people hanging out in front of buildin

[Sami Gren]

HI ALL,

I have this small uilding in a C- area, recently one of the tenants son started having friends over and they hang out in front of the building, it can be from 2 to 4,5 people hanging out in front of the building on the steps and smoking..

IS THERE ANYTHING I CAN DO? like people can say i am allowed to be in front with friends..

what would you suggest?

THANK YOU VERY MUCH