In my condo complex the County has fined unit owners and the condo for not pulling permits for air conditioning installations, and remodelling projects. In Miami Dade County registered trade people and businesses pull those permits when they start a project. If they don't get a permit and the condo is charged then it is the contractor who is responsible for the fine. Since unlicensed and/or illegals can't get the permits the condo security will not allow any unlicensed people in to work in the complex. I am sure other complexes have run into the same situations. This is not that large scale but a start.