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Sustainability is central to all of the activities of 450 architects. We care passionately about all spheres of environmental impact, such as site, energy, water, materials, and health. We constantly strive to use our knowledge about the environmental impacts of buildings to create positive contributions to the natural world through design. We use site design to incorporate passive solar heating, natural ventilation, and year-round outdoor spaces in tune with local climate. We choose building products that are recycled, re-purposed, non-toxic or low-VOC, and have rapidly renewable content.

We know that green building is the right thing to do for the earth and its inhabitants, and we increasingly argue that sustainable design increases productivity and saves money. We also aim to reduce and mitigate buildings' negative environmental effects through our advocacy and educational outreach, helping to create a more informed public that will share our enthusiasm for green building.

  • We're working on preliminary architectural design for Filigreen Farm in Northern California's Anderson Valley. Intended to become a biodynamic farm and research facility, this long-term project has the potential to set an exciting precedent for sustainability in mixed-use agricultural developments.
  • San Mateo County (California) hired 450 architects to support the growth of sustainable design countywide by writing a comprehensive Sustainable Building Guidelines and Checklist that covers all types of construction and projects of all sizes. The county uses the material to promote a greener mindset and more sustainable building throughout its 21 communities. Data gathered by the county from project checklists helps track green building efforts countywide.
  • We support the U.S. Green Building Council and its Leadership in Energy and Environmental Design (LEED™) standards. This voluntary national standards program recognizes the development of high-performance, sustainable buildings, and we have a LEED-accredited designer, Raphael Sperry, on staff who assists on projects that seek LEED certification.
  • The Green Schoolyards Alliance recently toured the Argonne Child Development Center. We support the alliance's goals to replace schoolyard asphalt with a schoolyard greenbelt—not yards of grass in the literal sense, but inviting, attractive landscaping that illustrates pride of place and an awareness of the tie between environment and health.
  • We participate in the American Solar Energy Society's annual national tour of solar homes. Twice in years past, the tour began at our award-winning Argonne Child Development Center with an examination of its solar installation and other green building components.


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The 450 studio is involved in organizations that research, support, and advocate for a wide range of earth- and family-friendly activities:

VOC stands for "volatile organic compounds," which includes many known and suspected sources of environmental health problems such as formaldehyde, nitrogen oxides, and more complex chemicals frequently released by paints and adhesives.

"Biodynamics is a science of life-forces, a recognition of the basic principles at work in nature, and an approach to agriculture which takes these principles into account to bring about balance and healing." - Biodynamic Farming and Gardening Association

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