Household growth is slowing sharply across the United States, but Harvard researchers say the impact on the multifamily sector may be less severe than expected. The Joint Center for Housing Studies at Harvard University forecasts that household growth will average just 840,000 per year through 2025, a steep drop from the 1.5 million formed annually over the past decade. Yet the shift is expected to disproportionately favor rental demand, as more Americans opt to rent instead of buy amid affordability pressures and shifting social trends, according to Yardi Matrix, which featured the study in a recent report.
The projected slowdown stems from several demographic and policy factors. The U.S. birth rate remains at its lowest level in more than 40 years, leaving immigration as the primary driver of household formation. But that source of growth appears to be weakening. Federal data shows about six million immigrants entered the country between 2023 and 2024, though housing analysts expect that pace to fall sharply. John Burns Real Estate Consulting estimates immigration will decline by as much as 76% in 2025 due to tighter border restrictions and increased deportations under current government policy.
Such a steep decline could weigh heavily on gateway cities that have long depended on new arrivals, including New York, Los Angeles, Boston, Miami and San Francisco. Secondary markets that have experienced strong population gains in recent years—such as Orlando, Austin, Houston, Dallas and Atlanta—are also likely to feel the effects, noted Chris Urwin of Real Global Advantage.
Even so, Harvard researchers expect rental housing demand to remain robust. The study projects that about 2 million new renter households will be added in 2024 and 2025, nearly twice the long-term average. Persistent affordability challenges are keeping more potential buyers in the rental market. Home purchases have slowed under the weight of high prices and elevated mortgage rates, while renting is now approximately 40% cheaper than owning a comparable home.
Social shifts are reinforcing the trend. Many younger adults are delaying marriage and family formation—life stages traditionally associated with homeownership—and are instead seeking flexibility and higher-quality rental options that cater to higher-income tenants.
Harvard’s analysis also points to a continuing moderation in homeownership. The center projects a 1.6 percentage point decline in the national homeownership rate, with growth expected to average just 337,000 per year—roughly half the pace seen since 2000. While the forces behind this slowdown may challenge builders and policymakers, they signal ongoing strength in the U.S. rental market at a time when access to ownership remains financially out of reach for many households.
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