I don't know that many people, but at least 4 people
with relatively newer homes tell me that their
home is still a piece of dirt field on Google map.
And they are all in US. We were in a party in one
of those homes which have finished 4 years ago.
Google bought maps from 3rd parties and they are
not as almighty as you thought.
That's why it is ridiculous for people to
accuse Google earth of leaking "secret" of China, and
it is equally ridiculous to think Google can
do a better job than the military.