What is the New York algorithmic rent pricing ban injunction? The algorithmic rent pricing ban injunction is a September 29, 2026 order from US District Judge Valerie Caproni of the Southern District of New York that blocks the state from enforcing General Business Law Section 340-b, the first statewide ban on algorithmic rent setting, while RealPage's First Amendment challenge proceeds. It is the first time a federal court has stopped a state from enforcing a ban on rent pricing software, and the reprieve is narrower than the headlines suggest. For the framework this decision touches, see our complete guide to AI multifamily underwriting.
Key Takeaways
- Judge Valerie Caproni granted RealPage a preliminary injunction on September 29, 2026, and separately denied New York Attorney General Letitia James's motion to dismiss the lawsuit.
- The court called it a "close call" but found RealPage "marginally" likely to succeed, because the statute targets pricing software without regard to whether it uses public or non-public data.
- New York's ban was signed October 16, 2025 as S7882 and A1417-B, took effect December 15, 2025, and amended the Donnelly Act, the state's antitrust law.
- A preliminary injunction is not a final judgment. The Department of Justice consent terms, ten state antitrust claims, and roughly $360 million in landlord settlements are all untouched by it.
- The compliance line that survives is data provenance, not software: your own data and public data are defensible, pooled non-public competitor data is not.
What the Court Actually Ruled
Judge Caproni enjoined New York from enforcing its algorithmic rent setting ban while RealPage's case proceeds, and denied the Attorney General's bid to dismiss the suit. In a 27 page decision she wrote that "although it is a close call, the Court determines that, at this stage, RealPage is, marginally, likely to succeed on the merits." That is a preliminary finding, not a verdict.
The reasoning matters more than the result. Section 3 of the statute bars residential owners and managers from setting rents, renewal terms, or occupancy levels based on recommendations from software performing a "coordinating function." Caproni found that provision likely facially invalid because it is undiscerning: it captures the software whether the inputs are public or confidential. "Under the rubric of preventing price fixing, the statute prohibits normal commercial conduct just because it is facilitated by software," she wrote. "Whether one is considering a residential landlord or a manufacturer of widgets, there is nothing untoward about considering prices charged by competitors when deciding how to price one's own product."
New York argued the law regulates conduct rather than protected speech, and that the state may police anticompetitive behavior by technology companies that, in the Attorney General's words, "wreaked havoc" on the rental market. RealPage, owned by private equity firm Thoma Bravo, filed the suit in November 2025, two days after settling with the Department of Justice.
Why the Public Versus Non-Public Data Line Now Decides Everything
The court drew the same line the DOJ settlement drew. RealPage's consent terms require it to stop using competitors' non-public data to generate rent recommendations. New York's statute went further and swept in any tool that pools data from two or more unaffiliated owners, public or not. That gap is precisely where the injunction landed.
Under the statute, a product performs a "coordinating function" only if it does all three of the following: collects rents, supply levels, or lease termination and renewal dates from two or more unaffiliated owners; processes that data computationally, including by using it to train an algorithm; and then recommends rents, renewals, occupancy targets, or other lease terms. The one carve out covers tools that set rent or income limits under rent stabilization, rent control, or a government administered affordable housing program.
Read that definition against your own vendor stack. A module that scores only your portfolio's traffic, exposure, and lease expirations does not pool competitor data at all. A module that blends in aggregated market comps drawn from other owners' submitted rent rolls does. That distinction, not the brand name on the dashboard, determines exposure across Yardi, Entrata, AppFolio, and RealPage deployments alike. For the settlement backdrop, see our analysis of algorithmic rent pricing after the RealPage settlement.
What the Injunction Changes for New York Multifamily Operators
Less than most operators assume. Enforcement against RealPage and its customers had already been paused: according to law firm analyses of the litigation, the Attorney General's office agreed to hold off while the injunction motion was pending. The order converts that informal standstill into a court ordered one and adds a judicial signal about the merits.
Three things do change in a way worth acting on:
- Vendor negotiations reopen. Contract language written in late 2025 to sunset New York functionality can be revisited. Ask for data provenance representations, not a generic compliance clause.
- Underwriting gets a range. A deal priced with zero revenue management contribution now deserves a scenario band rather than a single haircut.
- Documentation becomes the asset. Because the surviving risk turns on inputs, the operator who can prove what data trained a recommendation is the one who survives discovery.
CRE investors looking for hands on AI implementation support can reach out to Avi Hacker, J.D. at The AI Consulting Network for this kind of vendor and compliance review.
What the Injunction Does Not Change
A preliminary injunction is the least durable form of relief in federal litigation. New York can appeal, the case can reach final judgment on a fuller record, and Caproni herself flagged how close the call was.
The broader exposure is intact. The Department of Justice consent judgment still binds RealPage's data practices. Ten state attorneys general are pressing Sherman Act claims in the Middle District of North Carolina, and in September 2026 they told that court the federal settlement does not moot their case. Landlord settlements with tenants total roughly $360 million to date, and the District of Columbia added $9.3 million with two more landlords this month. A ruling about one New York statute changes none of it.
One contrast is worth noting. New York's separate Algorithmic Pricing Disclosure Act, General Business Law Section 349-a, took effect November 10, 2025 and reportedly survived its own First Amendment challenge. Disclosure mandates are faring better in court than outright bans. For the full state and city map, see our guide to AI rent pricing laws across states and cities, and for a parallel constitutional fight, our coverage of xAI's challenge to Colorado's AI law.
How to Underwrite Revenue Management Upside After the Ruling
Do not restore full revenue management upside to a New York pro forma on a preliminary injunction. Model it as a range and size the downside.
Here is the arithmetic. Suppose revenue management contributes 75 basis points of extra annual rent growth on a 250 unit New York asset, worth about $150,000 of incremental net operating income. NOI is gross revenue minus operating expenses, so it flows straight to value: at a 5.5% cap rate, where cap rate is NOI divided by purchase price, $150,000 of NOI is roughly $2.7 million. If annual debt service is $1.6 million, losing that $150,000 moves DSCR, which is NOI divided by annual debt service, from about 1.30x to 1.21x. If your covenant sits at 1.20x, the pricing tool is not a margin enhancer, it is a covenant dependency.
Two steps for the next 30 days:
- Inventory your inputs. For every pricing tool, get written confirmation of whether recommendations draw on non-public data from unaffiliated owners.
- Keep the human in the loop. The National Multifamily Housing Council has long argued that housing providers, not algorithms, set rents. Documented human review of every recommendation is the cheapest defense available.
Claude and ChatGPT can both parse a vendor master services agreement against the Section 340-b "coordinating function" definition and flag the clauses that describe data pooling. If you want that workflow built properly rather than improvised, The AI Consulting Network specializes in exactly this.
See Governor Hochul's announcement of the S7882 signing, citing an estimated $3.8 billion in inflated rents nationwide, and the National Multifamily Housing Council's litigation resource on revenue management.
Frequently Asked Questions
Q: Can New York landlords use RealPage again after this ruling?
A: Enforcement of the state ban is blocked while the case proceeds, so the statute is not currently an operative bar. But the Department of Justice consent terms and ten pending state antitrust claims still apply, and a preliminary injunction can be reversed on appeal or at final judgment. Treat this as a pause, not permission.
Q: What exactly did the judge find unconstitutional?
A: Nothing yet, formally. Judge Caproni found RealPage "marginally" likely to show that Section 3 of the statute is facially invalid under the First Amendment, because it prohibits software driven pricing recommendations without distinguishing between public and non-public data inputs. That is a likelihood finding at the preliminary stage.
Q: Does the ban apply to commercial and industrial leases?
A: No. Section 340-b reaches only "residential rental dwelling units" in New York and the owners, managers, and vendors that touch them. Office, industrial, and retail pricing tools sit outside it, though the antitrust principles on sharing non-public competitor data apply to every asset class.
Q: How should this change my 2026 acquisition underwriting in New York?
A: Model revenue management contribution as a range rather than a fixed line item, and stress test DSCR covenant headroom without it. The legal outcome is unresolved, so a deal that only clears its covenants with algorithmic pricing upside is carrying regulatory risk in its capital stack.