Isnt it also related to utilities? I mean if you have laid water/sewage/power/gas/telco infra for a one family home, and someone builds a structure for 5 famili

Isnt it also related to utilities? I mean if you have laid water/sewage/power/gas/telco infra for a one family home, and someone builds a structure for 5 families how does upgrading all that infra work?