Re: Who is responsible for repairs with leaking bathtub › Flat Chat Strata Forum › Common Property › Who is responsible for repairs with leaking bathtub › Current Page 07/02/2013 at 5:40 pm #17802 mattb Hi twins, as the crack in the drainage pipe is under the concrete slab in common property airspace, it is an OC matter. The lot owner is only responsible for the parts of the pipe in their airspace.