US Housing Stock Growth Outpaces Population, Vacant Units Surge

Over the past 12 months through Q1, the US housing stock grew by 1.41 million units, providing homes for 3.2 million people at average household size. However, population growth has slowed dramatically amid a crackdown on illegal immigration, with only 757,000 people expected to be added in the 12 months through July 2026. The total housing stock now stands at 149.0 million units. Over five years, the stock grew by 7.4 million units, accommodating 17 million people, while population grew by 10.4 million. Vacant housing units on the market for rent or sale rose 4.4% year-over-year to 4.7 million, the highest since mid-2017, and surged 19.4% over two years. For-rent vacancies hit 3.67 million, up 6.1% year-over-year and 15.4% over two years, the most since 2014. For-sale vacancies jumped 6.1% to 1.0 million, up 37% over two years. A growing number of "accidental landlords"—sellers who failed to sell at wishful prices and shifted properties to rental—are contributing to the rental vacancy surge, as identified by Zillow. The for-sale market remains frozen, with existing home sales down about 25% from pre-pandemic levels and 43% from the 2005 record. The Census Bureau data also shows 11.9 million year-round vacant units (8.0% of total stock), of which 6.4 million are held off the market as shadow inventory. The article argues that the housing market needs more supply amid slowing population growth, and these dynamics are moving in the right direction.