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Design.

Projects.

People.

We go beyond where client needs and missions take us — and bring our enthusiasm, wonder, craft, and technical chops along with us.

Adan Velazquez

Project Administrative Assistant

Angelo Freeman

Assoc. AIA, LEED® GA

Designer

Bobby Bracelin

Designer

Brad Jacobson

FAIA, LEED® AP BD+C, DBIA

COO, Partner

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Brad designs for the future. An industry leader in sustainable architecture, he is skilled at synthesizing diverse perspectives to craft technically rigorous, high performance solutions that are energy-efficient, budget-driven, and create exceptional occupant satisfaction.

Brad is leading the way in designing carbon neutral projects starting with today’s all-electric, Net Zero energy buildings. He spearheads mixed-use office developments, including the Net Zero Energy and LEED Platinum certified headquarters for The David and Lucile Packard Foundation, which was named a National American Institute of Architects Top Ten Green Building, to the Teaching & Learning Complex at UC Davis, a Net Zero-ready building set to form a new hub for student life.

Carl von Rueden

AIA

Associate

Charlotte D’Acierno

Designer

Christopher Patano

AIA, DBIA

Partner

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Christopher has over 26 years of experience and leads EHDD’s Pacific Northwest practice through the Seattle office. Christopher has served as the Principal-In-Charge for public clients throughout the Puget Sound region for nearly two decades, emphasizing design-build, prefabricated design, and integrated project delivery. The design-build delivery method highlights Christopher’s strengths of collaboration, communication, and innovation resulting in award-winning projects for clients in Washington. His portfolio as Principal-In-Charge includes educational, civic, and cultural projects for public agencies/clients across the Northwest.

Christopher’s design vision results in an architectural language that features locally sourced materials and high-performance building technologies. His work emphasizes low energy use as a part of long-term life-cycle cost thinking. Efficient structural resolutions overlayed with a material language that emerges from the site and its history elevate the designs of our public projects. His commitment to the user experience and the individual’s interaction with the natural world has resulted in projects recognized with international and national design awards, including the 2020 Architecture Masterprize and the 2021 Public Project of the Year for Washington State.

Christian Wopperer

AIA

Associate

Connie Chen

Accountant

Conor Dunn

AIA

Associate

Dan Leckman

RA

Associate

Deborah Liu

Assoc. AIA

Designer

Doris Guerrero

AIA, NOMA, IIDA, LEED® AP BD+C , WELL AP

Director of Interiors

Doug Speckhard

AIA

Duncan Ballash

AIA, LEED® AP BD+C

CFO, Partner

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A thoughtful advocate of high performance design for more than 30 years, Duncan brings an innovator’s zeal to every project. Under his leadership since 2005, EHDD has designed the highest number of Net Zero Energy buildings and LEED® Platinum certifications in North America. He believes the most creative and inspiring solutions — ones that flourish in an ever-changing world — are the result of intensive collaboration from the start with clients, stakeholders, engineers, and design consultants.

As chief author of the EHDD design philosophy in student housing, Duncan’s work has been recognized with numerous awards, including a National AIA Honor Award for Design for a student housing complex at University of California, Berkeley.

Eilish C. Cullen

Graphics Specialist

Associate

Emily Bello

Assoc. AIA, LEED® AP BD+C

Associate

Erik Barr

AIA

Senior Associate

Ethan Ahlberg

RA, LEED® AP, DBIA®

Associate

Glennis Briggs

AIA, LEED® AP

Senior Associate

Harcoover Singh Bhatti

Designer

Heidi Hanzawa

NCIDQ

Associate

Ivan Chabra

AIA, LEED® AP

Associate

Jamie Nguyen

Interior Designer

Jeemin Bae

RA, LEED® AP BD+C

Senior Associate

Jennifer Devlin-Herbert

FAIA, LEED® AP BD+C

CEO, Partner

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Jennifer Devlin-Herbert is a distinguished design leader for evolving trends in learning environments across multiple project types, from libraries to museums and educational spaces. Her key strength is an ability to effectively engage the community—the public at large, project stakeholders, the design team, and firm members. For Jennifer, engaging people is a way to discover a common vision, to incorporate fundamental values and goals, and thereby to represent a community with conviction.

Throughout a career spanning 25 years, Jennifer’s rich portfolio includes projects that reflect an unwavering commitment to her clients. Her work has been recognized with a National AIA Honor Award for Design.

Jessica Lane

AIA, LEED® AP BD+C

Senior Associate

Jessica Sano

AIA, LEED® AP BD+C NCARB

Associate

Jing Liu

AIA, LEED® AP BD+C, Assoc. DBIA®

Associate

John Christiansen

Vice President, Construction

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John knows how buildings come together with an unsurpassed attention to detail. Informed by more than 30 years of design and construction management experience, John conducts Quality Assurance reviews of all our projects and oversees every project under construction, from beginning to completion. He brings extensive knowledge to every project, across all delivery methods, including Lump Sum, Guaranteed Maximum Cost, Design-Build, Integrated Project Delivery and Multiple Prime Trade, with over $2 billion in completed work in his tenure here.

John is our technical advisor for research facility, aquarium and zoo projects, calling on his background and love of marine and biologic sciences.

Katharine Gunn

AIA

Katherine Miller

RA, LEED® AP

Senior Associate

Kelly Liu

Designer

Ken Powelson

AIA, DBIA®

Senior Associate

Kevin Lin

Assoc. AIA

Designer

Kevin S. Killen

AIA, LEED® AP BD+C

Senior Associate

Kristin Ishii

RA

Associate

Lauren Roan

RA, LEED® AP BD+C

Associate

Lindsey Quiñones

NCIDQ

Associate

Lynne Riesselman

AIA, LEED® AP BD+C

Principal

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Lynne approaches design with a passion for leveraging the interconnectedness of the natural and built environment. Over the last 14 years, she has brought a rigorous design ethic to museums and cultural centers, aquariums, higher education, and commercial projects. With recent work including the Kansas City Zoo Aquarium, the Marine Science Institute of Redwood City, and the Presidio Tunnel Tops Youth Campus, Lynne is focused on creating spaces that engage and inspire with a lasting impact for the greater good. She is a member of the American Institute of Architects (AIA).

Mahdi Ghavidel-Sedehi

Assoc. AIA

Designer

Marc-Eddy Loriston

IT Coordinator

Mary Lee

IIDA, CID, NCIDQ, LEED® AP, WELL AP, Fitwel

Associate

Matt Ray

Controller, Fitwel

Associate

Megan Ryan

Designer

Mellie Alfano

Contract Administrator

Associate

Monica Lin

RA, LEED® AP BD+C, Assoc. DBIA®

Associate

Nicole Kfoury

Marketing Coordiantor

Patricia Heye

AIA, LEED AP BD+C

Pierre Zetterberg

AIA, LEED® AP

Senior Associate

Quyen Luong

AIA

Principal

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Quyen brings imagination and sensitivity to complex design, working on projects that range from aquariums to multi-use housing, schools, and libraries. She approaches design with the intent of transforming the everyday into the unexpected, translating concepts into places that embody her client’s core mission. Recent projects include the Pacific Visions expansion at the Aquarium of the Pacific, UC Davis Tercero Student Housing, and the National Aquarium of New Zealand. Quyen is a member of the American Institute of Architects (AIA).

Rebecca Sharkey

AIA, LEED® AP BD+C

Partner

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An artful communicator, Rebecca is highly skillful in translating her clients’ vision into site-responsive places of beauty and performance. Clients come first for Rebecca. An  architect for two decades, she is both optimistic and passionate about the power of design to enhance people’s lives and the natural environment for the better. Rebecca focuses on higher education, workplace, and cultural facilities with an eye to creating sustainable places and spaces that inspire and engage.

Ryan Metcalf

AIA

Associate

Savannah Cofield

Studio Administrative Assistant

Scott Arford

Associate

Scott Shell

FAIA, LEED® AP BD+C, CPHC®

Climate Innovation Advisor

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In an advisory role, Scott will continue the momentum from his earlier work at EHDD to accelerate a sustainable market transformation by linking R&D and policy with architectural practice to achieve a zero-carbon built environment by 2045. Scott is the Associate Director for Industry at the ClimateWorks Foundation.

SiJing Sanchez

AIA, LEED® AP BD+C, Assoc. DBIA®

Senior Associate

Steve Dangermond

RA, LEED® AP BD+C

Principal

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Steve has over 35 years of designing, planning, and managing projects across multiple scales and sectors, from civic and cultural facilities to science and research buildings. Steve is known for his empathetic and strategic design approach on programmatically rich and unusual projects creating high-performance buildings that reflect the cultures of the institutions they house.

His commitment to design excellence and social functionality result in sustainable and delightful buildings. He has led the design of several award-winning projects including the Global Ecology Research Center at Stanford University, The Kavli Institute for Particle Astrophysics at the Stanford Linear Accelerator Center, and the Sanford Homestake Visitor Center in South Dakota. He has lectured on a wide range of topics from trends in aquarium design to buildings for and about science.

Steven Nguyen

Accountant

Suzan Borazjani

Assoc. AIA

Designer

William Abbott

Director, Information Technology

Yin Fu

Designer

Yuchen Song

Assoc. AIA

Designer

Zachary Gong

AIA

Associate

EHDD has deeply respected our guiding principles while creating functional, sustainable, and inspirational spaces that beautifully support and enhance our mission and program.
– Lucinda Lee Katz, Former Head of School, Marin Country Day School