Renting is the dominant form of housing tenure for a large portion of American households — roughly 36 percent by the most recent Census estimates. For many, renting is a practical or preferred choice. For a growing share, it is a condition that leaves them financially stretched each month, devoting dollars to housing that could otherwise go toward savings, health care, education, or retirement. The concept of rent burden names that condition, and the data on how widely it has spread in the United States reveals something significant about the state of the rental market.
What Rent Burden Means
The 30 percent threshold is the standard reference point in American housing policy. The federal government established this benchmark in the early 1980s, originally as a guideline for public housing rent levels. It has since become the default definition: a household spending more than 30 percent of its gross monthly income on housing costs — rent plus utilities — is considered cost-burdened. Households spending more than 50 percent are considered severely cost-burdened.
The threshold has been criticized from multiple directions. Some analysts argue it is too generous — that 30 percent is already a heavy share for very low-income households, where the remaining 70 percent may still be insufficient for food, transportation, and medical expenses. Others argue it does not account for household composition, geographic variation in other costs, or the trade-off between housing quality and price that renters in different markets face. Still, as a consistent, comparable measure applied across decades and geographies, it remains the dominant instrument for assessing housing affordability in research and policy.
How Many Renters Are Cost-Burdened
According to the Harvard Joint Center for Housing Studies’ State of the Nation’s Housing report, approximately half of all renters in the United States were cost-burdened as of the early 2020s — meaning they spent more than 30 percent of income on housing. Of those, roughly one in four was severely cost-burdened at the 50 percent threshold. These figures have remained stubbornly elevated for more than a decade, and the period of rapid rent increases between 2021 and 2023 pushed them higher.
The burden is not evenly distributed. Lower-income renters bear a disproportionate share. Among renters earning less than $30,000 annually, the cost-burdened share consistently exceeds 70 percent in national surveys. Renters in high-cost metro areas face particularly acute pressure: in cities like Miami, Los Angeles, New York, and Boston, median rents consume a substantially larger share of median renter income than the national average. In Miami, which ranked among the most rent-burdened large metros in recent years, the typical renter household was spending close to 60 percent of income on rent.
Race and ethnicity intersect with rent burden significantly. Black and Hispanic renter households are cost-burdened at higher rates than white non-Hispanic renters, a gap that reflects both income disparities and the geographic concentration of these populations in expensive urban markets. The Pew Research Center and the Urban Institute have documented these patterns across multiple data cycles.
Why Rents Have Risen
Rent growth in the United States accelerated dramatically in the years following the COVID-19 pandemic. National median rents rose more than 25 percent between early 2021 and late 2022, according to tracking from Apartment List. While some markets saw moderation in 2023 and 2024, rents in most metros remained substantially above pre-pandemic levels in nominal terms, and income growth did not keep pace for most renter households.
Several factors drove this acceleration. First, the pandemic disrupted household formation in ways that temporarily suppressed demand, then released it suddenly when restrictions lifted and remote work enabled relocations. Millions of households formed or moved simultaneously, overwhelming available inventory. Second, migration patterns shifted. Renters from high-cost coastal markets moved to mid-sized metros in the South and Mountain West — cities like Austin, Phoenix, Nashville, and Raleigh — pushing rents sharply upward in markets that had previously been affordable relative to incomes.
Third, and more structurally, the United States entered the pandemic already short on rental housing supply, particularly at lower price points. Decades of underbuilding relative to household formation, discussed in detail in the article on housing supply, meant there was little cushion to absorb demand spikes. New apartment construction takes years to deliver, so the supply response to rising rents in 2021 and 2022 did not arrive in significant volume until 2024 in many markets — and even then, most new units came online at high-end price points inaccessible to cost-burdened renters.
Fourth, inflation in operating costs — insurance, property taxes, maintenance, utilities — flowed through to rents as landlords adjusted pricing to protect margins.
Corporate Landlords and Market Concentration
The structure of landlord ownership has shifted over time, a trend that has drawn increasing attention from researchers and policymakers. Historically, much of the rental market — particularly single-family rentals and small multifamily properties — was held by individual investors and small operators. That picture has changed at the institutional level. Large corporations and private equity-backed entities entered the single-family rental market aggressively after the 2008 financial crisis, when foreclosed homes became available at distressed prices. Invitation Homes, American Homes 4 Rent, and similar platforms grew rapidly by acquiring and renting single-family properties at scale.
A 2022 analysis by the Pew Charitable Trusts and other researchers found that institutional investors — defined as entities purchasing 10 or more properties — accounted for a rising share of home purchases in certain metro areas, with particular concentration in the Sun Belt. Their presence has been linked in several academic studies to faster rent growth and lower vacancy rates in affected zip codes, though the evidence on causality remains debated.
Larger multifamily operators — companies managing thousands of apartment units across multiple markets — also grew through this period through consolidation and new construction. The concern raised by tenant advocates is that large, coordinated operators have both the incentive and the data tools to raise rents more systematically than fragmented individual landlords might. Some researchers have pointed to the use of algorithmic pricing software, such as the RealPage Revenue Management system, as a mechanism through which correlated pricing behavior spreads across operators in a given market. The Department of Justice opened an investigation into RealPage’s practices in 2023.
Short-Term Rentals and Housing Stock
The rise of platforms like Airbnb and Vrbo introduced a new variable into local housing markets: the conversion of long-term rental units into short-term accommodations. When a landlord earns more from nightly rentals to tourists than from monthly leases to residents, the financial incentive to convert is straightforward. At the margin, this reduces the supply of housing available to long-term tenants.
The magnitude of the effect has been studied extensively, with somewhat variable findings. Research published in academic journals has generally found that short-term rental penetration is associated with modest but measurable increases in rents and decreases in rental vacancy rates in urban markets, particularly in tourist-heavy neighborhoods. The effect is larger in cities with strong tourism demand and tight overall housing supply. A widely cited 2019 study estimated that a 1 percent increase in Airbnb listings in a neighborhood was associated with roughly a 0.4 percent increase in rents and a 0.2 percent decrease in rental supply in that neighborhood.
Many cities and states have responded with regulations ranging from registration requirements and cap limits to outright bans on whole-unit short-term rentals in residential areas. New York City implemented strict enforcement of short-term rental registration rules in 2023, and early data suggested the policy removed tens of thousands of listings from platforms within months, though the housing market impact remained to be assessed.
The Gap at the Bottom of the Market
The deepest rent burden concentrates where incomes are lowest. The National Low Income Housing Coalition’s annual Out of Reach report calculates what it calls the “Housing Wage” — the hourly wage required to afford a two-bedroom rental at fair market rent while spending no more than 30 percent of income. In 2023, the national Housing Wage for a two-bedroom unit exceeded $28 per hour, well above the federal minimum wage of $7.25 and above many state minimum wages as well.
For households earning at or near minimum wage, this gap between what the market demands and what income supports is not a minor inconvenience. It is a structural condition — one that means full-time employment is no guarantee of housing stability. The rental market, taken as a whole, produces a distribution of units weighted toward those who can afford market-rate or near-market-rate rents. The production of deeply affordable units — those accessible to households in the bottom two income quintiles — requires subsidy that market forces alone do not generate.
The rent burden problem, in this sense, is not primarily a story of irresponsible spending or misaligned priorities. It is a story about the arithmetic of wages relative to rents in a market that does not naturally produce enough housing at price points accessible to lower-income households.
This article was researched and drafted with AI assistance under human review. See our full AI and editorial practices.