New Modular Construction

[David F.]

I'm considering a new multifamily modular construction in Southern California.  I'm just curious to know, with so much of the construction phase being performed off-site for prefabs as opposed to stick-built properties, why there remains to be such a large discrepancy in new construction cost among locations?  For instance, it's $190/sq ft in SoCal, but in some other places it's $100, absent the cost of the land.

Are there modular builders that offer a more-or-less consistent pricing regardless of location?

Also, who's a recommended modular builder in SoCal?

Thanks!

David