Procuring cause in real estate is the rule that decides which agent earned the commission when a property sells: the agent whose work set off an unbroken chain of events leading to the closing. It almost always comes up as a dispute between two brokerages, each claiming credit for the same sale, and it is resolved by looking at whose efforts actually produced the buyer’s decision to purchase.
The Unbroken Chain
The National Association of REALTORS® defines procuring cause as “the proximate cause; the cause originating a series of events which, without break in their continuity, result in the accomplishment of the prime object.” The operative words are “without break in their continuity.”
An agent who shows a buyer a property in March, stays in regular contact, helps negotiate terms, and shepherds the deal to closing in May has a strong procuring cause claim. An agent who showed the same home in January and never followed up does not. Opening the front door first is one data point and not the decisive one. What carries weight is sustained involvement: comparative market analysis, financing conversations, inspection issues worked through, counteroffers drafted. Those are the activities that show the agent’s work ran continuously from introduction to signed contract.
What Breaks the Chain
Two concepts come up constantly in these disputes, and either one can wipe out a commission claim.
Abandonment is when an agent stops working with a buyer without good reason. A few showings, then weeks of silence. If the buyer reasonably concludes the agent has lost interest and moves on to someone else, the first agent’s claim is in serious trouble. Panels look hard at whether reasonable efforts were made to keep the relationship alive, and long communication gaps almost always cut against the absent agent.
Estrangement is when the buyer actively ends the relationship because of something the agent did or failed to do. Pushing properties outside the buyer’s budget, missing a counteroffer deadline, going unreachable at a critical moment. If the buyer fires the agent for cause and finds a new one who closes the purchase, the original introduction counts for little.
There is also the independent chain scenario. If a second broker’s work was genuinely separate from the first broker’s, with no overlap in showings, communication, or negotiation, that second broker may have established their own procuring cause. The question panels ask is whether the second broker removed an impediment or provided the services that actually drove the purchase.
How Arbitration Panels Decide
When two brokerages disagree, the dispute typically goes to arbitration through a local REALTOR® association. There is no automatic winner and no rule of thumb that whoever showed the property first prevails. Panels are specifically told to set those assumptions aside.
Instead, the hearing reviews the entire course of events: the nature of the transaction, the listing agreement, any buyer representation agreements, the terms of any compensation offer, and the role each broker played from first contact through closing. The panel weighs whether each broker made reasonable efforts to build and maintain a relationship with the buyer, or whether inactivity gave the buyer reason to believe the broker had disengaged. It looks at whether one broker’s involvement had already ended before another stepped in, and whether a second broker started an entirely new and independent series of events.
The party requesting arbitration carries the initial burden of proof, and the standard is preponderance of the evidence: the panel decides which side’s version is more likely true. The award is final and binding, and the only avenue for challenge is a narrow procedural review on due process grounds, not a rehearing of the merits. Filing fees are typically modest, often around $500, though they vary by association.
Agents who are not REALTOR® members, or disputes outside association jurisdiction, may end up in civil court. The process is slower and more expensive, but courts ask the same underlying question: whose efforts were the direct and continuous cause of the sale?
How Written Buyer Agreements Changed the Analysis
The NAR settlement that took effect on August 17, 2024, changed the ground procuring cause stands on. Offers of buyer-agent compensation are no longer permitted on Multiple Listing Services, and agents working with buyers must sign a written buyer agreement before the buyer tours any home, including live virtual tours. The agreement has to spell out the exact amount or rate of compensation the agent will receive, disclose that commissions are negotiable and not set by law, and cap the agent’s total compensation at the agreed amount regardless of what other sources might offer.
Before 2024, an agent could show a buyer several homes, lose touch, and still argue procuring cause when that buyer later purchased one of them. That argument is much weaker now. If no written agreement existed when the showing happened, the agent’s claim to compensation starts on shaky ground. Procuring cause is still a live legal concept for resolving disputes between brokerages, but it no longer operates alone. The first question in any dispute today is what the written agreement says.
Protection Clauses and the Double-Commission Risk
Procuring cause often surfaces after a listing agreement ends. A buyer tours a home during the listing period, then comes back with an offer two weeks after the seller’s contract with the listing agent has expired. Is the original agent still owed a commission?
Most listing agreements answer that with a protection clause, sometimes called a safety clause or tail provision. If a buyer introduced to the property during the listing period purchases the home within a set window after expiration, the listing agent is still owed the commission. The window is commonly 30 to 45 days, and the length is negotiable.
Trouble starts when a seller relists with a new agent during that window. If one of the original agent’s buyers makes an offer while the new listing is active, the seller can face commission claims from both brokerages. Listing agreements also commonly obligate the seller to pay a commission if the property is withdrawn without the broker’s consent, or if the seller’s own default prevents the sale from closing. A seller who tries to cut out an agent by pulling the listing and selling privately can still owe the commission.
The seller is not a party to the arbitration between the two brokerages. That means a seller can end up owing both commissions if the contract language supports it, with no seat at the table where the question is decided.
What to Do as a Buyer or Seller
If you are buying, read the buyer representation agreement before you sign it. Since August 2024, you will be asked to sign one before touring any home, and it defines what you owe your agent. If you later switch agents, terminate the first agreement in writing. An agent you never signed with has a much harder time claiming you owe them anything, even if they were the first to show you a property.
If you are selling, three parts of the listing agreement deserve close attention: the commission structure, the protection clause duration, and any withdrawal or default provisions. If you switch agents, get the protection clause terms in writing and give the new agent a list of buyers the previous agent introduced, so the new listing agreement can exclude them during the protection window. The time to negotiate these terms is before you sign, not after a buyer materializes and two brokerages are both claiming the fee.