There are so many people who move in new house and they notice after a while the house started to show them different problems. One usual problem is that the main sewer line is backing up after few months. The water heater fail. The tub is not draining. The toilet did not flush properly. How about that you have to call a plumber to have a plumbing inspection done! That will help you a lot! And you will learn something having the inspection done.