The MHA Site Office, the first structure built in Crestwood Hills for the post-war cooperative housing effort formerly known as Mutual Housing Association, springs from a concrete masonry abutment to cantilever on steel beams over a wooded canyon. Architects A. Quincy Jones, Whitney R. Smith, and structural engineer Edgardo Contini, a joint venture, created nine basic floor plans with bravado characteristic of the immediate post-war period. On 800 acres, eventually eighty of the original MHA designs were constructed. Today only thirty remain with nineteen declared cultural/historic monuments with the City of Los Angeles, including the MHA Site Office.