Key Employees and Affiliates

Dustin Curtis, Principal Architect

Dustin Curtis received his Bachelor of Architecture in 1983 from Arizona State University. Upon graduation he gained a wide variety of experience with several architectural firms in the Phoenix area. He started his own firm, Curtis Architecture in 1993. In the nearly 20 years as principal of his firm Dustin has expanded his reach nationally by becoming NCARB certified and obtaining registrations in 40 states and the District of Columbia. During that time he has overseen hundreds of projects in a diverse range of building types, including food service, hospitality, retail, medical, senior living, mixed use and historic preservation/renovation.


In 2009, to sustain and better manage the growth in his architecture practice, Dustin formed One Architecture, PLC to oversee the day-to-day responsibilities of nearly a dozen other small firms throughout the United States.


Dustin oversees this unique business model for architects by managing the legal, accounting, marketing and scheduling for all affiliates so they may concentrate on their top priority of satisfying clients by providing solid architectural services. The model also allows for better management of combined resources, effectively evening out the economic ups and downs so inherent in the profession.


Dustin has lived in Phoenix, Arizona for over 35 years.

Donald R. Brubaker, Jr., Principal Architect

Don Brubaker was a pricipal of Gilleland Brubaker Architects from 1995 to 2013. He started with the firm, formally known as Gilleland Hunt Architects in 1980 while studying architecture as an undergraduate at Arizona State University, and worked for the firm full time since graduation in 1983. Early on Don exhibited exceptional design talent as well as organizational and communication skills, which quickly advanced him to positions of responsibility and leadership.


Don is a registered architect in Arizona. His three decades of experience in the profession has earned him the respect of educational leaders throughout the state of Arizona. He has overseen the design and construction of a dozen high schools and middle schools, nearly 50 elementary schools and scores of other educational projects on elementary, high school and junior college campuses.


Adding Don's unique skill set is a logical step in the continuity, strength, and commitment to the future of ONE! As a principal architect he oversees the cultivation of new prospective national clients and the maintaining of old ones. He brings stability to Team ONE! by helping our affiliates create strong ties within their own communities, keeping them current with continuing education and providing a standard of quality and consistency they can all abide by.

Randy Belling, Director of Business Development/Marketing

Randy Belling got his start in the construction side of the industry where he acquired a fundamental understanding of how buildings go together as well as a strong work ethic. After many years he found he had a knack for and enjoyed the architectural and engineering side of the industry and switched sides. Now with over 30 years experience in the combined construction and design industries he provides a unique hands on perspective to business development.


Randy focuses on clients in the retail sector with special attention to national roll outs and quick serve restaurants. He understands that this industry requires attention to detail, speed and the management of many moving parts and conveys that to existing and potential clients he comes in contact with. His direct experience includes work for Burger King, Hardee's and YUM brand restaurants as well as several national retail chains.


Education:   Construction Management, Southwestern Illinois College

                  ITT Technical Institute, Applied Science Degree in computer aided drafting and design.


Randy resides in Edwardsville, Illinois, a suburb of St. Louis, Missouri.

Shannon Downey, Interior Design (Affiliate)

Shannon Downey specializes in the Interior Design facet of each project.  She has over 20 years of experience in programming, space planning, interior detailing, as well as the selection of interior finishes, materials and furniture. In addition to her Interior Design skills, Shannon has an extensive background in project management including construction administration.


  • Bachelor of Interior Design, Louisiana State University, 1993
  • National Council for Interior Design Qualifications, NCIDQ


Shannon is a life long resident of New Orleans, Louisiana and represnts One Architecture in the southern states.

Silvia C. Marquart Huckaby, Project Manager (Affiliate)

SilviaMs Marquart is One Architecture's resident Senior Living expert having worked on more than 40 such projects over the past ten years of her career. She has been involved in the development of several types of senior living facilities including Assisted Living, Skilled Nursing and Memory Care (Alzheimer's). She also works on our hospitality, medical and educational teams.


Silvia was born and raised in Sao Paulo, Brazil, has traveled the world and is fluent in Portuguese, French and English. She received her Bachelor in Architecture and Urbanism in 1997 from Centro Universitario Moura Lacerda, Ribeirao Preto, SP, Brazil. She is a licensed architect and urbanist in Brazil and is registered through C.R.E.A. (Regional Engineering, Architecture and Agronomy Council).


Silvia currently resides in Vancouver, Washington, a suburb of Portland, Oregon and is the main contact for ONE! projects in the northwestern United States and Alaska.