Trailer parks operate a lot like co-op complexes. You own the mobile home, but rent the land in the park. There are monthly association fees, which cover water, septic, rubbish removal, and more. “These are nice, tight-knit neighborhoods". The Massasoit Hills Trailer Park in Wellfleet is located just steps from the Mass Audubon’s Wellfleet Bay Wildlife Sanctuary. Prices range from $40,000 to $200,000, and mobile homes can be used year-round. Rentals may be restricted. Weekly rentals are often not permitted.