It's a bit weird to size such large part of the Fallout land with entrepreneur skills that requires bulldozers, lifting-cranes and more.
If there was a quest in the sanctuary and the group leader would offer something for building a fence around the whole settlement, it would have better proportion. But the settlers are just tools. You can in a minute destroy all their beds with your magic wand and without troubling their minds.
There are no rival settlements, you are just a bazooka entrepreneur that arives 200 years from the past and quickly erects cities all around with a magic wand.
In the old days houses looked much more individual, because each family usually built its own and could decorate with their own beliefs. It's only nowadays where individuals only find room to build their own on facebook that's got lots of space, while their settlements is sized by a few entrepreneurs, why everything looks so much more alike, since the few entrepreneur-brains only got so much capacity to decorate. If stuff in the modern settlements didn't have signs and addresses, it would be impossible to navigate, since most built look alike.
Just how do you explain entrepreneur powers in a post-apocalyptic world, when you just arived 200 years from the past and haven't got a clue yet to anything?