Trees need to be maintained, if not they can become dangerous. Dead wood can be removed before it falls causing damage to people and property. Trees that are growing near to houses may have their branches interfering with the fabric of buildings as well as gutters, downspouts and windows. Trees may outgrow their immediate surroundings and become untennable in the small garden. Neighbours have the right to complain when trees block out natural light and become a nuisance.