Our philosophy is simple: Our success comes from helping others succeed.

More than 50 years of successful project partnerships showcase our design expertise in comprehensive architecture and engineering. We’re dedicated to creating solutions that work, maintaining long-term partnerships, and retaining talent. GLHN works as a trusted advisor and extension of your staff, leveraging the team’s collective expertise to provide solutions that meet both immediate and long-term future needs.  We’re more than your consultants—we’re your partners.

Culture & Values

GLHN Team Members Raft the Snake River in Jackson WY at the RMA APPA Annual Education Conference

GLHN President Henry Johnstone in the field!

A Rewarding Surprise!

In 2018 the students of College of Architecture Planning & Landscape Architecture (CAPLA) at the University of Arizona surprised GLHN by submitting the Environment & Natural Resources 2 (ENR2) building completed in 2015 for the USGBC Heavy Metal award and won! Joyce Kelly a key team member for the project accepted the award on behalf of GLHN.

GLHN cutting the ribbon on another 50 years of business

An annual tradition of camping and family fun on Mt. Lemmon

Working in the Big Room

As a multidiscipline firm working in a collaborative environment is an essential part of our project planning and company culture

Our Timeline

GLHN is in Phoenix! In 2015 we opened an office in the valley of the sun. Russ Combs, architectural designer, leads the office. We are very proud to bring to the Valley the GLHN culture and professional expertise to such markets as higher education, healthcare and municipalities, just to name a few. GLHN is building staff and if you are interested in learning more please see our careers page.


50th Anniversary!! At the 2013 Annual Open House GLHN celebrated 50 years in business. Beginning with the 3 project in 1963 to over 200 projects and over 60 employees GLHN celebrated its Proud Past and Bright Future. Also at this celebration it was announced leadership would be transitioning and the 3 remaining Principals would be retiring and Henry W. Johnstone would be the incoming President. Photo: Left, Henry Johnstone, Bill Nelson, Roger Harwell, David Grigsby. Holding sign are Directors, Ted Moeller, Rob Lamb, John McGann and Brian Hagedon.


In 2001 the Leadership of GLHN Architects & Engineers, Inc., looking to the future decided to become an ESOP (Employee Stock Option Plan) where the employees would become the owners of GLHN. The ESOP plan was established in 2001 and by 2008 the Trust owned 100% of the stock purchased from David, Roger, and Bill. GLHN is a 100% Employee Owned Firm and members of the local Southern Arizona ESOP Group, “NCEO” and ESOP Association.


January 1998 GLHN purchased our own building at 2939 E. Broadway Blvd. (Broadway & Country Club) putting GLHN on the Sunshine Mile. The two story building provided ample space for our multi-discipline professionals to collaborate and grow.


In 1984, Irvin Finical retired leaving Leon sole owner. Four years later, in 1988, Leon Dombrowski retired. At that time Bill Nelson, mechanical engineer, having worked for the firm since 1970 found partners, David Grigsby, architect, John Lynch, civil engineer, and Roger Harwell, electrical engineer, and purchased Leon’s shares. In 1991 Finical and Dombrowski became GLHN Architects & Engineers, Inc. and moved to a new location at Campbell Plaza.


GLHN Architects & Engineers, Inc. was founded in October of 1963 by Leon Dombrowski, a mechanical engineer, and Irvin Finical, an architect. The company, Finical and Dombrowski, Architects and Engineers, Inc. They started the company with two projects from Davis Monthan Air Force base and a residence project.