An apartment building in Boston’s Back Bay neighborhood has sold for $463,889 per unit.

The nine-unit 19 Cumberland St. sold for a total of $4.175 million. The building was purchased by Bonsai Limited LLC.

Originally constructed in 1888, the building features five studios, three one-bedroom units and one two-bedroom unit. This Victorian-style building is fully occupied and has undergone an extensive renovation program, featuring granite countertops, stainless steel, plank flooring and space-saving custom built-in furniture.

Boston Realty Advisors’ Multihousing Investment Sales team represented the seller, 19 Cumberland LLC, and Eric Shabshelowitz of Cabot & Co. represented the buyer.