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150 Seaport Blvd., Unit GPH — Photo 11 / 17

$44,500,000

Active

150 Seaport Blvd., Unit GPH

Boston, MA 02210

6Beds
9Baths
10,609Sq Ft
$4,195$/Sq Ft
133Days on Market

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

Listing courtesy of The Sarkis Team, Douglas Elliman Real Estate - The Sarkis Team

Location

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About This Property

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.

Property Details

Key Facts

Property Type

Condo

Style

Cottage

Living Area

10,609 sqft

Rooms

12

Bedrooms

6

Bathrooms

9 (8 full, 2 half)

Construction

Exterior

Cedar

Basement

No Basement

Flooring

Slate

Garage Spaces

4

Systems & Utilities

Heating

Hot Water Baseboard, Geothermal

Cooling

Central Air

Water

City/Town Water

Sewer

City/Town Sewer

Financial

Taxes (2025)

$420,004/yr

HOA Fee

$22,930/mo

Price / Sqft

$4,195/sqft

MLS #

73383587

Days on Market

133

Price History

Listed

Jan 28, 2026

$44,500,000

No price changes recorded.

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Listing Courtesy Of

The Sarkis Team · Douglas Elliman Real Estate - The Sarkis Team
(617) 875-4950

MLS #73383587

Listing information provided by MLS Property Information Network, Inc. (MLS PIN). Data last updated June 10, 2026. Information deemed reliable but not guaranteed. © 2026 Steinmetz Real Estate Professionals at William Raveis Real Estate. Equal Housing Opportunity.

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