The city in which I live, a Sacramento suburb of about 90,000 residents, wants to enact rent control in mobile home parks. It's a working class city, and there are a couple large and several small such parks within the limits.
I'm no economist, but I know what usually happens when government interferes with the market.
Fortunately, as I said, the city is relatively small. Citizens truly do have a voice with the city council. If such local affairs interest you, free registration will get you the story here.