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About this home
Experience elevated waterfront living in this stunning 3 bedroom, 3 bath penthouse at the prestigious Seal Harbor III. This exceptional two-level residence features a spacious open-concept floor plan designed to maximize natural light and showcase its spectacular waterfront setting. Entertain effortlessly or simply relax on the massive private deck, offering the perfect space to enjoy ocean breezes and breathtaking views. The kitchen boasts SS appliances, granite counters, Poggenpohl cabinetry and a breakfast bar. Enjoy the beautiful views while cooking. This 2 level unit offers the flexibility of a first floor bedroom and/or office. Nice open staircase. Lovely primary bedroom with en suite. There is a separate jacuzzi room which could become a home office if one chooses to do so. Seal Harbor III offers an unmatched lifestyle with exceptional amenities, including 24/7 concierge, a beautiful fireplaced lobby, an indoor heated pool and hot tub, a recently renovated fitness center, sauna, rooftop deck with panoramic views, outdoor swimming pool, tennis courts and multiple private resident gathering spaces. Additional highlights include a rare heated two-car garage, G9 and G11. Ideally located in the seaside community of Winthrop, you'll enjoy the tranquility of waterfront living while being just minutes from Logan Airport and downtown Boston, providing the perfect balance of coastal charm and city convenience. LUXURY, LOCATION, AND LIFESTYLE come together in this extraordinary waterfront Penthouse.
Highlights
Property details
- MLS #
- 73560746
- Property type
- Condominium
- Subdivision
- N/A
- Status
- Active
- Days on market
- 50
- On market date
- August 6, 2026
- Stories
- 2
- Total bathrooms
- 3
- Garage spaces
- 2
- Parking spaces
- 2
- Lot size
- N/A
Location
Get directions →Nearby schools
Within 10 miles · public school directory data (NCES)
- Enrollment
- 481
- Student:teacher ratio
- 12.7:1
- District
- Winthrop
- Enrollment
- 423
- Student:teacher ratio
- 11.1:1
- District
- Winthrop
- Enrollment
- 564
- Student:teacher ratio
- 13.4:1
- District
- Winthrop
Walkability
Blended score for Winthrop's center: EPA's National Walkability Index (street network, transit, land-use mix) combined with nearby-amenity density. 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).
Market position
How this listing compares to current activity in Winthrop, from live MLS data.
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Data source: Listing information provided by MLS Property Information Network via Trestle/CoreLogic. Last updated August 11, 2026.
Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.




