I would hope not. Typically modular homes are a little higher end in the initial build. The panels will be tighter fitting, more insulation, etc. On This Old House, a lot of additions they do anymore are modular, as in, they will build the floors, walls, and roof in a factory and ship them to the house to be installed. It's considered green. Most people who have an actual modular home would guffaw at anyone insinuating they have a standard build home.