright © 2026 OneKey® MLS LLC
      Display of MLS Data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals.
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      OneKey® MLS
      149 Union Avenue, Islip, NY 11751
      149 Union Avenue, Islip, NY 11751
      Coming soon
      Open 2/28 11:00 AM-1:00 PM
      On the Market: 02/25/2026
      $624,900
      3beds
      1full,half bath
      1,539sqft
      0.29acres

      149 Union Avenue, Islip, NY 11751

      City/Town:Islip   Post Office: Islip     

      House for Sale by Colleen K. Colasacco PSADaniel Gale Sothebys Intl Rlty.

      Data checked -. Listing last updated 4 hours ago.
      1. Overview
      2. Details
      3. More 

      Professional Photos Soon! Charming Colonial in the heart of Historic Islip, south of Montauk Highway. Combining classic character with thoughtful updates, including a new roof, upgraded 200amp electric, and gorgeous full bath with soaking tub & large separate shower. Enjoy a spacious dining room with a cozy wood burning stove, bright and inviting living room, eat-in kitchen with SS appliances flowing to a den with sliders to a huge, fenced backyard-perfect for relaxing or entertaining. Don't miss this rare opportunity!

      Internet Serviceability
      Details
        Property type
      Residential
        Year built
      1900
        Heating
      Oil
        Cooling
      Wall/Window Unit(s)
        Total rooms
      8
        Garage
      No
        City/Town
      Islip
        Post Office
      Islip
        Parking spots
      -
      963652
      MLS ID
      Coming Soon
      Status
      02/25/2026
      On the Market
        Laundry features
      Inside
        Fireplace
      Yes
        Pets allowed
        Architectural Style
      Colonial
        Basement
      Bilco Door(s), Unfinished
        View
      Interior features
      First Floor Full Bath, Entrance Foyer, Formal Dining
      Exterior features
      Lot features
      Appliances included
      Dishwasher, Dryer, Electric Range, Electric Water Heater, Microwave, Refrigerator, Stainless Steel Appliance(s), Washer
      Construction materials
      Frame
      Flooring
      Wood
      Monthly taxes
      $983
      Yearly taxes
      $11,796.2
      School district
      Islip
      Schools
      Wing Elementary School, Islip Middle School, Islip High School
      Senior community
      No
      Common Charges
      -
      Maintenance
      -
      Additional Fees
      -
      Open Houses
      In-Person
      Sat, Feb 28
      11:00 AM - 01:00 PM
      Eastern Time
      Sun, Mar 01
      12:00 AM - 02:00 PM
      Eastern Time
      Virtual
      No upcoming virtual open houses
      Contact Agent
      Colleen K. Colasacco PSA
      Colleen K. Colasacco PSA
      Real Estate Salesperson, Daniel Gale Sothebys Intl Rlty
      Direct Number 
       
      Location
      Montauk Highway to Union Ave
      For Sale Nearby
      No nearby homes are For Sale Nearby.
      Recently Sold
      No nearby homes have been Recently Sold.
      149 Union Avenue, Islip, NY 11751, is a 3 bedroom, 1 bathroom, 1539 sqft. Single Family Residence built in 1900. This property is currently available for sale and was listed on OneKey® MLS on 2-25-2026. The MLS# for this Single Family Residence is MLS# 963652.
      Display of MLS Data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals.
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