An investor that controls 349 single-family homes could keep bidding after Jan. 7, 2027. One that controls 350 generally could not. Treasury’s October 22 proposal writes the rules for that line, defining who counts as a large institutional investor and which purchases are excused. The rules are still a draft, with comments open for 30 days after Federal Register publication.
Where the 350-home line falls in Treasury’s draft
Under Treasury’s description, a large institutional investor is an entity engaged in the business of investing in, owning, renting, managing or holding single-family homes that has direct or indirect investment control over at least 350 such homes. The count is of homes held, not purchases made. Treasury’s announcement does not say how homes are tallied across affiliates or over what period.
The draft also defines “in the business of.” An entity qualifies when it holds homes to earn income or financial gain, not incidentally to another business. Passive investors get their own test, based on shared directors and officers and on property control rights. A property control right is a consent, approval or veto power over another entity’s decisions about a home.
The covered conduct is broad. The Federal Register notice quotes the statute’s scope as “mergers, acquisitions, construction, foreclosures, or bulk purchases, whether or not for cash consideration.” A large investor that takes title to a house through a foreclosure or builds one itself is therefore reached by the same ban as one that writes a check at closing.
The Jan. 7 date comes from the statute, not the proposal
Treasury says the proposed rules carry out Section 1001 of the 21st Century ROAD to Housing Act. The Federal Register notice counts the start from 180 days after enactment, which it gives as January 7, 2027, with the Act enacted July 11, 2026. From that date, a large institutional investor generally may not buy, or contract to buy, a single-family home unless the purchase is an excepted one.
The policy goes back to a January executive order. Executive Order 14376, dated January 20, 2026, stated that large institutional investors should not buy single-family homes that families could otherwise buy. It gave the Treasury Secretary 30 days to define “large institutional investor” and “single-family home.” Treasury Secretary Scott Bessent said the administration “continues to restore the path to affordable homeownership for millions of young and working families.”
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The order reached beyond Treasury. It told HUD to require owners and managers of federally assisted single-family rentals to disclose their direct or indirect owners and affiliates, and told the Attorney General and the FTC chair to review large-investor acquisitions for anticompetitive effects. The Treasury proposal does not estimate how many investors or homes meet the 350 mark.
Build-to-rent, renovate-to-rent and the other exceptions
The law excuses purchases made under build-to-rent programs, renovate-to-rent programs, homeownership programs and programs to boost homeownership. The Federal Register notice adds three more categories: satisfying previously contracted debts, loss mitigation or servicing compliance, and purchases from another large institutional investor.
Treasury’s draft sets safe harbors for the middle two. For renovate-to-rent, one test is whether a home was substantially rehabilitated, bringing neglected property back into supply and up to code. For homeownership programs, the tests are whether a renter received meaningful financial support toward buying the home, or a right of first refusal and a 30-day first-look period.
The January order had asked for narrowly tailored exceptions for build-to-rent properties planned and built as rental communities. The safe harbors are described as non-exclusive, so an investor can try to qualify another way. Which purchases fit each exception is what the 30-day comment period is meant to test.
The penalty: $1 million or three times the structure’s price
The notice states civil penalties of up to the greater of $1 million or three times the purchase price of the property. It defines that price as the portion attributable to the value of the structure. For a $400,000 house with a $300,000 structure, three times the structure value is $900,000, so the $1 million floor would apply.
Proposed section 36.17 treats a purchase that breaks the rule as a single violation even when more than one large institutional investor is involved. A deal between two big landlords is therefore one penalty, not two. The notice is filed under docket TREAS-DO-2026-0529, in 31 CFR Part 36.
The comment window and what stays open
The notice was scheduled for Federal Register publication on October 23, so the 30-day comment period would close around November 22 if that date held. After comments, Treasury can revise the definitions and safe harbors in the draft, but the January 7 start is set by the Act.
Comments may be submitted through the federal eRulemaking portal, Regulations.gov, under docket TREAS-DO-2026-0529 and RIN 1505-AC96, or by mail to the Treasury Department’s Office of Capital Markets at 1500 Pennsylvania Avenue NW, Washington, DC 20220. The notice lists William Hicks of the Office of Domestic Finance at 202-622-0148 and Eric Froman of the Office of the General Counsel at 202-622-1942 for questions. Secretary Bessent said Treasury is working to avoid “unnecessary disruption” to the housing market.
Whether an investor falls under the rule depends on how homes are counted, which Treasury’s announcement does not spell out. For buyers, the draft leaves one fact unchanged: the ban reaches only entities at 350 homes or more, so a landlord with a few dozen rentals is outside it.
Would the bidder across the table still be an investor?
Treasury’s draft leaves the answer to the exceptions.
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This article was produced with AI assistance and edited for accuracy against the sources linked above.
