This site has tons of blueprints and pictures of home designs. Great reference for anyone wanting to do realistic environment work. http://www.design-house.com/
a little trick to make things look more realistic and a little higher poly is to champher some of the hard edges around the areas that are noticed more.
I don’t know how realistic or how detailed you plan to make this, but here’s some additional texture and structure reference I carpeted at the US Midway.