Trump’s 50-Year Mortgage Proposal: Solution or Setback for Housing Affordability?

Federal Reserve’s Interest Rate Stance Exposes Growing Problem of Underwater Mortgages

WASHINGTON — The Federal Reserve indicated this week that prospective homebuyers waiting for interest rate cuts may need to remain patient, a delay that highlights a troubling trend in the housing market. Hundreds of thousands of Americans who purchased newly constructed homes in recent years now find themselves underwater on their mortgages, owing more than their properties are worth.

Industry analysts warn this situation didn’t develop accidentally. The lending practices behind these underwater mortgages bear striking similarities to warning signs observed in the early 2000s, before the housing crash.

According to new analysis initially reported by The Wall Street Journal, many homeowners who purchased newly built houses between 2022 and 2024 found themselves underwater almost immediately after closing. The culprit: major homebuilders offering artificially low mortgage rates—significantly below market levels—while charging inflated home prices.

“Being underwater on a mortgage simply means you owe more than your home is currently worth,” explains Greg McBride, Bankrate’s chief financial analyst. “The asset is worth less than the amount you borrowed.”

Data analyzed by industry expert John Comiskey reveals concerning patterns among major builders: 27% of Lennar’s FHA loans from the 2022-2024 period are now underwater, while 18% of D.R. Horton’s FHA loans face the same predicament. For comparison, only 10% of Quicken Loans’ FHA mortgages—a non-builder lender—are underwater.

The strategy employed by builders typically involves advertising enticing mortgage rates around 3.99% when market rates approached 6.3%. To offset these below-market rates, builders maintained sale prices above what properties might otherwise command. While buyers secured lower monthly payments, they often took on loans that exceeded their home’s actual market value.

When home price appreciation slowed, many borrowers immediately slipped into negative equity territory.

The consequences for homeowners in this position are severe and financially restricting. Selling becomes nearly impossible without bringing substantial cash to closing to cover the gap between the loan balance and sale price—potentially tens of thousands of dollars. Refinancing options disappear since lenders require equity for approval, effectively locking homeowners into their existing rates.

More troubling is the increased risk of default. Historical data shows homeowners owing significantly more than their property’s value are more likely to walk away from their mortgages, a dynamic that played a central role in the 2008 housing crisis. On a broader scale, concentrated pockets of underwater loans create strain for lenders, federal mortgage guarantors, and local housing markets.

Against this backdrop, former President Donald Trump recently proposed a potential solution on Truth Social: extending mortgage terms to 50 years. While supporters tout it as an affordability measure, critics have dubbed it a “lifetime mortgage.”

A New York Times analysis calculated that on a $500,000 home, borrowers could save approximately $250-$300 monthly—about $4,000 annually—with a 50-year mortgage compared to a standard 30-year loan. These lower payments could help more prospective buyers qualify for loans, particularly first-time buyers struggling with debt-to-income requirements.

However, the proposal carries significant drawbacks, primarily in lifetime interest costs. Using the same example, while a 30-year mortgage might accrue roughly $500,000 in interest over its term, a 50-year mortgage would generate nearly $900,000—meaning homeowners would pay almost twice the home’s price in interest alone.

Demographic shifts compound these concerns. The National Association of Realtors reports that the median age for first-time homebuyers has already increased from 36 to 40 in recent years. With a 50-year mortgage, these buyers would be 90 before fully paying off their homes.

Builder-backed mortgage incentives initially helped more Americans purchase homes during a challenging market period, but often at the cost of inflated prices and negative equity positions. With underwater mortgages spreading across portfolios of major homebuilders, policymakers and regulators are beginning to question whether the industry’s lending incentives deserve greater scrutiny.

Meanwhile, as the Federal Reserve maintains its cautious stance on rate cuts, the housing market’s structural challenges continue to mount, leaving many recent homebuyers in financially vulnerable positions with limited options for recovery.