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274 Beacon Street PH

  • Boston, MA
  • $9,875,000

Perched atop one of Back Bay's most iconic addresses, this extraordinary ~6,000 SF penthouse duplex redefines luxury living with grand entertaining spaces, intimate retreats, and breathtaking panoramic views. A private elevator opens into a stunning formal foyer, setting the stage for the dramatic living room, where soaring ceilings, intricate moldings, a fireplace, and floor-to-ceiling windows frame sweeping vistas of the Charles River and Cambridge skyline. A richly paneled study with a fireplace and wet bar adds warmth and sophistication, while the elegant dining room offers a front-row seat to dazzling city views, seamlessly connecting to a spacious eat-in kitchen. The upper level boasts 6+ bedrooms, 6 full baths, a laundry room, and abundant storage, ensuring ultimate comfort and privacy. This professionally managed, owner-occupied concierge co-op includes private storage, 1 dedicated parking space, and an additional guest spot as available. A true 1 of a kind Back Bay residence!
Perched atop one of Back Bay's most iconic addresses, this extraordinary ~6,000 SF penthouse duplex redefines luxury living with grand entertaining spaces, intimate retreats, and breathtaking panoramic views. A private elevator opens into a stunning formal foyer, setting the stage for the dramatic living room, where soaring ceilings, intricate moldings, a fireplace, and floor-to-ceiling windows frame sweeping vistas of the Charles River and Cambridge skyline. A richly paneled study with a fireplace and wet bar adds warmth and sophistication, while the elegant dining room offers a front-row seat to dazzling city views, seamlessly connecting to a spacious eat-in kitchen. The upper level boasts 6+ bedrooms, 6 full baths, a laundry room, and abundant storage, ensuring ultimate comfort and privacy. This professionally managed, owner-occupied concierge co-op includes private storage, 1 dedicated parking space, and an additional guest spot as available. A true 1 of a kind Back Bay residence!
Perched atop one of Back Bay's most iconic addresses, this extraordinary ~6,000 SF penthouse duplex redefines luxury living with grand entertaining spaces, intimate retreats, and breathtaking panoramic views. A private elevator opens into a stunning formal foyer, setting the stage for the dramatic living room, where soaring ceilings, intricate moldings, a fireplace, and floor-to-ceiling windows frame sweeping vistas of the Charles River and Cambridge skyline. A richly paneled study with a fireplace and wet bar adds warmth and sophistication, while the elegant dining room offers a front-row seat to dazzling city views, seamlessly connecting to a spacious eat-in kitchen. The upper level boasts 6+ bedrooms, 6 full baths, a laundry room, and abundant storage, ensuring ultimate comfort and privacy. This professionally managed, owner-occupied concierge co-op includes private storage, 1 dedicated parking space, and an additional guest spot as available. A true 1 of a kind Back Bay residence!
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1929

1929

Year Built

6

6

Total Bedrooms

7

7

Total Bathrooms

6,000

6,000

Sq.Ft.

Living Space

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01

Interior

Total Bedrooms

6

Total Bathrooms

7

Full Bathrooms

6

Half Bathroom

1
01

Exterior & Building

Stories

2

Water Source

Public

Parking

Off Street

Heat Type

Central

Air Conditioning

Central Air

Sewer

Public Sewer

HOA Amenities

Hot Water, Elevator(s)
01

Lot & Area

Status

Inactive

Living Area

6,000 Sq.Ft.

Total Area

6,000 Sq.Ft.

MLS® ID

73356431

Type

Co-Op

Year Built

1929

Neighborhood

Boston
01

Finance

Sales Price

$9,875,000

HOA Fees

$13,575/mo

Zoning

RES

Floor Plans

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Maggie Gold Seelig

Maggie Gold Seelig

Get to Know Me

A New York City native and lawyer by training, Maggie founded MGS Group Real Estate after working at Coldwell Banker. Widely recognized in the industry as a “top broker” for those seeking to buy or sell high-end properties, Maggie knows that being nimble and truly able to think ‘out of the box’ is critical to achieving her clients’ objectives. With her finger on the pulse of the market, Maggie is singularly focused on negotiating deal terms that exceed client expectations. Indeed, Maggie provides more than clear and sound real estate advice — she offers strategic thinking that enables her clients to realize every advantage.
 
Over her career, Maggie has advised and brokered some of the largest, record-breaking, and most complicated real estate transactions in her core markets in Boston, Greater Boston, the Cape & Islands, Manhattan and Miami. She is often celebrated as a Top Real Estate Producer in the luxury residential real estate brokerage communities she serves and has been recognized for being a Top Real Estate Broker by the Wall Street Journal. Maggie is also a member of the New York Metro Chapter of YPO.
 
Maggie resides in Cambridge, MA, and the Upper East Side of Manhattan. She has served on several philanthropic Boards and Committees over the past 20 years, including currently serving on the Board of Advisors of Harvard’s American Repertory Theatre and the Board of Philanthropic Overseers of Boston Children’s Hospital.

Accolades

  • #2 Individual Agent in Boston 2024 - WSJ
  • #2 Individual Agent in Massachusetts 2024 - WSJ
  • #18 Individual Agent in the Nation 2024 – WSJ
  • Record Sales in: Brookline, Boston, Cambridge, Newton, Weston
  • RealTrend's The Thousand, Wall Street Journal Top 50 Agents in the Nation 2019-2024
  • Top Producer, Boston Magazine 2019-2025
  • Boston Magazine 150 Most Influential Bostonians 2023, 2024, 2025
  • Hollywood Reporter NYC Power Broker, 2024
  • Founding Member, The Private List
  • Luxe List, Boston Common

Charity/Community Involvement

  • Central Park Conservancy
  • Wheelock Family Theatre
  • American Repertory Theatre (ART)
  • Red Sox Foundation
  • PANDAS Network
  • Milton Academy
  • JCC Greater Boston
  • Land's Sake Farm
  • Frances Jacobson Early Childhood Center
  • Big Sister Boston
  • David Ortiz Children's Fund
  • Emerald Necklace Conservancy
  • Steppingstone Foundation
  • Boston Children’s Hospital

Education

  • Swarthmore College, BA
  • University of Connecticut School of Law, JD.

Interests

  • Theatre
  • Music
  • Dancing
  • Baseball
  • Spending time with my family and friends doing just about anything!

MGS Group Real Estate

MGS Group Real Estate is a boutique residential real estate firm representing discerning Buyers and Sellers in the Greater Boston area. We limit the number of clients we work with at any given time to ensure they have an experience that goes far beyond the traditional broker relationship. The result is a concierge level experience that leaves our clients better heard, better understood and better served.

We are uniquely positioned to play match-maker between buyers and sellers of exceptional properties in the Boston area, often before they come to market.

We welcome inquiries about our on market offerings as well as our many off market private “whisper listings”.

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