The week I spent trying to determine if we should sink our living room down a couple of feet, I really felt the limitations of paper floorplans and a ruler. At the same time we were debating tile versus polished concrete, and playing around with the room visualizers from some of the big tile suppliers. Nothing was quite like our house though. If only there was some way to really see how the house will look, in 3-D. That would make all these sorts of decisions so much easier. Our architects don't have a huge appetite to do this work and I suspect as a result it'd be expensive and slow. There is, of course, CAD software that just anyone can buy. And I have a computer, hands and eyes - how hard can it be? I downloaded an inexpensive, favourably reviewed kit, and soon found out. Four or five hours in I had a 3-D model of our ground floor. I put some tile down, added a couple of people and a cat, and felt very pleased with my work. The living and dining room looked about righ...