 The building site is on a steep hill , so the street @-@ level entrance at the upper edge of the property is not the lowest floor . Four stories of apartments start at the ground floor and go up , and two more floors consisting of a 10 @-@ car garage and a sub @-@ basement storage space are below grade , jutting out to the east because of the slope . A manager 's apartment was added in 1947 by extending steel beams from the garage and suspending a two @-@ floor unit with steel cables . Structural engineer W.S. Ellison oversaw construction of the primarily wooden frame structure , built atop a foundation and two utility floors made of reinforced concrete to meet exacting state requirements for stability . 
