We have great faith in our team to provide superior service at each step of the way.

With an amazing team of over 80 dedicated people working together to a common vision to create innovative design inspired by the unique qualities of place, we are able to take on any architectural, interior design or urban design opportunity. Our team includes some of the most hard-working, collaborative, and locally skilled professionals offering decades of experience in delivering successful projects in western Canada.


The importance of teamwork begins with the leaders of our firm. We have built a leadership team that represents every part of our firm including the Partners, Associates, Managers and Directors, as well as many of our senior staff. The Leadership Team has direct input into the direction of the firm and leads our team accordingly.

The Partners

Doug Gage Architect, AAA, SAA, MRAIC


Doug Gage

Doug's interest and enthusiasm for design coupled with his enjoyment in working with great people are at the foundation of our success. Doug has led projects in many project sectors, but his focus has always included the design of great places for teaching and learning as well as health, wellness and recreation. Doug is continuing to lead the team through his active involvement as a mentor, a Partner and a member of our Leadership Team, in addition to guiding some of our most significant projects, including the recently completed Elevation Place recreation centre in Canmore, AB.

Rick Lewis Architect, AAA, SAA, MAIBC, MRAIC, BES, MARCH


Rick Lewis

Since joining Gibbs Gage Architects in 1987 Rick has been instrumental in the success of the firm through his unwavering commitment to project success. Rick has provided design leadership on a wide variety of project types and has a keen focus on commercial, retail, industrial and urban design initiatives. He understands the intricacies of the planning approvals process and works with people to create superior solutions. As a Partner since 2000, Rick has led the successful implementation of many signature projects of our firm including, Seton Retail and Deerfoot Meadows.

Vincent Dods Architect, AAA, SAA, MAIBC, MRAIC, LEED® AP


Vincent Dods

Vincent is a creative architect with an unwavering commitment to designing innovative solutions based on a thorough understanding of client and stakeholder goals and objectives. Vincent is co-chair of the City of Calgary +15 Design Committee and serves on a number of advisory committees and volunteer organizations, both community and corporate. A Partner with the firm since 2002, Vincent has led many signature projects including; the SAIT Polytechnic Trades & Technology Complex, Eighth Avenue Place, Keynote Urban Village and the Mosaic Potash Hill Centre Tower III in Regina, SK.

Stephen Mahler Architect, AAA, SAA, MRAIC, AIBC, LEED® AP


Stephen Mahler

Furthering his passion to create great places for people, Stephen believes in the importance of listening and ensuring that a clear understanding of client stakeholder objectives leads to meaningful solutions through a highly collaborative process. His experience includes work in many project sectors with a focus on institutional projects, health care design, multi-family residential and seniors housing. As a Partner since 2007, Stephen has led many noteworthy projects such as the Agrium Western Event Centre, Sheldon M. Chumir Health Centre and the CBE Education Centre.

Chito Pabustan Architect, BEs, BArch, LEED AP

Partner, Managing Director - Design

Chito Pabustan

Chito has been working as an Architectural Designer in Calgary since 1991, joining GGA in 2006. Chito is a highly creative and extremely effective Designer who consistently achieves exemplary design solutions. Chito believes that architecture is about the relationship between built form and the natural landscape, the people it shelters and inspires. He is an architect who believes in collaboration and facilitation of a collective vision and how to effectively bring it into reality.

David Wittman Architect, AAA, BEnvd, MArch, LEED AP


David Wittman

David joined GGA in 2006 after graduating with a Masters in Architecture from the University of Manitoba. Believing that great design creates opportunities, David designs with the notion that the built form shapes the ways we create community, the way we engage with each other, our feeling of security and our sense of control in the world. His talent and knowledge in collaborating and managing large and diverse user groups has resulted in numerous award winning projects throughout western Canada.

Leadership Team

Allen DeBoer MArch, BES, BEDS

Associate, Design Director

Brian Massey BArch, BSc. Arch

Studio Lead, Design

Clint Rivard AT, AScT

Managing Director, Projects

Dave Ackerman AT, BDT, CET

Associate, Manager - Architectural Technology

Eric Longchamp Architect, AAA, BArch, LEED® AP

Design Manager

Erin Jensen Dipl. Arch. Tech.

Team Lead, Architectural Technology

Jonny Hehr Architect, AAA, MArch, BDes

Managing Director of Design

Keri Himmelreich C Tech

Director of Building Science - Manager, Architectural Technology

Lynn McCormick


Nicholas Trahan Dipl. Arch. Tech.

Team Lead, Architectural Technology

Sandra Zelt Dipl. Arch. Tech.

Team Lead, Architectural Technology

Stephanie Yeung Architect, AAA, MArch, BEnvD

Studio Lead, Design

Todd van der Burgh AT, BKin

Director of Building Information Modeling, Manager - Architectural Technology

Wade Wheeler A.ScT

Associate, Managing Director - Architectural Technology