Article L2113-11 of the French General Code of Local Authorities
The creation of delegated communes within a new commune automatically entails for each of them: 1° The institution of a delegated mayor; 2° The creation of an annex to the town hall in which civil status records relating to events occurring within the territorial limits of the delegated commune are drawn up. Civil solidarity pacts between partners who have established their common residence in the delegated municipality are also registered…