There is a hugh difference between a modular home and a mobile home. A modular home is constructed with the same materials as a convential site bult home, except the modular is built in a climate controlled factory. Modulars are built to federal and state standards. They are also built to be transported.
We bought a 2 story Modular home in 1985 for $50.000. We bought a 5 acre lot $17,000 , to put the house on. We did our own foundation to their specs, trimmed and finished it out ourselves. Then in later years added 2 hugh additions to the house and a pool.
Loved the house and maintained it properly.
House was just listed for $480,000.00, You can't get that with a mobile home.