my neighbor's gable end wall is situated right next to my driveway which runs between both our houses. He has installed a wood burning stove, the flue protrudes out of his gable end wall over my driveway by approximately 380mm. This is a large chrome colored pipe that is a complete eye sore and is at head height. The work has been carried out without any consultation to myself. Can you advise on what I can do about this? The flue is also located at head height and they have not had permission to go on our property to install this.