meet the hewitt team

Our three studios – Architecture, Transportation Architecture and Landscape Architecture – combine to make up HEWITT. We’re a design firm dedicated to improving the way cities move and people live.


Principal, Director of Design - Transportation Architecture

Leah Ephrem, AIA, LEED AP, Assoc. DBIA

As the leader of the Transportation Architecture studio at HEWITT, Leah is motivated by connecting communities and people. Her passion and careful attention to the specific goals and character of each community is evident in the light rail, commuter rail and multi-modal transit centers she designs.

With more than 25 years of architecture experience, including over 15 years of urban transit facility design, Leah is helping shape the Puget Sound’s infrastructure as it prepares for anticipated growth and increased mobility demands. She has successfully directed and managed preliminary engineering and final design in architecture and urban design for a large array of regional transportation projects for Sound Transit, working in collaboration with King County Metro, Seattle DOT and multiple municipalities.


Founded in 1975

HEWITT is driven in the pursuit of inspired design that deepens the urban experience. We seek innovative solutions through a rigorous exploration of human constructs within historical, cultural and natural conditions. We focus our collective expertise and energy on a wide range of project types. Our work endeavors to evoke strong, positive emotional responses within the complexities of urban life.