Mobile homes always depreciate,just like cars. it is more difficult to get financing for them for this reason.

Yes, and one reason is mobile (or manufactured homes) have a higher rate of foreclosure then site built homes, which hurts appreciation of all the manufactured/mobile homes in the area. While you'll get more house for the money with a manufactured home, you may see no appreciation, and might even see depreciation in the value of the property.

This is definitely true, and is doesn't matter about the foundation. If you are looking for an investment in your real estate purchase, then I highly suggest you buy a site built home. Also, it is much more difficult to get financing on a mobile home these days. I hope I am answering your questions and helping you out. Feel free to let me know what else I can do to help. Thanks!