Building on the method for determining the urban extent described in GCUT Paper no. 1, A guide for deriving a consolidated built-up urban area for the Toronto metropolitan region using satellite imagery, this paper uses Statistics Canada housing data to determine the number of residential units created within the urbanized area of municipalities in the Greater Golden Horseshoe between 1991 and 2001. This number is compared to the total number of residential units created throughout the entire municipality (including greenfield development) to derive the residential intensification rate for that 10-year period.