I've been looking for a mod to allow me to rebuild wings of my house, I picked the wrong wing and now want to change it. I decided to look into the scripts and files myself because a total lack of information it seems, seeing if it could be done by console. Sadly the system uses inventory items and arrayed lists to enable/disable parts of the house based on what you've built. It's quite hackish/ingenious way of overcoming the game's lack of features for player homes. I'm surprised no-one has made a mod to change/demolish parts of the house, it's certainly possible, as long as you take into account that your spouse/children aren't inside as you would need to re-evaluate the rules for spouse/child habitation. And also remember to change nav planes/porch railings/bridges. If there isn't anyone doing so already, I wonder whether I should, as a way of it becoming my first mod.