Architecture - adding a room

I have an older (1978) mobile home in a beautiful setting, we bought the place about a year ago with the thought of adding to it or pulling it down and getting a new one on the land, it seems that we must go for the first option as we cannot afford a new home yet, so in the meantime i was thinking of adding a room across the back of the property, we have a double wide (24 ft across) and i was thinking of building a room 12 ft out from the original outside wall, ie' adding a 12ft deep room across the entire 24ft width, my question is ........
is it possible or allowed to add a traditional stick built room (on piers) to an existing mobile home on a permanent foundation? any thoughts, hints, tips?

Local zoning and codes have the last say as to what is allowed or not.

The 2 most important aspects of adding a room onto a MH is the foundation and sealing the roof where the addition and MH meet.

I prefer to use a concrete footer and then either block up the perimeter or use block piers. There are some who have successfully used PT 4x4 or 6x6 posts - these usually require a footer or some solid masonary to keep them from sinking.

Depending on the type of roof currently on the MH, connecting the addition so there is no water seepage can be the most challenging aspect. Unless you are reroofing everything you will need flashing that can be sealed effectively.

how about putting a second MH next to it ?

might be the cheapest solution , I see it done a lot with construction trailers