Learning From Cigarette Burns

Do you by any chance use hacks or mods to allow sims to buy up real estate? i've been meaning to start a neighborhood where all the houses will be owned by one family and then rent it out to all the other sims that live there. i know i came across something like that, but wondered if you were using it as well and maybe help me get the whole thing to work out. i think that would be pretty nifty. :)