543 Howard Street
San Francisco, CA
The new owner of the 543 Howard Street building, a 1920's
warehouse, wanted to give new life and a new purpose to the building. The
project converted the underutilized structure into a mix of uses, of office
and non-office space, while retaining the building's character. Comprehensive
upgrades were needed to meet current codes and tenant needs. Additional
stories were planned to further optimize land use in the high priced real
estate of downtown San Francisco.
The addition of two stories onto the existing structure
provided 50% more available tenant space. KTA retained the building's original
concrete façade and designed the new levels sympathetic to the original
building yet with their own unique character. The resulting structure has a
height and mass that blends well with neighboring structures.
KTA designed a new core serving both uses, including new stairways, restrooms,
elevators and lobbies.
Use of the existing maple wood floors and exposed concrete beams and
columns meets the goal of maximum material reuse while preserving the space's
natural beauty. Recycled heavy timbers and flooring, non-toxic finishes and
materials with a high recycled content further enhance the original
architectural character in an environmentally friendly manner. Energy
conscious features -- passive solar design, sun shading, and clean energy emergency
generators -- have been incorporated in the design.
A large operable skylight provides daylight and fresh air to office
interiors. Access to the building's large rooftop provides an open,
sunny area with views of San Francisco.
Seismic and ADA upgrades are to be completed along with structural
reinforcement and the addition of full fire prevention, electrical,
and energy efficient mechanical ventilation systems.