Hi. It's a brand new house so never connected before. We just have a temporary leaky thing going on in the photo! I think everything would have been fine if they hadn't put that cupboard inbetween. Yes they would run the plastic pipe under the sink then behind the corner unit and then put in a standpipe (is that the right term) - he showed a photo of a metal pipe - behind the actual washing machine. At first all of it was going to be copper piping but they are very keen to persuade us that this would be difficult and disruptive, whereas the other solution would only take a couple of hours. Just a bit concerned that this won't cost us anything but any leaks in the future might and the builders/developers will be long gone!