I like the idea of walking 15 minutes to get all the things. But man when I think of the costs involved in making sure there is a High School (in the US they tend to be large and draw from a distance) within 15 minutes of everywhere (no small cost to drop in a high school somewhere), or plop down a grocery store in a neighborhood ... that sounds both super expensive and politically difficult, and for some good reason…
> But man when I think of the costs involved in making sure there is a High School (in the US they tend to be large and draw from a distance) within 15 minutes of everywhere Not absolutely everything needs to be walkable in 15 minutes. Once kids are teenagers having go to school on transit or bicycle would be fine. Perhaps focus on elementary schools being walkable.
The closest high school is 2.5 miles away and the high school my child attended was 6.5 miles away due to a quirk in the boundaries and which schools feed into which higher level school.