What's so difficult about this house-building thing?

Here's one I made earlier...

Seriously, though, having been treated as non-existent by two companies that claim to start with a blank sheet of paper and join the design and build together, and not wanting to spend several thousand pounds and weeks on getting an architect simply on to the same page as us, I've taken up pen and paper and begun sketching a possible house for the site as a starter for discussion. 

That led to a rather complicated arrangement of double-height reception space combined with a balcony off the master suite (you know it'll all go when I see the figures, don't you?) which I had to prove to myself in three dimensions.  Hence, Lego!

Looks very much like I'll be taking the sketches, though possibly not the model, to Knott for further development.  I'm sticking with the colour scheme, though...