Note – if you do a hillside house, on caissons, like shown, you’ll need a soils report (more $$$) and geotechnical to “bless the dirt” during the drilling. Hillside building (vs a level building site) definitely adds some issues.
And if you’re within San Diego and doing hillside work you might have to address the storm water runnoff from the roof… That’s another bill – civil engineering.
Yes, engineering can get expensive and is not included in the $200-230/sf.
I was surprised how little the surface materials (flooring, countertops, bathroom tile) impacted the construction price. And how much engineering did.
