450 ARCHITECTS - Key Persons


AIA, LEED

Job Titles:
  • Staff Member

David Bushnell

Job Titles:
  • Founding Principal, Passed
For over 20 years, David was co-founder and principal of 450 Architects. David's work was recognized with regional and international awards, in San Francisco, New York, Seattle, and Switzerland. He was responsible for the design and construction administration for a variety of projects, ranging from large-scale commercial projects to small-scale interiors, including educational, institutional, industrial and commercial buildings, housing, and renovation projects. David's collaborative approach yielded design solutions that were inspired by thoughtful understanding of projects, innovation and sustainability thate developed consensus and unique solutions tailored to each project. His latest projects included the LEED Gold Certified San Francisco Waldorf High School, San Francisco Unified School District's first solar powered school - the Argonne Child Development Center, and a private residence that integrated the first rainwater harvesting system for domestic use in the State of California. David was also most active in his community, serving on the Board of Directors of Architects Designers Planners for Social Responsibility, working to support environmental protection, ecological building, social justice and the development of healthy communities. His academic experience included a Bachelor of Architecture degree from Cornell University, teaching design at the Swiss Institute of Technology (ETH) in Zurich, Switzerland, and was a visiting critic at Columbia University and MIT. David is missed with each day 450 Architects continues to carry on.

Elaine Radcliffe

Job Titles:
  • Designer
Elaine was born in Hong Kong and educated in England, her diverse background brings a unique perspective to the firm. Elaine earned her Bachelor of Architecture at Manchester University and her professional licensing at The Bartlett, University College London. During her thesis, she collaborated with Porto School of Architecture questioning ideas of localism and placemaking. As a licensed RIBA Architect (UK), Elaine has over seven years' experience working on high-end hospitality projects and mix-use residential developments. She contributes as a skilled designer at all scales, from overall campus master planning to interior detailing and finishes. Her generalist training is grounded by the attention to detail, specific to each client and context. She values collaborating with user groups and specialist consultants to achieve thoughtful, timeless design solutions. Prior to 450, Elaine worked on several historic building redevelopments in Central London working on luxury apartments within complex existing structures. Elaine has also delivered hospitality and commercial interior projects around the Bay Area, working closely with brands such as The Giants, Napa Farms Market, Samovar Tea and Dolby Laboratories. Elaine is a committed lacrosse player, and as an active member of the BayLax Team, she contributes to local fundraisers and coaching activities.

Perry Wexelberg

Job Titles:
  • Designer

Phillip Sweeney

Job Titles:
  • Designer
Phillip Sweeney graduated from Cal Poly San Luis Obispo with a Bachelor of Architecture and a minor in Architectural Engineering in June 2014. He has previously interned in San Francisco and had the opportunity to collaborate with fabricators at Kreysler Associates and engineers at Enclos to develop an FRP (Fiber-Reinforced Polymer) facade system during his thesis year. While at Cal Poly he spent many hours experimenting in the great digital fabrication lab, wood, and metal shops. The idea of craft and how things are made, built or manufactured is fundamental to design and the immediate tactile and sensory ways we experience space. Travel has become an important part of his life and while in school he had the great opportunity to spend a summer studying abroad in Switzerland and take many extended field trips to cities in the U.S. Trips and experiences like that have grown a curiosity about place and culture, as well as driven him to pursue architecture that upholds culture by creating vibrant and inspirational places.

Richard Parker

Job Titles:
  • Founding Principal
Richard has more than thirty years of experience providing comprehensive architectural design services. As principal and co-founder of 450 architects, Richard has been responsible for design and project management on a diverse range of projects and has extensive experience leading neighborhood community design workshops. Richard advocates for changes to state and local building codes to facilitate green building, social and environmental justice, and received the SAFE-BIDCO 2006 Entrepreneur of the Year Award and Certificate of Recognition from the California State Assembly. He lectured at the 2005 World Environment Day and 2007 Dwell on Design conferences and has written articles on sustainable building for the San Francisco Business Times and Green Home Guide's "Ask an Expert" series. He volunteers his time with non-profit groups including Education Outside (formerly the San Francisco Green Schoolyard Alliance), San Francisco Urban Agriculture Association, the Youth Leadership Project for a Sustainable Future, The Local Investment in Child Care Project, and has mentored youth through the Architectural Foundation of San Francisco. Currently, he serves on the Advisory Board of Directors for the California Academy of Science's Teacher Institute for Science and Sustainability (TISS) and the International Schoolyard Alliance. Richard has a Bachelor of Architecture degree from Cornell University and is a licensed architect in California.

Summer Evans

Job Titles:
  • Designer
Summer has a strong commitment to design quality and maintaining client relationships through excellent service. She believes in creating a memorable experience through a human-centric design philosophy that puts the end-user needs first. She works on projects of all sizes and complexities, coordinates large teams on complex projects and develops strategies for collaboration and clear communication. Summer has a background in educational, commercial, residential, hospitality interiors and higher education. Summer holds a Bachelor of Architecture degree along with minors in Art History and Psychology from Florida Atlantic University.