“GCI exceeded all expectations in the professionalism and commitment of their collaboration on the ClimateWorks Foundation offices. Their long-standing culture of deep green construction practice is unparalleled in the industry and was a key factor in the success of these LEED Platinum projects.”
Architect: Leddy Maytum Stacy


GCI continues to raise the bar on sustainable construction practices in the Bay Area. Through early collaboration with owners and architects, GCI implements the most advanced ideas in green building and workplace wellness.

Experienced with LEED, the Living Building Challenge, WELL and Fitwell, our team works to exceed the expectations of these programs. As active members of organizations like the US Green Building Council, International Living Futures Institute, Bay Area Deconstruction Policy Working Group, Northern California Recycling Association, and Sustainable Construction Leaders Group, we advocate for continual improvement towards net-zero impact construction.
View our 2019 Sustainability Report


  • High Construction & Demolition Waste Diversion Rates
  • Deconstruction and Reuse Strategies
  • Healthy Materials Expertise & Materials Vetting
  • Superior Indoor Air Quality Management During Construction
  • LEED, WELL, Fitwell and LBC Documentation


As part of our commitment to sustainable building, we created a set of internal standards to make our jobsites that much greener. Here’s what we do to make every project a little more sustainable:

Waste Diversion

Our minimum waste diversion goal is 80% on every GCI project

Responsible Consumption

We set up drinking stations on jobsites to drastically reduce single-use plastic water bottles

Workplace Wellness

We’re committed to protecting the health & safety of our employees onsite


ClimateWorks Foundation
National Resources Defense Council

Our Sustainability Clients

GCI encourages our clients to do more, often helping them to pull off the unexpected. Our team had an integral role in convincing three of our long-term clients, Accenture, Genentech and Dolby Labs, to make sustainability part of their corporate mission. Shortly after, we completed the firms’ first LEED-CI projects while exceeding their cost and schedule expectations.

With a track record of leadership, GCI has become the contractor of choice for some of the finest environmental agencies in San Francisco, completing projects for:

California Academy of Sciences
Climate Action Network
Climate Corporation
ClimateWorks Foundation
Environmental Defense Fund (EDF)
The Nature Conservancy
National Resources Defense Council (NRDC)
Save the Redwoods League
The Sierra Club
The Wilderness Society