A Gilded Age duplex spanning the parlor level and second floor of a historic mansion in Boston’s Back Bay is listed for sale for $10.9 million.
Architectural firm Peabody and Stearns designed the mansion in 1884. The three-bedroom, three-bathroom unit at 305 Commonwealth Ave. is one of four residences recently renovated by Hexagon Properties, a luxury residential real estate development firm led by Sandra Edgerley.
“Magnificent Gilded Age architectural details, including hand-carved decorative…
