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.
Listed by George Sarkis
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Douglas Elliman Real Estate - The Sarkis Team
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781-603-8702
Listed by Manuel Sarkis
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Douglas Elliman Real Estate - The Sarkis Team
Listed by The Sarkis Team
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Douglas Elliman Real Estate - The Sarkis Team
Last updated September 05, 2025
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Source: MLSPin #73383587
Listing Facts
TypeCondo
NeighborhoodSeaport District
Bedrooms6
Bathrooms10
Days on Prevu96
HOA/Maint. Fees$22,930/month
Taxes$420,004/year
Size10,609 sqft
Price per sqft$4,666
Amenities
Dishwasher
Private Outdoor Space
Washer/Dryer
Pets Allowed
Air Conditioning
Elevator
Parking
Swimming Pool
Fitness Center
Location
Mortgage Calculator
Listing History
06/02/2025
Listed by Douglas Elliman Real Estate - The Sarkis Team
$49,500,000
Property Details for 150 Seaport Blvd. GPH
Association
Amenities
Association Amenities: Hot Water, Pool, Elevator(s), Fitness Center, Sauna/Steam, Clubroom, Parking, Clubhouse
Community Features: Public Transportation, Shopping, Pool, Park, Highway Access, Marina, Public School, T-Station
Waterfront Features: Waterfront, Ocean, Harbor, Dock/Mooring, Deep Water Access, Marina, Public, Private, 1 To 2 Mile To Beach, Beach Ownership(Public)
Interior Features: Sauna/Steam/Hot Tub, Wet Bar, Wired For Sound, Elevator
Spa Features: Hot Tub/Spa
Spa: Yes
Measurements
Living Area: 10,609
Living Area Source: Measured
Rooms
Basement: N
Bathrooms Full: 8
Bathrooms Half: 2
Bathrooms Total Integer: 10
Bedrooms Total: 6
Rooms Total: 12
Other
Features
Accessibility Features: Accessible Entrance
Parking
Parking
Attached Garage: Yes
Covered Spaces: 4
Garage Spaces: 4
Garage: Yes
Parking Features: Attached
Utilities
Equipment
Cooling: Central Air
Has Cooling: Yes
Heating: Forced Air, Fan Coil
Has Heating: Yes
Laundry Features: In Unit
Sewer: Public Sewer
Utilities: For Gas Range
Water Source: Public
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