The article doesn't really clarify the difference between trailer parks where the residents own the lot and home, just the home, or the landlord owns everything

The article doesn't really clarify the difference between trailer parks where the residents own the lot and home, just the home, or the landlord owns everything. The latter is just renting. The middle one here is not really affordable. Owning the land is ideal, but in most of the country you can't do this in a mobile home park, you need to buy a relatively large lot. At that point you have a lot of the same issues with single family homes in developing area, the infrastructure/future maintenance is more expensive than people expect and eventually that will need to be dealt with.