The housing boom was not people building up residential areas inside of well developed cities. It was people accepting some sacrifice and moving outside of cities into areas where previously there was nothing. This is a big part of the reason why housing was so cheap. It also helped keep city housing prices low since it had a [quite extreme] depressing effect on demand.
The reason I mention this is because when you build houses in the middle of nowhere you don't often have to go far to find more nowhere. Everywhere you look is just row and row of cookie cutter houses, then a 2 mile bike trip and you're in the 'wild lands'. Lots of children got to grow up in these exact sort of areas. I had the fortune of getting to spend some brief part of my childhood in an area like this, and then most of the rest in an ultra urban area apartment in the middle of the city. Suffice to say, I won't be raising my kids in the middle of a city!