The Rules Nobody Sends You
When you receive a showing confirmation and the lockbox code, you're being given temporary access to someone else's home. The listing agent has extended professional trust. The seller has agreed to let strangers into their space.
Most buyer's agents handle this well. But the gaps — the things that seem small in the moment and create real friction — almost always come down to the same few patterns. This is the etiquette that experienced listing agents wish they could just email to everyone, but generally don't.
Keep the Code to Yourself
This is the most important one and the most frequently violated.
When the listing agent gives you the code, they're giving it to you — a licensed professional with a confirmed showing appointment. They're not giving you permission to share it.
What this looks like in practice:
If your buyers want to see the property again outside of a scheduled showing, book another showing. If someone else is covering the showing, they need to get access through proper channels.
This isn't bureaucratic. It's about maintaining the security of a property that someone lives in or recently lived in. When codes spread, the listing agent loses control of who's in the property. That's their problem to answer for, not yours.
Return the Key to the Box
This one sounds too basic to mention. And yet.
The standard workflow: you open the lockbox, remove the key, unlock the door, conduct the showing, lock the door, and return the key to the lockbox. That last step needs to happen every time.
What can go wrong:
If you realize you have the key after leaving, call the listing agent immediately. Do not wait. Do not send a text and hope they see it. The property is now unsecured, the listing agent doesn't know it, and the seller may be the one who discovers it.
If you leave a showing and aren't sure you returned the key, check before you leave the property. It takes three seconds.
Leave the Property as You Found It
This applies to:
The seller's home is prepared a specific way for showings. Lights left on after a showing run up the seller's electricity. A door left unlocked is a security issue. A thermostat changed from 18°C to 22°C on a vacant property is a heating bill the seller didn't expect.
None of this is about being precious. It's about respecting that this is someone else's property and it costs them when agents are careless.
Don't Let Your Buyers Enter the Code
This is more nuanced than it sounds.
The lockbox code was given to you as a licensed agent. Your buyer is not a licensed agent and does not have access rights to the lockbox — they have access rights to the showing, which is conducted by you.
In practice, many agents hand their phone to their buyer to dial in the code, or read it out while the buyer does it. This creates a situation where the buyer now knows the code, which means they could return independently.
The risk here is low for most buyers. But it's a risk that's entirely avoidable. Enter the code yourself.
If the Code Doesn't Work
Before you call the listing agent, try:
If you've genuinely tried and the box isn't working, call the listing agent. Be specific: "I'm at 45 Oak Street, I've entered the code three times, the box isn't opening." This is much more useful than "the lockbox doesn't work" and gets you to a solution faster.
Do not force the shackle. Do not try to pry the box. If it's not opening, it's either the wrong code, an ice problem (in winter), or a mechanical issue — none of which are solved by more force.
Be On Time (Or Communicate)
This sounds like a general professional expectation, but it specifically affects lockbox use.
If a showing window is 2-4 PM and you don't arrive until 4:15 PM, the listing agent may have already closed out access. On electronic lockboxes, this is automatic — your window has passed. On combination lockboxes, the code still works, but you're now showing a property outside the scheduled window that the seller agreed to.
If you're running late, a quick text to the listing agent is sufficient and professional. "Running 20 minutes behind — is the 2 PM window still workable?" keeps everyone informed and avoids the awkward follow-up.
After the Showing
Two things matter here:
Lock up properly. This means testing the door to confirm it's actually locked (not just closed), and confirming the key is back in the lockbox before you leave the property. Thirty extra seconds.
Provide feedback if asked. Listing agents often send automated showing feedback requests. If you received access and had a showing, completing the feedback takes two minutes and is a basic professional courtesy. If the property was fine but the price is wrong, say that. If your buyers are seriously interested, say that. The listing agent is trying to do their job, and honest feedback helps them.
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None of this is complicated. Most of it is just a more explicit version of what you'd want if you were the listing agent on the other side. The agents who have a reputation for being good to work with — the ones whose calls get answered quickly, whose offers get considered carefully — are often the ones who've internalized that reputation is built in the small moments, not just the big ones.
Returning the key to the box is a small moment. So is keeping the code to yourself. Together, they add up.
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