Doesnt matter if a business was built yesterday, they still have to pay for it to be demolished. Depending on which option goes ahead, yes they will be demolishing parts of the Goulet/Doucette neighbourhood.
Options 1-4 have most of the house west of the Seine being demolished. While option 5 has most of the houses and businesses east of the Seine being demolished. So guaranteed someones house is getting torn down. I'm sure there will be a slightly different option put forward at the next open house.
Not trying to be a dick, just callin em as I see's em. Open house boards are
here, if you haven't had a chance to take a look.