Well I suppose Autocad or a similar prog is the best at that sort of modelling but they're very expensive, cos they're aimed at industry. Almost any 3d modeller will model a house why not try Wings3d (link above)it's probably the easiest modeller to learn and fun to use. There is at least one app that is supposed to create a model from pictures, I can't remember the name and don't know how well it works. Baz