- City of Toronto, Facilities & Real Estate
- City of Toronto, Facilities & Operations
- City of Toronto, Parks, Forestry & Recreation
- City of Toronto, Homes for The Aged
- Ministry of Municipal Affairs & Housing
- Toronto Community Housing Corporation
- Durham Regional Local Housing Corporation
- The Regional Municipality of Durham
- Region of Durham, Public Works
- The Regional Municipality of York
- Toronto Hydro
- City of Mississauga, Facilities & Property Management
- City of Mississauga, Facilities Planning & Development
- Simcoe County Housing Corporation
- The Royal Canadian Legion
- Toronto District School Board
- C3 Harrell Group
- Granada Construction Limited
- Cosmopolitan Homes
- Noik Homes Ltd.
- Jay Rosen Construction
- Ria Construction & Home Improvements Ltd.
- Carick Home Improvements
- Burlmann Construction Corporation
- Tenen Management Co.
- Norstar Building Corporation
- Nova Services Group Inc.
- Johnson Paterson Inc.