We’re sure you don't need us to tell you that the housing market is HOT. In fact, there's a joke in our industry these days that there's little point in putting up "For Sale" signs because they'll just spontaneously combust anyway (just kidding).
We can say seriously, though, that some homes in your area have been sold without even putting up a sign up on the lawn, just because the listing agent already had one or more qualified buyers.