At least some consideration should be given to where they are allowed to be erected.
I disagree on both counts. Hundreds of thousands of people live in mobile homes without ill effect, and they're able to live in a great home at an affordable price. Ban them, and you've created severe hardship for way, way too many people and further screwed up an already screwed up housing market. As for cherry-picking where they're allowed to be erected, Florida's mild climate makes it an idea place for mobile homes. Let people be responsible for their own decisions -- they don't need Big Brother telling them where and how they can live in mobile homes.