A vertical addition to the upper unit of a Broderick Street building, with a new accessory dwelling unit at ground level. Two separate pieces of work on one lot: a storey added at the top and a dwelling carved in at the bottom, both inside the envelope a narrow San Francisco lot allows.
The permit set documents existing and proposed conditions side by side at every level, so the reviewer can see exactly what is added — the massing axonometric does the same job for the street.
[ Site plan — existing above, proposed below, in the block ]
[ Massing — existing, and the addition above ]
[ Exit access travel distances — checked at every level against the code limit ]
[ First floor — existing conditions above, the new ADU below ]
[ Second floor — existing above, proposed below ]
[ Third floor — existing above, proposed below ]
[ Fourth floor — the existing roof above, the new top level below ]
[ Roof plan — the new roof deck and the proposed solar array ]
[ West elevation — the street front, existing ]
[ West elevation — proposed ]
[ East elevation — the rear yard, existing ]
[ East elevation — proposed ]
[ Sightline study — what a person on the opposite sidewalk can see of the addition ]
[ Longitudinal section — existing ]
[ Longitudinal section — proposed, from the ADU to the new top floor ]
[ Door and window schedules, with typical casement and sliding-door details ]