Hi all, first of all I would like to apologize if I posted a thread into a wrong section. My problem is the following. I am not aware of Australian requirements (including those that are imposed by law) regarding plumbing at someone's home. We have started renovation at our house and faced the problem of knowing nothing on what documents we should request from a person that is performing plumbing services (i.e., gas works, installation of bath tub, etc.) so that we have no problems in future, including problems with insurance. Do we need to request and keep any kind of a certificate, similar to a certificate on electrical works? I will be grateful for any reply! Thanks in advance!