I live in Brazil. One of the classic questions we have to answer when the government is doing a census is how many bathrooms our home has. Along with other data it is one of the best indicators of how you’re doing financially. Nobody wants to have only one bathroom but nobody is building a second bathroom if they can’t afford to either. Number of phones and cars and that stuff can’t be trusted because people often buy those without being able to afford it.

Everything else in the house can be expanded with just some extra wood and room, but bathrooms don’t lie.