Hallie was born and raised in San Francisco.  While studying urban planning at UC Berkeley for undergrad, she discovered her interest in architecture as a means to create inspiring social spaces and as tool for progressive community development. After completing a Masters in Architecture from Harvard’s GSD, she spent time in upstate New York exploring the connections between ecology, farming and architecture.  Upon returning to the Bay Area she became an expert in commercial interior and office developments, before branching out to start CAHA. When not at our office or on-site, Hallie is a leader in youth design-build programs, bay area rock action and happens to be a pizza eater extraordinaire.

Hallie is a California Licensed Architect, C-38753

Casey is a California architect, designer and craftsman — a rare practitioner with genuine creative vision alongside deep hands-on construction and fabrication experience. Raised in Napa County, trained in Architecture and Fine Arts at the Rhode Island School of Design (RISD), he specializes in housing, with broad experience spanning public schools, mixed-use, single-family residential work, and custom fabrication. Grounded in a deep connection to nature and a finely tuned sensitivity to place and materials, Casey designs and orchestrates construction of spaces that are not only beautifully considered, but rooted in where, why, and how they are built.

Casey is a California Licensed Architect, C-40159