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.

More Info

Basic Information

  • Bedrooms6
  • Mls StatusActive
  • Bathroom10
  • Parcel Number 5233770
  • Unit NumberGPH

Location

  • NeighborhoodSeaport District
  • SubdivisionSeaport District
  • Address150 Seaport Boulevard
  • Building Number150
  • CountySuffolk
  • StateMA
  • StreetSeaport Boulevard
  • TownBoston
  • Zip02210

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Heat SystemYes
  • Heating Forced Air, Fan Coil
  • Sewer Public Sewer
  • Water Source Public

Amenities

  • Accessibility Features Accessible Entrance
  • Amenities
    • Highway Access
    • Marina
    • Park
    • Pool
    • Public School
    • Public Transportation
    • Shopping
    • T-Station
  • Appliances IncludedRange, Oven, Dishwasher, Disposal, Microwave, Refrigerator, Freezer, Washer, Dryer, Wine Refrigerator
  • Association Amenities
    • Clubhouse
    • Clubroom
    • Elevator(s)
    • Fitness Center
    • Hot Water
    • Parking
    • Pool
    • Sauna/Steam
  • Other AmenitiesFireplace, Waterfront, Water View
  • PetsYes w/ Restrictions
  • Pool Features Association, Indoor
  • Security Features Intercom, Doorman, Concierge, Security System

Tax Information

  • Tax Assessed Value $35,911,700
  • Tax Year 2025
  • Taxes$420,004

Rooms

  • Bathrooms Total Decimal 9
  • Full Bath8
  • Half Baths2

Building

  • Attached Garage YN Yes
  • BasementN
  • Building Area Units Square Feet
  • Common Walls No One Above
  • Construction Materials Stone
  • Entry Level 21
  • FireplaceYes
  • Fireplaces Total 1
  • Garage Spaces4
  • Patio And Porch Features Deck - Roof, Deck - Roof + Access Rights, Covered
  • Property NameSt. Regis
  • Rooms12
  • Stories2
  • Utilities For Gas Range
  • Year Built2022
  • Year Built Details Actual, Renovated Since
  • Year Built Source Owner

Water Body

  • Miles to Beach2
  • WaterfrontYes
  • Waterfront Features Waterfront, Ocean, Harbor, Dock/Mooring, Deep Water Access, Marina, Public, Private,1 to 2 Mile To Beach, Beach Ownership(Public)

Parking

  • Parking Spaces4
  • Covered Spaces 4
  • Garage YN Yes
  • Parking Features Attached

Basic Information

  • List Price$44,500,000
  • MLS Number73383587
  • Modification Date02/24/2026
  • Property SubTypeCondominium

Interior

  • Flooring Marble
  • Interior Features Sauna/Steam/Hot Tub, Wet Bar, Wired for Sound, Elevator

Exterior

  • Exterior Features
    • City View(s)
    • Covered Patio/Deck
    • Deck - Roof
    • Deck - Roof + Access Rights
    • Decorative Lighting
    • Hot Tub/Spa

Property Information

  • Square Feet10,609
  • Building Area Source Measured
  • Living Area 10,609
  • Lot Size Units Acres
  • Property Attached YN Yes
  • Spa YN Yes
  • Structure Type High-Rise
  • View YN Yes

Other

  • Association Fee $22,930
  • Association Fee Frequency Monthly
  • Association Fee Includes
    • Gas
    • Insurance
    • Maintenance Structure
    • Reserve Funds
    • Security
    • Sewer
    • Trash
    • Water
  • Date Listed06/02/2025
  • Farm Land Area Units Square Feet
  • Spa Features Hot Tub/Spa
  • View Count15

Map Location

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

The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. (MLSPIN) from third party sources, including sellers, lessors and public records, and were compiled by MLSPIN. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLSPIN and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

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