Since manufactured homes on leased land, fall under the guidelines of the Department of Motor Vehicles there is no MLS data base to go to for comparable sales. You can go to NADA to try to get what that home should be worth. Make sure that you have the exact make, model, year and length. If this home is in a particular park that has on site sale and a web site, you can go to that site and see what similar homes are listed at, as far as past sales, that's much more difficult. The NADA will give you prices of past sales, there is a website NADA.com and you have to subscribe to it.