CRMLS Lawsuit Against Compass, Dueling Antitrust Suits Over MLS Listing Rules, Office Exclusives and the Clear Cooperation Policy

California Regional Multiple Listing Service (CRMLS) and Compass are now suing each other. On October 5, 2026, CRMLS filed first in the U.S. District Court for the Southern District of New York, asking a judge to declare that its listing “Cooperation Rules” are lawful under federal and California antitrust law and to bar Compass from suing over them. On October 16, 2026, Compass filed its own antitrust lawsuit against CRMLS, which was reported as filed in the Central District of California, challenging the rules that fine agents who publicly market a listing without submitting it to the MLS. Neither court has ruled on the merits, and no settlement has been reported.

The case turns on one question: can a brokerage publicly advertise a seller’s home while keeping it out of the shared MLS, or can an MLS require that a publicly marketed exclusive listing be submitted to the cooperative database?

CRMLS v. Compass: Quick Facts

Detail	Information
Lawsuit 1: CRMLS v. Compass	California Regional Multiple Listing Service, Inc. v. Compass, Inc., No. 1:26-cv-08796
Court / filing date	U.S. District Court, Southern District of New York; filed October 5, 2026 (summons issued October 6)
What CRMLS asks	Declarations that CRMLS Rules 7.9 and 7.9.1 are lawful under Sherman Act § 1 and California’s Cartwright Act; a permanent injunction barring Compass from pursuing antitrust claims over the rules; attorneys’ fees and costs
Lawsuit 2: Compass v. CRMLS	Filed October 16, 2026; reported in the Central District of California
What Compass asks	A court order ending enforcement of the rules, plus damages, which antitrust law triples
Compass’s demand letter	September 8, 2026; deadline October 6 at 5 p.m. ET
CRMLS’s rejection	September 30, 2026
The challenged fine	1% of list price, minimum $500, maximum $2,500, plus possible suspension or referral for discipline
CRMLS enforcement data (from its complaint)	89 Rule 7.9 fines in 2025 (8 to Compass agents); about 300 Rule 7.9 cases processed in 2026 through October 5, about 75 involving Compass listings
Judge	Docket listing identifies Judge Mary Kay Vyskocil; RISMedia reported Magistrate Judge Katharine H. Parker; confirm on the docket
Compass’s fine-payment offer	Compass says it will pay fines for agents at Compass, Coldwell Banker Realty and Sotheby’s International Realty who market a home outside CRMLS at a client’s written direction
Status	Two suits pending; no ruling or settlement; no consumer claim form

1. What Is CRMLS and What Rule Is in Dispute?

CRMLS is a large California multiple listing service. Participating brokers share listing information through the MLS and agree to follow its rules.

• Rule 7.9 (“Mandatory Submission upon Marketing”) implements NAR’s Clear Cooperation Policy. For listings under an exclusive listing agreement, the broker must submit the property to the MLS within one business day of marketing it to the public. Public marketing can include yard signs, websites, social media, email blasts and public apps.
• Rule 7.9.1 lets a seller with an exclusive listing agreement keep a property out of the MLS with written instructions, as long as it is not publicly marketed. CRMLS calls these “No Cooperation Listings.”

What are the penalties?

Under CRMLS’s citation policy, a Rule 7.9 violation carries a fine of 1% of the list price, with a $500 minimum and a $2,500 maximum. Agents who neither pay nor request a review within 20 days can be suspended, and agents cited more than three times in a calendar year are referred to their local association for discipline that can include termination of MLS services.

2. How the Dispute Reached Court

• September 8: Compass’s lawyers sent CRMLS a letter demanding it confirm in writing by October 6 that it would stop fining or punishing agents who publicly market office-exclusive listings, or face a federal antitrust suit. Compass said it would seek attorneys’ fees and treble damages. According to CRMLS’s complaint, the letter was copied to the Justice Department’s Antitrust Division and the FTC’s Bureau of Competition.
• September 30: CRMLS rejected the demand, saying Compass wanted to “benefit from the cooperative” while hiding its own publicly marketed homes from other participants.
• Early October: Compass CEO Robert Reffkin publicly said Compass would begin suing MLSs in mid-October.
• October 5: CRMLS filed first in the Southern District of New York, one day before Compass’s deadline.
• October 16: Compass filed its own lawsuit against CRMLS and announced the fine-payment offer.

Compass has also threatened other MLSs. The Central Texas MLS (Unlock MLS) publicly refused a similar demand in early October, and a Compass spokesperson said Compass planned to sue it.

3. CRMLS’s Position

CRMLS argues that its rules protect a cooperative marketplace and prevent “free riding.” Its complaint says Compass “wants to free-ride on the comprehensive listing contributions of thousands of cooperating brokerages while hoarding its own inventory,” and that a brokerage cannot have it both ways.

CRMLS’s other points:

• Seller options exist. It says sellers can use a non-exclusive agreement to market publicly without MLS submission, can choose a No Cooperation Listing, or can use Coming Soon status and other limited-exposure options.
• Enforcement increased for Compass. It says Compass cases surged in 2026, and that 10 Compass cases were open when it filed, eight of them under appeal.
• Compass’s earlier settlement. CRMLS points to Compass’s earlier settlement with Northwest MLS and argues Compass accepted rules there that in some respects were more restrictive than Rule 7.9.
• Antitrust exposure. It says giving in could expose CRMLS to antitrust claims from buyers or buyer agents who cannot access publicly marketed homes.

4. Compass’s Position

Compass says homeowners should be able to publicly market any listing, including office exclusives, without their agent facing thousands of dollars in fines. Its main points, as reported:

• Competitor-controlled rules. It says every member of CRMLS’s board of directors is a direct competitor of Compass and its agents, yet they set how those agents can compete and how homeowners can market their homes.
• Other MLSs allow it. It says MLSs covering roughly 350,000 agents in 12 states and Washington, D.C., already allow public marketing of listings kept off the MLS.
• Builders and developers are exempt. It argues builders and developers are not subject to the rules and individual homeowners should have the same options.
• Remedies. It seeks an order ending the rules, damages (trebled by antitrust law) and recovery of fines.

These are allegations. I did not review the full Compass complaint, so confirm which specific statutory counts it pleads before describing them.

What is Compass’s fine-payment offer?

Compass said it will pay CRMLS fines for agents affiliated with Coldwell Banker Realty, Compass and Sotheby’s International Realty who market homes outside CRMLS at a client’s written direction. Agents must send Compass the fine notice and assign Compass their right to sue CRMLS over the fine, and Compass said it will add those claims to its lawsuit. The offer is not a general promise to cover every agent’s fines.

5. Office Exclusives, Delayed Marketing and Other Listing Types

Terms are easy to confuse. Under NAR’s 2025 “Multiple Listing Options for Sellers” policy, as described in public materials:

Listing type	How it works
Office exclusive	Seller directs that the property not be distributed through the MLS and not be publicly marketed; the exempt listing is filed with the MLS but not disseminated
Delayed-marketing exempt listing	Property is filed with the MLS, but the seller can delay public marketing through IDX and syndication for a period the local MLS permits
Coming Soon	Entered in the MLS under local rules, with restrictions that can include showings
Active MLS listing	Normal cooperative distribution

The fight is not about whether a seller can keep a home private. It is about whether an exclusive listing can be publicly advertised while staying outside the cooperative database.

NAR’s Clear Cooperation Policy is an industry policy applied through MLS rules, not a federal statute. NAR’s policy also requires written seller disclosure documenting the benefits being waived or delayed by an exempt listing.

6. The Antitrust Laws Involved

Sherman Act § 1 (15 U.S.C. § 1)

Section 1 prohibits contracts, combinations and conspiracies that unreasonably restrain trade. An MLS is typically run by or for competing brokers, so Compass argues that rules limiting how members advertise are a restraint adopted by competitors. CRMLS argues the rules are procompetitive because they keep the shared database comprehensive and stop free riding.

Courts usually apply the rule of reason to this kind of restraint, weighing competitive harm against procompetitive justifications based on the market and the evidence. Joint ventures and cooperatives are often analyzed that way, and Northwest Wholesale Stationers v. Pacific Stationery & Printing Co., 472 U.S. 284 (1985), is a well-known case about a cooperative’s membership rules. Whether a challenged restraint is treated under the rule of reason or a more demanding standard depends on the facts and precedent.

Sherman Act § 2 (15 U.S.C. § 2)

Section 2 addresses monopolization and attempted monopolization and requires monopoly power plus exclusionary conduct. CRMLS’s complaint, as reported, seeks declarations under Sherman Act § 1 and the Cartwright Act, not a § 2 claim. Whether Compass pleads § 2 is something to confirm in its complaint.

California’s Cartwright Act (Cal. Bus. & Prof. Code § 16720 et seq.)

California’s antitrust statute prohibits certain combinations that restrain trade. CRMLS asks for a declaration under it, so state law is part of the case. A prevailing plaintiff under the Cartwright Act can generally recover treble damages (§ 16750).

Clayton Act §§ 4, 16 and 26 (15 U.S.C. §§ 15, 26)

Section 4 lets a person injured in business or property by an antitrust violation sue for three times the damages plus costs and attorney fees. Section 16 allows injunctive relief against threatened antitrust injury. Compass has invoked treble damages; none has been awarded.

Declaratory Judgment Act (28 U.S.C. § 2201)

This statute lets a federal court declare the rights of parties in an “actual controversy.” It does not create jurisdiction on its own. Compass’s demand letter, its deadline and public statements are what CRMLS points to as showing a concrete threat. The court has discretion to hear a declaratory action and may consider whether it was filed in anticipation of the other side’s suit.

7. Which Court Will Hear the Case?

The same dispute is now pending in two federal districts. Key procedural issues:

• First-to-file rule. Federal courts often favor the court where the first suit was filed (here, the Southern District of New York, filed October 5).
• Anticipatory declaratory suits. Courts can decline to follow first-to-file if a declaratory action looks like forum shopping. Compass can be expected to argue that CRMLS filed to pre-empt its suit and to choose Compass’s home forum.
• Transfer and consolidation. A party can ask to transfer a case to a more convenient district under 28 U.S.C. § 1404(a), and the courts may coordinate the cases.
• Jurisdiction and venue. CRMLS says the New York court has jurisdiction because Compass is headquartered there and does substantial business in the district. Compass’s California suit raises the question of whether California is the better forum.

No ruling on venue was reported as of October 18.

8. What Happened in Compass’s Earlier MLS Disputes?

• Northwest MLS. Compass sued Northwest Multiple Listing Service in the Western District of Washington. Public reports say the court denied the MLS’s motion to dismiss on March 19, 2026, finding Compass plausibly stated claims, without deciding the merits. Compass announced a settlement on August 31, 2026, which reportedly introduced a “First Look” listing status.
• Zillow. A federal judge in the Southern District of New York denied Compass’s request for a preliminary injunction in February, and Compass later dismissed that action.

A denied motion to dismiss and a settlement do not decide whether CRMLS’s rules are lawful. Different MLSs have different rules and market facts, and neither outcome binds the courts hearing the CRMLS dispute.

9. Could the Fair Housing Act Matter?

The Fair Housing Act (42 U.S.C. § 3604) prohibits housing discrimination based on protected characteristics. Policy debates over private listings sometimes raise concerns about limited exposure and who learns of a home. But neither lawsuit has been reported to allege a Fair Housing Act violation, and limited marketing does not by itself prove discrimination. Keep that issue separate from the antitrust claims.

10. What Could Happen Next?

Possible development	What it could mean
Motions on venue or transfer	The court decides where the dispute is heard
Motion to dismiss or stay	A court may challenge the declaratory action or the antitrust claims
Discovery and merits review	Evidence on competitive effects, seller choice and MLS operation
Settlement or rule change	CRMLS could revise procedures, as happened with Northwest MLS
Rulings affecting other MLSs	A ruling would not automatically invalidate every MLS policy nationwide

These are possibilities, not predictions.

11. What Does This Mean for Sellers, Agents and Buyers?

Sellers

The lawsuits do not create a new right to publicly market an exclusive listing while keeping it off the MLS. Until a rule changes or a court orders otherwise, sellers should understand the options their agent offers: an active MLS listing, Coming Soon, a delayed-marketing or no-cooperation arrangement, or a non-exclusive agreement. Keeping a home off the MLS can reduce exposure to buyers who rely on MLS data. Compass says private or phased marketing offers privacy and control. Neither approach suits every seller.

Agents and brokers

Rule 7.9 continues to apply. A sign, website listing, social media post or other public marketing can trigger the one-business-day submission requirement for an exclusive listing. Agents should get clear written seller instructions and should not assume the pending suits suspend the rule.

Buyers

If homes are marketed publicly but not in the MLS, buyers working with other agents may not see them. CRMLS makes that argument. Compass argues sellers should be able to choose. Neither side’s claims about market outcomes have been decided.

Is this a class action?

No. These are suits between CRMLS and Compass. No class action, settlement fund or claim form for consumers has been announced.

Frequently Asked Questions

Who sued first?

CRMLS, on October 5, 2026, in the Southern District of New York. Compass filed its own suit against CRMLS on October 16.

What does CRMLS want?

Declarations that Rules 7.9 and 7.9.1 are lawful under Sherman Act § 1 and the Cartwright Act, an injunction barring Compass from suing over them, and attorneys’ fees and costs.

What does Compass want?

An order ending enforcement of the rules and damages, which antitrust law triples, plus recovery of fines.

How big is the fine?

1% of list price, with a $500 minimum and $2,500 maximum, plus possible suspension or discipline.

Will Compass pay agents’ fines?

It says it will pay fines for agents at Compass, Coldwell Banker Realty and Sotheby’s International Realty who market homes outside CRMLS at a client’s written direction, if they assign their claims to Compass.

Is the Clear Cooperation Policy a law?

No. It is NAR policy implemented through MLS rules.

Can I join the lawsuit or claim money?

No. There is no class action or claim form.

Could the case change MLS rules nationwide?

It could influence the debate, but a ruling in one case would not automatically invalidate every MLS policy.

Where can I follow the case?

The Southern District of New York docket (No. 1:26-cv-08796) and the Central District of California docket for Compass’s case.

Sources and Legal References

1. Inman — Compass files antitrust suit against CRMLS over listing rules (October 16, 2026). https://www.inman.com/2026/10/16/compass-sues-crmls-antitrust-listing-rules/
2. The Real Deal — Compass sues CRMLS over listing policies (October 16, 2026). https://therealdeal.com/national/2026/10/16/compass-sues-crmls-over-listing-policies/
3. Inman — CRMLS files federal suit against Compass in escalating MLS battle (October 6, 2026). https://www.inman.com/2026/10/06/crmls-compass-rules-listings-antitrust/
4. Inman — What CRMLS’s lawsuit reveals about its escalating Compass fight (October 7, 2026). https://www.inman.com/2026/10/07/crmls-compass-art-carter-ed-zorn-lawsuit-coming-soon/
5. HousingWire — CRMLS moves first, asking court to block Compass antitrust claims (October 6, 2026). https://www.housingwire.com/articles/crmls-sues-compass-mls/
6. RISMedia — Court Report: CRMLS files suit against Compass (October 12, 2026). https://www.rismedia.com/2026/10/12/court-report-scotus-declines-to-hear-zillow-shareholder-case-compass-hears-from-two-mlss/
7. Justia — California Regional Multiple Listing Service, Inc. v. Compass, Inc., No. 1:26-cv-08796 (S.D.N.Y.). https://dockets.justia.com/docket/new-york/nysdce/1:2026cv08796/674437
8. Compass’s September 8, 2026 demand letter and CRMLS’s September 30, 2026 response. https://go.crmls.org
9. CRMLS — Clear Cooperation Policy, Rules and Policies, and Citation Policy. https://go.crmls.org/clear-cooperation-policy/
10. National Association of REALTORS — Multiple Listing Options for Sellers. https://www.nar.realtor/about-nar/policies/multiple-listing-options-for-sellers
11. 15 U.S.C. §§ 1, 2, 15, 26 (Sherman and Clayton Acts); 28 U.S.C. §§ 1404(a), 2201.
12. California Business and Professions Code § 16720 et seq. (Cartwright Act).
13. Northwest Wholesale Stationers, Inc. v. Pacific Stationery & Printing Co., 472 U.S. 284 (1985).
14. 42 U.S.C. § 3604 (Fair Housing Act).

For related reading from AllAboutLawyer.com, see NAR Homebuyer $120M Settlement, File By Oct. 27, 2026, which concerns commission-related antitrust claims rather than the listing-submission rules challenged here.

Disclaimer: This article explains publicly reported allegations and potentially applicable law. It does not establish that Compass or CRMLS violated any law, and it is not legal advice. Both cases are unresolved. Statutes and procedural rules are summarized and depend on the facts.