is that pretty much the rule of thumb? 1 inch equals 1 foot?
1"=1' is 1:12 which is standard scale for doll houses. So if you buy a kit, your stuck with that scale. If you scratch build, obviously you can do what ever you want.
When I build from scratch, I convert real measurements to inches & then devide by 10. working in metric is easier for me but 6' = 72" = 7.2" at 10 scale. I don't know if you can get a decimal ruler/scale so I usually round things, so 7.2" could be 7-1/4". I work in AutoCAD so redesigning like this doesn't create problems. Also, Midwest Basswood strips 3/16x3/8 inch are very close to a 10 scale 2x4.
A lot of 1/12 scale doll house stuff will work. I have a midwest canoe kit & it'll pass for 1/10.
Google "real good toys" for some nice doll house kits. they make log cabins.
Also, check out large scale train forums, building sections.
Here is a thread I started asking some noob questions. there are links to some build threads using PVC Sintra foam board for outdoor buildings.
1/10 scale garage - myLargescale.com - Forums - G Scale Forums - Buildings