Open house buyer already has an agent — and you're standing at the door, clipboard in one hand, wondering exactly what the rules are. It is one of the most common situations in residential real estate and one of the least clearly covered in training. The short answer is: be professional, be hospitable, document the visit, and stay in your lane. The longer answer is what this guide is about.
Why this situation comes up constantly
Buyer agency agreements are more common now than they were a few years ago, and the 2024 NAR settlement accelerated that shift. More buyers walk into open houses having already committed — on paper — to working with a specific agent. You are going to see this at almost every open house you host. Some visitors will volunteer the information immediately ("just so you know, we're already working with someone"). Others won't say anything unless you ask. A few won't know the question is coming and will look uncomfortable when it does.
Understanding how to handle all three of those situations keeps your open house running smoothly, protects the seller's interest in your role, and keeps you out of professional hot water. It also keeps the door open — literally — for a positive impression that may matter later.
What "already has an agent" actually means
Before you can respond well, it helps to know what you are responding to. When a visitor tells you they have an agent, that could mean:
- They have a signed buyer representation agreement with an agent at another brokerage.
- They have been working informally with someone but haven't signed anything.
- They toured a house with someone once six months ago and consider that "having an agent."
- They are using "I have an agent" defensively, because they expect a pitch and want to head it off.
You do not need to interrogate which category applies. For your purposes at the door, all four get the same professional response. The distinction matters more to their agent, to your broker in a commission dispute, or to a state agency reviewing your disclosure practices — not to how you greet someone in an entryway.
The right approach at the door
Your job during an open house is threefold: represent the seller's interests, document who toured the property, and maintain a professional presence. None of those change when a buyer mentions they have an agent.
A simple, gracious script works in most situations:
"Thanks for coming in — the sellers appreciate it. Go ahead and sign in, and feel free to take your time looking around. I'm here for any questions about the property itself."
That is it. You are not dismissing them, not recruiting them, and not delivering a disclaimer that feels like a warning. You are being a professional who has a clear role.
If they volunteer their agent's name or brokerage, acknowledge it naturally:
"That's great — they'll want to know you saw this one. The sign-in sheet just keeps a record for the sellers. Take a look and let me know if you have any questions about the house."
What you avoid is any language that sounds like solicitation. Phrases like "Are you getting everything you need from your agent?" or "Let me know if you ever want a second opinion" are off-limits. Your state's real estate commission rules likely prohibit direct solicitation of a buyer who has a signed representation agreement with another licensee. Check with your broker if you are unsure where that line sits in your jurisdiction — the specific rules vary more than people expect.
Getting the sign-in without making it weird
Here is where a lot of agents stumble. They hear "I already have an agent" and either skip the sign-in entirely (bad) or turn it into an interrogation (also bad). Neither helps you.
The sign-in is for the seller, not just for your lead pipeline. The seller has a right to know who toured their property. A represented buyer's entry in your log is just as important as anyone else's — arguably more so, because it documents that this person was at the property, under your supervision as the listing agent, on this date.
Ask everyone to sign in. If a represented buyer hesitates, you can say:
"I keep a record for the sellers so they know who's been through — it's really about their home, not a sales thing."
Most people accept that without further friction. On a digital form, the fact that signing in is fast and private helps. There is no clipboard of previous visitors' names to read, no lender ad at the end, no form that looks like a marketing funnel. Visitors who are already working with someone are more likely to sign in if the form looks straightforward and professional rather than like the first step of a drip campaign.
The sign-in question structure matters here too. If your form has eight required fields, a represented buyer who came to look at the house — not to start a relationship with you — will often skip signing in rather than work through it. Four required fields and one optional "Are you working with an agent?" drop-down gets you a completed record without the friction. Mark their representation status in your notes the moment they walk away from the kiosk.
Procuring cause: what you need to know (and what to ask your broker)
Procuring cause comes up in conversations about represented buyers at open houses more than it should, because it is often misunderstood. Here is a plain explanation.
Procuring cause is the standard used — primarily in arbitration between brokerages — to determine which agent created the uninterrupted chain of events that led to a sale, and therefore which agent earns the buyer's commission. It is not a rule you apply at the door of an open house. It is a determination made after a transaction, usually when two agents each claim a commission on the same buyer.
An open house visit alone is almost never enough to establish procuring cause. Procuring cause typically requires an ongoing, uninterrupted series of contacts — showing properties, writing offers, negotiating — that directly leads to the purchase. A buyer touring your listing on a Saturday afternoon is generally not enough to create a competing claim to their agent's commission, even if that buyer eventually buys through you months later after their original agent relationship ends.
That said, do not treat this as a rule you can rely on in every situation. Procuring cause disputes are decided case by case, and the facts matter enormously. The buyer's relationship with their current agent, the nature of your contact with them, what happened between the open house and any eventual transaction — all of that feeds into an arbitration panel's decision. The NAR research and statistics hub publishes industry data and policy resources that give broader context, but for your specific situation, talk to your broker before you are in a dispute, not after.
The practical upshot: don't try to peel represented buyers away from their agents at your open house. It is not good ethics, it is not good strategy, and it creates the kind of facts that make procuring cause disputes messy.
Disclosure: who you represent and why it matters
When a buyer with an agent walks into your open house, they are still entitled to know who you represent. In most states, you are required to disclose your agency relationship — that you are the listing agent representing the seller — to everyone who tours the property, regardless of whether they have their own representation. The timing and format of that disclosure varies by jurisdiction.
Some states require a written disclosure before any "substantive contact" — a term that is itself actively debated in the post-NAR-settlement environment. What counts as substantive contact, and what you have to hand over before it happens, is covered in more detail in the guide on first substantive contact rules. The short version: if you are having an open house, you need to have talked to your broker about your state's disclosure requirements before the first visitor walks in the door.
For represented buyers specifically, the disclosure that you represent the seller matters because it clarifies something they may assume: that you are a neutral party or a buyer's resource. You are not. You are the seller's agent. Saying so early — before they start asking you about what the seller would take, whether the roof is old, or whether there's been any interest — is not awkward. It is professional and legally prudent. The related guide on buyer agency disclosure requirements at open houses covers what different state frameworks actually require.
Some agents also use a non-agency disclosure for open houses hosted by an agent who does not represent the seller (for example, a team member hosting on behalf of the listing agent). If that describes your situation, see the guide on open house non-agency disclosure for what that form is and when it applies.
What to do with the information after they leave
You documented the visit. You noted that this visitor is represented. Now what?
Follow-up for represented buyers is different from your standard open house lead outreach. A few principles:
Do not pitch them. They have an agent. Sending them a "here are some similar homes I found for you" email crosses the solicitation line. A professional courtesy follow-up — "Thanks for coming by the listing at [address]. Let me know if you or your agent have any questions about the property" — is appropriate. Anything beyond that starts to look like recruiting.
Do inform their agent if there is a reason to. If the buyer seemed genuinely interested and mentioned a timeline, or if you think the listing is a strong fit, you can reach out to their agent directly. Agent-to-agent communication is professional and expected. "Your buyer stopped by on Saturday and spent about 20 minutes — seemed to like the yard. Happy to answer any questions for you or schedule a private showing" is a legitimate outreach.
Use your notes as a seller record. Your sign-in data, including the note that this visitor was represented, feeds the seller report you give at the end of the weekend. Sellers want to know who came through. That a buyer with representation toured the property is not a bad signal — it often means the listing is reaching serious buyers at the right price point.
Keep represented buyers in your property-specific loop. If the price drops or there is a new offer deadline, notifying everyone who toured — including represented buyers, through or alongside their agent — is appropriate and professional.
How your sign-in app handles this quietly
The value of a good digital sign-in is not just speed. It is the structure it gives to a moment that can otherwise get awkward. When a visitor walks up to an iPad kiosk, completes the form in under thirty seconds, and hands it back — the social pressure of the doorway interaction is off. You can note representation status in a follow-up field without it feeling like an interrogation. The visitor has already given you their name and phone. The "working with an agent?" field is just one more tap.
Private lead capture matters in this specific scenario too. If a represented buyer signs in on a form that looks like a marketing tool — lender ads, mortgage rate prompts, branding from a third party — they are going to wonder who is getting their information. That hesitation increases when they know they are represented, because now they are thinking about their agent, about data, about who is watching. A clean, private form that says "this goes to the listing agent and nowhere else" removes that friction. Visitors sign in. You get your record. Nobody feels ambushed.
The full lead capture flow covers how to handle the whole spectrum of visitor types at an open house, including what to do with represented buyers in the context of your export and follow-up workflow. The sign-in is the beginning of that chain, not the end.
Scripts for the situations that catch agents off guard
Here are word-for-word scripts for the scenarios that come up most often:
Scenario: Buyer announces their agent immediately
"Great — happy they told you about this one. Go ahead and sign in and take your time. I'm just here for any questions about the house itself."
Scenario: You ask "are you working with an agent?" and the answer is yes
"Perfect, they'll want to know you came through. Let me know if anything comes up about the property — I'm happy to answer questions, and your agent can always call me directly if they want details."
Scenario: Represented buyer asks you for offer advice
"That's really a question for your agent — they know your situation and can advise you on strategy. I represent the sellers here, so I want to make sure you're getting the right guidance from someone in your corner."
Scenario: Buyer seems unsure if they're "really" represented
"No worries — go ahead and sign in either way. If things are still taking shape on that front, your timeline and situation are what matter, and we can figure out the rest."
Scenario: Buyer asks if they need to tell you who their agent is
"Only if you want to. The sign-in is mainly for the seller's records — name and contact info is what we need. Everything else is optional."
That last scenario matters more than it sounds. Some represented buyers are protective of their agent's identity because they worry you will call them or try to interfere. Reassuring them that disclosure of their agent's name is optional (assuming it is — check your local rules) defuses that concern without requiring you to pry.
The bigger picture: represented buyers are not a problem
It is easy to treat represented buyers as a category of visitor who costs you time and generates no leads. That framing is too narrow. A few things to keep in mind:
Representation status changes. Buyers who are represented today may not be six months from now — relationships fall apart, agreements expire, people move markets. The agent they mentioned at your door may be someone they met once who they would not recognize in a lineup. Your professional behavior today is what they will remember if their situation changes.
Word-of-mouth runs through agents too. The represented buyer who had a great experience at your open house tells their agent, who is also someone who may refer clients to you, recommend your listing to their buyers, or call you for cooperation on a transaction. How you handle someone who is "not your lead" today affects how you are perceived in your market over time.
Sellers notice. If a seller hears that you made their represented visitors feel unwelcome or processed them through an uncomfortable interrogation, that is a conversation that does not help your listing presentation next spring.
Open houses are public. The etiquette of running one well — treating every visitor professionally, regardless of their agency status — reflects on you, your seller, and your brokerage. Roundups like The Close's open house app guide evaluate the tools, and Highnote's best open house apps list covers the workflow options — but the tool only matters as much as the professional using it. The sign-in records who was there. The conversation determines how they feel when they leave.
Review resources like Showable's sign-in app comparison can help you evaluate the digital tools, but the etiquette and legal framework sits with you and your broker.
Frequently asked questions
Should I still ask a buyer who has an agent to sign in at my open house?
Yes. The sign-in is for the seller's record and for your own protection — it documents who toured the property and when. A represented buyer's sign-in entry is just as legitimate as any other visitor's. Don't skip or shorten the form because they mention an agent.
Can I give a represented buyer my card at an open house?
You can hand over a business card so they have your contact info about this specific property. What you should avoid is actively soliciting their business or trying to replace their agent relationship. Stick to property questions; leave the business conversation for buyers without representation.
What is procuring cause and why does it matter at open houses?
Procuring cause is the industry principle used to determine which agent earns the buyer's commission when a dispute arises. An open house visit on its own rarely establishes procuring cause — it's the uninterrupted chain of events leading to the sale that counts. Consult your broker for how it applies in your specific situation.
Do I have to give a buyer agency disclosure to a visitor who already has an agent?
Disclosure requirements vary by state and brokerage. Many states require you to disclose your role as the listing agent (or a non-agent host) to every visitor regardless of their representation status. Check with your broker before your open house, not after.
How do I note on a sign-in form that a buyer is represented?
Add an optional "Working with an agent?" field — Yes / No / Not yet — to your digital sign-in form. Mark the answer in the visitor's record immediately after the conversation so you have an audit trail. Don't rely on memory; write it down while they're still in the house.
What should I say if a represented buyer starts asking me for advice on making an offer?
Be honest: "I represent the seller, so I'm not the right person to advise you on that — your agent can walk you through the offer strategy." That sentence protects you, respects their agent relationship, and still leaves them with a good impression of you.