If i buy land in CA with only a well and then place a solar trailer-home on it, could i reappraise it for?

any equity? uming it is desirable land with a beautiful view visible from a very stylish "home" and discrete "trailer." Also uming much landscaping and road work was I'm proved and the trailer included all utilities and appliances and solar system and back up generator and shed, etc. Will the bank give me equity, and if so, how much less than the identicle house on a perminent foundation?