He retired in the early 1990s after a 40-year career at firms including Stimpson Willis and Arthur J Willis & Thompson, the firm established by his father.
Willis was president of the RICS' QS division in 1978. He was also a respected arbitrator, a member of the Building editorial advisory board and a lecturer.
Willis' contribution to the profession included the updating of a number of standard text books originally written by his father.
His son Andrew Willis, the third generation of Willises in quantity surveying, is now London regional managing director at Franklin + Andrews.
Andrew Willis said: "As a prominent and highly respected member of the profession, my father has been a hard act to follow."
A funeral for Christopher, who leaves a wife and three sons, is due to be held next Wednesday.
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