Launch Version of Under All Is The Data
Most industry debates focus on visible outcomes: listings, portals, compensation, private networks, cooperation, and competition. This weekly series looks beneath the surface.
Through eight connected articles, Saul Klein and John Reilly examine the legal history, licensing structures, data rights, and marketplace rules that continue to shape how real estate information moves between brokers, MLSs, technology companies, and consumers.
Because beneath every industry debate lies a more fundamental question:
Who controls the data, under what authority, and for whose benefit?
UNDER ALL IS THE DATA | PART 1 OF 8
The Case the Industry Forgot
How a federal antitrust suit over websites became the constitution of listing data, and why most of the industry does not know it.
By Saul Klein and John Reilly August 2026
Ask a room of real estate professionals when the federal government last sued the National Association of REALTORS® over MLS rules and most will say 2019, or 2023, or they will name a commission case. Almost nobody names 2005. Yet the 2005 case is the one whose settlement still governs how every listing in America may be displayed on the Internet, and its story is worth telling in full, because the industry is about to experience that lesson again.
2003: The Opt Out
In 2003, NAR adopted its original Virtual Office Website Policy. A VOW, then as now, was a password protected brokerage website through which a broker delivered brokerage services to registered consumers, including the ability to search MLS data. The policy’s most consequential feature was the “opt out.” A listing broker could withhold their listings from display on a competitor’s VOW, either selectively, targeting a specific rival, or on a blanket basis, targeting the model itself.
Notice what made this remarkable. No comparable right existed for any other delivery method. A broker could not forbid a rival from handing their listing to a customer, mailing it, faxing it, or emailing it. Only the Internet based competitor could be restricted. The rule did not regulate a technology. It regulated a class of rivals.
2005: The Suit, and the Same Day Pivot
The Department of Justice investigated and prepared a complaint under Section 1 of the Sherman Act based on an agreement among competitors, operating through MLSs with market power, to restrain an innovative and more efficient class of rivals.
On September 8, 2005, the day the United States filed, NAR repealed the VOW Policy and replaced it with an Internet Listing Display Policy. The new policy preserved the blanket opt out and, for good measure, reinterpreted the definition of MLS membership in a way that would exclude brokers whose model was providing property information to buyers online and referring them to other brokers for a fee. The government amended its complaint and pressed on. NAR moved to dismiss, arguing that because no broker was compelled to opt out, the opt out could not restrain trade. The court disagreed: the question under Section 1 is not whether individual actors are restrained but whether competition is.
What the Government Found
The government’s Competitive Impact Statement, filed in June 2008, documented that opt outs were a practical reality, not a theoretical risk. More than fifty instances in fourteen markets. Large markets like Detroit and Cleveland. A market with one dominant broker, Des Moines. Small markets like York, Pennsylvania, and Emporia and Hays, Kansas, where virtually every broker opted out, in Emporia’s case with the forms filled in by nearly all brokers in the same room at the same time. That is not innovation policy. That is a group boycott with a signature line.
And the government made a point that matters even more than the count: even where no broker exercised the opt out, its mere existence disabled the VOW broker from promising customers complete MLS access, and hung the threat of retaliation over every pro consumer initiative the VOW broker might contemplate.
2008: The Judgment
Six weeks before trial, in May 2008, the parties settled. Judge Matthew Kennelly entered the Final Judgment on November 18, 2008. Its terms were surgical. NAR repealed both challenged policies and adopted the Modified VOW Policy, attached to the judgment as Exhibit A. Every Board owned MLS in America, every “Covered Entity” in the decree’s language, was required to adopt implementing rules within ninety days. The enforcement mechanism was elegant and severe: NAR was required to deny professional liability insurance coverage to any board or MLS that refused. The judgment also carried Exhibit B, the definition of MLS Participant with an interpretive Note that protected part time brokers, low volume brokers, and, pointedly, referral model VOW operators from exclusion.
The decree’s core principle fits in one sentence: a broker may not decide what a rival broker’s customers are allowed to see. Display decisions belong to the seller. Data flows to every cooperating broker on cost based, equal terms.
2018: The Decree Died. The Rule Didn’t.
Here is the part most practitioners miss. The Final Judgment expired by its own terms ten years after entry, on November 18, 2018. No court order compels any of this today. But NAR had carried the Modified VOW Policy into the mandatory sections of its Handbook on Multiple Listing Policy, where it lives now as required policy for every Association owned MLS, inherited by local rules through the standard provision that NAR mandated changes are automatically incorporated. The enforcement lever is the one the decree invented: conformity as a condition of the NAR ecosystem, professional insurance coverage included.
So when someone tells you the VOW rules are just MLS bureaucracy, correct them gently. The rules are what remains of a federal antitrust settlement, the load bearing wall the government made the industry install. The court left the building. The wall stayed.
The industry forgot this case at exactly the moment it started to be plausable. In the coming parts of this series, we will define IDX and VOW as the two licenses they are, examine the seller’s menu of display choices, and then turn to the arguments the industry is having right now, about private networks and paper brokers, that this case quietly settled once already.
Next in the series: The Desk and the Window, on what a VOW actually is and why it is not a marketing site.
