I don't know if it is always the case, Go-tazz. It is just that when I went to look up the address of an old work friend who has just built in a new sub division, she wasn't on google maps but I did find it on whereis.

My children and their friends have all moved further out into newish areas and it can be a real pain trying to find some addresses, they seem to take a while to get onto the maps, though you would think the forward planning for roads would have been known well before any houses were there.