Clear procedures for site supervision should be in place. This involves two main activities: technical supervision and policies supervision (health & safety, safeguarding, etc.). Technical supervision ensures that the design specifications are respected in terms of dimensions, specifications and quality of building materials. This type of supervision should be conducted by a qualified practitioner such as an architect or engineer. Policies supervision means ensuring that all aspects indicated in the procurement process and the plan for the management of building works are implemented on site.