Boundary law states that you cannot build on, obstruct, use or traverse a property that is not yours. Doing so can be considered trespassing. There are many situations, however, where access to another’s property is legitimately and legally required. Some examples include: Your local utility being able to access their equipment on your property (hydro boxes, power lines, underground pipes, overhead wires etc.) legally and without interference. You and your neighbour need to share a narrow driveway between your houses to get to your garages at the rear. A laneway exists across the back of several properties that allows you and your neighbours to access the rear of your properties by cutting across the back of each others’ lands. You have access to a portion of your neighbour’s land for a specific purpose, like maintaining your eaves, or accessing a portion of your property that you couldn’t otherwise do without trespassing.
Easements are the tool used to create exceptions to boundary law. They turn what would have been a trespassing situation into a legal right.