Government:
- City of Orillia
- City of Hamilton
- City of Mississauga
- City of Oshawa
- City of Toronto
- Hamilton Harbour Commissioners
- Regional Municipality of York
- Regional Municipality of Halton
- Town of Dundas
- Town of Flamborough
- Town of Georgina
- Town of Whitchurch-Stouffville
Property Owners / Developers:
- Brookfield Homes
- Campus Living Centres
- Cresford Developments
- Crombie Properties
- Edilcan Development Corporation
- Empire Communities
- First Capital Asset Management Corporation
- Frisina Construction
- Glen Corporation
- Humbold Properties
- Kingsberg Monetary
- Magna International Inc.
- Minto Communities
- Mountainview Homes
- Osmington Inc.
- Sunlife Assurance Company of Canada
- Trivest Development Group
Industrial / Commerical / Institutional:
- Atlantic Packaging
- Bond Place Hotel
- Budget Rent A Car
- Cadbury Adams Canada Inc.
- Cosmetic Surgery Hospital
- George Brown College
- Green Storage
- Migson Public Storage
- Mondelez Canada Inc./Kraft Canada Inc.
- Lafarge Canada Inc.
- Oxford Properties Group
- Public Storage
- Rabba Fine Foods
- Redpath Sugars
- Sheridan College
- TDL Group Ltd. (Tim Horton’s)
- The National Golf Club
- The Shouldice Hospital
- Toronto District School Board
- Toronto Film Studios
- Trull Funeral Homes
- University of Toronto
- York Region Roman Catholic Separate School Board
Resident / Ratepayer Associations:
- Coalition of Ratepayers Association, Mississauga
- Ontario Historical Society
- North Hill District Homeowners Association, Toronto
- West Woodbridge Homeowners Association, Vaughan
- Elgin Lowther Residents Association, Toronto
- Rosedale Residents Association, Toronto
- York Mills Ratepayers Association, Toronto
- West Oro Residents Association, Simcoe County