Modern Architecture Timeline

May 8, 2013
Paragon Real Estate Group

Our story has been unfolding for fifty years. The OZ name is taken from the initials of two of our founding Principals, Tom Obermeier and Alan Zeigel. Both received their architectural degrees from CU in Boulder and worked together in the same office as architects early in their careers. They went on to found separate firms, but they remained friends.

The late 80s were difficult times in Denver, and architectural firms were struggling. 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…here are some highlights from the story of OZ.


On Valentine’s Day, Art Everett and Alan Zeigel (the Z in OZ) open Everett Zeigel in Boulder, Colorado.

The Bank of Boulder is designed by Everett Zeigel, with a design vocabulary 25 years ahead of its time.

Tom Obermeier (the O in OZ), John McMorren and Eliot Goss open McOG in Denver.

The first ski days, a team-building tradition that has continued over the years.


Everett Zeigel participates in the design of the Pearl Street Mall, putting the firm on the national map as visionary urban planners and designers.

McOG designs its first major building in downtown Denver, the Spectrum Building.


Everett Zeigel revitalizes the Chatauqua Auditorium and wins the Western Mountain Region AIA Firm of the Year Award.

Everett Zeigel purchases its first computer for DataCAD.

McOG lands its first Air Force Academy contract, launching a valued client relationship that continues today.

Everett Zeigel and McOG join forces as OZ Architecture. The combined firm immediately wins its first National Park Service contract, leading to a series of landmark projects for NPS.

OZ begins its first interior design project for the Air Force Academy, officially adding interior design to our core services.

Teamed with MBT, OZ designs the Molecular, Cellular and Developmental Biology Laboratory on the University of Colorado campus, one of our first major Higher Education projects.

OZ designs Celestial Seasoning’s Headquarters in Boulder.

The National Park Service hires OZ to develop its national standards for sustainable design.


OZ designs the first LEED certified hospital in the U.S. — Boulder Community Foothills Hospital.

OZ offices in a redesigned former motorcycle shop.

OZ is the Master Architect for Colorado’s Snowmass Base Village, creating one of the largest fully planned core communities in the state.

OZ wins the AIA Firm of the Year Award, Colorado Chapter.

OZ designs Waterside Lofts, a groundbreaking urban living complex in downtown Denver.

OZ designs the Prairie Learning Center at the Neal Smith Wildlife Refuge, 8, 000 acres of restored native tall-grass prairie in Iowa.

OZ designs the Blair-Caldwell African-American Library, Mayor Wellington Webb’s legacy to the City of Denver.

OZ wins the Western Mountain Region AIA Firm of the Year Award.

OZ designs The Broadmoor West Residence, the first of several phases of planned luxury residential housing.

OZ designs Florida’s Grand Sandestin to reflect Southern elegance in a modern resort setting.

OZ designs Northstar Village in Lake Tahoe, the first LEED certified resort in the U.S.


OZ master plans the City of Kigali, Rwanda, Africa.

OZ wins AIA Firm of the Year, North Colorado Chapter

OZ’s Colorado Springs office opens.

100+ hospitality/resort projects are on the boards at OZ.

CirclePoint Corporate Center completes the Westminster Promenade as a new center for the City of Westminster.

The Nature Conservancy headquarters, the commercial centerpiece of the Iron Flats mixed-use development in Boulder.

OZ begins design for Zhangbei Resort in Jilin Province, our first project in China.

OZ partners in the design of the Van Cise-Simonet Detention Center, part of Denver’s Civic Center expansion.

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