Help/advice please! Where do I stand in regards to repairs to a neighbour's property if it has been poorly maintained?
We live in an end of terrace house and are currently doing a full renovation, dormer loft and rear extension. We had a party wall agreement in place with our adjoining neighbour - he used our suggested surveyor. It showed that his house was in a poor state of repair.
When I say poor state of repair I really mean it. Holes in ceiling in one room, broken windows etc. He is a nice man and we've always been on polite but friendly terms. His business has really suffered under covid and he has very limited means. He has a dodgy rear extension that was already present over 10 yrs ago when we bought. It is a really makeshift looking thing with flaps of felt roof, no foundations, broken uPVC ramshackle windows etc. We have already had to plan in expensive work arounds involving valuable lost space in our extension to avoid any risk to his extension.
Sadly a section of the plaster in the ceiling of his original part of the house fell down over the weekend. Luckily no one was hurt. He sent photos to the party wall surveyor who then called me. Our builders and I rushed around to offer to help etc but they wouldn't let us in to help clean up. He is assuming that we will pay to have it replastered and redecorated because he thinks vibrations from our building work have caused it to happen.
There has been a lot of banging last week from our builders as they removed chimney breasts on the opposite side of our house (ie not on the party wall side) and they have been retiling our roof but the main steels for the extension are not even in yet and they haven't done any work actually on the party wall side.
I want to do right by him but it feels like if the plaster fell down on the opposite side of his house to where we were working it was probably very loose. The area of damage was basically next to his other party wall, not ours, but we are the ones doing noisy work. The houses were built in 1910 and maybe even banging a nail for a picture hook would cause this to happen?
The surveyor said he is happy to just document it for now, he doesn't think it needs an extra site visit to assess as there is a lot of detail in his original conditions survey.
Sorry for the length of this! My main question is, where do we stand? I'm happy to pay for any damage genuinely caused by my work but I'm worried about setting a precedent which would make me responsible for repairs that his house has needed for the last 20 years. What would you do?