Too many times I see home improvements made and the old plumbing pipes are ignored. If you see something that doesn’t look right to you it most likely should be observed by your local plumber. Sometimes being observant can save you a lot of money. For instance I recently had a situation where a flooring contractor replaced a floor in a bathroom and the closet flange (this is the pipe that your toilet sits on) ended up being too high. If the toilet was pulled by a plumber this would have been addressed before it be came an issue. Look, no one wants to pull up a brand new floor to fix an issue that should have been addressed prior too it being installed. Or tear out a new tile job because a lead drain line was left in and is now clogged beyond repair. So remember to be observant, ask questions, and do the improvement right the first time.