im in need of sub contractors, for a plan in mentone ca. any help

[John Medeiros]

hello everyone, i own a property in mentone ca. and Im looking at build a duplex behind of small house on the lot. would like to build three units but the property is on ceptic tank, which can be very expensive to add more than one tank . any idea what is the cost per sqf. this will be basic construction 2 bed.x1bath. any help will be appreciated.