The "Look of New England" designs were built in the Fallingbrook area of Orleans and very few were actually built. The houses are quite narrow and have protruding garages, a common design of the time. In more recent years builders have shied away from these types of houses (sometimes called "snout houses"), in favour of houses where the garages are recessed in to the facade.
First introduced in the early 1970s, the ForestWood Collection took on many incarnations over the years. Here are the most recent plans (c. 1999) in the collection built by Costain before they ceased operations in Ottawa. These were built in Fallingbrook.
The Heritage Hills neighbourhood in Kanata was the last project Coscan built in Ottawa:
The Carriage Homes in Heritage Hills are a modern take on the linked townhouses first built by Costain in the 1970s in Blackburn Hamlet and Convent Glen.
After the millennium Coscan ceased operations in Ottawa, although I am not sure why. The company continues to build in the Toronto area under the name Brookfield Homes, and is part of a larger company that builds across North America.