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Q&A

Deputy Speaker Williams Q&A: Mangin on empirical evidence for housing scarcity theory

New York City Council · Sep 1, 2026 · starts 1:53:02 · 1 min 54 sec

Williams presses for empirical evidence. Mangin acknowledges housing scarcity isn't the only cause but calls it the root cause, citing the displacement risk index showing paycheck-to-paycheck families are most vulnerable. He notes a growing body of research over 25 years supports this view.

Nantasha M. Williams

Do you have any empirical evidence of that?

Nantasha M. Williams

Because I know we had a very lengthy conversation, but when I hear words like driven by root cause, I'm like, well, what empirical evidence do we have that says it is only housing scarcity that is creating these issues?

Nantasha M. Williams

Do you have any empirical evidence or things that you can direct me to to further understand?

Nantasha M. Williams

That theory and that stance you have.

John Mangin

Thank you, Deputy Speaker.

John Mangin

It's not the only cause, to be sure, but it's the fundamental root cause that we see.

John Mangin

Of course, when we're talking about

John Mangin

gentrification and displacement, we're also talking about lots of individual stories.

John Mangin

I mean, the displacement risk index that you mentioned notes that the biggest factor in displacement, the biggest vulnerability factor is, you know, families who might be a paycheck or two away from not being able to pay the rent.

John Mangin

And so when they experience a shock, you know, maybe there's a layoff or a health event or something like that and the income drops, those are the families that, you know, then

John Mangin

get hit the hardest by the housing shortage leading to difficulties for those families.

John Mangin

So it's not the only cause.

John Mangin

I would think of it as the root cause.

John Mangin

And I would say that there is a growing body of research over the last 25 years or so that supports that.

John Mangin

And there is increasingly good research on a sort of a smaller scale level that may make that realer for folks who can't quite see the macro picture.

Nantasha M. Williams

Yeah, I know a lot of the studies that I saw speak to that, but then there are a ton of other studies that have so many other causal claims for, you know, displacement and gentrification.

Nantasha M. Williams

So I just wanted to know if you were pulling from specific studies.