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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.

Allan Nunez

Designer

Amy Fashimpar

Registered Architect, LEED® APBD+C

Associate

Brad Jacobson

AIA, LEED® APBD+C

Principal

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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

Chris Detjen

LEED® APBD+C

Designer

Christian Wopperer

AIA

David Antoine

Interior Designer

Denise de Ville

Vice President, Business Development and Marketing

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Denise is responsible for leading business development, strategic planning, and leading the marketing team. Her experience and insight inform her role on the executive leadership team, helping guide the firm’s growth. She is known as a collaborator and visionary who leads from her core values, achieving excellence through doing what is right and best. She has specialized in complex, large-scale architecture, real estate development, corporate workplace, and sustainability. Having thrived in a variety of sectors for more than twenty-five years, she’s exceptionally skilled at understanding our clients’ goals and visions — and ensuring they serve as guideposts throughout the design and construction process.

Duncan Ballash

AIA, LEED® APBD+C

President & Principal

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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

Executive Assistant

Emily Bello

Associate AIA, LEED® APBD+C

Associate

Ethan Ahlberg

Registered Architect, LEED® AP

George Powell, Assoc. AIA

Vice President of Operations

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A community-builder at heart, George possesses a mix of design understanding and team building. He is responsible for hiring, training and professional development. George assures all of our projects are staffed to deliver exceptional results. He is a recognized leader in promoting the design profession to historically underrepresented groups. For more than thirty years, he’s developed innovative recruiting and talent development strategies to introduce an expanded awareness of career options in the architecture field.

Glennis Briggs

AIA, LEED® AP

Senior Associate

Haley Powell

Marketing Assistant

Harcoover Singh Bhatti

Designer

Heidi Hanzawa

NCIDQ

Interior Designer

India Hartwell

Project Administrative Assistant

Ivan Chabra

AIA, LEED® AP

Associate

Jay Manzo

Registered Architect, LEED® APBD+C

Jeemin Bae

Registered Architect, LEED® APBD+C

Senior Associate

Jennifer Devlin-Herbert

FAIA, LEED® APBD+C

Principal

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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.

Jenny Yin

LEED® AP

Interior Designer

Jessica Lane

AIA, LEED® APBD+C

Associate

Jessica Sano

AIA, LEED® APBD+C NCARB

Jing Liu

AIA, LEED® APBD+C

Designer

John Christiansen

Director of Construction Administration

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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.

Katherine Miller

Registered Architect, LEED® AP

Senior Associate

Ken Powelson

LEED® APBD+C

Associate, Senior Designer

Kevin S. Killen

AIA, LEED® APBD+C

Senior Associate

Kristen Chappa

Marketing Manager

Kristin Ishii

Registered Architect

Associate

Lauren Roan

Registered Architect, LEED® APBD+C

Associate

Lindsey Quiñones

NCIDQ

Lynne Riesselman

AIA, LEED® APBD+C

Senior Associate

Mary Lee

IIDA, CID, LEED® AP

Matt Ray

Controller

Associate

Mellie Alfano

Contract Administrator

Associate

Miguel Nieto

Designer

Monica Lin

Registered Architect, LEED® APBD+C

Associate

Pierre Zetterberg

AIA, LEED® AP

Senior Associate

Preeti Sethi

Accountant

Quyen Luong

AIA

Senior Associate

Rebecca Sharkey

AIA, LEED® APBD+C

Principal

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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 interior 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.

Robert Tranter

AIA

Associate

Ryan Metcalf

Designer

Samantha Lautman

Designer

Scott Arford

Associate Senior Designer

Scott Shell

FAIA, LEED® APBD+C CPHC®

Principal

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Scott is a nationally recognized expert on high-performance buildings. For the past decade he has led the design of EHDD’s university buildings for science, ranging from the advanced Biomedical Sciences Research labs to new facilities for entire departments designed to encourage interdisciplinary collaboration. He brings a strong integrated design approach to each project, partnering with clients, researchers, and the broader design and construction team to create facilities that excel in all aspects of their performance.

A pioneer in low energy and sustainable design, Scott serves on the National American Institute of Architects Advisory Group for the Committee on the Environment, where he is a frequent speaker. He has led the design of several of the nation’s first Net Zero Energy buildings. He has a particular focus on evidence-based design to verify actual performance and occupant satisfaction of the facilities to apply lessons learned on future projects to advance the practice of building.

SiJing Sanchez

AIA, LEED® APBD+C

Associate

Suzan Borazjani

Associate AIA

Designer

William Abbott

Director of Information Technology

Yew-Hoe Tan

AIA, LEED® APBC+C

All the EHDD Project Teams I have had the privilege of working with have reinforced EHDD’s culture by using clear, honest communication, constant attention to detail, quality assurance, and a drive to get it right. I would highly recommend EHDD to any and all organizations looking to develop carefully thought-out architecture that respects the needs of the client while at the same time striving for design excellence.
– Julian Halkett, Director of Construction – University of California, Santa Cruz