What does it mean to dream about a dead neighbor?

In dreams, death is usually a metaphor relating to a significant change. In this particular dream, the neighbor might be a symbol of someone or something close to you that is undergoing significant change. Alternatively, the neighbor could represent a certain part of your own life that is changing or coming to an end. For example, if you or the neighbor were moving away, the dream would express the loss of your close relationship with this neighbor.