The American housing market has undergone a seismic transformation over the past decade. In the wake of the 2007–2009 financial crisis, large institutional investors began acquiring single-family homes at scale, converting them into long-term rental assets and fundamentally altering the competitive landscape for individual homebuyers. What began as a strategy to stabilize distressed markets has since evolved into a permanent fixture of the housing economy, with the largest firms amassing portfolios of tens of thousands of homes concentrated in high-growth metropolitan areas across the South and Southwest. This concentration, combined with persistently elevated mortgage rates, a structural undersupply of housing, and rising construction costs, has fueled a bipartisan political consensus that legislative intervention is necessary to preserve homeownership opportunities for American families. That consensus has produced an unprecedented wave of legislative action. This article examines the most significant of those developments and outlines what real estate developers and investors need to know.

I. The 21^st Century ROAD to Housing Act: A Federal Ban on Large Institutional Investor Purchases

The 21st Century ROAD to Housing Act (the “Act”) became law on July 11, 2026, after passing 358–32 in the U.S. House of Representatives and 85–5 in the U.S. Senate. For investors and developers, the trigger is scale: a for-profit entity that controls 350 or more single-family homes—including through related entities—qualifies as a “large institutional investor” (“LII”). The Act bars LIIs from future acquisitions of one- or two-unit homes; manufactured homes are excluded. The prohibition takes effect January 7, 2027, and sunsets January 7, 2042.

Violations can cost up to $1 million or three times the purchase price, whichever is greater, and either the Secretary of the Treasury or the Attorney General may enforce the ban. LIIs must report annually to the U.S. Department of Housing and Urban Development (“HUD”). The Act does not force the sale of existing holdings; it is forward-looking and applies only to future acquisitions. Here, however, is the critical nuance for developers: the law was not designed to shut down new construction.

The exceptions are short, but strategically important:

• New or renovated homes for sale to non-covered buyers;
• Build-to-rent homes;
• Substantially rehabilitated homes;
• Qualified homeownership programs;
• Foreclosure-related acquisitions;
• Purchases from other covered investors;
• Purchases from non-covered investors within two years; and
• Senior communities for residents age 55+.

Build-to-rent, ground-up development, and substantial rehab remain viable paths. A developer that constructs a 200-home rental community from the ground up, for example, falls squarely within the build-to-rent exception even if the institutional buyer already controls well over 350 homes.

II. State Efforts to Address the Housing Crisis: Tennessee’s Proposed Restrictions and the National Landscape

While the 21st Century ROAD to Housing Act establishes a federal baseline, states are not waiting for Washington to act alone. Across the country, legislatures have introduced—and in some cases enacted—their own restrictions on corporate ownership of single-family homes, often with lower thresholds and broader reach than the federal law.

Tennessee’s “Homes Not Hedge Funds” Act (S.B. 242/H.B. 298) would bar entities with 100 or more single-family rental homes from buying additional single-family homes in counties with populations over 150,000. S.B. 242 passed the Tennessee Senate 31–1 but died in a Tennessee House of Representatives subcommittee in March 2026 for lack of a second. Despite this setback at the state level, the pressure is not going away; it is moving to local governments. Knox County is now advancing a local version of the measure, signaling that developers may face restrictions even where statewide measures stall.

Beyond Tennessee, legislatures in other states are advancing their own restrictions on corporate homeownership. To date, the most significant enactment is Michigan’s H.B. 6074, signed into law in July 2026 with immediate effect. Michigan’s law imposes a 100-home ownership cap on institutional investors with a net value of $375 million or more, with civil fines of up to $25,000 per violation. Several other states have introduced legislation that remains pending:

• Arizona (H.B. 2325): Would cap corporate ownership at 50 single-family homes and bar institutional investors from bidding on homes during the first 60 days on the market.
• Minnesota (H.F. 2687 / S.F. 4102): Would prohibit private-equity firms from owning single-family properties and cap other corporate ownership at 50 homes.
• New Jersey (A5143 / S3226): Would restrict purchases by institutional investors.
• Connecticut (S.B. 256): Would impose waiting periods on private-equity purchases of residential property.

Bills have also been introduced across the political spectrum in California, Kentucky, Nebraska, North Carolina, Utah, and Virginia, reflecting the breadth of this legislative movement. The practical takeaway: the federal 350-home threshold is a floor, not a ceiling—states are setting the bar much lower.

III. Preparing for the New Landscape: What Real Estate Developers and Investors Need to Know

The legislative landscape for corporate ownership of single-family homes is shifting rapidly. In light of these changes, the following steps should be at the top of every developer’s compliance agenda:

• Audit your portfolio. Count every single-family home you control, whether directly or through affiliates, joint ventures, or management agreements. Federal law aggregates holdings across related entities, and state laws may count holdings differently.
• Map your exceptions. Identify active and planned projects that qualify as build-to-rent, substantial rehabilitation, or another exemption. Document the classification now, not at closing.
• Build your compliance calendar. HUD reporting and the Renter Outreach Resource launch January 7, 2027. If you are at or near 350 homes, track acquisition activity and prepare for annual filings.
• Watch the states. Michigan’s law is already live. Arizona, Minnesota, New Jersey, and Connecticut could follow. Monitor every state where you operate and the counties within them.
• Talk to counsel. Review entity structures, forward-purchase commitments, and take-out agreements against the new rules. Do it before January 2027, not after.

The era of unchecked institutional acquisition of existing single-family homes is ending. For developers willing to build, rehabilitate, and create new supply, the law leaves real room to operate. The challenge is not the ban itself; it is navigating a patchwork of federal, state, and local rules that will only grow more complex. The developers who plan now will be best positioned when the dust settles.