We moved in to a rented house temporarily in Sept as our purchase fell through at the last minute. It is a small old cottage. It is obvious now that it is very very damp. The bathroom walls and ceiling are COVERED in black mould really a lot more than I have ever seen. I sprayed it with that mould stuff and it disappeared but came back in 3-4 days. There is no way they didn't know before they let it to us but I am just wondering if I should tell the agent or if this sort of thing is normal and I have to sort it myself.