our house is a semi and the people in the house attached to ours are the most obnoxious people I have ever met! They have three kids (a son roughly the same age as me, a daughter who's about 18 and a daughter who is 9) the youngest is polite and well mannered, but the other two are loud and rude like their parents.
The mother stands in the garden shouting and swearing at her husband at all hours of the day, which currently is not a huge issue, but when dd starts talking I don't want her to be hearing that kind of language!
They scream and shout at the dog constantly.
They never mow their garden or tidy the rubbish in their garden which has led to rats living in their garage (which are at the bottom of the gardens in our road) so environmental health have had to be called. When MIL tried to speak to them about the issue they told her "it's not our fucking problem".
The oldest two swear and shout at each other, and at the youngest.
They have people coming and going from the house all hours of the day, slamming car doors and doors in the house, the TV upstairs is constantly blaring at all hours of the day and night,both of which disturbs dd who is not a great sleeper anyway.
Their is always covered in rubbish which blows all over our drive.
The final straw came last night, when at 2:15am they decided to launch into some very off key and screechy very loud karaoke 
Sleep deprived as I am, aibu to think this is now taking the piss??