Its looking pretty sweet! I am going to attempt to build my own foam core house as well and its nice to see how great yours have turned out!
I think this looks great! I started building a foam core house back in 2000 or so. I'm so ashamed that I have like ONE wall. I keep it to show people and laugh. You make me want to revisit the idea.
Hey congrats!! I'll update my post the new picture. It's pretty cool how you have expanded the house, looks fab! Great job.