How long does a buzzer directory change usually take?

The edit itself takes minutes once the right person is at the panel or its management software. The real timeline is the building's process: an on-site manager with the master code can often do it same-day, while a request routed through the panel's service vendor typically lands within days.

Can I put any number in the directory, like a landline or a relative's phone?

Generally yes, the panel just dials whatever number is programmed. That is also the risk: whoever owns that number becomes the doorman. Choosing a number you control that can ring several phones, or an app, keeps the door from depending on one person.

The buzzer dials a previous tenant. Is that urgent?

Treat it as urgent. A stranger is receiving your building's entry calls and can open your door with a keypress. Ask the building to update the entry immediately and mention it is dialing someone who no longer lives there; that framing usually gets it prioritized.

Blog / How to Change the Phone Number Your Apartment Buzzer Dials

How to Change the Phone Number Your Apartment Buzzer Dials

By Ty · 2026-07-06

Your buzzer is dialing the wrong phone. Maybe it still calls the previous tenant, maybe it rings a number you retired two phones ago, or maybe it dials your partner who works nights. Whatever the case, visitors are stuck at the door and you cannot fix it from your side of the lobby, because the number lives inside the entry panel’s directory, not in your phone.

Here is exactly how that change happens and what to ask for.

How to fix it

The steps are the same in almost every building with a telephone-entry panel:

Confirm what the panel dials today. Have someone select your unit at the entrance and see which phone rings. That tells you what you are correcting.
Find who administers the directory. It is either an on-site manager with the panel’s master code or the access-control vendor whose sticker is on the panel. Your property manager knows which.
Request the change in writing. One line does it: “Please update the entry for unit X to dial .” Buildings process this routinely; it is the same edit as a new tenant’s move-in.
Choose the number deliberately. This is the step people waste. If you give a single personal cell, you have recreated the original problem: one phone, one person, every delivery. A number that rings multiple phones, or an app-backed virtual number, means the change you are already requesting fixes the door for good.
Test it. Dial your unit from the panel, confirm the right phones ring, and confirm a keypress opens the door.

If the panel does not place phone calls at all, no directory number exists to change; the two-question compatibility checker sorts that out quickly.

Where Lowkey helps

Since the building is editing your directory entry anyway, give them a number that upgrades the door. Lowkey provides a dedicated virtual number for your unit; buzzer calls ring the app on every phone you add, and from there you get automatic buzz-in for deliveries, 4-digit guest passcodes, scheduled access that expires on its own, and a history of every entry. It works with any buzzer that dials out to a phone number, which covers most apartment and condo systems, and the building does the same one edit it was going to do regardless.