Lawrence G. Dunbar was born Chicago, Illinois on November 24, 1953 and was admitted to the Texas bar in 1989. He graduated from the University of Notre Dame with a B.S. in Civil Engineering in 1975, from the Illinois Institute of Technology with a M.S. in Environmental Engineering in 1981, and from the University of Houston with a J.D. in 1988.

He became a Registered Professional Engineer in Texas in 1983. Mr. Dunbar is a member of State Bar of Texas; American Bar Association and practices in the areas of Water Law, Drainage Law, and General Civil Practice.