How to Give Airbnb Guests Access to Your Condo Building

If you Airbnb a unit in a building with a callbox, you have a problem no one talks about: getting guests through the front door.

A smart lock only opens the apartment. The callbox is a separate system. It dials your phone, and you press a button to let them in. That's not self-check-in. That's a leash.

So hosts end up with one of two workarounds. Neither is good.

Option 1: A smart lock plus "just call me"

You send guests a door code for the apartment, but guests still have to call you to get through the building entrance. You're still on call for every check-in. It doesn't matter if the unit has a Schlage Encode or an August Smart Lock -- neither one touches the callbox. You'll hear from guests the moment they press the button outside and expect someone to answer.

Option 2: Physical keys

Since you need to give building access somehow, you hand over keys. A key to the building and a key to the apartment, because you're already doing keys.

Now you have two problems. First, an outdoor lockbox, which is a key to your building sitting in a visible spot on the outside of your building for every guest, every listing, every month you operate. Second, in-person handoffs, which always sound manageable until a flight is late, a schedule shifts, or someone just doesn't show. The handoff breaks down, the guest is stuck outside, and the review reflects it.

There's also no expiry on a physical key. A key handed to a guest in January can still open your building in March. You have no way to know if it was copied.

Why smart locks don't solve the callbox problem

This is worth being specific about, because a lot of hosts spend money on a smart lock and feel surprised when the callbox issue is still there.

A smart lock replaces the deadbolt on your unit door. The callbox is mounted on the outside of the building, at the main entrance, managed by the building -- not by you. When a guest arrives, they see the callbox panel, press the button for your unit, and the system dials a phone number. That number belongs to whoever programmed the callbox. In most short-term rental situations, it's the host's cell phone.

So when you're asleep and a guest arrives at midnight, the callbox calls your phone. The smart lock on the apartment door is completely uninvolved. The guest is outside because the building entrance is a separate system that no smart lock controls.

The callbox and the smart lock solve different problems. You need both -- or you need something that handles the callbox side.

The actual fix

Point the callbox at a number that an automated system answers instead of yours. The system greets the guest, asks for a code, and opens the door if it matches an active reservation. No call to you. No lockbox. No key.

Connect it to your iCal feed and it generates a unique code per booking automatically. Active at check-in, expired at checkout, cancelled when the reservation is.

Chimekey does exactly this. Setup takes about ten minutes: swap the number your callbox dials, paste your iCal URL, and you're done.

What the setup actually looks like

1. Update the dial-out number. Your building manager can change the phone number your callbox dials through the panel settings -- from your number to Chimekey's. This is usually a quick request to the building office or property management company. You don't need access to the callbox hardware yourself.

2. Connect your booking calendar. Paste your Airbnb iCal URL into Chimekey. The system reads every reservation -- check-in time, checkout time, and whether a booking was cancelled or modified.

3. Codes generate automatically. For each reservation, Chimekey assigns a unique 4-digit code. It activates at the exact check-in time in your reservation and expires at checkout. If a guest books same-day, the code is ready immediately.

4. Guest arrives, enters the code. The guest presses the callbox button, Chimekey answers, prompts for the code, and opens the door. The exchange takes about ten seconds. You get a notification that they checked in. You don't pick up your phone.

What the guest experience looks like

Guests get their access code the same way you'd send any check-in instruction -- via Airbnb's messaging system, a welcome email, or your PMS messaging sequence. The code is usually 4 digits and looks identical to a smart lock PIN.

When they arrive at the building, they press the callbox button for your unit. A voice prompt asks for their code. They enter it. The door opens.

That's it. No waiting, no calling, no trying to reach you because the flight landed late. Guests who've used the system consistently describe check-in as one of the easiest they've had.

What happens at checkout

When a reservation ends, the code expires automatically at checkout time. The guest cannot re-enter the building using the same code the next day or week. There's nothing to revoke manually.

If a reservation is cancelled, the code is deactivated immediately when the cancellation comes through in the iCal sync. A guest who cancels 20 minutes after booking does not retain a working code.

This is the gap that physical keys and manual code management both leave open. Manual processes depend on someone remembering to act. Automated expiry just happens.

Frequently asked questions

Will this work with my callbox? Chimekey works with any callbox that dials a standard phone number when a visitor presses the button -- which covers the vast majority of phone-line entry systems, including DoorKing, Linear, Mircom, Aiphone, Viking, Fermax, and Comelit. If you're not sure about your specific model, ask about compatibility before signing up.

Do I need to install anything? No hardware installation required. The only change is updating the phone number your callbox dials. Most hosts do this through a request to building management.

What if my building manager won't change the dial-out number? Some buildings will forward your existing line to Chimekey's number rather than changing the dial-out setting directly. Call forwarding through your carrier works the same way. There's usually a path forward regardless of how cooperative the building is.

What happens if a guest enters the wrong code? After a set number of wrong attempts, access is blocked and you get an alert. You can see the failed attempts in the access log and reach out to the guest if needed.

Does Chimekey replace my building's intercom? No. The intercom hardware stays exactly as is. Chimekey is software that answers the call the callbox makes -- it doesn't touch the physical system at all.