Home Prices Keep Climbing as Mortgage Costs Squeeze Buyers

Paul Jackson

October 27, 2026

Key Points

  • Home prices rose 2.09% nationally, but the figures capture transactions before mortgage rates crossed 7%
  • Fifteen months of inflation-adjusted declines haven’t made homes broadly affordable
  • September contract signings fell 7.3%, revealing pressure that August’s price gains cannot capture

Summer prices meet a more expensive autumn

U.S. home prices gained momentum in August. Buyers shopping today face a tougher calculation.

The S&P Cotality Case-Shiller national index rose 2.09% year over year, while the 20-City Composite increased 2.65%, accelerating from July’s 2.47% pace. The figures cover transactions from June through August, before the latest increase in borrowing costs.

The average 30-year fixed mortgage rate subsequently reached 7.32% on October 22, easing from 7.40% the previous week. August’s average was 6.67%.

That timing matters. A price index records what completed deals were worth. Higher mortgage rates change what the next buyer can afford.

Our view is that the housing adjustment is showing up most clearly in shrinking transaction activity. Home values can remain elevated while fewer households manage to buy, limiting the business generated around each sale.

An inflation-adjusted decline does little for the mortgage payment

National home prices again trailed August’s 3.4% inflation rate, marking the 15th consecutive month of declining inflation-adjusted values.

That represents an erosion in housing’s purchasing power. It does not automatically reduce a buyer’s down payment or monthly borrowing costs.

The median existing-home price reached $429,100 in August, up 1.6% from a year earlier. This median measures the mix of homes sold, while Case-Shiller tracks repeat sales of individual properties.

Consider that same $429,100 purchase with 20% down and a 30-year fixed mortgage. Our calculation puts monthly principal and interest at approximately $2,208 at 6.67%, compared with $2,358 at 7.32%.

That is about $150 more each month, with the purchase price unchanged. Property taxes, insurance and other ownership costs come on top.

A household can gain negotiating room on the property and still lose purchasing power at the lender’s desk.

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The national average hides very different markets

The regional divide remains substantial.

Chicago prices rose 6.7% year over year in August, followed by New York at 6.2% and Cleveland at 4.3%. Seattle fell approximately 2%.

For buyers, that means national weakness may offer little relief in a city where prices are still rising rapidly. For businesses exposed to housing, geography can produce very different operating conditions.

Homeowners also have reasons to wait. Those carrying inexpensive existing mortgages face a higher financing bill if they sell and borrow again. That reluctance can restrict listings even as expensive financing weakens buyer demand.

The result can be a market where buyers and sellers struggle to agree—and fewer transactions get completed.

The next warning is already in signed contracts

September’s newer activity data sharpens that concern.

Completed existing-home sales increased 1.5% from August to an annualized pace of 3.99 million, although they remained 2.2% below a year earlier. Meanwhile, pending home sales fell 7.3% month over month and 11.3% year over year, with declines across all four major regions.

Pending sales track signed contracts that have yet to close, usually pointing toward completed transactions over the following month or two. Their deterioration suggests the modest improvement in September closings faces another test.

For investors assessing mortgage originators, brokerages and title insurers, that distinction is consequential. These businesses depend heavily on transactions generating loans and fees. Stable property values alone cannot provide that activity.

The recovery signal to watch is whether buyers start signing contracts again at today’s borrowing costs. Until then, rising home prices can coexist with a housing economy that generates less business.

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Author

Paul Jackson

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