Ok, so I found this software online. I was looking for something a little more robust than, say, the Sims 2, for floorplan planning. (The Sims 2 has the unfortunate downsides of (1) not having all the basic objects, (2) issues of scale and (3) you keep playing instead of building. Especially if you accidentally get your Sim knocked up again.)
So after searching Google, this is what I turned up. Most people would really only need it the seven days, but I have sketchbooks full of ideas for stuff, including houses I might one day build. In my world where basic physics do not apply.
Anyway, I thought this was cool. And so I present a basically-scale version of my floorplan, with some questionable bits because they don’t give you closet and bathroom dimensions.abe