I've had the warehouse that someone made for quite some time, it even has the bonus area that thug 2 introduced into it, I forgot the name of the guy who made it and he made it before all the dlc, so the taxi part is just a few colored ledges, but I can fix that and upload it, if you want?
I've wanted to make surburbia in thps3 as well, I just couldn't scale it right, doing the culdesac and terrain would be hard, that level is so bumpy, haha.