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150 Seaport Boulevard, Unit GPH, Seaport DistrictBoston, MA 02210Price: $44,500,000

  • Price: $44,500,000
  • Est. Mortgage of $/month
  • 365 Days on Market
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$
%
$/month over payments
Federal 30-year interest rate: 6.53% last updated on May 28, 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.
  • $44,500,000List Price
  • 6Bedrooms
  • 10Bathrooms
  • 10,609Square Feet

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St. Regis

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Experience a new echelon of luxury living at The Grand Penthouse, the crown jewel of the St. Regis Residences. Encompassing over 10,000 sq ft across 2 dramatic levels, this one-of-a-kind home sits atop Boston's iconic Seaport, offering panoramic views of Boston Harbor and the city skyline through soaring floor-to-ceiling windows. Designed with extraordinary attention to detail, the residence features a double-height great room, a sculptural curved floating staircase with glass railings, and a grand foyer with an Italian marble radial inlay floor. Every element is curated for refined living and entertaining at scale. The outdoor living experience is equally extraordinary, including a custom infinity-edge pool with a clear acrylic bottom, and a retractable Libart International glass roof, and sweeping water views from every angle. Blending the privacy of a custom home with the legendary service of the St. Regis brand, The Grand Penthouse is a truly rare offering Boston has never seen.

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Listed by The Sarkis Team of Douglas Elliman Real Estate - The Sarkis Team

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