What We Do

Architectural Dimension’s extensive and proven experience includes the delivery of complex projects involving architectural design, agency management and entitlement, land-use and master planning, program/project management, facility design and management, information management (database design/document control), developing design/build solutions, and construction management and administration.

With a robust portfolio of diverse projects, we have the experience necessary to provide competent, creative, and enriching solutions on your next project.

Accountability, communication, and integration are at the core of our work, and we have established sophisticated project controls and document management systems that enable us to track and manage all facets of large projects.

Our Leadership

James Heilbronner, RA, NCARB, AIA
Founder, President and Principal Architect

Jim provides the day-to-day leadership, management, and vision necessary to ensure that AD has the proper operational controls and people in place to operate effectively and serve our clients efficiently. Jim is an industry leader with over 40 years of broad expertise in every stage of project delivery, team leadership, culture and communications, marketing and operations, business strategy, PR and media, strategic partnerships, and alternative delivery. He is an active member of a number of organizations – including leadership, trade associations, and industry groups – that support the development of under-served populations, economic development, and sustainable practices, both in the Bay Area and around the world.

Most notably, Jim has served as the Principal Architect for the highly publicized Fox Theater, Rotunda Building, and Bill Graham Civic Auditorium Historic Renovations, for the Golden State Warriors’ Oracle Arena Mezzanine Suites, and for over 2 million square feet of retail projects. Jim is also currently serving as the Program Manager on the multi-faceted Oakland Army Base Reuse Plan, a $220M+ public/private Bay Area mega-project, that spans over 300 acres and includes overseeing dozens of consultants; negotiation of 21 development agreements; extensive coordination between almost 50 stakeholders and agencies; identification of and compliance with diverse local, state and federal funding sources; coordinating with 9 oversight entities; and a monumental community outreach effort.


Margit E. Whitlock, AIA, LEED AP ID+C
VP Interior Design

As Vice President of Interior Design, Ms. Whitlock is responsible for creating the concepts that drive the design and managing the client expectations till the end of the project.

Her professional experience includes all aspects of architecture, interior design and the building process including project programming, custom FFE, art programs, construction documents and construction administration. For the past twenty-five years Margit has focused on resort/hospitality design with projects nationally and internationally. Her project list includes hospitality, commercial, retail, restaurants, spas and creative office environments.

She received a Bachelor of Architecture degree from the University of Oregon with academic strengths in urban planning and interior architecture and extended studies in Art History and Architecture at the University of Copenhagen, Denmark. Ms. Whitlock is an accomplished speaker with engagements at multiple ARDA conventions, HD Boutique show as well as being frequently published in magazines such as Developments, Resort Trades, Hotel Business, Hiatus, Vacation Industry Review and Resort Management and Operations.


Erika Ramirez
Erika RamirezChief of Staff
Jeffrey MacAdam
Jeffrey MacAdamSenior Project Manager
Michael Semple, AIA
Michael Semple, AIASenior Project Manager
Steven Morales, AIA
Steven Morales, AIAProject Manager
Carolina Mindiola, LEED
Carolina Mindiola, LEED Assistant Project Manager
Umoja Akbar
Umoja AkbarSenior Job Captain
Malavika Rao
Malavika RaoJob Captain
Sridhevi Vaidyanathan
Sridhevi VaidyanathanSenior Designer
Mae Baja
Mae BajaDesigner
Dominic Dutra
Dominic DutraSenior Agency Manager
Owen Hill
Owen HillAgency Manager
Tramy Nguyen
Tramy NguyenBilling Manager
Adrienne Collins
Adrienne CollinsAdministrative Supervisor
Shannon Roark, ASID
Shannon Roark, ASIDMarketing Manager/Interior Designer
Yolanda Campbell, Associate AIA
Yolanda Campbell, Associate AIAJob Captain
Sergio Larios
Sergio LariosSenior Interior Designer
Quynh Dang
Quynh DangJob Captain
Juergen Zierler
Juergen ZierlerProject Architect
Erika Vargas
Erika Vargas
Architectural Assistant

Our Clients

Awards & Recognition

Merit Award, Architecture
Fox Theater, Oakland
American Institute of Architects, California Council

Award of Excellence
City of Stockton, CA Planning Commission

Unsung Hero Award
Track Record/Decade of Quality
Jobs and Housing Coalition

Award for Excellence
City of Hayward, CA Arts Council

Beauty of Environment Award
Walnut Creek Action for Beauty Council

National Preservation Award
Renovation of the Fox Theater, Oakland
Preservation Leadership Forum

Mayor’s Award
for Taco Bell

Top Projects in the North Bay, Hospitality
Hampton Inn, Napa
Business Journal

Superior Service
Architects Roundtable
Hilton Corporate

Outstanding Achievement, Historic Preservation Design
Rotunda Building
California Preservation Foundation

For Creativity and Dedication
In Bringing the Brenna Berger Adath Israel Preschool to Life

Certificate of Appreciation
City of Concord, CA Design Review Board

Certificate of Special Achievement
San Antonio Center
City of Mountain View Mayor’s Awards