Go from Predictable to O'MG.
Founded in 1974 by Jack O’Brien, our firm was built on the idea that people can achieve like a team and still treat each other like family.
The family has grown, but our culture remains surprisingly unchanged. That’s because we take care to work with people who share and support our values.The family-based firm has a long-standing reputation for its innovative design solutions with unique visioning and animation services.
With more than 4,500 projects completed nationwide, O’Brien Architects serves clients in a variety of market sectors including: office, multi-family, retail, mixed-use, industrial, assisted living, healthcare, civic, and interiors.
Studio Focus.
We lead, but we don’t force our ideas onto your architecture. Instead, we invite clients to participate in our creative charrettes. We check our egos at the door, and no idea is out of bounds. We avoid working strong ideas into the ground or applying a “signature style”.
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Big Design without Big Egos.
About Us
O’Brien Architects embodies the character of its founding President, Jack O’Brien. His emphasis on integrity, respect, and service has shaped our corporate culture. By adhering to this value system, our team has established a loyal client base and has developed professional relationships that span decades.
Our work is challenging. We push ourselves to be excellent at it and have a good time doing it. We create an experience with clients that is creative, friendly, professional, and open.
Sean O’Brien, AIA
CEO
Jack O’Brien, AIA
Founder & Chairman
Josh Pollard
Chief Operating Officer
Kathy Filbert
Chief Financial Officer
Robert Evans, AIA, LEED AP
President
Mick Granlund
Principal - Director of Planning / Business Development
Ashley Acuff, RID
Principal - Director of Interior Architecture
Lorelei Mewhirter, AIA, LEED
Principal - Director of Industrial Architecture
Amador Saucedo, AIA
Principal - Director of Design
Phil Bolton
Director of Business Relations
Rey Castillo, AIA
Associate Principal - Multi Family Studio Leader
Stefan Haessig
Associate Principal - Planning Studio Leader
Meet the Team
