Is there a specific place where I can find demolition permits for properties?

[ac3r]

I'm trying to help out a friend who is an artist. They'd like to salvage old building materials from properties undergoing demolition. Does anyone know if there is a specific place on any of the city websites where I can find that sort of information out? They'd like to find what properties are set to be demolished so that they can then contact the city or property owner to inquire about obtaining some of the old waste material. Searching the city websites is just giving me generic links to information about obtaining permits, but I'd just like to know if the city lists properties that are to be demolished.