About Us

The most recent science tells us that unless we reduce the amount of carbon dioxide in the atmosphere to 350 parts per million, we will cause significant and irreversible damage to the environment. Spanning the entire evolution of the human species up to the Industrial Revolution, the concentration of carbon in the atmosphere remained at roughly 275 parts per million. Now, according to NASA scientist James Hansen, the bottom line for the planet is 350 parts per million carbon dioxide in the atmosphere. We are currently at 383 parts per million.

Over 70% of energy consumption and 38% of carbon emissions are from construction, operation and decommissioning; thus the built environment is the single biggest contributor to anthropogenic global warming. All new and existing building projects need focused, robust strategies to reduce carbon emissions. Retrofitting existing buildings within a short time frame and more importantly ensuring their performance conforms to best practice standards are priorities.

With over 50 years of combined experience in high performance and low energy building design and renovation, Engineering 350 provides the leadership, knowledge and experience to reduce carbon emissions in the built environment. No project is too small; all projects in the built environment need to be zero-carbon projects.

Every project counts.

We are a collaborative, interdisciplinary firm of innovative building services engineers and consultants. Our goal is to provide solutions that find an optimal balance between environmental benefit, social well-being and financial viability for the client and for the global community. In every project, we encourage the architectural and engineering teams to understand and explore the unique challenges presented by the design brief. We use energy modeling in the early stages of design to communicate concepts and facilitate understanding of the interplay of daylight, solar radiation, thermal comfort, ventilation, and acoustics. We understand that early collaboration with the owner, the architect, the wider design team, and the community leads to successful and enduring buildings and to communities that are valued by all stakeholders. Our building system recommendations result from this collaboration and respond to the desired architectural expression. We explore passive and natural cycle strategies early to minimize reliance on active systems, and we evaluate carbon emission and life cycle implications of building systems and material choices in the design process. We take water and waste cycles into consideration with energy and emissions in our drive to create and retrofit zero energy, zero waste, and water independent buildings and communities.

Ray Keane
Ray is a licensed professional engineer and LEED® accredited professional who has over 20 years of design and construction experience. Ray has worked in both the design and construction industries, this unique experience allows him to design high-performance building systems that are practical and economical. Ray’s vision is global; he has practiced in both Europe and in the US, and he has worked on projects in five continents. Ray is committed to delivering regenerative and living buildings in this decade and is currently providing leadership in a number of planned developments that are set to achieve living building status.

Ray was educated in Ireland and received his engineering degree from Trinity College Dublin. He completed postgraduate studies at the Conservatoire National des Arts et Métiers in Paris France. Ray lived and worked in France for seven years before moving to the San Francisco Bay Area. Noted projects include La Grande Arche de la Défense, Paris; Musee du Louvre,Paris; de Young Museum San Francisco and the LEED® Platinum ARD building at NAU, Flagstaff Arizona.

Kim Zylker
Kim is a licensed professional engineer and LEED® accredited professional who has widespread design and project management experience as a mechanical engineer. Kim received her engineering degree from Cal Poly San Luis Obispo. Prior to forming Engineering 350 Kim worked as a project manager and project mechanical engineer on a variety of sustainable projects including San Francisco Friends School in the historic Levi Strauss Building, California State University East Bay’s new Recreation and Wellness Center, Stanford University’s Institute for Economic Policy and Research, and the Grand Hyatt San Francisco Renovation.

Kim looks at every project as an opportunity to collaborate with the architectural team and to create design solutions that are not only fully integrated but deliver on the promise of increased building performance. Kim also believes that good project management is critical to a project's success, and to this goal she strives for excellent communication between her team and the client.

256 Moulton Street
San Francisco, CA 94123