Long ago I came across a thread where peope made over different premade houses that weren't occupied. I think it was a challenge or contest... can't find it right now. Otherwise I agree that even if you found downloads of such houses, you shouldn't use them. Recreate them / let them inspire you. Eaxis made a lot of errors when creating the hoods so if you're not familiar with programming, Hoodchecker,
SimPE etc, you can't know which of the houses have actually been lived in as those may contain references to sims