100 First



100 First



100 First

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Work. Thrive. First.

Step inside and the difference is clear. At 100 First, work and life merge effortlessly together. Grab a coffee in the airy, sun-soaked lobby. Find a quiet moment on the public garden terrace. Enjoy a dizzying array of fine dining, boutique fitness, and lodging options located just outside your door. Welcome to the heart of San Francisco’s vibrant South Financial District. Welcome to 100 First.

To learn more about this and other Kilroy properties, please visit kilroyrealty.com.

Vendor Access

If you are a vendor and you are planning on visiting 100 First Street, you must submit a vendor access request prior to your visit.


Bees At Work

100 First is excited to be the home to a honey bee hive! Located on the Sun Terrace in a locked location, the bees are buzzing and producing honey. We are happy to provide a home for local honey to be produced with plant and flower nectar collected in the neighboring areas.

Urban beekeeping creates the opportunity to educate citizens about the environment, repurpose unused spaces within our cities, and produce hyper-local honey.

We invite you to visit our hive’s very own webpage here to follow along for live updates on our bees traveling through the neighborhood.

100 First Wins 2021 TOBY Award!

The Outstanding Building of the Year (TOBY) Awards is the most prestigious and comprehensive program of its kind in the commercial real estate industry, recognizing quality in commercial buildings and rewarding excellence in building management. 

We are incredibly proud to announce that 100 First Street secured this prestigious recognition at the BOMA Bay Area TOBY Awards Gala, among the 250,000 – 499,000 square feet category.  Our building will be moving on to the next round of the competition where we will compete against other buildings throughout the Pacific Southwest Region (CA, AZ, NV, HI). The winners from the regional competition will then have the honor of competing at the international level!

We especially want to thank all of our wonderful tenants, vendors, and building teams at 100 First for being part of this journey.  We look forward to continuing through this competition! 


EPA’s 2020 Energy Star Award

By cutting energy waste and doing our part to protect the environment, 100 First has earned the U.S EPA’s Energy Star! Our building uses 35% less energy and generates 35% fewer greenhouse gas emissions than similar buildings across the nation. Thank you to our energy management team and all our visitors and occupants for helping us save energy! Learn more at energystar.gov/buildings


Office Managers, please create an account to access all of the building tools & resources.

Get Started