We had a very similar issue a few years ago - actually to the point I wonder if it is the same place!
It was four house to the right, four to the left and four at the bottom with a small entrance road (it was on a new estate). People parked along the entrance road and outside all of the houses were allocated parking so basically a car park.
There were about four houses who had young children and they were all antisocial wankers who didn't give a shit about anyone else. They couldn't be arsed to take their children to the park which was less than two minutes away and let them play in the communal car park.
They would ride bikes and scooters about and scratched numerous cars, kick balls about denting cars and damaging property, they would jump out in front of cars as they came in or tried to leave. They would dump their bikes in peoples spaces, chalk all over the road (they once chalked out a tennis court
)
The parents thought their little shits could do no wrong so if you nearly hit one, you must have been going too fast or weren't looking. Also the old children are allowed to play outside and get fresh air. Us and other residents complained and a no ball games sign was put up and totally ignored. A letter got sent to all residents saying children are not allowed to play in the car park, all hell broke loose and they totally ignored it.
In the end we moved, couldn't be dealing with those morons anymore. I swear even if one of their kids got hit by a car, they still wouldn't think they had done anything wrong - it would always be someone else's fault