MLS Data Control Policy: A Time For Clarification
“The next real estate disruption isn’t technology — it’s regulation of who controls the data.”
John Reilly
April 13, 2026
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“The next real estate disruption isn’t technology — it’s regulation of who controls the data.”
The risk here isn’t just lost revenue, it’s the loss of relevance. When unauthorized “grey market” entities provide easier access to your data than you do, they become the primary source of truth in the eyes of the industry. To protect the exclusivity and value of an MLS membership, boards must transition from passive data providers to active Data Custodians
As the CEO of the San Diego MLS, Saul was quick to respond with the fact that MLSs should be looking for alternative ways to showcase the value of the MLS. He explores the concept of flipping the current subscription-based business model and finding opportunities to monetize the data and bring benefits back to the providers of the data.
In practice, it’s hard to reason about the “purpose” of a product as broad as ChatGPT, or the “purpose” of the entire internet. A better framing is: do the market harms from ChatGPT come from it producing substitutes that compete with the originals? Or is it an indirect effect, like a book critic review could have on a book?
A vendor seeking a site license must have a program that takes the MLS or association through these steps and be ready to fund the necessary efforts to ensure high usage and value for the fee paid.
The findings from San Francisco show that on-MLS listings consistently outperform off-MLS transactions in both sale price and transparency metrics.
The Compass acquisition of Anywhere could be a “Big Deal” for Associations, MLSs, and other brokerage models.
The mid-1990s marked a monumental turning point with the conceptualization of putting real estate listings on the “worldwide web.” Saul Klein, acting as a consultant for the National Association of Realtors (NAR), was a central figure in this ambitious endeavor.
But in real estate, in parenting, in everyday life, we’re already negotiating with a new kind of construct. AI isn’t a fantasy. It’s a framework we’ve invited in. The question isn’t whether it will change everything. It’s whether we’ll realize when we’re no longer in control.
By focusing on these three pillars of data quality, MLS data can be transformed from a simple repository of property listings into a strategic asset that drives better decision-making and enhances outcomes for all parties involved.
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But we made some mistakes along the way… The History of MLS…and if you could build it again, what would you do differently? Join us
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