We built a 40x100x12 steel building/farm shop for a customer last year. It was $114,000 all in. Steel building package delivered, insulation, bottom 8' of interior lined with steel, labor, equipment, concrete, electrical, plumbing, overhead doors...
My own stick built 1000 sqft detached garage built to match our house was in the $46/sqft range with a good amount of outside cocnrete. We poured the footings and did the plumbing ourselves. The rest was hired done.
It's not CA so a little off topic but maybe gives guys in the upper midwest an idea of cost if they read this thread.
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