Shelagh Brennan

Shelagh Brennan is consistently ranked among Boston’s Top 20 real estate agents and is widely recognized as one of the city’s leading experts in luxury and investment properties. From 2019 through 2023, she was the #1 agent for multi-family sales in Boston’s Back Bay, based on MLS Property Information Network, Inc. sales [...]

Shelagh Brennan is consistently ranked among Boston’s Top 20 real estate agents and is widely recognized as one of the city’s leading experts in luxury and investment properties. From 2019 through 2023, she was the #1 agent for multi-family sales in Boston’s Back Bay, based on MLS Property Information Network, Inc. sales volume.

Shelagh represented the seller in the off-market, record-setting sale of 56 Beacon Street in Beacon Hill for $28,250,000—the highest-priced single-family home ever sold in Boston—and also represented the buyer in the second most expensive recorded single-family home sale in Cambridge at 46 Fayerweather Street for $16,000,000. She has been named one of “America’s Best Real Estate Agents” by RealTrends and The Wall Street Journal, and her sales have been featured in The Boston Globe, Boston Business Journal, and The New England Real Estate Journal for some of the region’s most significant transactions.

With over 30 years of experience in the Boston real estate market, Shelagh brings a deep understanding of market cycles, financial strategy, and complex transactions. She is highly skilled at negotiating intricate deals and is known for identifying opportunities others overlook, as well as sourcing off-market properties for her clients. Her encyclopedic knowledge of Back Bay, Beacon Hill, the South End, and Cambridge provides unmatched insight and strategic guidance. She advises a sophisticated clientele—including private buyers and sellers, developers, financial institutions, non-profit organizations, and international investors—and has served as an expert witness in Suffolk County Probate Court. Her love of architecture, art, history, and design translates into magazine-quality marketing materials and frequent requests for consultation on staging and presentation.

A graduate of Boston College, Shelagh also completed the Condominium Development Program at the Harvard Graduate School of Design. Beyond her professional work, she is actively involved in the community, supporting organizations such as Friends of Dana-Farber, Habitat for Humanity Boston, Big Brothers Big Sisters of Boston, the French Cultural Center, and the International School of Boston.

Known for her keen instincts, perseverance, discretion, and unwavering fiduciary commitment, Shelagh Brennan delivers exceptional results for clients navigating Boston’s most exclusive properties.