Persimmon Homes, prior to its rebranding, was called "Parsimonious Homes". They sold "back to basics" houses, where all luxury items were treated as optional extras. What's the point in paying for a dishwasher or a bidet that you may never need? Give the householder the choice.
Parsimonious homes, however, took this model to extremes, and their basic offering was simply a brick shell, where kitchens, bathrooms, internal doors, windows and even internal walls were only available as optional extras.