Seventy-six members of Congress have signed a letter opposing a proposed ban on institutional investors owning more than 350 single-family homes. The bipartisan pushback threatens to derail the most ambitious housing reform bill in decades. The letter, led by co-chairs of the Real Estate Caucus and the Build America Caucus, urges House Speaker Mike Johnson to "strip or substantially revise" Section 901 of the 21st Century Road to Housing Act. That provision, passed in the Senate version, would ban institutional investors from owning more than 350 single-family homes and force build-for-rent developers to sell after seven years.
The Big Picture
The letter, signed by members of the Real Estate Caucus and the Build America Caucus, urges House Speaker Mike Johnson to "strip or substantially revise" Section 901 of the 21st Century Road to Housing Act. That provision, passed in the Senate version, would ban institutional investors from owning more than 350 single-family homes and force build-for-rent developers to sell after seven years.
President Donald Trump has publicly endorsed the ban, citing polls showing widespread public frustration with investors. A Harris Poll found 76% of Americans believe investors are driving up housing costs. But the opposing lawmakers argue the ban would reduce housing supply, the opposite of what the market needs. "By effectively banning build-to-rent housing, Section 901 will force working families to limit family size and place home ownership further out of reach," said Rep. Celeste Maloy, co-chair of the Build America Caucus. The tension between public opinion and economic evidence is at the heart of the debate: while voters demand action against investors, economists warn the ban could eliminate up to 72,000 new housing units annually, according to the Urban Institute.
“"After decades of inaction, our solution to the nationwide housing shortage cannot be a bill that further limits housing supply."”
By the Numbers
- 76 lawmakers: Signed the letter opposing Section 901, a significant bloc that could tip the scales in the House-Senate conference. Of these, 52 are Republicans and 24 are Democrats, reflecting bipartisan opposition.
- 76% of Americans: Believe institutional investors are raising housing costs, per The Harris Poll. However, only 12% know that investors own less than 3% of all single-family homes.
- 72,000 units per year: The contribution of institutional investors to new housing supply, according to the Urban Institute. This represents roughly 5% of annual single-family construction.
- 350 homes: The ownership threshold that would trigger the ban under the Senate bill. This limit would affect about 200 investors nationwide, per Mortgage Bankers Association estimates.
- 7 years: The maximum period build-for-rent developers could hold properties before forced sale. This would discourage new rental community construction.
Why It Matters
The congressional battle exposes a fundamental tension: public opinion wants to rein in investors, but housing experts warn a poorly designed ban could backfire. The largest investors own a tiny share of the overall market (less than 3% of single-family homes), but they are concentrated in certain cities like Atlanta, Phoenix, and Charlotte, making their impact visible. Meanwhile, mom-and-pop investors collectively buy far more homes (about 20% of the market), yet no one proposes limiting them.
The Mortgage Bankers Association and the National Association of Homebuilders publicly oppose the ban. NAHB Chair Bill Owens praised the lawmakers for "calling out the unintended consequences of this mandate on much-needed housing options." At a time when the U.S. housing market is millions of units short of demand, the bill must increase supply, said Rep. Josh Harder, a California Democrat. Additionally, the ban could have spillover effects on the rental market: by reducing the supply of single-family rentals, middle-income renters would be forced to compete for multifamily apartments, driving up rents in that segment.
What This Means For You
If you're an investor, regulatory uncertainty is the biggest near-term risk. Until the conference committee resolves the language, large portfolio transactions may freeze. For homebuyers, the news is mixed: a ban could reduce competition in some markets, but it would also discourage new rental construction, keeping prices elevated. Build-for-rent developers face the most immediate risk: if Section 901 survives, projects in planning could be canceled.
- 1Investors: Review your single-family portfolio. If you own more than 350 homes, prepare for potential forced divestitures. Consider diversifying into multifamily or unaffected REITs. Also explore converting properties to short-term rentals, which are not covered by the ban.
- 2Homebuyers: Don't expect an immediate price drop. Supply remains the core issue. Monitor markets with high institutional concentration, like Atlanta or Phoenix, as they may see a slight decrease in competition if the ban passes.
- 3Developers: The seven-year forced sale language is lethal for build-to-rent projects. Lobby to remove it or extend the timeline to 15 or 20 years. Also consider structuring projects as housing cooperatives to avoid classification as an institutional investor.
What To Watch Next
The next step is the House-Senate conference to reconcile the two versions of the bill, set to begin May 15. The letter from 76 lawmakers increases pressure on Speaker Johnson to drop Section 901. Also watch for Trump's statements: if he doubles down on the ban, Republican conferees may feel compelled to keep it. However, sources close to the White House indicate Trump is open to compromise, such as raising the threshold from 350 to 1,000 homes.
The Congressional Budget Office will release a cost and supply impact analysis on May 10. That report could be decisive for undecided lawmakers. Also, the National Association of Realtors is expected to publish a study on investor impact on prices, which could provide data for both sides of the debate.
The Bottom Line
The most consequential housing reform in decades hangs in the balance. The institutional investor ban is popular, but its unintended consequences could worsen the supply crisis. The outcome hinges on whether lawmakers prioritize supply over sentiment. If Section 901 survives, the single-family rental market will take a hit and new construction will slow. If it's stripped, affordability may persist, but at least construction won't be choked off. For investors and developers, the key is to prepare for both scenarios and maintain sufficient liquidity to navigate uncertainty.
