Mortgage Demand Surges as 10‑Year Treasury Yield Falls Below 4% — Playbooks for Buyers, Sellers, and Real‑Estate Investors
A sharp bond rally—punctuated by the 10‑year Treasury yield testing sub‑4% intraday and closing near 4.01% on Sept. 11 before edging back to ~4.06% on Sept. 12—pulled mortgage rates to their lowest levels in nearly a year. Average 30‑year fixed quotes fell into the low‑to‑mid 6% range on the latest weekly read (about 6.35%), with some lenders briefly pricing high‑5% scenarios for top‑tier borrowers during the downdraft. Borrower response was immediate: total mortgage applications jumped 9.2% week over week, the strongest since 2022, with refinances up 12% and purchases up 7%. Adjustable‑rate mortgages also saw renewed interest, reflecting a wider spread versus fixed loans. This report explains the mechanics behind the move, quantifies the payment impact, and delivers clear playbooks for buyers, sellers, and investors—along with risk controls if rates snap back.