Try Custom Sims 3 http://customsims3.com/forums/thread-53.html. Jynx has both doors and rugs that work in either community or residential lots. After checking myself, make sure you read carefully because it looks as if Timothy RedMist gave you a direct link to the same thing:
"20 Rabbit Hole Replacements !
In the form of re-colorable CASt friendly doors, and rugs that allow you to build your own business buildings, strip malls or stand alone buildings!"