A friend pointed out some laser cut wooden buildings at Cost Plus, so I got some pictures of them with figures for scale.
The 2 buildings with the less steep roofs have windows on their sides, the other doesn't.
The figures are a GW beastman (primed black), a Reaper Bones barbarian (probably bigger than the normal human) & a dwarf of unknown origin.
Unfortunately, they don't seem to fit well with 28mm figures, but would certainly work with 20mm & maybe 15mm. It has been suggested though that by somehow extending the walls of the buildings to make the overall building taller, & replace the door, they might pass better for 28mm.
The buildings are $9 each, so maybe a bit expensive to experiment with, but I'll certainly be looking for a post-xmas sale.