There's so much more to this.

Before the suburbs were a thing, many cities sold land to WW2 vets on the cheap with the promise that they had to "inhabit the property".

Many of them built these ramshackle 1bd 1ba bare minimum bungalows set on the very furthest back part of the property with future plans of building a legitimate house further toward the street.

Some of them...their plans never worked out, so now you'll occasionally see a 1bd 1ba bungalow style house sitting right on the rear property line that go on sale for dirt cheap.

A lot of this stuff led to other WW2 vets taking it upon themselves to develop houses in mass for their fellow soldiers and their growing families. Levittown, and the invention of the Suburbs rose with the advent of the highway systems in many cities.