A derelict building or person signifies a lack of hope, a ‘lost sheep’.

Psychological / emotional perspective: Since hope and faith are two prime motivators, anything that appears derelict suggests that we have lost the ability to move away from difficult circumstances.

Material aspects: When the energy has gone from a project or, for instance, a relationship, and it has lost focus, we may dream of dereliction. This is when there is no hope of re-energizing the project or relationship.

A part of one’s life that will or has become extinct

This dream comes as a warning to guard your valuables (Gypsy).