The 1993 report, New Planning for Ontario, prepared by John Sewell's "Commission on Planning and Development Reform in Ontario" includes a section of "Definitions". Some of these are:

Affordable
Annual cost of housing, including mortgage, principal, and interest payments as amortized over 25 years with a 25 percent down payment, or gross rent, that does not exceed 30 percent of gross annual household income.

Built Heritage
A building, structure, monument, or installation (or a group of them), or remains, associated with architectural, cultural, social, political, economic, or military history.

Intensification
The development of a property or site at a higher density than previously existed. It includes (1) redevelopment, or development within existing communities; (2) infill development, or development on vacant lots or underdeveloped lots within a built-up area; (3) conversion, or the change of use of an existing structure or land use; (4) creation of apartments or other accommodation in houses.