when does it become a home?

today we laid some black slate tile. water has been disconnected for the weekend due to the trenching actions that went on late this week. no water makes laying tile complicated, especially the clean up.
we have a clear view of the new septic equipment from inside the house. some clever shrubbery will be called upon to remedy this odd view.

the two on demand water heaters are waiting for installation. box says they come with remote control! I'm not sure in what sort of situation I need to use a remote for on demand hot water...
and I leave you with a question: when does a building become a home?
we are starting to feel at home when we are there. we have some furniture, a working toilet, stereo etc. but every once in a while we find that our home seems quite public to others
we have a good share of strangers who feel free to just wander around the new house. today we were all at the new house. kids were at a table watching a DVD when they became alarmed that there were people in the back yard looking in at us; the entire back side of the house is glass.
I started to go out there when they announced "we're just checking out your house". I went back in and we all watched them as they spent the next 10 minutes staring back at us. I guess they felt that "checking out your house" is a completely plausible excuse for inviting themselves into our back yard. my wife is a very private person and these situations make her uncomfortable. I think I'll have to get to work on the fencing soon. we'll put up a new NO TRESPASSING sign and maybe a sign with the URL for this blog if anybody really wants to know more about the house.
we enjoy receiving guests and giving tours of the house. but unannounced strangers staring at us from the back yard like we are in a fish bowl was a bit much.