I have a two story backhouse. It is pretty small; there is a "upstairs" which is just a room at the top of the stairs. There is absolutely no plumbing up there. We had a new roof installed 4 years ago. I live in Los Angeles where it has been raining for 3 days straight. My tenant just called and said there is a leak in the kitchen. There is nothing upstairs but that room and there is no water damage in there or signs of a leak. In the middle of the kitchen there is a bubble of paint that is slowly filling and leaking water out of it. Does anyone know how this could be possible? It is so confusing to me because there is no signs of where it could be coming from.. Lastly, know anyone who ca fix it lol?