At HPA, we take a practical, forward-focused approach that combines design expertise with real-world problem solving. Our work incorporates the latest industry trends—including taller building solutions, advanced automation, EV charging infrastructure, energy efficiency, and carbon reduction—preparing clients for both today’s needs and tomorrow’s demands. With offices in Irvine and Oakland, California, and a portfolio that spans nationwide master plans and complex industrial facilities, we deliver spaces that power the backbone of modern life. From manufacturing and processing to storage, logistics, and distribution, industrial facilities provide the infrastructure that keeps economies moving and communities supplied.

Our culture is built on collaboration and a strong belief that our people are the foundation of our success. We are deeply invested in supporting and empowering our talent, fostering an environment where creativity, expertise, and innovation thrive. With over 45 years of experience and licensure in more than 30 states, we deliver consistent, high-quality design solutions across the country. Our national reach and local insight enable us to navigate diverse markets, streamline entitlement processes, and support the goals of our clients with trusted relationships.

HPA By The Numbers

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Million S.F of Industrial Facilities Designed
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Years In Business
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Million S.F of FDA Validated Biotech Facilities

Meet Our Team

Our Leadership

  • Yong Nam

    Managing Principal

  • Susan Littlefield

    Managing Principal

  • Bob Jacob

    Managing Principal

  • Hoon Keun Park

    Regional Director

  • Matthew Lee

    Regional Director

  • Sha Mahoney

    Regional Director

  • Teresa Goodwin

    Regional Director

Irvine Office

Oakland Office

Values of HPA Architecture

Proven Expertise,
Trusted Legacy

With over 45 years of experience, we don’t follow trends — we set them

Client-Centered
Design

We prioritize our clients’ goals through thoughtful, collaborative architecture that drives real-world results.

Efficiency
and Precision

We deliver high-quality solutions with speed, efficiency, and attention to detail — meeting the demands of today’s fast-paced industrial market.

Creative
with Purpose

We approach each project as a creative collaboration — where artistic vision and architectural purpose come together to inspire and endure.

Built Around
Our People

As an employee-owned firm, we foster a professional environment where talent is empowered, collaboration is valued, and growth is shared.

Our Clients

  • Prologis
  • Brookfield Properties
  • REDA – Real Estate
  • Development Associates
  • IDI Logistics
  • First Industrial Realty
  • EBS Realty Partners
  • Link Logistics Real Estate LLC
  • Amazon
  • Whiting Turner
  • Panattoni Development Company
  • McDonald Property Group
  • Goodman Development
  • Hillwood
  • Trammell Crow Company
  • Overton Moore Properties
  • Covington Group, Inc.
  • Industrial Property
  • Shopoff Realty Investments
  • Hines
  • Dermody Properties
  • TPA Group
  • Proficiency
  • RD Olson
  • Orbis
  • Core 5
  • Mark IV
  • P&L Realty
  • LAM
  • North Palisades
  • Inland Harbor
  • DIV
  • Seefried
  • Rockefeller
  • Xebec
  • Messenger
  • Ridgeline
  • Steelwave
  • Lovett
  • Terawatt
  • EMC
  • Ares
  • LPC
  • Dunn Simi LP
  • RBABS
  • Orden / Thrifty
  • Magellan
  • Hodgden
  • Conco
  • Redwood West
  • North Point
  • Transwestern
  • OMP
  • Birtcher
  • Alere
  • CBRE
  • CenterPoint
  • Coilliers
  • Cushman & Wakefield
  • Dedeaux
  • IDS Real Estate
  • JLL
  • Tejon Rach
  • LDC
  • McLaughlin
  • WPT
  • Westpoint
  • Lee & Associates
  • Stream Realty
  • Buzz Oates