Here is Andy House, it is 3x7. I actually play tested this one, because everything is so close. Until we get ladders or lofted beds, I am not sure how much smaller we can go!
http://i1371.photobucket.com/albums/ag300/Liz_Amsden/Andy%20House/07-11-15_6-11nbspPM_zpsfnm6fdo9.png
http://i1371.photobucket.com/albums/ag300/Liz_Amsden/Andy%20House/07-11-15_6-12nbspPM-2_zpsybglssdo.png
http://i1371.photobucket.com/albums/ag300/Liz_Amsden/Andy%20House/07-11-15_6-12nbspPM_zpstiycomfu.png