A site description before the start of work, also known as the state of moment, is used to record the current state of a structure. This site description must be made very precisely in order to potentially proof that damage to the described structure is or is not the result of the works in the immediate area. This is done in orde to avoid discussions later on when damage occurs.
To make this site description, an accurate inspection takes place in all parts of the described building. In particular, the adjacent parts are examined and any damage such as cracks, damp spots, etc. is recorded. The report is sent to the parties involved for signature. This document can serve as legal proof in the event of damage.