CHA Consulting, Inc. is an international engineering consulting and construction management firm headquartered in Albany, New York. The firm was founded in 1952 by John Clarkeson, P.E., in Boston, Massachusetts, and focused on civil design work. The firm was subsequently purchased by Ronald Clough and renamed Clough & Associates. Ronald Clough then partnered with Bill Harbour and the firm was renamed Clough, Harbour & Associates, LLP.