Our neighbours had scaffold erected on Friday when my DH questioned why they said they were having a loft conversion starting in a few weeks. Builder turns up this morning and starts the works, we have a shared wall in the loft should they have a party wall agreement in place? I’m unsure of the rules regarding loft conversions so not sure if it’s necessary or not but 1 weekends notice didn’t seem right especially as I WFH and they said it would be starting in a few weeks