I live on a corner lot on a busy street. We have a short driveway that fits one car. Our second car is parked in a gravel parking area along the side street right beside our house. There is a duplex behind us that has an entire parking lot on the opposite side from our house that the tenants can park in. One of the tenants insists on parking right in our gravel area. BF told him if he wants to park there, he can do so toward the back of the area, furthest from our driveway. He agreed, but has continued to park as close to our driveway as possible ever since. What should we do? Because this area is on the other side of the public sidewalk, we assume it's technically city property and not ours. Also, in the summer, we have an additional car. So we will need all of that parking space when we get it back out of storage. We're ready to scream!