What is the cost for plans to get a permit from city of Montreal?
I don't know of an engineer or architect that will even turn on their computer for much less than $500.00. You should check with your local permit office to see if they will accept a DIY hand drawn plan. It may be acceptable for a simple project.
Good luck with it.
We work out of the Toronto area, so this may not be applicable, but you will need independent roof drawings , as well as all exterior elevations showing the new roof line to grade. Structural drawings may be required showing any new point loads, etc. You should be looking at $1500-$2500 , not including permit costs.
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