The housing affordability paradox

Editor’s note: This article first appeared in Money Matters, a newsletter from Britannica Money, on July 19, 2026.

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Why won’t home prices fall?

© Jakub Krechowicz, Alex/stock.adobe.com; Photo illustration Encyclopædia Britannica, Inc.

Affordability. It’s a word that’s on everyone’s lips these days—from consumers feeling the squeeze to politicians on both sides of the aisle promising relief. But making housing more affordable isn’t like lowering the price of eggs or gasoline. Homes play by a different set of rules.

Home prices aren’t just a cost. For millions of us, they’re also our largest asset and, eventually, a key part of our retirement plan. So I’m happy when I open Zillow and see that my home is worth a lot more than it was a few years ago. But I also know that every dollar of appreciation makes it a little harder for my kids—and millions of other first-time buyers—to buy a home of their own. That’s the contradiction at the heart of America’s housing market.

The 2007–08 financial crisis taught us a painful lesson: The drop in home prices didn’t just hurt homeowners. It rippled through banks, financial markets, and ultimately the entire economy. By the time the dust settled, millions of Americans had lost their homes, household wealth had evaporated, and the global financial system had come frighteningly close to the brink.

The policy response was swift and aggressive. The Federal Reserve slashed interest rates to near zero and, at one point, held nearly $1.8 trillion in mortgage-backed securities in an effort to stabilize the housing and mortgage markets. But they also reinforced an idea that still influences housing policy today: Falling home prices can be far more dangerous than rising ones.

That’s one reason housing is different from almost every other market. When the price of eggs or gasoline falls, we celebrate at the checkout counter or pump. When home prices fall, we worry.

Every market depends on some combination of supply and demand, but housing is different because nearly everyone has a stake in the outcome. Existing homeowners generally want their biggest asset to appreciate. Prospective buyers want prices to come down. Those goals can coexist for a while, but they eventually pull in opposite directions.

Here’s the uncomfortable truth: Scarcity creates value. Value creates constituencies that defend scarcity.

That doesn’t mean that homeowners are selfish or that there’s a conspiracy among the powers that be to keep prices lofty. It means incentives matter. Any proposal that makes housing more affordable has to answer a difficult question: How do you lower the cost of buying a home without eroding the wealth of the people who already own one?

Housing is complicated because it asks one asset to do two jobs: provide shelter and build wealth. Keeping both roles in mind can help you cut through the headlines—and make better decisions of your own.

One final thought. We spend a lot of time talking about housing affordability. Maybe we should also spend more time asking why so many of us have so much of our wealth tied up in a single, illiquid asset. If your financial advisor recommended putting 60% or 70% of your net worth into one investment, you’d probably find another advisor.

Maybe the housing conversation isn’t just about affordability. Maybe it’s also about diversification.