EHDD Announces Expansion to the Pacific Northwest

EHDD is pleased to announce that Seattle-based Patano Studio Architecture (PSA) is officially joining San Francisco-based EHDD. The merger formalizes the firm’s expansion plans to build a more significant presence on the U.S. West Coast. With this merger, Christopher Patano, Founder of PSA, becomes a Partner at EHDD.

“EHDD has been an unquestioned leader at the intersection of design, technology, and sustainability,” said Christopher Patano. “For over a half-century, the firm has fostered a culture of design that is responsive to clients’ needs while being responsible to future generations. Our merger with EHDD is a natural part of our progression as both individual professionals and as a community of creators in a rapidly changing world.”

EHDD creates transformational environments with many clients and design-build partners with offices in both the Bay Area and the Puget Sound region. With a greater Northwest presence, the company is ideally situated to serve clients and partners in the Western U.S.

“The Pacific Northwest, through culture, technology, and economy, is shaping the world we live in,” said Duncan Ballash, President and Principal of EHDD. “We look forward to deepening our involvement in the region through Chris’ leadership in Seattle.”

An award-winning design firm known for pioneering zero energy building design for over two decades, EHDD’s expanded practice can positively impact sustainable building practices and mindful development across a broader region.

“We are thrilled for this opportunity to deepen our partnership with a team that shares our collective curiosity and belief in the power of design to build a better future, “said Rebecca Sharkey, EHDD Principal.

About EHDD

EHDD is a global design firm headquartered in San Francisco, CA. Founded in 1946, EHDD seeks to create built environments that enhance our culture, honor the natural environment, and respect and delight the people who use them. EHDD serves clients worldwide in Education, Commercial and Workplace, Mixed-Use Development, Aquariums, Museums and Science Centers, and Government. EHDD is a seven-time winner of the AIA COTE Top Ten Award and is featured in “The Habits of High-Performance Firms, Lessons from Frequent Winners of the AIA COTE Top Ten Award.” Visit EHDD at

About Patano Studio Architecture

Founded by principal Christopher Patano in Seattle, WA, Patano Studio Architecture has been a proven design leader in the Pacific Northwest since 2003. PSA’s design-first, the award-winning practice has completed projects across Washington, Oregon and Idaho, recently earning the international 2020 Architecture Master Prize Award for the Goldendale Observatory, among other notable awards.