Dead End Road in front of the House

We have a dead end road towards the east of my House(Referred as MyHouse hereafter). Towards the north of my house there is another house (Referred as HouseNorth hereafter). There is another house on the opposite side of the dead end road i.e. opposite to MyHouse (Referred as HouseOpposite hereafter). Main Road | | | | | |------------------------------------ HouseNorth | |------------------------------------ Main Road MyHouse | | HouseOpposite | | Dead End So, the dead end road towards the east of MyHouse is on the West side of HouseOpposite. The entrance of HouseOpposite is from North and HouseOpposite has the main road even on their North side. The dead end is a 10 feet wide road and the only entrance to my house. The HouseOpposite have started to park their vehicles opposite to MyHouse in the dead end road and HouseNorth also park their vehicles in the 10 feet road by blocking the only entrance to MyHouse . Can you please kindly let me know if we can purchase the portion of the deadend road and add a gate such that the entrance of MyHouse is not blocked. What are the legal issues that I would have to address or take care of? Thanks and Regards