Designing a Container Home in 3D

Here's what I've completed thus far. Coming from my sketches, it's progressed quite a bit while maintaining the original design. Don't ask me how a staircase is fitting inside the first floor, I can only guess it's a spiral staircase behind that wall. *wink wink* There are external stairs to the roof at any rate...
Yet to come: Shading, lighting, scenery, and animation!