Article R1331-37 of the French Public Health Code
I.-A dwelling is used in conditions that clearly lead to over-occupation in accordance witharticle L. 1331-23 and is therefore unfit for habitation within the meaning ofarticle L. 1331-22: -when it is occupied by more than two people per living room ; -or when it does not comply with the conditions set out in the article R. 822-25 du code de la construction et de l’habitation to qualify for personal housing…