To Moira Gallagher, 38, buying a house in Anchorage would be a step toward financial stability for her growing family. But even with a six-figure household income and stable jobs, she and her husband have struggled to make a purchase.

High mortgage rates, limited housing supply and historically poor affordability have kept buying a home stubbornly out of reach for Ms. Gallagher, an economic researcher who is expecting her third child. Three- or four-bedroom homes in good school districts are both hard to come by and prohibitively expensive.

“It makes it hard to feel secure,” she said. “It affects everything.”

From Anchorage to Amsterdam, many developed and even emerging economies are confronting a similar problem: Housing supply is failing to meet demand, helping to push home prices to levels that are out of reach even for middle-income families.

Affordability problems have been exacerbated by high central bank interest rates, which officials across the globe have been using to tackle rapid inflation. Those policy rates trickle through financial markets to elevate mortgage rates — making it even more expensive for borrowers to buy a home and for builders to finance construction for new houses and apartments.

The second part of that equation is now poised to change. Central banks in many economies are lowering interest rates or preparing to do so imminently. The European Central Bank and Bank of England are already cutting borrowing costs, and the chair of the U.S. Federal Reserve signaled last week that it would start reductions in September.

But those rate cuts are unlikely to be a panacea for housing affordability.

While the shift in central bank stance is already translating into somewhat lower mortgage rates in many countries, borrowing costs are not expected to fall back to the levels that prevailed during the 2010s. Several economists said 30-year mortgage rates in the United States, for instance, could end up in the 5.5 to 6 percent range, down from their 7.5 percent peak last year but still up notably from the 4 percent that was normal before the pandemic.