ready to move in(He built himself a huge mansion – an entire company could live there and not see each other. And then he asked me to build a "ready to move in" cottage for his mother-in-law. I'll be damned! Rich people have the strangest habits!berdy)
turnkey(My understanding is that such "package deals" are known today as "turnkey" offers, meaning that one need only "turn the key" in the lock to be up and running whatever one is running.)