It is not exactly a tree growing in Brooklyn, but Baltimore can now claim its first mass timber office building on Boston St. The aptly named 40Ten Boston, for its location at 4010 Boston St., stands out for being the city’s first office building built largely from heavy lumber, rather than steel or concrete, earning it an Impact Award as judged by real estate professionals familiar with the market. The unique building material required the team at 28 Walker Development to work closely with local building code and fire officials to familiarize city officials with the construction process and its safety attributes. …”The innovation with the mass timber construction is not only beautiful aesthetically but more importantly it champions environmental sustainability through the project,” wrote Lacey Johansson, assistant vice president for leasing at St. John Properties.