September began with the average 30-year fixed mortgage rate near 6.8%. By month’s end it had reached 7.6%, a rapid climb that hit prospective buyers precisely when they were deciding whether to sign contracts.¹

The result was a sharp retreat in demand. Pending sales of existing homes fell 7.3% from August and 11.3% from a year earlier, dropping across every region. Lawrence Yun, the National Association of Realtors’ chief economist, said that while jobs and incomes can support purchases, “housing affordability is more affected by changes in mortgage rates.”¹

Construction weakened alongside resale demand. Single-family starts fell 4.6% in September, while overall housing starts slipped 5.2% to a 1.22 million annual rate; permits, a gauge of future building, also declined. Builders are not merely confronting reluctant buyers: higher borrowing costs and competition for labor, concrete, copper and HVAC equipment are making projects harder to finance and complete.²

By October, the strain had become unmistakable in industry sentiment. The National Association of Home Builders’ measure sank to its lowest point in 14 years, with sales conditions, expectations and buyer traffic all deteriorating. Robert Dietz, the group’s chief economist, said demand remained, but “higher mortgage rates, elevated construction costs and weaker consumer confidence are keeping more buyers on the sidelines.”¹

The two accounts converge on an uncomfortable stalemate. Buyers cannot comfortably afford to enter the market, while builders cannot easily afford to add supply. Ben Ayers of Nationwide Financial expects construction to remain “moribund into 2027,” as builders use price cuts and incentives to move existing projects rather than launch new ones.¹ That leaves a sector already short of homes absorbing the full force of high rates—and an affordability crisis with no quick thaw in sight.