This may have been discussed already, so, if so, I apologize.
Anyway, in reviewing the available videos, I think I've identified our pre-war house from the Vault 111 over-look of the neighborhood, as well as the escape path followed to get to the vault.
Here's the view from the vault, overlooking the neighborhood with our house pointed out and escape path.
http://i.imgur.com/sDqH4J5.jpg
Note the 2-story house across the street from it, as well as the house next to that, at the bend of the escape path with the collapsed roof.
Now, closer, as you come back to the neighborhood after exiting the vault ...
http://i.imgur.com/Xr0qc4S.jpg
The white arrows point to the house with collapsed roof noted earlier. The orange arrow is the 2-storied house across street from our house. The Yellow arrow points out Cogsworth and our house.
Here's the pre-war view of the house across the street
http://i.imgur.com/XxnuLND.jpg
Judging from the E3 video ... https://youtu.be/1t_YHgo_HN4
Once the sirens happen, you exit your house with your spouse and child, jog briefly West, turn North to the forest path with the creek, and circle back around up hill to the Vault 111 location.
There's more, like, during the settlement building section, where an NPC is working on a garden, the white observation pod for the Vault 111 entrance can be seen up on an overlooking hill.
EDIT: With the neighborhood just North of Concord, as well as a bridge over some water exiting the neighborhood to the South, between the neighborhood and Concord, I suspect the Vault 111 location is in Minute Man National Park area, or somewhere close by in the wooded areas.
I can't find a group of Houses on the real life map that really match the game neighborhood.
https://www.google.com/maps/place/Minute+Man+National+Historical+Park+-+North+Bridge/@42.4666894,-71.3436478,14z/data=http://forums.bethsoft.com/topic/1528022-i-can-see-my-house-from-here/!4m2!3m1!1s0x0000000000000000:0x70924b001f6c7b2f
Thoughts?
Thanks!