UNDER ALL IS THE DATA | SPECIAL EDITION
The First Draft of the Next Decade
CRMLS proposes to abolish IDX and VOW, license everything, and slam the door on AI. Some of it is the future. Some of it is 2005 calling.
By Saul Klein and John Reilly August 2026
Our recent series argued that the future of MLS governance belongs to the license: define uses precisely, price commercial consumption commercially, reserve the participation subsidy for participation, and stop trying to police identity when the law only lets you police use. We also predicted that both ends of the cooperative’s broken symmetry, the firms that will not put inventory in and the entities that only take inventory out, would force the issue within the decade.
We did not expect the largest MLS in the country to circulate the first draft of that decade quite so quickly. CRMLS’s proposed Rule 19, titled Participant Data Access and Use and dated July 2026, is the most ambitious rewrite of MLS data rules any major MLS has attempted since the consent decree era. It deserves to be read closely, because parts of it are the blueprint this industry needs, and parts of it are the industry reaching, one more time, for the instrument the government took away in 2008.
What the Title Tells You
Start with the name. Participant Data Access and Use. Not “IDX rules,” not “display policy.” The organizing idea is that everything a participant does with MLS data outside the MLS’s own front end software is a licensed use requiring express authorization, and everything not authorized is prohibited and confidential. The proposal then reserves to CRMLS an unrestricted right to license the data commercially to anyone it chooses, participant or not. That is the license architecture, stated as plainly as it has ever been stated in a rule: access is not a status you hold. It is a use you are granted.
Readers of this series will recognize the two track structure immediately. Participant access for brokerage uses inside the rules; commercial licenses at negotiated terms for everything else. On architecture, CRMLS has drawn the map we argued for.
The Parts That Are the Future
The AI rule. Rule 19.3.2(d) is the first comprehensive MLS rule answer to machine consumption of listing data. Participants may not feed listing records, or any derivative or compilation, to any AI platform, model, or training environment, with one narrow carve out: a specific transaction for a specific client, on a platform whose terms verifiably prohibit training use, with nothing retained and nothing bulk. The companion display rule requires ADX sites to deploy technical blocking, robots exclusion, AI opt out tags, rate limiting, bot detection, while expressly preserving ordinary search indexing. Whatever happens to the rest of this draft, expect this provision to be copied by every MLS in the country within two years. Our series ended by warning that AI would pose the paper broker question in a form the 2008 framework never imagined: an entity that is all consumption and no contribution, arriving through whatever door is cheapest. CRMLS’s answer is to close every door except a paid license from CRMLS. That is the license doing exactly the work we said only the license can do.
The anti monetization rules. Advertising brokers may not charge listing brokers for placement or sorting, may not filter displays by who pays, and may not monetize access to cooperating brokers’ records. Notice the craftsmanship: the rule never asks who the advertising broker is or how it earns its revenue. It prohibits a use. That is the lawful form of the paper broker response, the one that survives the Exhibit B Note, and it is aimed with precision at the pay to play display economy.
Seller elections, extended. The seller’s menu survives and grows: a full internet withholding election, and a new Limited Exposure status for Coming Soon that lets the listing broker market on its own channels while staying out of the cooperative display feed, each documented on a signed seller instruction. The pen stays in the seller’s hand, which is where the decree put it.
The Parts That Are 2005 Calling
The referral exclusion. Rule 19.1(c) provides that solely engaging in referral activities is not sufficient to qualify for data access. Read that sentence next to the Exhibit B Note, which remains mandatory NAR policy and which forbids denying participation to a VOW operator, expressly including a VOW used to refer customers to other participants. The draft’s move is to leave participation itself untouched and condition only the data feed. But the decree era framework exists because feeds are participation in any sense that matters; a participant entitled to join but not to receive the payload has been excluded by plumbing. The drafters clearly saw the problem. They quote the Note’s protective language nearly verbatim, no transaction minimums, no level of service test, part time protected, and then re head it around “direct representation with fiduciary duties.” The result is a rule that recites, in one paragraph, that access cannot be denied based on level of service, and conditions access, in the same section, on a level of service. That seam is where any challenge will start.
The abolition of VOW. The draft says it without blinking: there is no separate Virtual Office Website program. IDX and VOW merge into a single Advertising Data Exchange (ADX), and cooperative display becomes, by definition, advertising. Something real is lost in that merger. The VOW was the desk: the compulsory, deeper data grant that let a broker serve a registered client online as fully as across a desk, on the broker’s own platform. ADX is the window. The draft’s apparent substitute is elegant and telling: brokers may invite clients into the CRMLS front end itself, where full depth service happens inside the MLS’s own software. The desk still exists. It has been moved into the MLS’s building. Whether that satisfies a mandatory Handbook policy that requires a VOW feed on the broker’s platform is the largest conformity bet in the draft, and it is also a quiet redefinition of who owns the client experience in this industry. Brokerages should read 19.3.1(b) twice.
The muzzle on the advertising broker. ADX displays may not highlight, create new descriptions, or use different language for a property’s features, out of respect for the listing broker’s exclusive marketing role. The decree era policies took care to preserve the displaying broker’s right to communicate professional judgment about a listing. A cooperative in which only the listing broker may speak about a property is more orderly and less competitive, and the industry has been told before, in a federal complaint, which of those qualities the law weighs more heavily.
How to Read It Whole
The fair summary is this. CRMLS has written the first rule that takes the license architecture seriously, and then, having built the right instrument, could not resist pointing it at identity as well as use. The AI rule, the anti monetization rules, the two track licensing structure, and the preserved seller elections are the future, and we expect them to spread. The referral exclusion, the VOW abolition, and the display muzzle are the industry’s oldest reflex in new drafting: deciding that a disfavored way of doing brokerage is not brokerage, and enforcing the decision through the plumbing. The 2008 settlement was about exactly that reflex. Its policies are still mandatory. And the regulators who wrote it have been paying closer attention to this industry in the past three years than in the previous fifteen.
The proposal is a draft, and drafts move. Watch three things. Whether NAR signals a conformity position on VOW abolition and the referral exclusion. Whether the AI provisions get copied faster than the controversial ones, which would tell you the market can tell the difference. And whether any challenge lands on the level of service seam in 19.1, because that is the sentence pair on which the whole heightened access standard balances.
Under all of it, as always, is the data. CRMLS has just told the industry, more candidly than any MLS before it, that the data is a licensed asset and the MLS is its licensor. The industry should take the candor seriously, adopt the parts that govern use, and think very hard, one more time, before it governs people.
The views expressed here are the authors’ own and do not represent the positions of any organization either of them serves. This analysis is based on the circulated July 2026 draft of CRMLS Rule 19, which is a proposal and may change. This article is commentary, not legal advice.
