For building or civil engineering operations undertaken by a private individual for his personal use, that of his spouse, partner in a civil solidarity pact, cohabitee or his ascendants or descendants, coordination is ensured:
1° In the case of operations subject to planning permission, by the person responsible for project management during the design, study and project development phase, and by the person who actually manages the site during the construction phase;
2° In the case of operations not subject to planning permission, by one of the contractors present on site during the works.