ERTL makes a farm house set that is still available for a reasonable price on Ebay. It is perfectly scaled for 28mm figures. My daughter and I just finished painting and assembling it. I modified it a bit by cutting off some of the tabs that hold it together. This allows the second floor to come off without much of a fight. I used a piece of cardboard to add a second floor inside.
This is what it looks like in the box. The kit is hard plastic and assembles easily.