Design, Permitting, Construction Documents & Construction Administration
General Contractor Pacific Engineering
Structural Engineer Joyce Cheng, P.E.
Total Area: 3,500 sft.
SMA along with Pierre Luigi Serraino AIA acting as design consultant created this top story addition to the existing
historically significant Mid- Century Modern house
in Potrero Hill, San Francisco, CA.
The top floor addition of 1500 sf. was added and
designed to pay tribute to the mid century style of
the existing home while introducing new modern
materials. The 1950's building required an extensive
structural upgrade receiving new steel & heavy timber
at each level. The new addition features a fully retracting
glass face and large decks and balconies with
sweeping views of downtown San Francisco and