American homeowners are sitting on one of the largest paper fortunes in modern U.S. housing history. Collective home equity has climbed to roughly $35 trillion, a towering gap between what owner-occupied housing is worth and what households still owe on it. On paper, that is a remarkable show of financial strength. In practice, much of that wealth is stuck. That tension is reshaping the housing market. Owners who refinanced or bought when mortgage rates were near pandemic-era lows have little incentive to move, little reason to refinance, and only limited appetite to borrow against their homes at much higher rates. The result is a market where balance sheets look healthy, but mobility remains frozen. The story behind the $35 trillion figure is not just that Americans got richer through housing. It is that millions of them have become richer in a way that is difficult, expensive, or simply unappealing to cash in. That helps explain why existing-home supply has stayed constrained even after the breakneck price gains of the pandemic years began to cool.
How the Fed Tracks $35 Trillion in Housing Wealth
The Federal Reserve tracks household housing wealth through its Financial Accounts of the United States, often called the Z.1 release. One of the clearest measures is the Fed’s owners’ equity in real estate series, which shows the value of owner equity at the national level. The basic math is simple enough. Start with the market value of owner-occupied residential real estate, then subtract mortgage debt tied to that housing stock. What remains is homeowner equity. In the Fed’s September 2025 Z.1 release, which was the latest full update publicly available heading into the end of 2025, household real estate stood at about $49.3 trillion through June 30, 2025. The separate owners’ equity series remained around the $35 trillion mark, underscoring how large the equity cushion had become nationally. That timing matters. The Fed later disclosed that the third-quarter 2025 Z.1 release, originally scheduled for December 11, 2025, was delayed until January 9, 2026 because of disruptions tied to revised government data schedules. So for a late-December 2025 article, June 30, 2025 was still the most recent quarter with a full official readout. Even with that limitation, the broader picture was unmistakable. Housing values had run far ahead of mortgage growth for years. The Fed said household debt grew at a 3.8% annualized pace in the second quarter of 2025, while owner-occupied real estate values rose by $1.3 trillion in the quarter alone. That is how the national equity pile stayed near historic highs even without the kind of explosive price appreciation seen earlier in the cycle.
Gains That Exist Mostly on Paper
Large equity totals do not mean homeowners are freely spending against them. A gain is unrealized until it is turned into cash through a sale or borrowing. In housing, both options have become harder to justify. Selling means giving up a home that may be financed at an unusually cheap rate. Borrowing means taking on new debt at today’s much higher costs. Freddie Mac said the average 30-year fixed mortgage ended 2025 at 6.15%, down from a first-quarter peak of 7.04% but still far above the rates many owners locked in during 2020 and 2021. That is why the equity boom has not translated into a wave of listings or easy cash extraction. A homeowner with a mortgage well below 4% may be sitting on a six-figure gain, but selling often means swapping a low monthly payment for a far higher one on the next property. A cash-out refinance can create the same problem. Even a home equity line of credit may feel unattractive when the first mortgage already looks like a financial asset. In other words, homeowners may be wealthier, but many are not more flexible. The market has handed them valuable housing wealth while simultaneously raising the cost of using it.
Tax Rules That Reward Holding
Federal tax law adds another reason not to rush for the exit. The IRS says homeowners who meet the ownership and use tests may exclude up to $250,000 in gain if single or $500,000 if married filing jointly when selling a primary residence. In general, that exclusion is available if the home was owned and used as a main home for at least two of the previous five years. That does not mean every seller escapes tax, but it does mean a large share of appreciation can be sheltered for many households, especially those who bought before the pandemic surge in prices. The tax code therefore softens the penalty for holding appreciated housing and then selling later, rather than moving quickly or frequently. The policy does not cause the lock-in effect by itself. Mortgage rates do most of that work. But together, low embedded mortgage rates and generous home-sale exclusions create a strong financial case for patience. Owners are not just reluctant to move. In many cases, they are being paid to wait.
The Lock-In Effect and Its Consequences
The term “lock-in effect” has become common for a reason. Freddie Mac estimated in its research that the national average mortgage rate lock-in effect was $55,000 per household for the fixed-rate loans in its portfolio as of mid-2023, with especially large benefits for loans originated in 2020 and 2021. That research predates late 2025, but the logic only became more relevant as many owners continued to sit on mortgages well below prevailing rates. The market consequences are visible in turnover. The National Association of Realtors reported in its 2025 profile of home buyers and sellers that the median tenure before selling reached 11 years, an all-time high. Longer tenure means fewer existing homes coming onto the market, less churn, and fewer opportunities for first-time buyers trying to enter at today’s prices. That is why the $35 trillion headline cuts both ways. Record equity is good news for incumbent owners with time on their side. It is less helpful for buyers who need inventory to loosen and affordability to improve. The aggregate number also hides big differences between owners. Someone who bought in 2016 is likely in a far stronger position than someone who bought in 2022 with a much larger mortgage and a thinner cushion.
What Would Unlock the Wealth
Two things would have to change for more of this housing wealth to become active rather than dormant. First, financing conditions would need to improve enough to narrow the gap between old mortgage rates and new ones. Mortgage rates did ease from their 2025 highs, but not nearly enough to erase the advantage many existing owners still enjoy. As long as that gap remains wide, moving will keep looking like a self-inflicted pay cut. Second, homeowners would need more attractive ways to tap equity without blowing up their monthly budgets. That could mean more competitive second-lien products, more appetite for prudent home-equity lending, or simply a rate backdrop that makes borrowing feel less punitive. Until then, the most rational choice for many owners will remain the same: stay put. That is the quiet truth behind the $35 trillion number. It reflects real wealth, and in many cases extraordinary wealth. But it is wealth that remains trapped inside homes, protected by low mortgage rates, reinforced by tax rules, and visible everywhere in a housing market that still does not have enough homes for sale.
Paul Anderson is a finance writer and editor at The Financial Wire. He has spent seven years writing about investment strategies and the global economy for digital publications across the US and UK. His work focuses on making sense of economic policy, cost-of-living issues, and the stories that affect everyday Americans.
