It may not be required in the city bylaws, but it would be good practice if developers had to protect the trees on both sides of the street during development. During this Westrich project, two trees have been impacted. This one that just got removed had a pretty good wedge into it as a result of construction. The other will be ok, but it would help if they had protection.
Prior to construction you have to provide an arborist report for the development, including a tree protection plan that is quite comprehensive and commit to a lot of requirements by the City.