A Good Neighbor Fence is a wood privacy fence where the finished side (i.e. the more attractive, smooth side) faces the neighbor's property. The homeowner building the fence then has a view of the rails and posts from inside their yard. A Good Neighbor Fence is commonly considered good etiquette, but is not typically a law or requirement. This phrase is also used to simply describe a fence that is shared by two neighbors. Ownership and maintenance may be equally shared with an informal, often unspoken agreement.