HAVERHILL, MASS. — CBRE has arranged the $77 million sale of Hamel Mill Lofts, a 305-unit apartment community in Haverhill, a northern suburb of Boston. The historic site originally housed the L.H. Hamel Leather Co. complex and was converted to residential use in 2010. The property comprises four apartment buildings with one- and two-bedroom units that have an average size of 846 square feet. Amenities include a clubhouse, gym and a movie theater. Simon Butler, Biria St. John and John McLaughlin of CBRE represented the undisclosed seller in the transaction. The trio also procured the buyer, an affiliate of Boston-based DSF Group.