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Client Solutions


We collaborate with clients to create high-performance, low-energy facilities and communities that are efficient, comfortable and healthful at every stage of their life cycles.

Sustainability At-A-Glance
sustainability Sandy Agrafiotis photo
sustainability Sandy Agrafiotis photo
LEED-accredited employees 200+
CO₂ saved 9,496 tons
Sustainable projects 400+

Here's How

We believe that achieving optimal sustainability on any project is an act of discovery. We are collaborative engaging all stakeholders in an open exploration. We are deeply analytical – drawing on a wide range of customized and industry-leading tools and techniques. And we are curators – instead of “telling,” we educate the team on key issues so that we can all, collectively, arrive at the right decisions.


We work with architects, engineers, building owners and managers from project inception through operations to help turn their sustainability vision into a reality. We collaborate on the design, construction and operation of sustainable buildings to provide innovative solutions that greatly reduce operational and embodied carbon, and contribute to more resilient buildings while meeting high standards for occupant comfort and health.

sustainability Zurich American Insurance Company, North American Headquarters © James Steinkamp Photography

Here’s how we can help you:

  • Passive House consulting
  • Embodied and operational carbon analysis
  • Design phase parametric daylight and energy analysis
  • Concept to advanced whole building energy modeling
  • Life-cycle assessment
  • Water balancing
  • Materials/Red List research
  • Integrative design process consulting
  • Charrette facilitation
  • Project certification (LBC, Net Positive, LEED, BREEAM, Greenpoint, SITES, Fitwel, Envision)

News & Resources


A New Rx for Buildings
April 07, 2021
What did the COVID-19 pandemic teach us about changing the design and function of buildings to help make them healthier and safer for occupants?

Press Releases

Alejandra Menchaca to Participate in U.S. Frontiers of Engineering Symposium
February 24, 2021
Alejandra Menchaca, Ph.D., LEED AP, WELL AP, a vice president in the Sustainability practice at Thornton Tomasetti, is one of a select group to be invited by the National Academy of Engineering (NAE) to attend the U.S. Frontiers of Engineering Symposium (USFOE) to be held virtually on February 25-26.