When two brokerages work the same commercial lease, one representing the landlord and one representing the tenant, the commission has to be divided between them. That division is the co-broker split. It is a different thing from the split between you and your own firm, and confusing the two is a common way brokers miscount what they will actually take home. This guide covers how co-broker splits work, the common structures, and what to do when one goes sideways.
A co-broker split divides the total commission on a deal between the two brokerage firms involved, the landlord-side firm and the tenant-side firm. It happens at the firm-to-firm level, before your personal share is calculated. So on a co-brokered deal there are really two divisions stacked on top of each other: first the commission splits between the two firms, then your portion splits with your own house. The house-split layer is covered separately in the guide on broker-brokerage splits.
In most commercial leasing deals the landlord pays the full commission, and that commission is shared between the landlord's listing brokerage and the tenant's representing brokerage. The listing side is engaged by the landlord to lease the space. The tenant side is engaged by the tenant to find and negotiate it. Both contributed to the deal, so both are paid, out of the commission the landlord funds.
The way the commission divides between the two firms is set by agreement, usually before the deal closes.
The co-broker split determines a large part of your fee, so finding out late is a mistake. Before you invest heavily in a deal, confirm what the cooperating commission is and how it divides. A listing that offers an unusually low cooperating share changes the economics of representing a tenant there, and you want to know that going in, not at payout.
Disputes happen, usually over whether the cooperating commission was clearly agreed, or how much each side is owed. The best protection is documentation: a written commission agreement or a confirmed cooperating commission before the deal closes, so there is no ambiguity at payout. If a payment is held up while a split is reconciled between firms, that is a timing issue covered in the guide on why your commission is delayed. If there is a genuine dispute over entitlement, the commission agreement language governs, and it may warrant legal review.
The total commission, usually funded by the landlord, is divided between the landlord-side and tenant-side brokerages, often evenly but sometimes unevenly, as set in the listing or commission agreement. Each firm then splits its share with its own brokers.
No. The co-broker split is firm-to-firm on the deal. Your split with your own brokerage is a separate, second division of your firm's share. See the guide on broker-brokerage splits.
Confirm the cooperating commission in writing before the deal closes. A clear, pre-agreed number in the listing or commission agreement is the best protection against a disagreement at payout.
This guide is general information for commercial real estate brokers and is not financial, tax, or legal advice. Split terms depend on your agreements. For disputes, consult an attorney.
