I want to convert a closet into a bathroom. I live in an old high rise (circa 1925) with stacked plumbing and cement subfloors. The closet backs up to another bathroom, so I can tap into the sewage and feed pipes. The question is how to install the toilet. There is not a crawl space below my floor and I cannot break into the neighbors closet ceiling (which is below me). Is there anyway to raise the bed of the toilet to allow for the toilet's closet bend? I would prefer not having to raise all of the floor.