12 William Penn DriveStony Brook, NY 11790Price: $769,000

  • Price: $769,000
  • Est. Mortgage of $/month
  • 5 Days on Market
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$
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Federal 30-year interest rate: 6.66% last updated on Jul 30, 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.
  • $769,000List Price
  • 3Bedrooms
  • 3Bathrooms
  • 0.43Acreage
  • 1,711Square Feet

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Beautifully maintained and move-in ready, this 3-bedroom, 2.5-bath home is nestled on a peaceful 0.43-acre property in the heart of Stony Brook, north of 25A. Designed for both everyday living and entertaining, the home features an inviting open floor plan with vaulted ceilings, hardwood floors throughout (including beneath the bedroom carpeting), abundant storage, and a spacious primary suite with an ensuite bath and organized walk-in closets. The thoughtfully designed kitchen offers radiant heated floors, a skylight, granite countertops, custom cabinetry, and a new LG stainless steel refrigerator. Recent updates include central air (2024), roof, siding, and gutters (2018), a new washing machine, and a new refrigerator. Additional highlights include an in-ground sprinkler system 8-zone, generator transfer switch, retractable electric awning, and exceptional storage throughout. Private backyard featuring a spacious deck, bluestone patio, and an in-ground pool with a waterfall and newer liner-perfect for summer entertaining or relaxing at home. Pull-down attic storage, 2 car garage, extended Belgian block-lined driveway with ample parking. Located in the highly regarded Three Village School District (Setauket Elementary, Gelinas Middle School, and Ward Melville High School), this home is just minutes from Stony Brook University, Stony Brook Village, West Meadow Beach, the Port Jefferson Ferry, parks, shopping, restaurants, and major commuter routes. Experience the perfect combination of comfort, convenience, and North Shore living.

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Listed by Beth Hayde of Real Broker NY LLC (516-972-0051)

Listings courtesy of OneKey® MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of August 3, 2026 12:26 AM UTC. 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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