bedtime for a two year old

[Shaunacm]

Hi,
I'm new to this and not being a parent myself, was hoping for some advice from mums.
I just bought a semi-detached new build home and am experiencing terrible neighbour noise.
Clearly, i've discovered new builds aren't soundproofed well and as a result i can hear every single noise from the neighbours child.
I am woken in the middle of the night, 2am, 4.30am, 6am by the child screaming, i get ready for work to the sound of the child screaming anywhere between 7am-9am, i come home to the child screaming, it's never ending.
The child turned two in November 2016 and I am just wondering at what age does a child establish a sleeping pattern and does not enough sleep contribute to a child's behaviour? What time does a two year old child usually go to bed at?
I moved in to the house in November and the average time the child goes to bed is 8.30pm/9pm. Sometimes, however, it can be 10pm and even recently as 11pm.
The parents usually work the child up as opposed to calming it down before bed, around half an hour before bed, we hear both the child and parents shouting, squealing, running around, kicking balls etc.
I'm really sorry if i sound stupid, but as i'm not a parent, i genuinely don't know if this is normal behaviour. Unfortunately, i hear everything and i am thinking about selling next year as the noise is unbearable.
I have to wear earplugs at night to stop the child wakening me through the night and first thing at weekends. Is this a case of 'terrible twos?' Will the child settle? Are the bedtimes i described above too late for a two year old?
Any advice/help would be greatly appreciated, thank you.

[Comealongpond89]

Hi! I'm new here as well. I have a 20 month old at home. Unfortunately sleep patterns can be different for every child. I was a nursery nurse for 8 years so I have some experience with these sorts of things. It does sound like the patents aren't really helping the situation either. Routine is very important for young children especially with things like bedtime. And being calm before bed can be important. Hopefully the child will settle into a better sleep patterns as they get older. But I do know people that have children that didn't sleep through the night til they were 4. Hope this helps and hope it gets better for you