Our neighbours have given us written and verbal notice that they're taking the chimney breasts out both upstairs and downstairs on their side of the party wall. ours are still in place. Neither are used.
1930s suburban semis.
Husband has diligently contacted our mortgage lender and insurer to check if any action required, and neither is interested. Neighbour has given his own non-expert opinion that it's fine and the chimney breasts aren't load-bearing and other than a fuck load of noise (not his words), it's all hunky dory.
DH would like some reassurance from a structural engineer or some other appropriate professional that this work won't cause damage to our house.
They've given us less than what is apparently the legal 2 months' notice.
It appears that, if we want professional reassurance, we'll have to pay for it.
We don't NOT get on with them, but we're not particuarly friendly either. Both sides make a fair amount of normal living noise (perhaps us a little more) and either the other party doesn't notice or think it's just normal life. No deep friendship to ruin but we don't already hate each other and don't want to start a war. They have work to do and we want / need to be supportive, but within reason. I recall now lots of stories of this is where neighbourly relations can go very wrong.