Back in my early days of design school, we were asked as a class to define the Canadian backyard. What should have been a fairly easy task ended up being a discussion on the idea that there really isn’t a definition of our national backyard that worked for everyone.
That said, we all agreed that a fence around the perimeter was pretty standard in almost every urban home. As property owners packed into small spaces like city lots, we feel the need to protect and to maximize our available spaces. Too often neighbours will disagree about property lines and things like overhanging trees or incorrectly built fences.