Yes, a Florida handyman can subcontract work. He is ultimately responsible for how the work turns out and if the homeowner is happy with it.

to complete "in house"

None

Yes, builders typically subcontract their work. You can read more at http://www.allbusiness.com/construction/construction-buildings-residential-building/136361-1.html

It is normal practice for builders to subcontract their work out. This is actually called subcontracting and you can find out more info on it by visiting www.wisegeek.com.

Yes