How about the contractor who didn't payoff the subs or the suppliers then
you found out a month or later that you have a meahanic's lien on your house
even after you paid off the general contractor? Or contractor failed to have
the final permit sign off then years later when you're trying to sell the
house the city demands you to remove all the previous construction. Or you
finally find a few contractors that you like but couple years down the line
they are all gone without a trace like a disappearing act.