Philip S. Clayton, retired director of the Baltimore Regional Council of Governments' development planning division, died Monday of heart failure at his home on Windstream Drive in Columbia.

Services were being held today at St. John's United Methodist-Presbyterian Church at the Wilde Lake Interfaith Center, 10431 Twin Rivers Road in Columbia.

Mr. Clayton, who was 63, retired in July. He spent 27 years with the regional group, which was originally called the Regional Planning Council. Early in his career, Mr. Clayton had worked for the Baltimore County Planning Department.

He was a native of Cleveland, Miss., and grew up in Belle Glade, Fla. He earned a civil engineering degree at the Massachusetts Institute of Technology and a master's degree in engineering at Johns Hopkins University.

He was a member of the American Society of Civil Engineers and the American Institute of Certified Planners.

During the Korean War, he served as an officer in the Army Corps of Engineers.

He is survived by his wife of 35 years, the former Sally Wagner; three sons, John Clayton of Ellicott City, Robert Clayton of Takoma Park and Douglas Clayton of Columbia; and a brother, Henry H. Clayton of Fort Pierce, Fla.