Real Estate Commission Disputes in California: Brokers, Agents, and Listing Agreements

Last updated: October 2026

A real estate commission in California is a contract claim with two special rules. The agreement to pay it generally has to be in writing. (Civ. Code, § 1624, subd. (a)(4).) And the person suing to collect it must have been licensed as a broker or salesperson when the claim arose. (Bus. & Prof. Code, § 10136.) Within those rules, commission disputes are ordinary breach of contract cases. Broker against broker, broker against a seller who cancelled, agent against brokerage over a split. Most are decided by what the listing agreement and the co-listing or referral agreement say. Kolmogorov Law, P.C. handles these disputes for brokerages, agents, and property owners in Orange County, Los Angeles, and across California.

Call (909) 235-6116 or contact us online if a commission is being withheld, or you are being asked to pay one you do not owe.

The disputes that come to us

A co-listing agent brought the buyer for a coastal Orange County sale, and the primary broker now says the brokerage never approved the co-listing fee. A seller cancelled a listing a week before an offer the agent had cultivated came in through a different brokerage. An agent left her brokerage mid-escrow and both she and the brokerage claim the commission. A buyer's agent referred a client to another agent for a 25 percent referral fee that was never paid. A seller learned that the listing agent steered escrow to an affiliated company without disclosure and wants the listing cancelled and the commission reduced.

Each of these turns first on paper. Then on who did the work.

The written agreement

An agreement to pay a real estate commission must generally be in writing and signed by the party to be charged to be enforceable. (Civ. Code, § 1624, subd. (a)(4).) A listing agreement signed by the seller satisfies the requirement. So does a buyer-broker agreement or a written co-listing or referral agreement. A handshake deal between two agents usually does not. Between licensees the courts have sometimes found exceptions based on the parties' course of dealing. We start every commission case by collecting the signatures.

The listing agreement also answers the most common seller question. Most California listing forms provide that the commission is earned if, during the listing period, the property is sold or a ready, willing, and able buyer is procured. Many add a protection period after expiration for buyers the agent introduced. A seller who cancels to avoid the commission and then sells to a buyer the agent found is usually still liable.

Licensure

No person acting as a real estate broker or salesperson may sue to collect compensation for those acts without alleging and proving licensure at the time the cause of action arose. (Bus. & Prof. Code, § 10136.) An expired license on the day the commission was earned is a complete defense, and it is the first thing a defending brokerage checks. A salesperson, moreover, can generally be paid only through the broker under whom the license is held, which is why agent-versus-brokerage disputes are framed as claims under the independent contractor agreement rather than direct claims against the seller.

Co-listing, referral, and split disputes

Disputes between licensees are decided by the co-listing or referral agreement and by the brokerage's independent contractor agreements with each agent. The recurring fights are predictable. Was a broker's authorization required, and was it obtained. Was the co-listing fee contingent on the sale closing. What happens when the agent who procured the buyer changes brokerages before closing. Is a referral fee owed on a transaction that closed after the referred client walked away and came back.

Where the facts are disputed, the question of procuring cause, meaning which agent's efforts were the predominant cause of the sale, is decided on evidence: showings, offers, communications with the buyer. Many brokerage agreements and association rules send these disputes to arbitration before the local association of Realtors, and a court will enforce that; see our page on motions to compel arbitration.

Owners' claims against brokers

Sellers and buyers also have claims. A broker who steered escrow or title to an affiliated company without the required disclosure may forfeit the commission and owe damages. The same is true of a broker who failed to present an offer, misrepresented the property, or had an undisclosed interest in the transaction. Those claims rest on the broker's statutory and fiduciary duties, and they are the usual answer when a seller is sued for a commission after cancelling a listing in frustration. Our page on breach of a real estate contract covers the related purchase and sale disputes.

Fees and forum

Standard listing and purchase forms contain attorney fee clauses and, often, mediation requirements that must be satisfied before a party can recover fees. The fee clause is reciprocal under Civil Code section 1717. A party who skips the contractual mediation step can lose the right to fees even after winning, so we calendar it before filing.

Where these cases are heard

Commission disputes under $35,000 are limited civil cases; larger ones are unlimited civil cases in the Superior Court: the Central Justice Center in Santa Ana for Orange County, the Stanley Mosk Courthouse for Los Angeles. Disputes between members of a Realtor association often go to the association's arbitration panel first under the parties' membership obligations.

What to bring to the first meeting

Bring the listing agreement, any co-listing, referral, or buyer-broker agreement, the brokerage's independent contractor agreement if an agent is involved, the escrow instructions and closing statement, the MLS history, and the communications showing who introduced the buyer and when. Bring your license history as well; it will be checked.

Frequently asked questions

Can a seller cancel a listing to avoid paying a commission?

A seller can usually cancel a listing, but cancellation does not erase a commission already earned, and most listing agreements include a protection period covering buyers the agent introduced. The listing form's exact language controls.

Does a real estate commission agreement have to be in writing in California?

Generally yes. An agreement to pay a commission for the sale or lease of real estate must be in writing and signed by the party to be charged. (Civ. Code, § 1624, subd. (a)(4).) Agreements between licensees to split a commission are treated somewhat differently, but a signed writing is still the safe course.

Can an unlicensed person sue for a real estate commission?

No. A person acting as a broker or salesperson must allege and prove licensure at the time the cause of action arose to maintain an action for compensation. (Bus. & Prof. Code, § 10136.)

What is procuring cause?

The agent whose efforts were the predominant cause of bringing about the sale. It decides disputes between agents who both worked with the same buyer, and it is proven with the showing and offer history.

Do commission disputes go to court or arbitration?

Disputes between Realtor association members usually go to the association's arbitration first. Disputes with sellers and buyers follow the contract's dispute clause, which commonly requires mediation before suit. Court is the fallback.

Talk to a California real estate litigation attorney

If a commission is in dispute, on either side of it, call (909) 235-6116 or contact us online. Kolmogorov Law, P.C. is at 327 Magnet, Irvine, CA 92618, and handles real estate and brokerage disputes in Orange County, Los Angeles, and throughout California. See also our real estate litigation and breach of contract pages.

This page provides general information about California law and is not legal advice. Outcomes depend on the listing and brokerage agreements, the license status, the transaction history, and the forum.