HAVERHILL, MASS. — Yannios RE Investment Sales has brokered the sale of Highland Maple Apartments, a 39-unit apartment community in Haverhill. Haverhill is located 35 miles north of Boston. Built in 1850, the masonry-style property includes two, three-story buildings. Yannios RE Investment Sales represented the seller, who was undisclosed. The buyer was also undisclosed.