21 Duffin AvenueWest Islip, NY 11795Sale Price: $645,000

  • Sale Price: $645,000
  • 930 Days Since Sale
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Federal 30-year interest rate: 6.36% last updated on May 14, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $645,000Sale Price
  • 5Bedrooms
  • 2Bathrooms

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Beautiful split level home in desirable West Islip. Featuring 5 bedrooms, 1.5 baths perfectly situated on a maintained 75x150 lot. Step into a bright and spacious living room then continue into the sunny & open eat-in kitchen with sliders leading to the backyard. The 2nd level features 3 bedrooms & a full family bathroom with a small staircase leading to the 3rd level that features the primary bedroom along with the 5th bedroom. The lower level features a den/family room as well as a half bath and a laundry room and the basement has an additional den/living space with tons of storage! Huge flat backyard with in-ground pool, perfect for entertaining! New roof & siding installed in 2019. Low taxes and just minutes from beaches the Fire Island Lighthouse!, Additional information: Appearance:Mint,Interior Features:Lr/Dr,Separate Hotwater Heater:N

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Listed by Kristin N. Lettieri of Signature Premier Properties

Listing Sold by Pinpoint Realty LI

Listings courtesy of OneKey® MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of May 16, 2026 3:20 PM EDT. 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. IDX information is provided exclusively for consumers’ personal noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. The use of the MLS GRID Data may be subject to an end user license agreement.

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