The Manufactured Housing Forums

Is there any way to tell what size a mobile home is by the year, make, and/or serial number?

No but the title and/or the tax records usually have the size. Some serial numbers have the model number coded in them, but few would know all the systems the many manufacturers use. If the home is a 1976 or newer it should have a data plate mounted on the wall somewhere in the home, it will have the size and other important info. Of course you can use the tape measure method used by appraisers to determine size.Good Luck