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The 350-Home Cap: Washington Redraws the SFR Buyer Map

Congress just passed the largest housing bill in decades — and its flashiest provision freezes the biggest institutional buyers out of the existing-home market

Snapshot as of July 6, 2026 · data current as of publication · full sources at the bottom of this page

The 21st Century ROAD to Housing Act cleared both chambers by veto-proof margins in late June and bars entities controlling 350 or more single-family homes from buying additional existing homes. The market repriced the policy months ago: large-investor daily purchases have fallen from roughly 250 to 100 homes per day since a federal ban was first floated in January. The cap lands hardest where mega-landlords concentrate — they own up to 25% of Atlanta's SFR stock — while barely touching the Midwest, where institutional share is thin and single-family rents are growing fastest in the country.

How the bill becomes law · a veto-proof standoff with a July 7 clock

Jun 22 · Senate passes · overwhelming bipartisan margin
Jun 23 · House passes · 358–32
Both margins exceed the two-thirds needed to override a veto
Jun 24 · signing ceremony canceled
President conditions signature on a separate elections bill (SAVE America Act)
Jun 25 · bill sent to the White House
Starts the constitutional 10-day clock (Sundays excepted)
Jul 7 · clock expires
If Congress remains in session and the president takes no action, the bill becomes law without a signature
Once enacted, the purchase restriction takes effect 180 days after enactment and applies only to purchases from that date forward — no forced divestiture of existing portfolios.

What the cap actually does

350Home threshold, aggregated across affiliates
180dUntil restriction takes effect post-enactment
0Forced divestitures — existing portfolios grandfathered
Buying existing homes at 350+ ownedProhibited new
Building / buying new homes for rentExempt carve-out
7-year resale rule on exempt purchasesRemoved in final bill
Affiliate / fund attribution rulesBroad watch
"Direct or indirect investment control" is aggregated across affiliated entities — structuring around the threshold with multiple SPVs is expressly targeted.

Where institutional ownership concentrates · share of SFR stock

Atlanta
25%
Jacksonville
21%
Charlotte
18%
Tampa
15%
Seattle
4%
U.S. national
~3%
Large institutions own roughly 3–5% of single-family rentals nationally (GAO), but 15–25% in a handful of Sunbelt metros. The cap is a Sunbelt story; Midwest institutional share is thin.

Buyers repriced the policy months before it passed

Large-investor purchases, early Jan 2026~250 / day
Large-investor purchases, by March 2026~100 / day −60%
Overall investor share of purchasesRoughly unchanged
Who absorbed the gapSmall investors
Small investors (<10 homes), 2025 net activityBought 20% more than sold net buyers
U.S. housing supply gap (Realtor.com)4M+ units
Average 30-yr mortgage rate~6.5%
Income needed for typical home (Redfin)~$117K
The largest buyers stepped back and smaller operators stepped in almost one-for-one — evidence the acquisition opportunity migrates down the size curve rather than disappearing. Renovation-driven operators remain the marginal supply of rent-ready homes.

Single-family rent growth · YoY, April 2026 (Cotality SFRI) · Midwest leads, Sunbelt stalls

Chicago
+5.5%
Philadelphia
+3.0%
New York
+2.6%
Detroit
+1.8%
U.S. average
+1.4%
Dallas
+0.6%
Houston
+0.1%
Miami
−0.4%
National single-family rent growth decelerated to +1.4% YoY from +2.8% a year earlier — but the average hides the split. Midwest and Northeast metros lead while the supply-heavy Sunbelt sits flat to negative. Higher-end properties grew +2.1% vs +0.6% for the low-end tier.

Read-through for AllStreet

  • The cap targets a different weight class. The restriction binds at 350+ homes under common control. Mid-scale, vertically integrated operators keep full access to the existing-home acquisition lane the mega-landlords are exiting.
  • Less competition at the margin. Large-investor purchases are already down ~60% per day. Fewer institutional cash bids in the acquisition pool is a tailwind for disciplined fix-to-rent buyers.
  • Market selection confirmed. The policy risk and the oversupply both sit in the Sunbelt. Midwest metros carry thin institutional share and the strongest rent growth in the country — Chicago at +5.5% vs Miami negative.
  • Structuring diligence matters. Aggregation rules reach across affiliated entities. Fund and SPV architecture should be reviewed against the attribution language well before the 180-day effective date.

What we're watching

  • July 7: whether the bill becomes law without signature, is vetoed, or the standoff extends — and whether Congress stays in session to block a pocket veto.
  • Rulemaking on the attribution and control definitions — how funds, JVs, and managed accounts are aggregated toward 350.
  • Whether frozen mega-landlord capital rotates into build-to-rent (the exempt lane) or into other asset classes entirely.
  • State-level copycat bills that set lower thresholds than 350.
  • Supply provisions kicking in: streamlined environmental review, pattern-book grants, and the manufactured-home chassis repeal (est. $5–10K per-unit savings).

The dials that decide the story

350
Home cap on institutional buyers
Jul 7
10-day clock expires
−60%
Large-investor daily purchases since Jan
+5.5%
Chicago SFR rent growth vs +1.4% U.S.
A law that freezes the largest buyers out of existing homes, an acquisition pool already migrating to smaller operators, and Midwest rent leadership — the setup favors mid-scale operators with local execution. A veto that sticks, or aggressive attribution rulemaking, would be the signals to revisit.
Sources & data — click to verify
NPR GAO Greenberg Traurig Baker Botts CNBC / Parcl Labs Cotality (CoreLogic) The Hill Urban Institute Realtor.com Redfin

Links: NPR — Congress passes the largest housing affordability bill in decades (House 358–32; ~3% national institutional share; supply provisions; ~6.5% mortgage; $117K income; 4M+ unit gap) · Greenberg Traurig — House passes ROAD to Housing Act with changes to institutional investor restrictions (350 threshold, attribution, BTR carve-out, 7-year resale removal) · Baker Botts — Congress passes final bill (180-day effective date, no forced divestiture) · The Hill — Can Trump use a pocket veto? (June 25 transmittal, July 7 deadline) · NPR — Trump cancels signing, conditions on SAVE America Act · CNBC — Big investors fleeing the for-sale housing market (~250 → ~100 purchases/day; small-investor absorption; <10-home investors bought 20% more than they sold in 2025) · GAO-26-108675 — Institutional investor ownership of single-family rental homes (3–5% national; Atlanta ~25%, Jacksonville ~21%, Charlotte ~18%, Tampa ~15%, Seattle ~4%) · Cotality Single-Family Rent Index, April 2026 (+1.4% U.S.; Chicago +5.5%, Philadelphia +3.0%, New York +2.6%, Detroit +1.8%; Miami −0.4%; high-end +2.1% vs low-end +0.6%) · Urban Institute — institutional investors ~3% of the single-family rental market
Snapshot dashboard — figures are point-in-time as labeled and drawn from third-party estimates that vary by source and methodology. Legislative status as of July 6, 2026 and subject to change. Not investment advice and not legal advice. Verify against primary data before acting.