Compass Private Listings Under State Scrutiny — California Can Legislate Showing Access and Attorneys General Can Investigate Compass Now

How the Compass MLS Ultimatum Moved the Antitrust Question From Listing Visibility to Showing and Offer Access in California, Washington and New York

Compass · CRMLS · NWMLS · MRED · Zillow · C.A.R. · NAR · California Department of Real Estate · New York Attorney General · California · Washington · New York · Illinois · Wisconsin · Connecticut

A California statute can write showing access into law, and existing state law lets an attorney general examine Compass's showing and offer practices before any statute passes.

• MCAI Economics Vision: California Private Listing Law After Washington SSB 6091 — Broker Conduct Rules for Listing Visibility, Showing Access and Buyer Representation

• MCAI Economics Vision: Compass Private Listings Are Now Public and Access Is the Antitrust Question — A Briefing for MLS Leaders and REALTOR Associations

On August 31, 2026 Compass ended its Washington antitrust suit with an agreement under which every listing still enters the Multiple Listing Service (MLS). Eight days later Compass wrote to the nation's largest MLS and demanded that it stop fining agents who publicly market listings kept out of the MLS. On September 30 chief executive Robert Reffkin gave every MLS in the country until October 6 to permit public marketing of listings kept out of the MLS, or face suit.

The California Regional Multiple Listing Service (CRMLS) refused the same day. CRMLS alleges that buyers had to drop their own agents to tour Compass listings held outside the MLS. Compass says homeowners should be able to market any listing publicly without their agent facing fines.

Central finding. Compass now advertises its exclusive listings publicly, so the legal question has moved from who can see a home to who can show it and bid on it. California can write the answer into a broker conduct statute, and any state attorney general can examine Compass's practices now with a document request.

A Home Can Be Advertised to Everyone and Shown Through One Brokerage

Visibility law leaves access open, and two routes close it: a statute and an inquiry.

Washington's listing statute regulates visibility and stops there. Substitute Senate Bill (SSB) 6091 requires a broker who markets a home to a limited group to market it to the public and to every broker at the same time. Washington's licensing regulator states that public marketing does not require an owner to allow access to the home.

Compass's own website shows why the gap matters. The site carries listings from all its brands at every marketing stage. Real Estate News reports that buyers can skip a Compass agent only for listings in the coming-soon phase. A home can therefore be advertised to everyone and shown through one brokerage's agents.

California's proposed statute closes the gap without requiring MLS submission. The statute regulates what a licensee does and leaves Civil Code section 1088 untouched, so a seller can still choose privacy. The statute protects three things: public information, showing and offer access and representation independence.

State attorneys general do not need a new statute to question Compass. Existing antitrust, consumer-protection and licensing laws give each office authority to demand documents. Whether those laws also support a claim depends on the answers.

Six measurable questions frame the inquiry. Three concern Compass's listing share, its routing of listings and the information the public sees. Three concern showing and offer access, buyer representation and sale outcomes.

MLS leaders and state REALTOR associations hold the first evidence, including buyer accounts and counts of listings advertised outside the MLS. An enforcer discounts a complaint from a competitor's trade group. The request that survives the discount is narrow: disclose the commercial interest, ask for a preservation demand and ask that the six questions go to Compass.

Courts are unlikely to answer first. The one pending federal case on Compass's listing practices was paused on September 15, when the court sent related claims to private arbitration. MindCast's simulations place a Compass suit against an MLS by year-end at 77–90% and a court order changing CRMLS's rule by the end of 2027 at 14%.

Both routes rest on one principle. A seller can choose privacy, and a broker cannot advertise a home and then deny other brokers' buyers the same chance to compete.

The Full Papers Hold the Statute Text, the Six Questions and Fifteen Simulation Predictions

The California paper sets out the proposed statute in four public-information provisions, two representation rules and six limits. The same paper carries eight Simulation Predictions, four year-end 2027 outcomes with probabilities and thirteen risk entries on a seven-date deadline calendar. The attorney general paper maps four bodies of state law, the documents that answer each of the six questions and five objections an enforcer will raise. Seven Simulation Predictions, four exposure entries with dated actions and 20 annotated MindCast works complete it.

Lawmakers and brokers get the statute text and the deadline calendar in the California paper. MLS leaders, REALTOR associations and enforcement staff get the six questions and the evidence file in the attorney general paper.

MindCast Simulation Predictions Put a Suit Ahead of Any Uniform Rule

Fifteen Simulation Predictions cover the courts, the California Legislature and state enforcers. Seven lead.

In the Legislature and the Courts

• P-1 · 47–63%. A California legislator introduces a concurrent-marketing bill by the 2027 bill-introduction deadline.

• P-2 · 77–90%. Compass files an antitrust complaint against at least one MLS between October 6 and December 31, 2026.

• P-3 · 58–76%, given P-1. The first California bill contains no brokerage-neutral access rule.

• S-4 · 82–92%. CRMLS keeps its submission rule through June 30, 2027.

In State Enforcement

• P-1 · 34–50%. A state attorney general other than New York's takes a public step on Compass's listing practices by June 30, 2027.

• P-2 · 48–64%. A pleading against Compass alleges denied showings, denied offers or a forced change of representation by June 30, 2027.

• P-3 · 84–93%. No Republican-led attorney general takes a public step through June 30, 2027.

California most likely ends 2027 with rules that still vary by MLS, at 52%. Access evidence lowers the cost for a second state to act without making early action likely.

Every Simulation Prediction carries a window, a trigger, a falsifier and a named verification source. The California paper holds eight entries, numbered P-1 through S-5. The attorney general paper holds seven, numbered P-1 through S-4.

Seven Audiences Face a Decision Before a Court Decides Anything

Each decision carries an exposure with a date attached. No action removes an exposure entirely.

🗂️ MLS Leaders. The board decides how to answer a Compass demand. A board answering alone compares a federal defense with a rule change, and pooled defense changes that comparison.

• Exposure: an unbudgeted antitrust defense begins in the fourth quarter of 2026.

• Mitigation: a board vote on the merits entered in the minutes, and a litigation reserve in the 2027 budget.

• Residual: Compass can sue any MLS that keeps its rule, and defense costs can exceed the reserve.

⚖️ MLS and Brokerage Counsel. Counsel decides whether to answer a Compass complaint with counterclaims or to move to dismiss first. In Washington the counterclaims arrived about a year after the complaint.

• Exposure: a complaint arrives before a litigation hold is in place, and a motion first keeps access allegations out of court for months.

• Mitigation: a litigation hold before any complaint, and signed buyer and agent statements before the first response deadline.

• Residual: documents already created remain discoverable, and the court sets the schedule.

🤝 REALTOR Associations. An association decides whether to take a position on a conduct statute and whether to carry evidence to a state office. An enforcer accepts a narrow request from an interested party that discloses its interest.

• Exposure: a bill drafted by others reaches print without the access rule, and a state office can receive the file and stay silent through mid-2027.

• Mitigation: a position adopted before the California session convenes in December, and the six-question file delivered to one office by March 31, 2027.

• Residual: members who market listings privately will oppose the position, and the office decides alone.

🏛️ State Attorneys General. The office decides whether to open an inquiry. Six document requests produce numbers without reliance on any industry party's account.

• Exposure: listing histories, showing logs and offer logs age out under ordinary retention before any inquiry opens.

• Mitigation: a preservation demand to Compass and its affiliated brands by March 31, 2027.

• Residual: data outside the demand is not preserved.

🏛️ California Lawmakers. The author decides what the first bill contains. A first bill drafted from Washington's text omits the access rule and the representation rule.

• Exposure: the access rule must enter by amendment or wait one legislative year.

• Mitigation: brokerage-neutral access and representation language in the drafting request before the introduction deadline.

• Residual: later amendments can remove the language.

🏛️ California Department of Real Estate. The department decides whether to issue guidance under current license law. Washington's regulator has already stated what public marketing does not require.

• Exposure: enforcement falls on the department, and a bill without a workload estimate stalls in the fiscal committee.

• Mitigation: guidance on showing access by January 1, 2027, and a workload estimate before the first fiscal hearing.

• Residual: enforcement still depends on complaints arriving.

💼 Brokers. A brokerage decides how it handles showings on its own listings and how it documents showings denied elsewhere. A written access policy and a dated log reduce exposure under a suit and under a statute.

• Exposure: brokerage-dependent access practices that a first bill does not prohibit.

• Mitigation: a published brokerage-neutral access policy before the session convenes in December, and a dated log of each denied showing or offer.

• Residual: other firms' listings stay outside the firm's control until a statute or an MLS rule binds them.

Each action is one the institution takes alone, without waiting for Compass or a court.

Compass Can Concede Visibility and Still Contest Access

Compass accepted an agreement in Washington on August 31 and demanded a rule change in California eight days later. The two events are consistent once visibility and access are separated. Compass can concede that a listing is seen by everyone and still contest who may show it and who may bid on it.

California's Legislature can close that gap by statute, and a state attorney general can measure Compass's conduct now. The decisive signals are the text of the first California bill and the first pleading filed against Compass.

MindCast AI Models the Decision Each Institution Faces

MindCast AI applies Predictive Behavioral Economics + Dynamic Game Theory through MindCast AI Proprietary Cognitive Digital Twin Foresight Simulations (MP CDT FS). Behavioral Economics supplies the decision rules. Game Theory supplies the payoff structure. Predictive simulations emerge from the combination.

MindCast publishes in two series, MCAI Economics Vision and MCAI Lex Vision. A commissioned simulation models one institution from its own documents and tests the decision that institution faces: an MLS board's answer to Compass, an association's legislative position or an enforcer's first request. Contact [email protected] to schedule a scoped diagnostic session.

Related Works

Publications

• California Private Listing Law After Washington SSB 6091 — Broker Conduct Rules for Listing Visibility, Showing Access and Buyer Representation

• Compass Private Listings Are Now Public and Access Is the Antitrust Question — A Briefing for MLS Leaders and REALTOR Associations

Cited in the papers

• How State Attorney General Coalitions Form, Grow, and Hold

• Why Compass Needs Private Listings, The Inventory-Routing Premium — Compass, the Anywhere Merger, and the Multi-State Enforcement Window

• Compass's Interpretation of "Public Marketing" May Draw Antitrust Scrutiny from State Attorneys General

• From Inventory Control to Attention Control: The Compass Commission-Consolidation Model After First Look

• The Compass–NWMLS Settlement Changed the Private Governor After Washington Changed the Governing Law

• Compass Plan B, Structural Circumvention After Washington SSB 6091

Foundational works

• The Chicago School Accelerated Part I, Coase and Why Transaction Costs ≠ Coordination Costs

• The Stigler Equilibrium- Regulatory Capture and the Structure of Free Markets

• The Dual Nash-Stigler Equilibrium Architecture

• The Skillman Moment as Analytical Rosetta Stone of the MindCast MLS Equilibrium Series