no idea what happened but entire house is vibrating and i can hear running water next door

there’s no images to post but i’ll explained what happened and its 1am so i don’t want to wake my neighbour but before all that i need to explain something as i’m guessing 90% of people here are American and you guys don’t have Duel Oc houses i don’t think

Duel Oc is basically when one property has two houses they can be side by side or one back one front they look like thishttp://archinspire.com.au/project_post/dual-occupancy/ they are pretty common here in Australia

they are NOT two separate properties but they have separate addresses and separate mailboxes and one joint mailbox (e.g unit 1/2 123 fake st &unit 2/2 123 fake st)

i was washing dishes and turned off the hot water and noticed my pipes creaking A LOT so i ran cold water to try and cool it down and make them quiet

i then i noticed the humming i thought maybe it was the water heater filling with water or something and i went outside to check and there’s silence

thats when i noticed its the walls and its actually pretty loud it sounds like some ones idling a car inside the house the walls are also vibrating and the faucets are vibrating

i went out again and noticed right up the back behind me there’s a sound of a lot of water running at the back of my neighbours house so i have no idea what’s happened or if i need to call anyone