McCobb's pieces were flexible and practical, designed to meet the needs of post World War II middle-class lifestyles. For example, his "living walls", complete with moveable room dividers and storage systems, allowed for maximum efficiency in limited spaces.

He became a household name in the 1950's, earning himself the nickname "America's Decorator". His work was exhibited at the Museum of Modern Art in New York, and the Merchandise Mart in Chicago.