American home prices kept climbing in August, but they lost ground to inflation for a fifteenth consecutive month — a slow erosion of housing wealth that is unfolding just as the Federal Reserve opens a two-day policy meeting with another rate increase still on the table.
The S&P Cotality Case-Shiller U.S. National Home Price Index rose 2.1% from a year earlier in August, released Tuesday morning, accelerating from a 1.9% annual gain in July. The 20-City Composite climbed 2.7%, up from 2.5% and ahead of the 2.5% economists had expected. The 10-City Composite advanced 3.6%, from 3.4%.
Those nominal gains mask the real story. With consumer prices running at 3.4% in August, home values declined roughly 1.3 percentage points in inflation-adjusted terms — the fifteenth straight month in which housing has failed to keep pace with the cost of living.
A Market Split Down the Middle
The national averages conceal a widening regional divide. Chicago led all 20 cities with a 6.7% annual gain, followed by New York at 6.2% and Cleveland at 4.3%. At the other end, Seattle prices fell 2.0%, Las Vegas dropped 1.3% and Denver slipped 0.8% — a spread of nearly nine percentage points between the strongest and weakest markets.
Month-over-month figures were similarly mixed. On a seasonally adjusted basis, the national index rose 0.3% and the 20-City gained 0.4%. Before seasonal adjustment, both fell — the national index by 0.2% and the 20-City by 0.4%. The Federal Housing Finance Agency's separate index rose 2.4% year over year and 0.3% for the month.
Mortgage Rates Are Doing the Damage
The drag on housing is coming from financing costs. Freddie Mac's survey put the 30-year fixed-rate mortgage at 7.32% as of October 22, the first weekly decline since August. The 15-year averaged 6.68%. A year earlier, those rates stood at 6.19% and 5.44%.
"The average 30-year fixed-rate mortgage declined this week, offering some relief to prospective homebuyers," said Sam Khater, Freddie Mac's chief economist.
The relief arrived late. Mortgage applications fell 5.3% in the week ending October 16, according to the Mortgage Bankers Association, with the purchase index down 18% from a year earlier.
"It is very clear that the higher mortgage rate environment has cooled the housing market this fall," said Joel Kan, the MBA's vice president and deputy chief economist.
Anthony Smith, a senior economist at Realtor.com, was blunter: "The damage to the fall housing market is already done." Buyers, he noted, "may be gaining power at the negotiating table as the pace of sales slows, but that leverage has come at the expense of affordability."
Sellers, meanwhile, are simply staying put. Roughly 65.6% of outstanding mortgages carried rates of 5% or lower as of the second quarter. "Homeowners are really hesitant to sell at a loss if they don't have to," said Mike Simonsen, chief economist at Compass.
The Fed Holds the Next Card
The Federal Open Market Committee began its meeting Tuesday and will announce its decision Wednesday at 2 p.m. Eastern. The benchmark rate sits at 3.75%–4.00% following a quarter-point increase in September.
Traders expect no move. CME FedWatch pricing cited in Tuesday morning coverage showed roughly a 90% probability of a hold and about 10% odds of another quarter-point hike, with close to 80% odds of an increase in December. This is a non-projection meeting, so no updated dot plot accompanies the statement.
Equities were quiet ahead of the decision. Stocks closed higher Monday, with the Dow up 146.42 points to 52,361.58, the S&P 500 up 0.7% to 7,676.77 and the Nasdaq Composite up 214.04 points to 26,169.38, lifted by renewed AI enthusiasm after Anthropic filed its IPO prospectus. In Tuesday morning trading the Dow slipped while the S&P 500 and Nasdaq edged higher, with the 10-year Treasury yield near 5.00% and gold around $4,036 an ounce.
For now, housing is caught between the two forces: prices too sticky to fall outright, and borrowing costs too high to let buyers back in.
Sources: S&P Cotality Case-Shiller Home Price Indices (August 2026 release, October 27, 2026); Calculated Risk; Federal Housing Finance Agency; Freddie Mac Primary Mortgage Market Survey (October 22, 2026); Mortgage Bankers Association; Real Estate News; CME FedWatch; Yahoo Finance; Benzinga