US mortgage rates jumped for a fourth straight week, reaching the highest point in six months and dampening prospects for the crucial spring season as the Iran war roils markets. The average rate for 30-year, fixed loans climbed to 6.38%, the highest since September 2025 and up from 6.22% last week, according to data from Freddie Mac Thursday. At the current 30-year average, borrowers with a $1 million loan would pay about $6,242 a month, not including insurance and taxes. That is up from $5,983 in late February when rates briefly dipped below 6% right before the US-Israeli bombing campaign began. Clear Investment Group CEO Amy Rubenstein joins Bloomberg Businessweek Daily to discuss, plus the state of affordable housing. She speaks with with Carol Massar and Tim Stenovec.