I grew up around home building. My sister and her husband, with a little help from the rest of the family, spent years putting new homes on the market around Sacramento. So when I read a housing bill, I ask one question first: will it get anyone to break ground?
The 21st Century ROAD to Housing Act makes that question harder to answer than its reception suggests. NMP’s own reporting put support at 89% of registered voters, including 87% of Republicans, 91% of independents, and 92% of Democrats. Almost nothing in American politics reaches that kind of agreement anymore. But a popular law and a new house are two different things, and only one of them gives your borrower something to finance.
The Cap Covers Less Than 1% Of Homes
The provision getting most of the attention blocks companies controlling 350 or more single-family homes from acquiring more. It does not take effect until January 7, 2027, though the law is often described as already in force.
So how much of the market does it actually cover? Parcl Labs mapped every entity it captures and found roughly 140 companies controlling about 530,000 homes, or 0.59% of the U.S. single-family housing stock. Fewer than one in 170 homes in this country falls under the bill's scope. On the transaction side, Realtor.com puts these investors at roughly 1% of single-family purchases nationally over the past decade.
A rule reshaping 1% of purchases can still be worth passing. Maybe.
Big Investors Were Already Selling
Scale is one problem, and time is another. The largest institutional owners, those holding 1,000 or more homes, have now been net sellers for nine consecutive quarters, selling 38% more homes than they bought in the first quarter of this year. Realtor.com says institutional buying peaked in 2021 and fell 65% by 2025 as borrowing got more expensive. The behavior the cap was written to stop had mostly stopped on its own.
The investor market also shifted underneath the bill. Small owners holding one to ten properties now account for roughly 96% of all investment properties in the country, and landlords with fewer than ten homes drove more than 60% of investor purchases in 2025, up from about half in 2021. The cap does not touch any of them. Many of them are your borrowers.
Removing A Buyer Does Not Reliably Create A Homeowner
Assume the cap works exactly as designed and an institutional buyer steps back from a house. The price does not drop because a bidder left the room. There is one less bidder, which helps your borrower. It does not add a house.
Parcl Labs tested this directly, tracking every U.S. home sale by buyer and seller type going back two decades. Investor-to-investor transactions climbed from roughly 27% of sales in 2019 to between 37% and 39% by late 2025, while investor-to-owner-occupant sales fell from about 32% to between 20% and 23%. When a large operator lists a home today, the most likely buyer is
another investor rather than a first-time homebuyer.
That matters for your pipeline. Weak purchase volume is an inventory problem, and inventory comes down to whether anyone is building. A wave of investor selling does not turn into loan applications on your desk.
The Real Problem Is What Never Got Built
If big investors were the reason homes are unaffordable, the markets with the fewest of them would be the cheapest. They are not. California metros sit near the bottom of the concentration rankings, all below 1%, with San Francisco at 0.2%.
Sacramento is worth looking at because it is improving. The city permitted 2,737 homes in 2025, nearly 15% more than the year before, and still landed at roughly 48% of the 5,698 units it needs annually to meet its regional housing target. A market moving in the right direction is producing less than half of what it requires in a state where institutional investors barely register.
Cost explains much of that gap, and most of it is locked in before a crew arrives. Terner Center research at UC Berkeley found impact fees on a new single-family home in California averaging $23,455 across the cities it studied, close to three times the national average. That is impact fees alone. Add school, fire district, and infrastructure charges and the total runs higher. In many places, reviews take years before the permit clock even starts. The builder passes all of it to the buyer.
The cap reaches none of that. While there are provisions in the bill to try and make permitting better, they amount to a myriad of low-impact incentives for 20,000 jurisdictions to legally interpret and act on with limited budgets. Nothing is going to move fast there. The cap also does nothing to change how builders get paid, which the government has its hands in through a state-by-state patchwork of varying lien waiver rules and forms.
Where New Inventory Actually Originates
New supply gets built locally, one project at a time, on short-term construction credit rather than through institutional acquisition. Across roughly 38,000 construction draws in our data this year, representing about $1.16 billion in small payments moving to builders, the structure of that lending holds steady: the loans run about twelve months, and 91% are secured by a single house.
Capital shaped that way cannot accumulate a portfolio. It builds or renovates one house, hands it to a local owner, and moves on.
What This Means For Originators
Three things follow.
Start by treating local permit issuance as a leading indicator. Permits pulled today become closings twelve to twenty-four months out. Where permitting in your metro runs below household formation, your purchase volume in that window is already constrained, which makes it worth tracking quarterly.
Second, be careful about building a 2027 forecast around January. Institutional buyers were already exiting, the cohort involved represents about 1% of purchases, and a meaningful share of what they sell goes to other investors. The inventory shift many people are expecting may not arrive.
Finally, follow where inventory is genuinely being created. In most markets the marginal new listing comes from new construction or a substantially renovated resale, both financed by private real estate investors on short-term credit. Originators positioned near that activity, whether through builder relationships, rehab lending or construction-to-permanent products, sit closer to the supply than those waiting for the existing-home market to loosen.
The Variable Worth Watching
None of this is an argument for institutional investors, and it is not a claim that the cap is harmful. My observation is narrower: the cap at 0.59% of housing stock and about 1% of purchases is not the variable governing whether homes exist to be financed.
Permitting speed, lien waiver complexity, the fixed cost of building, and the speed at which construction capital moves are that variable. They draw a fraction of the attention, and they will still be there in January.
A housing bill carrying 89% support is a genuine political achievement. Being clear-eyed about what it changes for the people writing loans, and what it leaves alone, is a separate exercise worth doing.
