JBA’s starting point was a common San Francisco building type: a deep, unfinished ground floor space serving as garage and storage, with a single living floor upstairs.  The owners—enthusiastic gardeners who also love modern design—asked JBA to convert the rear of the ground floor into a primary suite.  The distinctive feature of the new space is an oversized opening connecting the bedroom to the backyard: two five-foot-wide glass doors disappear into a pocket in the wall.  A new skylight and a custom-designed slat wall brighten the center of the home.