I’m in a flat with two properties either side and above us containing adults and children. The constant noise heard from them using the bathroom, putting taps on, walking up stairs, tantrums, drilling etc. is too much.
Is the sound insulation quality poor? Is the behaviour of those familys unreasonable (or is it just everyday livng)? Doesn’t sound like it. Are you being overly sensitive? Answers to these questions will determine which remedy you should seek. If you feel that you have a genuine problem contact your local environmental health department to investigate and not just the noise team. The private sector housing team can be contacted to survey the property to determine whether there is a problem with sound insulation or construction.