Eco-effective Design

William McDonough + Partners designed 333 Brannan, now fully leased by Dropbox, to be resource effective to support human and ecological health, and to respect the South of Market historic district character.

Dropbox Headquarters,
San Francisco, California

Inspired by Cradle to Cradle Design™, this LEED® Platinum certified building features large, highly flexible, open-office floors configured around a central court. The design allows for ample natural light into the office areas and for passive ventilation through closely spaced operable exterior windows. Courtyards at the front entry on Brannan Street and on the Stanford alley are richly landscaped spaces open and available to the neighborhood. The exterior of the building combines brick, high-performance glazing, metal sunshades and exposed concrete which is in visual harmony with the surrounding historically industrial neighborhood.

Integrated rooftop photovoltaic panels supply a portion of the building’s base energy needs and are expected to reduce energy usage by more than 25%. On-site rainwater capture and reuse reduces the potable water demand by more than 45%. Native drought-resistant plants and plants that attract butterflies, hummingbirds and other pollinators, which are used to landscape the ground-level courtyards and the occupied roof deck, creating restful park-like settings for the building occupants and the surrounding community.

333 Brannan fits right into the bustling and burgeoning South of Market district, an area that is becoming a vibrant hub for live / work / play lifestyles. To support the tenants of this new healthy, contextual, transit-friendly, infill project, WM+P designed the building to accommodate alternative mobility strategies such as bike racks, an on-site car share program and electric vehicle charging stations.



Kilroy Realty Corp.


office space, ground floor retail, and a roof garden


180,000 square feet


Completed 2015


William McDonough + Partners, Design Architect
Loisos + Ubbelohde, Architecture & Energy Consultant
Rana Creek, Landscape Architect
WSP, MEP Engineer
Nishkian Menninger, Structural Engineer
Sandis, Civil Engineer
Charles M. Salter Associates, Acoustics / AV / Telecommunications
Swinerton Builders, Contractor

Awards + Certifications

LEED Platinum Certification