I recall reading about either a lawsuit or a dispute 4–5 years ago between the City and a private operator that had offered to relocate and accommodate everyone in this trailer park on his property at his own cost in exchange for the right to purchase the land at market price. It was in the Herald. I'll see if I can find a link.
Here's one of them:
http://www2.canada.com/calgaryherald...c-dff3136e9250