Based on new data from Redfin, U.S. builders obtained permits to construct 13 multifamily housing units for every 10,000 people in the U.S. so far this year, down nearly 30% from an average of 18 during the same periods in 2021-2023. Multifamily building permits have dwindled not because they're harder to get, but because builders are seeking fewer of them. Here are two reasons builders are seeking fewer...