I live in a semi detached with three dc, husband works away a lot.
The neighbours had frequent gatherings and parties late at night and into the small hours when they first moved in a few months ago. I thought this would stop after novelty wore off, and because is now winter (they were very noisy and would wake the dc as their patio is under the dcs' window, almost). They still have infrequent gatherings late at night, but nothing I have complained about.
They also have a dog, and I was forced to complain about this after almost a week of it being left alone during the day and constantly barking (punctuated by whining) I work from home and couldn't escape from the noise anywhere in the house. We were also woken twice in the middle of the night by the dog barking (when somebody was home).
The dog noise has improved thanks to their landlord, with the knock-on effect of the late night noise improving too.
However, they've just arrived home from the pub, at 11.30 pm , and some men began shrieking (it is a couple mid to late 20s who live there)and roaring a little past midnight onwards.
They woke the dc, the youngest of whom said she was scared. I'm afraid I banged on the wall at this point, but heard laughter in response.
I don't know whether I am being unreasonable or whether my tolerance levels are shot to pieces because of the earlier noise mentioned in past few months and weeks. I'm still a nervous wreck now. I'm constantly monitoring our own noise levels in the house 'in case' they use it to justify their own noise.
I've felt too vulnerable to approach them to ask them to show consideration at night as there are large groups of them (mostly male) usually and they're drinking etc I'm also afraid that I shouldn't have banged on the wall, as this could make things worse.
I might not see their landlord for months now, as he last came to mow their lawn (October ish).