The debate over who should own the nation’s single-family housing stock has moved to the center of congressional attention. A group of Senate Democrats led by Elizabeth Warren and a separate bipartisan pairing that includes Josh Hawley and Jeff Merkley have introduced proposals aimed at limiting purchases by large corporate buyers and changing tax treatment for big portfolios. At issue are both market effects — how bulk buying influences prices and rents — and the tax and financing advantages some buyers currently enjoy.
Policymakers argue these changes will help protected prospective homebuyers from competing with well-capitalized entities, while critics warn about unintended consequences for smaller landlords and local markets.
Two prominent proposals frame the fight. The first, the American Homeownership Act backed by Warren, Merkley, Chris Coons and others, focuses on removing key tax benefits and federally backed financing from companies that acquire more than 50 single-family homes. The second, the Homes for American Families Act, would amend the Sherman Antitrust Act to bar funds with over $150 million in assets from purchasing single-family homes, condos, or townhouses, with enforcement left to the Justice Department’s antitrust division. Both bills share a common goal — reduce large-scale investor competition in the owner-occupied housing market — but they use different legal tools and thresholds to do it.
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How the bills would change deductions and purchasing power
Under the Warren-led measure, corporations that cross the 50-unit line would lose the ability to claim prominent tax benefits such as depreciation and mortgage interest deductions for those properties, and would be barred from accessing federally backed mortgages and certain foreclosure sales from federal agencies. The bill also appears to preserve limited exceptions for buyers who rehabilitate deeply distressed properties, allowing rehab deductions for qualifying projects, though those carve-outs do not clearly apply retroactively. The other proposal attacks the problem through competition law, making purchases by large private-equity or hedge funds unlawful if those funds exceed the $150 million assets threshold, aiming to curb bulk acquisitions rather than reshape tax incentives.
Political dynamics and alternative legislative tracks
Legislative activity has been fluid and at times bipartisan. The Trump administration previously spotlighted the issue with its own proposals to cap purchases by investors who already held large portfolios — a proposal that moved from a 100-home limit to a higher threshold after negotiation, and a newer legislative effort titled the 21st Century ROAD to Housing Act surfaced with provisions that include incentives for construction and renovation as well as limits on investor purchases. A recent iteration reportedly expanded the ban to cover entities owning as many as 350 single-family homes, reflecting political bargaining and an interest in coupling supply-side solutions with investor limitations.
Who bears the burden and where it matters most
National figures mask regional concentrations: although institutional investors account for only a small percentage of single-family rentals overall — about 3.8% nationally — their presence is much larger in some Sunbelt markets. A 2026 Urban Institute analysis found institutional ownership approaching 28.6% in Atlanta, roughly 20% in Charlotte and around 9% in Houston. That geographic imbalance means any law aimed at bulk buyers would have outsized effects in certain metro areas, potentially altering rental markets and the availability of affordable homes in places where investor activity was once low but surged after market downturns.
Supply challenges, expert skepticism, and investor options
Many analysts emphasize that limited housing supply — driven by land costs, zoning bottlenecks, and construction constraints — is the core affordability problem, and that curbing investor purchases is unlikely to be a comprehensive solution. Some experts express skepticism about the practical impact of investor-targeted legislation on prices. For landlords and smaller investors anxious about legislative shifts, straightforward portfolio strategies exist: using a 1031 exchange to trade single-family units into two-to-four-unit properties or focusing on small multifamily assets can preserve tax advantages while steering clear of thresholds that these bills address. Those tactics underline how regulatory design and investor behavior will interact if new rules become law.
Practical takeaways for landlords and buyers
For property owners and potential homebuyers, the near-term landscape is one of uncertainty and preparation. Track which bill advances, because thresholds and definitions — including whether rules apply retroactively — will determine who is affected. Small-scale landlords should evaluate tax deductions, financing alternatives, and the viability of converting some holdings into multifamily units to maintain benefits. Policymakers and market participants alike must also weigh supply-side measures in parallel to investor restrictions if the goal is broader, sustainable affordability. In short, the proposals change incentives and invite investors to reassess structures, while leaving the larger puzzle of housing supply unresolved.
