Apartment Building Intercoms

Intercom Systems Built for
Multi-Unit Residential Buildings

Multi-tenant lobby panels, video door stations, and smartphone-answering systems for NYC apartment buildings — from 4-unit walk-ups to 50-unit elevator buildings. Tenants answer from their phones, visitors see a camera, and the door release actually works.

Licensed & Insured Multi-Tenant Ready Existing Wiring Reused Where Possible
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Residential Properties

Intercom by Property Type

Single-Family Homes Apartment Buildings Co-ops & Condos Brownstones Townhouses
What We Install

Everything a Multi-Unit Building Needs

A complete intercom system for an apartment building means more than a lobby panel — it means every tenant can receive calls, every visitor sees a camera, and the door actually unlocks.

Lobby Directory Panel

Panel mounted in the vestibule or lobby with a button or touchscreen for each unit. Visitors select the tenant, the call rings in the unit — on a handset, wall monitor, or smartphone app.

Video Door Station

Camera at the front door so tenants see who's there before answering. Weatherproofed for NYC outdoor installation. Wide-angle lens to cover the full entry area.

Electric Strike or Mag-Lock

The door releases when the tenant presses the button. We wire the door hardware properly so it functions every time — not just sometimes. Fail-safe mode configured per NYC fire code.

Smartphone App Answering

Tenants answer visitor calls from their iPhone or Android. Works when they're home, in the elevator, or anywhere with a data connection. No dedicated handset required.

In-Unit Handsets or Monitors

For tenants who prefer a wall-mounted device, we install wired handsets or video monitors in each unit. Both options can coexist — some tenants use the app, others use the monitor.

Existing Wiring Assessment

Many NYC apartment buildings have original intercom wiring. We test the existing cable before pulling new wire — reusing what's there saves time and cost without compromising reliability.

Why It Matters

What a Functional Apartment Intercom Actually Provides

A working intercom is a baseline expectation for NYC rental buildings — but many buildings have systems that are years overdue for replacement.

Problems With Old Systems

  • Buzzer rings but door release doesn't fire — visitors stuck outside
  • Corroded wiring causes static, dropped calls, or dead units
  • No video — tenants buzz in visitors they can't see
  • No smartphone answering — tenants miss calls when not near the handset

What a Modern System Delivers

  • Reliable door release every time the button is pressed
  • Video so tenants see who's at the door before buzzing in
  • Smartphone answering so calls aren't missed
  • New wiring or reused existing runs — assessed honestly upfront
FAQ

Apartment Building Intercom Questions

We stage the installation so the building is never without a functioning entry system. The new panel is pre-wired and tested before the old one comes down — the cut-over itself takes under an hour. We typically schedule the final switchover during a low-traffic time (mid-morning on a weekday, for example) and notify tenants in advance. During installation of new wiring or door hardware, the existing system remains operational. We don't leave a building without an entry system at any point during the project.
Each unit is configured independently. When a visitor presses the button for Unit 3B, the call rings only on the phones registered to that unit. Tenant A can't accidentally answer a call for Tenant B. Each tenant sets up their own device in the app — the system admin (building owner or super) manages the directory from a separate admin account. If a tenant moves out, the building owner removes their account and adds the new tenant. No cross-unit visibility at any point.
It depends on the wire gauge and condition. Standard 4-wire 22AWG or 18AWG cable can support audio and simple video intercom systems — we test conductivity and check for shorts before committing to reuse. Aiphone's JO and JB series, which are popular for NYC apartment buildings, work well on existing 4-wire infrastructure. For IP-based systems with smartphone answering and HD video, we typically need to run Cat5e or Cat6 — but we pull that through the existing conduit where it's present, minimizing disruption. We'll tell you honestly during the site visit what's reusable and what needs new cable.
Yes, and this is the best setup for most multi-unit buildings. Tenants enter with their key fob — no intercom call needed. Visitors use the intercom to call a tenant and get buzzed in. Both systems share the same electric strike or door release hardware, wired from separate controllers. This eliminates the problem of tenants buzzing themselves in (which is a security gap) and keeps the intercom exclusively for visitor entry. We install and coordinate both systems together, handled as a single project, so the integration is clean.
It depends on the system. For IP-based intercoms that route calls through the internet to smartphones, an internet outage means smartphone answering is unavailable — but the system can be configured to also have local SIP extensions (in-unit handsets or monitors on the local network) that continue to work. For wired audio systems with in-unit handsets, internet is not involved at all — these continue working through power outages as long as the panel has battery backup. We specify fail modes for every building during the design phase. For buildings where downtime is not acceptable, we can configure local fallback paths so the system remains functional even without internet.
Related Services

Often Installed Together

Security Cameras

Lobby, hallway, and exterior camera systems to complement your intercom. Wired PoE, no monthly fees.

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Access Control

Key fob entry for tenants — integrated with the same door hardware as the intercom. Credentials revoked instantly when tenants move out.

Learn more →

All Intercom Services

View our full intercom installation offerings — residential, commercial, and all property types.

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Explore More

Residential or Commercial?

We have dedicated guides for each vertical — with the specifics that actually apply to your property type.

Residential Intercom Systems

Homes, brownstones, apartments, and co-ops. Video door stations, smartphone answering, and electric strike door release.

View residential intercom installation →

Commercial Intercom Systems

Offices, medical practices, retail, and multi-tenant commercial buildings. IP-based systems with visitor logs and access control integration.

View commercial intercom installation →
Get Started

Ready to Upgrade Your Building's Intercom?

We'll assess the existing wiring, walk through the entry points, and give you a clear scope and price. Most apartment building installs are completed in one to two days without disrupting tenants.

Get a Free Quote 212-347-5400