Some of my long-time readers may remember that I did a series of posts on Costain a few years ago. For some reason, a few of my older posts have vanished from my blog - for reasons unknown to me. So, I have re-created this post on the builder Costain due to interest from some of my readers. On the positive side, I have been able to get my hot little paws on some new floor plans and marketing material, so there is more material in this post compared to the original (now lost) post! In the mid-1960s the builder Costain (originally from England, but with an impressive global portfolio) came to Ottawa to develop a new hamlet in the eastern greenbelt called Blackburn Hamlet.  Today Blackburn Hamlet is very lush with mature trees and extensive parkland, surrounded by the NCC Greenbelt. The west side of Blackburn Hamlet has 3 neighbourhoods separated by parkland, Westpark, Southpark and Centrepark. The Northpark and Eastpark n...