I shall try to be concise here! I live in a flat which is part of a converted building. There is another flat next to me, and at one point they must have been adjoining, because there is a door in the party wall. On my side, the doorway has been boarded up and plastered over, but in the other flat, the door is still there. It opens onto a wall.
I feel a bit anxious about this, because there's a pretty high turnover of tenants in the other flat, and at some point early on in a new tenancy, I always hear them trying the door and tapping on the wall to see if they can get through! I think the partition is only plasterboard and it really wouldn't take much effort to break it down if someone was so inclined. It would come out directly into my bedroom - I live on my own and I honestly feel a bit unsafe.
On one occasion, the neighbours came and knocked on my front door and complained that they couldn't get into the "second bedroom" because the door was blocked. They were quite put out when I told them it was my bedroom and not included in their tenancy agreement...
The real problem is that the owner of this other flat has refused to board the door up because it would cost money and it isn't affecting him. The last time the flat was unoccupied, I asked him really nicely if he would consider it, but no luck. I think he thinks I'm being silly/paranoid, and maybe I am, but he's not a lone woman with friends who have actually suffered break-ins while they were at home.
Who's BU - me or the owner of the other flat?