It will be difficult for you to find insurance for it.
Almost all home and auto insurers will insure a mobile home, in Arizona and all 50 states. There are companies that specialize in this type of insurance though. One large company that insures only mobile homes is Manufactured Housing Insurance Services.
As cheaper housing.
Certainly there are several insurance companies that provide coverage for mobile homes in a park or on private property. The key is who owns the mobile home. The owner is the person who would be able to get a policy on the home.
My mobile home is a 1981. Homes built after 1975 were subject to HUD rules and construction regulations, so are better in many ways. -Parks will allow older homes to exist if they are well kept, but will not allow pre-1975 homes to be moved into their property. Many insurance companies will not insure pre-1975 homes. Many movers will not move pre-1975 mobile homes.
A mobile home is a large unit pre-built in a factory and taken on wheels to a site. That is the only sense that it is "mobile". - It is possible, but not easy to put them on wheels and move them.
Most mobile homes do not need to be separated to move. They are built on a movable frame.
Most lenders and insurers are very reluctant to have anything to do with mobile homes built before 1975. -But keep looking, you may be lucky.
I believe Modular Homes are built in sections while a mobile home is one piece. Mobile homes probably move more easily. Modular Home = Factory-built housing with onsite assembly and some onsite construction that is built to meet state and local codes and does not have a chassis. Mobile Home = Trailer or trailer-like dwelling unit (has a chassis and removable wheels) manufactured in a factory and designed to be transported to a site and semipermanently attached. The preferred industry term is manufactured housing.
The Empire State Building is not built on wheels. It is not a gigantic mobile home. It's an office building.
A motor home is a large vehicle built as a travelling home. Some are even conversions from a bus. They are not meant to be a static home, although sometimes used as that. - A mobile home is a home built in a shop on a heavy trailer frame, then pulled to a pad and jacked up with wheels off, set on concrete blocks. They have no motive power.
A modular laboratory is like a modular home or a mobile home...It is a pre built laboratory which can also be portable if required.