I wonder if that would be necessary. San Francisco is kind of a special case as a small peninsula. That puts limits on the ways it can grow. You could probably build more housing units but you'll rapidly run into limits on streets, utilities, schools, etc.

I don't know how much the issue is with the rest of Silicon Valley. There used to be a lot of undeveloped area not too far from Palo Alto.

Texas may want to avoid the wrong kind of over-dense housing, since they've got plenty of land, though there are also reasons to encourage people not to commute multiple dozens of miles per day.

>I wonder if that would be necessary. San Francisco is kind of a special case as a small peninsula. That puts limits on the ways it can grow. You could probably build more housing units but you'll rapidly run into limits on streets, utilities, schools, etc.

I'm going to push back on this. Manhattan is less than half the size of San Francisco and has nearly four times the population density. The Bronx is roughly the same size and has double the population density. It isn't that San Francisco can't expand, it is that it doesn't want to.

You know what Manhattan has that SF doesn't.

Subways[1].

Sure developers would love to build more chicken coops for tech bros. But they absolutely don't want to kick down coin to pay for the subway system needed to support that density.

[1] Oh yea SF has BART which was built 50 years ago and not expanded since. And the central subway which is 1.7 miles long, not open yet after ten years of construction and 20 years after it got the green light.

The famous legend of NYC is that they had the vision to build infrastructure beyond current needs.

Now, it's trendy to view any investment by democratic government as wasteful, and to reduce the taxes by which the community makes that investment to nothing.

What will happen to future generations, who have us as their forbears rather than the visionary New Yorkers.

There's plenty of investments. It's called suburban sprawl, and some people even think it's a tax ponzi scheme.

2 of the 3 subway systems in NYC were built by private companies.

It was only later that all were merged into one publicly-managed one.

That was also when expansion basically stopped.

I agree, which is my underlying point: they don’t want to expand! The lack of public transit is a problem plenty of people have been yelling about for decades, as you mentioned. Developers, citizens, and the city council have all proven over the years they are unwilling to do what needs to be done to make expansion possible.

> You know what Manhattan has that SF doesn't. Subways.

Well, yes. And deep bedrock and fairly stable geology that makes them possible.

If Japan (earthquakes) and the Netherlands (built on swamp) and Shanghai (swamp) can do it so can San Francisco.

Well and there is also the old Bart tunnel and more modern Central Subway. And then there are the subway tunnels they have built/building in Los Angeles.

Snippets I've read over the years seem to say that subway tunnels and deep foundations don't tend to fail in earthquakes because they to move with the ground around them. And because they are already structurally strong.

Basically the lack of mass transit to support higher density is because of lack of willingness to pay for it. Unwillingness to pay for public infrastructure is due American economic ideology. Not anything specific to San Francisco.

Shitty soil and earthquakes in combination is a bad combo.

https://www.businessinsider.com.au/earthquake-expert-san-fra...