With roots from 1964, at OZ we value a pioneering spirit of innovation, an attitude of openness and collaboration, environmental and community stewardship, and staff empowerment to assure the continuum of our practice.

Our approach

OZ believes in a collaborative design process in which our team fully engages with yours to deliver an outstanding project while encouraging open communication between team members.

Our goal is to create beautiful places with lasting value for the communities they serve and encouraging the cultures they embrace.


Today, we are more than 130 architects and interior designers within seven primary practice areas. We value the diversity of every individual team member and harness their unique skills in the pursuit of design excellence.


We’re committed to protecting the environment, a commitment we fulfill by incorporating sustainable principles and responsible practices into our own operations.

We believe every client deserves a resilient, healthy, high performing, and beautiful building.

Diversity, Equity, and Inclusion

Diversity, Equity, and Inclusion are at the core of our belief in architectural design and the way that we practice. We value how people live, work, and engage in spaces. At OZ, our commitment to DEI is reflected in our hiring practices and staff development programs, our inclusive community engagement approach, and the projects we champion across a variety of client sectors. We’re continuously learning where and how to improve our DEI efforts and we are taking action as we grow to make a positive impact on the communities we build.


The OZ name is taken from the initials of two of our founding Principals, Tom Obermeier and Alan Zeigel. Both attended CU in Boulder and worked together in the same office early in their careers. After founding separate firms, the late 80s brought difficult times in Denver. Tom and Alan thought that combining the talents and resources of their firms made sense, both for their staff and their clients. The rest is history.

Our story has been unfolding for more than 50 years.


As a people-centered organization, we excel in the world of design for our clients worldwide and are equally proud of our culture that encourages and supports a strong work-life balance.

See the latest projects, what we're thinking, and where we're headed.



3003 Larimer Street
Denver, CO 80205

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