Randy Guthrie



A founding partner of GMA, Randy is a graduate of the University of Toronto and has over 35 years of experience as a licensed architect in Ontario.

His early professional experience was in large-scale commercial and institutional projects but, since 1981, he has focused primarily on the field of housing, lending his creative vision and expertise to award-winning projects ranging from small urban-lot redevelopment to large-scale condominiums and resorts.

Randy has made significant contributions to the development of sustainable residential design in Canada. His involvement in the implementation of the ground-breaking National R2000 Program and subsequent LEED and Energy Star projects has provided him with deep insight and experience in the field of energy conservation as it applies to housing design and construction. Randy is the architect of the largest multi-family R2000 Super Energy Efficient housing project in Canada.

A regular contributor in the field of demonstration housing, Randy has provided the public with opportunities to view new technologies in home construction as well as designs for emerging lifestyle trends and housing sustainability through his involvement with the National Home Show. He is also dedicated to housing equality, lending his expertise to organizations such as Habitat for Humanity and serving on the Ontario Association of Architects’ Roundtable on Affordable Housing.

Randy believes that high-quality living environments are a necessity, that our social and urban fabric is dependent on stable, adaptive and sustainable neighbourhoods, and that architects have a duty to lead the way in ensuring our built environment provides and includes safe and affordable housing for people of all walks of life.


Arthur Muscovitch



Arthur is a founding partner of GMA and has practiced architecture and planning for over 45 years in Canada, the UK, Australia and the USA. He holds a Bachelor of Architecture from the University of Manitoba and a Masters of Urban Planning from the University of Illinois.

Arthur is a visionary leader in urban design having crafted plans for new town centres in Andover, England and Albury-Wodonga, Australia, the urban renewal of Covent Garden, London, a mixed-use community in Houston, Texas and major private sector urban development initiatives from Vancouver Island to Toronto.

Arthur has shared his keen interest, knowledge and expertise with scholars at the University of Birmingham’s Centre for Urban and Regional Studies where he lectured on the landmark Covent Garden plan, and continues to feel strongly the need to plan livable neighbourhoods and communities.

An early proponent of Live-Work designs for city main streets, Arthur has championed the cause of mixed-density residential neighbourhoods and continues to explore emerging house forms such as lowrise stacked housing. He is active in the investigation and application of wood frame and light-weight steel construction technologies for both low- and mid-rise residential buildings and is an advocate for the implementation of LEED technology in the design of healthy, energy efficient living environments.

Arthur enjoys working simultaneously on large-scale urban design projects and individual house design, and as result, has amassed a vast range of professional experience encompassing custom renovations for private clients, multi-storey residential and commercial buildings, resorts, recreation buildings and entire subdivisions.


Bartek Bielny

B.Arch, OAA


Bartek is a graduate of Carlton University in Ottawa.

He joined GMA in 2004 and is the firm’s senior designer and project manager. Bartek oversees all work-in-progress and lends expertise to staff in matters related to project organization and scheduling, design, construction drawing and detailing, and contract administration. His 12 years of hands on experience encompasses everything from single family custom homes to large multi-family residential projects as well as resorts and mixed-use projects. Along with several private residence and small developer clients, he has designed and managed complex projects for Tridel, Minto Communities, York Trafalgar Group, Andrin Homes, Icon Homes, Esquire Homes, Reid’s Heritage Homes, Cook Homes and Kylemore Communities.

Bartek has strong creative and technical skills especially as applies to 4-storey wood-frame construction. He liaises on a regular basis with structural engineers and building code consultants to realize cost effective and energy efficient construction solutions in the rapidly growing medium-density residential market place while maintaining the high-quality design standards that have seen GMA recognized by way of several architectural and urban design awards.


Sherry Yang

B.Arch., Lic. Tech. OAA, LEED AP

Licensed Technologist OAA

Sherry is a graduate of Humber College, Toronto and Kunming University of Science and Technology, China.

She joined GMA in 2012 and has been active on several medium density housing projects by Minto Developments and others, involving site feasibility studies, urban town housing and stacked town houses.

Sherry contributes a wealth of experience gained over the past 13 years in the design and construction of custom homes and renovations, recreational housing and high-rise condominiums. She has also worked on community and recreation centres, as well as institutional, commercial, corporate and industrial projects.


Alfonso Ramirez


Intern Architect

He is a graduate of Carlton University, Ottawa.

Since joining GMA in 2011, Alfonso has been a project manager and designer for niche-market high-end custom and semi-custom homes, condominium townhouses and urban infill stacked townhouses for Kylemore Homes, the Daniels Corporation and Icon Homes. He has also contributed to several site feasibility studies for a range of high-rise residential and commercial uses.

Alfonso contributes 9 experience in residential design and urban planning. Prior to joining GMA, he worked on several residential in-fill projects as well as retirement homes and high-rise luxury condominiums.


Shayla Garrell

Dipl Business Administration-Management, Dipl. Communications-Radio Broadcasting


Shayla comes from a background in radio broadcasting and joined GMA as a part-time receptionist in 2008. She has since changed her focus, is studying business administration at McMaster University and, is GMA’s fulltime manager.

Shayla has superb communication skills and is adept at liaising with clients and consultants on all business matters, including project documentation and time management. She is responsible for the day-to-day operations of GMA and maintaining office protocols and project efficiencies.


Adrian Di Domenico

Dip. Arch. Tech., Registered Building Technician, A.A.T.O.



Chris Rohm

Dip. Arch. Tech