The United States housing market is experiencing a widening gap between the number of new households forming and the pace of new home construction. Despite steady demand driven by various age groups, a decade-long trend of underbuilding has led to a significant housing shortage, impacting affordability and market dynamics.
Key Takeaways
- Household formation is robust across different age demographics, including older adults and middle-aged families.
- The U.S. has been underbuilding housing since at least 2012, resulting in a cumulative deficit of over 4 million homes by 2025.
- New construction starts in 2025 fell short of the number of new households formed, exacerbating the existing housing gap.
- Rental markets have normalized more quickly than for-sale markets due to a greater increase in multifamily construction.
- Affordability remains a major challenge, with the median age of first-time homebuyers reaching 40 and significant income required to purchase a starter home.
Demand Driven by All Generations
Contrary to concerns about demand, Americans continue to form new households, driven by various life stages and preferences. Data from Realtor.com and the National Association of REALTORS® (NAR) indicates that household growth is steady. Notably, between 2023 and 2024, the most significant increases in household formation came from individuals aged 65 and older. Simultaneously, household growth among adults aged 35-44 has remained strong since 2019, reflecting ongoing family formation and life-stage transitions.
A Persistent Housing Deficit
The core issue lies in the persistent underbuilding of housing. Realtor.com data reveals that the U.S. has been constructing fewer homes than needed to keep pace with household formation since at least 2012. This has led to a cumulative housing gap that grew from an estimated 1.5 million homes in 2012 to approximately 4.03 million homes by 2025. In 2025 alone, approximately 1.4 million households were formed, while only 1.36 million new homes were started, widening the deficit by about 50,000 units.
Construction Trends and Market Normalization
While overall construction activity has seen fluctuations, the gap between new households and new homes persists. Single-family home starts declined in 2025 compared to the previous year, while multifamily starts saw an increase. This shift has contributed to a faster normalization of rental conditions compared to the for-sale market. Rental vacancy rates have returned to pre-pandemic levels, while homeowner vacancy rates remain historically low, indicating a tighter market for those looking to buy.
Affordability Challenges and Regional Disparities
The housing shortage significantly impacts affordability. NAR data highlights that the median age for first-time homebuyers reached 40 in 2025, suggesting that many younger adults are delaying homeownership due to financial barriers. An estimated 1.8 million "missing" households among Gen Z and millennials represent individuals who would likely have formed their own households under more favorable conditions. The income required to purchase a starter home and the time needed to save for a down payment remain substantial hurdles.
The housing shortage is a widespread issue, though its severity varies by region. The South accounts for the largest portion of the housing gap, while the West has the smallest. However, the Northeast and Midwest are considered the most undersupplied regions, meaning they have not built enough housing to meet demand over time. With household formation continuing and the housing deficit in the millions, supply remains the primary constraint in the U.S. housing market.