The recently announced partnership between Compass and Redfin is stirring up some discussion about the role of private — or preview — listings and how those listings should be treated by the MLS system.
At its core, the debate over private real estate listings is a debate about price discovery — how markets learn what something is worth. In housing, that process is especially delicate. Unlike stocks or commodities, each home is unique, and the “right” price is not known in advance. It must be discovered through interaction between buyers and sellers over time.
With that in mind, it is worth stepping back from the rhetoric — often framed around “fairness” and “transparency” — and asking a simpler question: How do different listing strategies affect price discovery?
This is a question I have studied directly. In the On MLS Study: Measuring the Benefits of an Open Marketplace, my co-authors and I found that homes listed and sold on the MLS achieved materially higher prices — about 13 percent after controlling for property and neighborhood characteristics — reflecting the benefits of broad exposure and competition.
Those findings remain important. They show that, all else equal, open-market participation strengthens outcomes for sellers.
But “all else equal” is doing some heavy lifting in that sentence.
The growing interest in private or staged listings is not a rejection of those findings. It reflects a recognition that how and when a property enters the marketplace can shape the quality of price discovery itself.
A question of choice, not ideology
Private listings are often described as exclusionary or anti-consumer. That framing is too simplistic.
In practice, most properties that begin as private listings ultimately reach the MLS. The issue is not whether listings are shared, but when and under what conditions. Seen this way, private listings are less a departure from the MLS than a way of preparing for it.
Incumbent incentives and platform economics
To understand the resistance, it helps to consider the role of modern real estate platforms.
Online portals such as Zillow, Realtor.com, Redfin, Trulia and Homes.com are fundamentally aggregators of MLS data. Their value depends on assembling comprehensive, real-time inventories and connecting buyers with agents.
Economically, these are two-sided platforms: Success depends on attracting both users and professionals. In such markets, completeness and immediacy of information are not just features — they are core inputs.
Policies that require immediate MLS exposure help ensure a steady flow of standardized data. By contrast, flexibility in listing timing introduces variation, which can complicate aggregation.
From this perspective, the emphasis on “transparency” reflects not only consumer principles, but also underlying economic incentives.
Regulation and experimentation
Recent policy changes reflect this tension. The National Association of Realtors has relaxed its Clear Cooperation Policy to allow “office exclusive” and delayed marketing strategies.
At the same time, some platforms discourage such flexibility by tying visibility to immediate MLS participation.
This creates a familiar tradeoff:
- Standardization promotes access and consistency — benefits well documented in prior research
- But experimentation allows sellers to better position properties before entering the broader market
Both have value. The challenge is balance.
Price discovery and information timing
To see why this matters, return to price discovery.
A listing price is not a fact — it is a hypothesis, informed by comparables and judgment. True market value emerges only as buyers respond.
The MLS is highly effective at amplifying competition once a property is exposed. But how does a seller arrive at the right starting point?
When information is released all at once — especially at an uncertain price — it can limit expectations and constrain adjustments. But a more incremental approach allows sellers to learn from early signals before committing to a widely visible price.
This reflects a basic economic principle: When information is incomplete, the sequence of its release can affect outcomes (e.g., Joseph Stiglitz; Paul Milgrom).
A simple market example
Assume you are a homeowner expecting to sell for about $900,000.
Instead of immediately listing on the MLS, your agent first shares your property with a smaller network of qualified buyers. Over several days, feedback emerges: multiple buyers indicate willingness to pay more.
This reveals new information about demand — information not captured in past comparables. So your agent updates expectations and successfully sells it via the MLS at $1 million.
Once broadly exposed — the stage where competition is most powerful — the property attracts multiple offers and sells at a premium … to your benefit.
The point is not that this outcome is guaranteed, but that the process improved the initial estimate of value. An immediate listing at $900,000 might have anchored expectations and limited the result … and to your detriment.
Staging, in this sense, enhances price discovery before the MLS amplifies it.
The seller’s stake
It is easy to lose sight of the seller.
For most households, a home is their largest asset. It is reasonable to seek strategies that manage risk, preserve privacy and improve pricing accuracy. Flexibility in how a property is introduced does not undermine competition — it can help prepare for it.
Complement, not replacement
Private listings are not displacing the MLS. They are typically a preliminary step within a broader strategy.
The MLS remains the central mechanism for exposure and competition. What is evolving is the ability to introduce listings in a more staged, information-driven way.
This is not disruption. It is refinement.
The debate over private listings is often framed as transparency versus consumer protection. Those concerns matter — but they are not the whole story.
At a deeper level, the issue is how information enters the market, how prices are discovered and how institutions shape that process.
This perspective does not contradict my prior research — it is informed by it. The evidence remains clear: Broad MLS exposure strengthens competition and improves outcomes.
What this discussion adds is a recognition that the path to that exposure also matters.
If the MLS is the engine of competition, then staging is part of the tuning.
Private listings, properly understood, do not replace the MLS — they help it work better by improving the conditions under which price discovery begins.
After all, in markets as in classrooms, the goal is not to control every answer in advance — it is to create the conditions under which better answers can emerge.
Kevin C. Gillen, PhD, is Principal Research Fellow with Wilbur C. Henderson Real Estate Institute and Adjunct Professor of Finance at Drexel University. This is Kevin Gillen’s opinion and not necessarily those of Drexel University or the Henderson Real Estate Institute.
