You have been given oral permission to park in a friend's driveway while attending a football game. Their permission is a(n)

The concept of a license in real estate refers to a temporary, revocable permission to use someone else's property for a specific purpose. In this case, having oral permission from a friend to park in their driveway for the duration of a football game exemplifies a license. This permission does not transfer any ownership interest in the property and can be revoked at any time by the property owner.

An easement appurtenant, on the other hand, involves a legal right to use someone else's land that is attached to a specific piece of land. It typically requires a written agreement and confers certain rights to the owner of the dominant estate. An encroachment refers to a situation where a structure or improvement unlawfully extends beyond the boundaries of one's own property into another's land. Littoral rights pertain to properties that are adjacent to bodies of water, granting the property owner specific rights to access and use the water.

In this scenario, since the parking permission is informal and temporary, it aligns perfectly with the definition of a license.