You can host an open house for another brokerage, and it’s a routine arrangement, but doing it legally takes written consent from both managing brokers and the property seller, a defined agency relationship, authorized lockbox access, and a co-hosting agreement that spells out leads and compensation before the event. Miss any of those pieces and you’re performing licensed activity outside your authority.
The Three Consents You Need
Every state treats a real estate salesperson as an agent of their employing broker. You can only perform licensed activities under your broker’s authority, so your managing broker has to approve any work you do on a listing held by a different firm. The listing broker also has to consent, because the listing agreement is a contract between that brokerage and the seller. Without both brokers signing off, the guest agent is acting outside their authorized scope.
The consent most agents forget is the seller’s. The listing contract gives the listing brokerage permission to market the property; it doesn’t automatically extend to introducing an outside agent into the seller’s home. The seller should sign a written authorization acknowledging the guest agent’s role, their firm affiliation, and who bears responsibility for issues during the event. Skipping seller consent isn’t just an ethical problem. It can expose the listing agent to a fiduciary-duty claim.
State real estate commissions impose administrative fines that typically run into the low thousands per offense for agency-rule violations, and serious or repeated violations can result in license suspension or revocation. The specifics vary by jurisdiction. The principle doesn’t: no broker authorization, no legal authority to act.
What Role You’re Actually Playing
When you host an open house for another brokerage’s listing, you’re generally acting as a subagent of the seller unless a different arrangement is spelled out in writing. Subagency means you owe the seller the same fiduciary duties the listing agent owes. You’re working with buyers who walk in, but you’re working for the seller. That distinction matters when a buyer starts asking about the seller’s motivation, the lowest price they’d accept, or how long the property has been sitting.
Subagency also creates vicarious liability: the listing broker and the seller can be held responsible for your conduct while you’re functioning as a subagent. That’s why listing brokers are selective about which outside agents they let into their sellers’ homes, and why the written agreement between the brokerages needs to address liability allocation.
Some states have moved away from default subagency, and your agreement may put you in a different capacity. Whatever the arrangement, define it before you set foot in the property. If a buyer you meet wants you to represent them on a purchase, you’ll need the seller’s permission to switch roles, and the buyer will need to sign a representation agreement with you. Address the role-switching in the co-hosting agreement upfront so you’re not sorting it out during the event.
Lockbox Access Through the MLS
Physical access to the property runs through the local MLS and its lockbox system. Electronic lockboxes record which agent opened them and when, creating an audit trail that protects the homeowner and establishes accountability.1National Association of REALTORS®. Lock Box Section 1: Lock Box Security Requirements (MLS Policy Statement 7.31) The listing agent cannot simply hand over their lockbox credentials. Doing so defeats the tracking system and can result in fines from the local board.
The correct procedure is to coordinate with the listing agent and the MLS so that your own credentials are authorized for the specific property during the open house window. Some boards require the hosting agent’s information to be temporarily updated in the system, and in some markets that administrative step takes a few days. Plan ahead. Showing up Saturday morning expecting instant access is a locked door and a wasted afternoon.
Written Buyer Agreements After the 2024 Rule
The 2024 NAR settlement changed how agents interact with buyers. As of August 17, 2024, MLS participants working with a buyer must enter into a written agreement before touring a home, and the agreement must include a specific, conspicuous disclosure of the compensation the agent will receive or how that amount will be determined.2National Association of REALTORS®. Summary of 2024 MLS Changes
For open houses, the important carve-out is this: visitors walking through on their own do not need to sign a written buyer agreement just to look at the property.3National Association of REALTORS®. Consumer Guide to Written Buyer Agreements The moment a visitor asks you to do something beyond answering basic questions about the listing, like preparing an offer or showing them other properties, you’ve crossed into representation territory and a written agreement is required before you proceed. Know exactly where that line sits. If you cross it wrong, the consequences fall on you and your broker, not the listing firm.
Who Owns the Leads
The question every guest agent has: who gets to work with buyers who walk in? The answer depends on whether the buyer already has a representation agreement and what you do when you find out.
NAR’s Code of Ethics requires you to make reasonable efforts to determine whether any visitor is already exclusively represented by another agent. If a buyer says they’re working with someone, you need to find out whether that relationship is exclusive. Failing to ask is itself an ethical violation. If the buyer is exclusively represented, you generally cannot solicit their business; you can only assist them if they initiate the specific transaction.4National Association of REALTORS®. Case Interpretations Related to Article 16
For unrepresented visitors, the guest agent can typically pursue a buyer-agent relationship, but this needs to be spelled out in the co-hosting agreement beforehand. Some listing brokers want every lead from the open house directed back to their office. Others let the guest agent work with any unrepresented buyers they meet. The worst outcome is arguing about it after a deal is on the table. Get lead ownership in writing before the event.
How the Hosting Fee Actually Gets Paid
A common misconception is that open house hosting fees are governed by the Real Estate Settlement Procedures Act. RESPA’s anti-kickback and fee-splitting provisions in Section 8 apply specifically to settlement services connected to federally related mortgage loans, and the statute explicitly exempts payments made through cooperative brokerage and referral arrangements between agents and brokers.5Office of the Law Revision Counsel. United States Code Title 12 – Section 2607 A flat hosting fee for sitting an open house doesn’t typically fall under RESPA.
What does govern the payment is state licensing law. Every state requires compensation for real estate services to flow through the agent’s employing broker, not directly from one agent to another. If the listing brokerage wants to pay a guest agent a hosting fee, the payment goes from the listing brokerage to the guest agent’s brokerage, which then pays the agent under their internal split. Skipping the broker and paying an agent directly violates state licensing statutes and can put both agents’ licenses at risk.
Hosting fees are usually a flat amount per event rather than a commission percentage. If the guest agent ends up representing a buyer who purchases the property, a separate commission-sharing agreement between the brokerages governs that transaction, and the compensation must appear on the closing disclosure. Document any fee arrangement in a written agreement signed by both brokers before the open house takes place.
Tax Reporting on Brokerage-to-Brokerage Payments
When one brokerage pays another for services like open house hosting, the paying brokerage should collect a completed Form W-9 from the receiving brokerage before issuing payment. The W-9 provides the taxpayer identification number needed for the information return and determines whether backup withholding applies. If the receiving brokerage doesn’t return the W-9, backup withholding kicks in immediately for nonemployee compensation payments.6Internal Revenue Service. Instructions for the Requester of Form W-9
For the 2026 tax year, the reporting threshold for Form 1099-NEC (nonemployee compensation) increased to $2,000, up from $600. Payments at or above that amount must be reported to the IRS. The brokerage issuing payment furnishes a copy to the recipient by January 31 and files with the IRS by February 28, or March 31 if filing electronically.7Internal Revenue Service. Publication 1099 General Instructions for Certain Information Returns (2026) Even if a single hosting fee falls under $2,000, brokerages that regularly use guest agents should track cumulative payments to the same payee across the calendar year.
What the Co-Hosting Agreement Should Cover
A written co-hosting agreement should address, at a minimum:
- The property address, date, and specific start and end times of the open house.
- Both managing brokers named with their license numbers, establishing the chain of authority.
- The agency relationship: whether the guest agent is acting as a subagent of the seller or in another capacity, and what happens if the guest agent wants to represent a buyer met at the event.
- Lead ownership: who gets to work with unrepresented buyers who visit.
- Compensation: the hosting fee amount, how and when it will be paid brokerage-to-brokerage, and any commission-sharing terms if a sale results.
- Duties and liability: responsibilities like collecting visitor sign-in sheets, securing the property afterward, and which brokerage’s insurance covers incidents during the event.
- Confirmation that the seller has authorized the guest agent’s involvement in writing.
Both brokers sign, and many firms require electronic signatures for the audit trail. The completed document gets uploaded to both brokerages’ compliance systems. Once the paperwork is finalized, the guest agent can coordinate with the MLS for lockbox access and begin marketing the event. Everything in writing before the day gives you something concrete to point to if a dispute comes up later.