Those two things are the opposite of one another. If a city grows denser, the size of its footprint is smaller.
Suppose you create a lot of high density housing in the city. Housing costs decline. People who used to have to live with their parents get their own place. People have shorter commutes.
The population of the city hasn't changed. Maybe if you're the only city doing this then it's a competitive advantage and people move there from other cities to take advantage of the lower cost of living. But if all cities do this then there is no relative advantage and all that happens is that housing is more affordable and people waste less time sitting in traffic.
> Those two things are the opposite of one another. If a city grows denser, the size of its footprint is smaller.
I believe they're mostly complementary. You can't rebuild the city every other year because you have more demand for housing, it's a slow process. The city expands outwards if possible, and at the same time will be made denser when convenient.
I'd love for the whole thing to be Sim City-style "we'll just remove those 12 single-story homes and add a sky scraper", but it's really not. It takes years and years, and it's really impacting the quality of life during those years. I used to live in a part of the city that got more dense housing, and it wasn't fun at all, construction sites everywhere, traffic jams everywhere, and housing prices rising sharply. It might turn out nice in 20 years when they've doubled the density, but it's absolutely not during those 20 years.
Suppose you create a lot of high density housing in the city. Housing costs decline. People who used to have to live with their parents get their own place. People have shorter commutes.
The population of the city hasn't changed. Maybe if you're the only city doing this then it's a competitive advantage and people move there from other cities to take advantage of the lower cost of living. But if all cities do this then there is no relative advantage and all that happens is that housing is more affordable and people waste less time sitting in traffic.