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Housing Supply Slowdown in the Sun Belt, Coastal Cities, and Across the US

September 10, 2025 / 11:05

This episode discusses the rising housing prices in the U.S., the impact of supply shortages, and changes in building trends across different markets. Guest Joseph Gyourko, a Professor at the Wharton School, shares insights on historical housing market trends and the effects of local regulations.

Gyourko highlights the significant price increases in coastal markets from 1975 to 2000, with cities like San Francisco seeing a 160% rise. In contrast, Sunbelt markets like Charlotte and Las Vegas experienced minimal growth during the same period.

In the last 25 years, Miami and Phoenix emerged as top appreciating markets, while Gyourko notes a slowdown in housing production in the Sunbelt despite high demand. He attributes this to local regulations that hinder new developments.

The conversation also touches on the shift towards multifamily housing due to difficulties in building single-family homes. Gyourko expresses concern that if current trends continue, Sunbelt markets may become as expensive as coastal cities.

Finally, Gyourko discusses potential policy changes aimed at incentivizing localities to increase housing production, emphasizing the need for local control over zoning and permitting decisions.

TLDR

Housing prices are rising due to supply shortages and local regulations, with insights from Joseph Gyourko on market trends and policy implications.

Episode

11:05
00:00:00
Dan Loney: We have seen housing prices rise quite a bit in the last few years. One of the reasons is the low levels of
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available supply. Building in some markets in the South has slowed dramatically, where it was once strong just a few years ago.
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And really, the strength of the industry. And that is also leading to changes in a variety of different locations as to how
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we're thinking about building around the country. Pleasure to be joined on this topic by Joseph Gyourko, who is a Professor
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of Real Estate, Professor of Finance and Professor of Business, Economics and Public policy here at the Wharton
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School. Joe, great to catch up with you again. How are you, sir? I am well, thanks for having me.
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So I mean, part of this is the discussion around some of these different markets,
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but as a whole, I think we're talking about the issues that the housing industry is having in general, kind of across the
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country at this moment. That is— that is true, and it's actually a longer-run problem
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than I would have thought before, you know, we did the research that generated this discussion today. Do you
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want me to start with just a little bit of history on— - Please do. - the American housing market?
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So I'm going to quickly go through prices and quantities. And I'm going to go— I'm going to start
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50 years ago, in 1975. We have really great housing price indexes going back that far. And there's a specific
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index. I know you don't want jargon in these things, but there's a specific index that tracks 20 markets as best as we
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can. It controls for the quality changes in houses and the like. And if I divide that period, that 50 year period, from '75 to
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2025, let's say— if you divide it into two periods, 1975 to 2000, you see what used to be the old American housing market. Which
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is, over that 25 year period, the big coastal markets— think Boston, New York, DC on the East Coast, Seattle, San Francisco,
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LA, San Diego on the West Coast, they became quite expensive. Over that '75 to 2000, San Francisco's real constant quality price— so
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the same home being priced over time— way more than doubled. It rose by 160%. The laggard in the coastal markets over that 25-
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year period was San Diego, at 69%. All the other markets I noted were in between, basically 70 and 160. The same time period, Sun—
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the Sunbelt. There seven Sunbelt markets in this 20-market index. Charlotte was the leader in price growth, real constant
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quality price growth, at 11%. Vegas, Las Vegas, was the laggard at minus four. So basically, from 1975 to 2000, the Sun Belt
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did not have significant real price growth. Okay? Now let's look at the last 25 years. Not just the last five or Covid
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effects and the like. If you just do 2000 to 2025, if I told you to guess which was the highest-appreciating market
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among the 20 track, I bet you would not pick Miami. Miami was the highest appreciating. - Yeah. Yeah.
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- It was about 155%. Phoenix was close at nearly the same amount. Atlanta was plus 32. And by the way, New
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York was 70%. Yet still— that's the New York City metro area— it grew at 70% real price growth over that 25-year period. But
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the Sunbelt markets were the big growers in price. And it's not just a recent phenomenon.
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And so now, to a degree, we're not seeing the same type of growth in the Sunbelt in recent years then maybe we saw, you
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know, in the prior half of that 20, 25-year period. That's exactly right. And I'll try to be brief here.
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I'll now go to quantities. That was— I'm an economist. We did price, but let's do quantities next. If you go back to, say, the
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1960s, where we have census data, there was a huge spread in the building, the rate of building of new housing across markets. In
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the 1960s, believe it or not, Phoenix grew its housing stock by 8.9% per year. Now there are 10 years in a decade, which
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means they expanded the metro- wide housing stock by 89% over 10 years. For LA and Detroit, Los Angeles and Detroit, they were
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the lowest, among the lowest growing markets, in terms of building. They were at 2.5% in Detroit per year in the '60s, and
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LA was 4.1. That— the difference between Phoenix and Detroit, 8.9 and 2.5, is basically almost a six and a
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half percent difference per year in the stock. Phoenix grew its stock by massively greater amounts than
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Detroit did. Fast forward 30 years, just to the 1990s. Los Angeles and Detroit are not growing their stocks much at
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all. They're growing by way less than 1% a year, which means their decadal increase in stock is less than 10%. But Phoenix is
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down to 3.3% a year, from 8.9 to 3.3. That's in the 1990s. Now let's fast forward to the 2010s, where you started this
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conversation. Detroit is 0.8% a year, but Dallas is the biggest producer at 1.8%. In other words, the spread used to be six and a
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half percent in the 1960s. It fell to basically two, two to two and a half percent in the 1990s. And it's now 0.7%. That's
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the big change, is that the Sun Belt still produces the most housing across markets in the US, but it's at a way less
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intense rate. Why do you— why do you think that is? Well, we— my co-author in this and— we've been doing research on
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this for a quarter century now— is a guy named Ed Glaeser at Harvard. And we think it's local regulation. And that what's
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happened is, in the Sun Belt, particularly suburban areas, are figuring out how to slow and stop new developments. It's a
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feature of the American system that, you know, zoning and permitting is a very, very local decision. So what's happened is
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very— it's still very high demand. We still have large internal migration out of the coastal markets on the East and West
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Coast to the Phoenixes, Miamis, Dallases and Atlantas of the country, and they're just not building as much.
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And then you— don't you often have to factor in the type of housing that seemingly is being built right now, in terms of the
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rise of multifamily that we've seen kind of go through the roof over the last couple of decades? And it feels like we're seeing
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more of that built than we are seeing single family homes. And that's not new. We overbuild multifamily markets
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from time to time. Most, but not all of that occurs in or near urban core, central cities, although there are certainly
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multi units in in the suburbs. But yes, recently, we have seen a big rise in multi. We have seen it in the past, but one of the
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reasons for that is simply because it's become harder to build single family.
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And do you expect that we could see a shift, then, on the policy side in the years ahead, that may be able to open the doors to more
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build in, you know, in the next couple of decades? One— I would hope so. Because this, what I just
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described, this situation of strong demand in the Sunbelt, but not nearly as high levels of new housing growth, particularly
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single family growth, as in the past, is a recipe for higher prices. Now, let me be clear, Miami, Atlanta, Dallas and
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Phoenix, the— I'm just using them as examples. They are not as expensive as Los Angeles or New York. But if they continue on
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this path for another 20 years, they will be. Because it took roughly three decades of really low growth and high demand to
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make our coastal markets very, very expensive. So this is an important change. And why that's important is, where's the job
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growth in America? The answer is in those Sunbelt markets I talked about. So we would make a wide, much wider swath of
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America unaffordable in terms of housing. So it's a big deal. Which is a long preamble to answering your question, which
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is, I don't know if policy will be successful. It's local control. So there's an interesting bill that just came
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out of the Senate Banking Committee that had bipartisan support, and it's— so it hasn't passed the House. It hasn't been
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signed by President Trump. But the bill, basically, is trying to incent cities, localities who use community development block
00:09:37
grants, and it's going to give them more if they build more. That's what the bill would do. That's one way to do it, is for
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the federal government to use its resources to incent localities to permit more. But understand, that's a key— that
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distinction. The federal government does not issue building permits. Right? I live in Swarthmore,
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Pennsylvania, a suburb on the southwest side of this metropolitan area. We control our zoning and our permitting.
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We do. It's not Governor Shapiro in Harrisburg. It's us. So will policy change? I think the most important thing is that it
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change at the local level. And there has to be a recognition that these high prices are, I think, largely— not totally— but
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largely due to restrictive permitting at higher— high regulation at the local level.
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Joe, great to have your insight today. Thanks very much for your time. All the best, sir.
00:10:42
All right, thanks. You got it. Joseph Gyourko, Professor of Real Estate, as well as Professor of
00:10:46
Finance and Professor of Business, Economics and Public Policy here at the Wharton School.

Episode Highlights

  • Surprising Market Trends
    Joseph Gyourko reveals that Miami has seen the highest appreciation in housing prices.
    “Miami was the highest appreciating market.”
    @ 03m 19s
    September 10, 2025
  • Future of Housing Growth
    Gyourko discusses the implications of slow housing growth in the Sunbelt, warning of rising prices.
    “This situation is a recipe for higher prices.”
    @ 08m 24s
    September 10, 2025

Episode Quotes

  • Miami was the highest appreciating market.
    Housing Supply Slowdown in the Sun Belt, Coastal Cities, and Across the US
  • This situation is a recipe for higher prices.
    Housing Supply Slowdown in the Sun Belt, Coastal Cities, and Across the US

Key Moments

  • Market History00:19
  • Miami's Rise03:19
  • Future Concerns08:24

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