Manufactured Homes are some of the most diverse forms of housing that you can buy. Between the manufacturers we represent, we have tens of different home "lines", hundreds of floorplans, and thousands and thousands of different combinations of options. Anything found in a modern stick built home today can be had in an even more up to date mobile home. So, it should come as no surprise that mobile homes can come in a huge variety of sizes.
At the very smallest end, we have what are called Tiny Homes. Although the tiny home craze has only gotten into full swing recently, the manufactured home industry has been building uncoded "homes" for some time now. Since they are under 400 square feet (the legal minimum to be considered a habitable home), they cannot actually be considered a livable home and are insetad classed as sheds, or simply uncoded structures. Given their size, most of them can even be hauled with a typical truck, no specialty transportation company needed (and no requirement to pull permits to haul the load).
A variation on the tiny home is the Park Model. These are classified as RV's and can be lived in for up to 6 months of the year. A first, obvious difference between the two is that a Park Model usually has a loft. This is extra vertical height that can be used for storage, to relax, or as an extra bed for the grandkids. Most park model homes are only 1 bedroom, anything more than that would be quite unusual although they do exist.
The mainstay of the manufactured home industry is certainly the unpretentious and oft-under appreciated Single Wide. This is the perfect form factor for a mobile home, it's long length and narrow width being perfect to haul down a highway. As with any HUD home, they are always single story and your most common arrangment will have 3 bedrooms and 2 bathrooms. By far, the vast majority of our single wide floorplans have 3 bedrooms and 2 bathrooms. These are at a minimum 400 square feet, but often much larger. They can go up to 1,200 feet, with a 16 x 80 form factor. 16 feet is the maximum width that almost all 48 contigous states enforce for their single wide mobile homes that is allowed to travel down a highway. Of course, everything is bigger in Texas, and the maximum width for a single wide there is 18 feet (which if you've seen in person, is huge, those 2 feet make a big difference)
Coming after a single wide is the double wide. These are always made up of 2 sections, with each section being similar to a single wide in dimensions but different in that one side of the structure is blank. There will be no wall, and it'll be exposed to the elements which allows the installer to join the 2 sections and make a whole structure. As such, the width of a double wide is pretty self-explanatory. It's double that of a single wide. So yes, in Texas you can have a home that is 36 feet wide, almost the length of a smaller home! Although Double Wides are much larger, they don't have as many bedrooms as you may think. A very typical size for a Double Wide is 3 bedrooms and 2 bathrooms. This gives the resident living space, such as a generous living room or a really well portioned kitchen. If you're looking for an affordable living option and are not necessarilly on a budget, you might want to consider the livability that a double wide offers.
Finally, there are Modular Homes. These are usually no different in size from Double Wides except the code that they adhere to is different. A Double Wide is built to HUD code which is a national standard, whereas a Modular Home is built to the local building code and should be in line with all of their particular regulations. What this means, however, is that they can be more than just the typical "2 box". A modular home can be enormous, with an infinite number of boxes available. There have been mansions built with 20+ modular sections stacked on top of each other. The size? Virtually limitless, or as much as your local building department will allow.