Take a look at this,
the view from the A441, Pershore Road (one of the main roads into Birmingham). Holly Avenue is the roadway between the shop ("Alternatives") and the house. Follow the camera down Holly Avenue and, at the other end, is a dead end, with a gate leading to garages and secure parking behind the houses. There's no direct access to the houses, which isn't very convenient, but at least the people living in the houses have somewhere to keep their cars.
I'm not familiar with the area but from the map it seems to be close to the university, and also to Moseley Village, where I used to live many years ago, and was then a pretty buzzy place. There are also plenty of parks and open spaces around there (including one at the other end of the secure parking, as far as I can see). I'd imagine bored teens living around there do pretty much what bored teens anywhere do, which around there would probably involve catching a bus into the city centre or, in the opposite direction, into nearby Edgbaston, in search of entertainment. It's also reasonably close to
Cannon Hill Park, which used to host a lot of community events (including some great movie seasons).