Quote:
Originally Posted by Nouvellecosse
I'd say that's mostly true, but higher residential density often does have some productivity benefit. Dense residential tends to be located disproportionately in more desirable locations places where people can be more productive due to spending less time traveling to access work or for other reasons. If you reduce the time you spend in a car by an hour per weekday then that's 260 hrs per year that you can use for productive purposes. Or it can allow you to take transit more easily where you may be able to work en-route, depending on how crowded the vehicle is. And a better location can also put more jobs and/or better paying jobs within reach. But if it's dense residential in an inconvenient location then there's probably no productivity benefit.
But the biggest difference is probably that dense residential just isn't as dense as typical commercial in that each resident takes up more space in a residential building than each worker in an office tower.
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I might have worded this poorly, higher residential density definitely has
external productivity benefits like you mention (i.e. positive externalities), but
internally to the owners I don't think there is an inherent perceivable benefit to higher density living. If a resident was given the choice between a lowrise apartment downtown vs a highrise apartment downtown, I don't think there is much of a perceivable benefit to living in the highrise. Meanwhile, a financial company might highly desire to be in the same building that other financial companies are in, rather than in a street level separate office.
It's also worth noting that in general, residential owners are looking for enough space to fit one single family, multiplied several times (but dividable). Commercial owners are looking for enough space to potentially fit an entire multinational corporation. The scale is just completely different.