Borrowing costs on 15-year fixed-rate mortgages, popular with homeowners refinancing their home loans, also fell. The average rate slipped to 5.41 percent from 5.5 percent last week. A year ago, it was 5.15 percent, Freddie Mac said.

Mortgage rates are influenced by several factors, from the Federal Reserve's interest rate policy decisions to bond market investors' expectations for the economy and inflation.

Rates generally follow the trajectory of the 10-year Treasury yield, which lenders use as a guide to pricing home loans. The yield was at 4.12 percent in midday trading Thursday, up from 4.06 percent late Wednesday.

Mortgage rates have been mostly declining since late July amid expectations that Fed would cut rates for the first time since last year. As expected, the central bank delivered a quarter-point cut Wednesday and projected it would lower its benchmark rate twice more this year, reflecting growing concern over the US job market.

The average rate on a 30-year mortgage is now at its lowest level since Oct. 3, when it was 6.12 percent.

The late-summer slide in mortgage rates has been a welcome trend for the housing market, which has been in a slump since 2022, when mortgage rates began climbing from historic lows. Sales of previously occupied US homes sank last year to their lowest level in nearly 30 years and have remained sluggish so far this year as the average rate on a 30-year mortgage has mostly hovered above 6.5 percent.

"Mortgage rates have eased into the low 6 percent range, a shift that should support a modest pickup in home sales in the coming months," said Jiayi Xu, senior economist with Realtor.com. "However, the broader impact will remain limited, as 81 percent of homeowners still hold mortgages below 6 percent, reducing incentives to sell or move."

Still, the pullback in mortgage rates has led to a surge in homeowners who bought in recent years after rates climbed above 6 percent to refinance now to a lower rate.

Mortgage applications, which include loans to buy a home or refinance an existing mortgage, jumped nearly 30 percent last week from the previous week, according to the Mortgage Bankers Association.

Applications for mortgage refinancing loans made up nearly 60 percent of all applications last week.

Demand for adjustable-rate mortgages, or ARMs, is also up sharply. Applications for ARMs accounted for about 13 percent of all loan applications. That's the biggest share since 2008, in the aftermath of the 2000s housing bust.

The Fed's rate cut makes ARMs more attractive, as the rates on those loans closely follow the central bank's action on short-term interest rates, said Bill Banfield, chief business officer at mortgage lender Rocket Cos.

Average rate on a 30-year mortgage falls again, dips to lowest level since early October - The Boston Globe