- Alterra Developments
- Baif Developments Limited
- Brookfield Homes (Ontario) Limited
- Fieldgate Developments
- First Professional Management Inc.
- H&R Developments
- Landmart Homes
- Landtactix Inc./Sorbara Group
- Lebovic Enterprises
- Mattamy Homes
- Metrontario Group
- Monarch Construction Limited
- Senator Homes
- The Remington Group
- Trinison Management Corp.
- Walker Community Development Corporation
- Wycliffe Group