What Phone Number Should I Give My Apartment Building?

When you move into a new apartment, your building manager asks for a phone number for the intercom. Here's what most people get wrong — and a smarter option.

When you move into a new apartment, one of the first things your building manager asks for is a phone number. This number goes into the intercom system — so when a visitor, delivery person, or guest presses your unit number at the front door, it rings you.

Most people give their personal cell number without thinking about it. That works, technically. But it creates a few problems you'll notice once you're settled in.

The problem with giving your cell number

Your cell number is your real contact — the number you use for work calls, family, friends, appointments. When you give it to the building, every intercom call goes directly to it. That means:

• A UPS driver buzzes at 8 AM while you're asleep. Your phone rings.
• You're in a meeting. DoorDash calls. Your phone rings. You can't answer.
• You miss the call by 10 seconds. The driver marks it "delivery attempted" and leaves.
• You have no record of who called, when, or why.

None of this is catastrophic. But it's friction you deal with constantly, and it adds up.

The smarter option: a dedicated intercom number

A better approach is to give the building a dedicated number — one that's specifically set up to handle intercom calls intelligently, rather than just ringing your phone. This is what BuzzBot provides.

BuzzBot provisions a local phone number in your city's area code (212 for NYC, 415 for SF, 312 for Chicago, etc.). You give that number to your building instead of your cell. When the intercom calls, BuzzBot answers automatically and runs through a verification flow:

• If the caller is an expected carrier (UPS, FedEx, Amazon, etc.) and BuzzBot finds a matching delivery confirmation in your Gmail, it buzzes the door open automatically.
• If the caller gives a name that matches your household, it buzzes them in.
• If BuzzBot isn't sure, it sends a push notification to your iPhone with Buzz In and Deny buttons — you can respond from the lock screen.
• If nothing resolves in 28 seconds, the call forwards to your real phone.

Does my building care what number I give?

Buildings don't verify that a number is a real cell or belongs to a specific person. They just need a working phone number in their system. A local area code looks and functions like any other number — your building will never know the difference.

Most buildings accept number changes via email or a resident portal within 1–2 business days.

What if I don't have Gmail?

BuzzBot's Gmail integration is what enables automatic delivery detection — without it, the delivery matching feature doesn't work. However, BuzzBot still handles all other intercom scenarios: voice verification for unknown visitors, lock screen approval notifications, and fallback forwarding to your real phone.