KlingStubbins has renewed and expanded at 1030 Mass. Ave., leasing a total of 21,388 s/f. Joe Flaherty and Tucker Hansen of Colliers Meredith & Grew represented KlingStubbins in the transaction. The landlord, Paradigm Props., was represented in-house by John Caldwell. 1030 Mass. Ave. is a four-story, 65,942 s/f Class A building located near Harvard Sq.