Realtor.com Finds $1,136 Monthly Gap Between Existing Mortgages and Buying Again

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Simple Content Summary: Realtor.com’s November 11 analysis estimates a $1,136 monthly principal-and-interest gap between the typical existing mortgage and buying a median-priced replacement home, illustrating the continuing mortgage lock-in effect.

The financial penalty for giving up an older mortgage is still substantial, even after the housing market’s recent cooling. A Realtor.com analysis released November 11 estimates that a typical mortgage holder buying a median-priced home at the study’s assumed 7.32% rate would face a monthly principal-and-interest payment of $2,468, compared with $1,332 on the existing loan. The original source document provides the underlying figures and disclosure.

That $1,136 difference represents an 85.3% increase in the modeled payment. The report compares a typical outstanding mortgage rate near 4% with a new-loan scenario using a 14.3% down payment and a September median listing price of $419,250. These are illustrative national estimates, not a calculation of what every homeowner would pay after moving.

The distinction matters because many households weighing a move have substantial equity but would also surrender financing secured before mortgage rates rose. Equity may help fund a down payment, yet it does not automatically offset a higher payment on a replacement loan. The study’s comparison covers principal and interest, excluding property taxes and homeowners insurance, which can widen the actual ownership-cost difference.

The research tests how much lower rates would need to fall to restore affordability. At 6%, the estimated monthly payment would still be $2,154, about 61.7% above the typical current payment. Realtor.com estimates that 50.2% of households could afford the median-priced home at that rate, compared with 44.5% at 7.32%.

The national average conceals large metropolitan differences. According to the report, Portland, Maine, San Jose and Los Angeles show among the steepest percentage increases in replacement-home payments; Pittsburgh, Baltimore and Buffalo show among the smallest. Differences in prevailing mortgage balances, local prices and household incomes complicate direct market-to-market comparisons.

For agents and lenders, the findings help explain why rate cuts alone may not produce a large wave of existing-home listings. The report’s assumptions should be compared with current lender quotes and individual borrower circumstances before drawing conclusions about a specific purchase.