There are some pics of buildings as is.
View attachment 580530 the back wall isn't quite as good (I have seen better remain standing but I would rather re do it)
see what you think to these designs: they are not final and some of them have furniture in wrong places (across windows <I copied and pasted from a different design)
edit I also plan to swap the kitchen/dining and living rooms over so the living dining Is in the larger half
View attachment 580520 View attachment 580522 View attachment 580524 View attachment 580526 View attachment 580528
Don't worry about the detail , just get the permission.