Party affiliation: Democrat
Registered architect, Massachusetts Model maker, draftsman Sert Jackson and Associates, Cambridge, Massachusetts, 1971-1973. Designer, draftsman Benjamin Thompson and Associates, Cambridge, 1973-1977. Designer, draftsman, assistant Grattan Gill, Sandwich, Massachusetts, 1977-1981.
Designer, principal David R. MacLean Architect, Sandwich, since 1978. Consultant Design Guild, Boston, since 1977, Fittings, Inc., Boston, 1981. Member faculty Boston Architectural Center, 1980-1983.
Visiting critic Virginia Polytechnic Institute, Alexandria, 1982, Roger Williams College, Bristol, Rhode Island, 1983-1987. Proprietor art gallery Optigram, Falmouth, Massachusetts, 1974.