So our neighbours (semi detached) sold/got rid of a few pieces of furniture recently, things like a big sofa, table & chairs, mirrors, canvases, etc - wasn't stalking just spotted them on Gumtree!!
Anyway, I am assuming they have replaced certain things like the sofa - but from around the time they got rid of a load of stuff the noise coming from them is considerably louder!!
It seems to be specifically coming from their living room which shares a wall with ours - it's loud banging, running about, footsteps that sound like dull thudding (they have a toddler so I am assuming most of the noise is the child) etc - things we didn't hear before though!
It is weird, the only thing I can think of is if they have less furniture in the room, is that making the noise more noticeable? Is that a thing?!