Posted: 05/08/2015 at 09:42
Too many dogs in too small an area, it's making them all stressed and anxious and they're barking and making a noise in order to get your attention (you're the pack leaders) so that you will exert authority which will calm them down. Inappropriate urinating is also a sign of anxiety. Coupled with the out of control dogs next door it sounds like a disaster area to me - I think you really need to reduce the number of dogs and then give them much more positive attention.
It would also really help you to consult a good dog behaviourist. Your vet should be able to recommend one.