In more rural settings, a decent doublewide with a permanent foundation on small acreage will appreciate like a site built house and will sell as well as a site built house if it’s been well kept up and is in a reasonably desirable location.
On the other hand, single wides on rented lots in mobile home parks are highly prone to repossession. They just don’t sell worth a hoot used, and have to be heavily discounted, which means that the people holding the notes on them have negative equity for a very long time. They’re already not the most savvy people with money and they’re already very likely to have marginal credit. So, they let it go back to the finance company.
I live in a manufactured home, have done since 1996, rural area with acreage, barn, horses, etc. Really have had no complaints about it.
After my recent divorce and in preparation for retirement, I am looking for a small, cheap place with a little land. A mobile home would not be a disqualification, but things would have to be very desperate for me to live in a mobile home park.