Long Island
Douglas Security System (DSS) serves Long Island as well as the five boroughs. We install and repair intercom and security systems for many kinds of properties. For example, these range from single-family homes and garden apartment complexes to co-ops, offices, and storefronts. We also bring over 35 years of experience in the New York area.
Maybe you’re replacing an old buzzer, adding video and phone access, or securing a building entrance. Either way, we’ll inspect your property and then give you a free quote. Call (212) 262-2820 to get started.

Many Long Island properties have gates, long driveways, or separate buildings. That changes how an intercom should be designed:
We plan the layout on-site. Then we give you a clear quote before any work starts.
See all of our services.

For homes, a video door station like the Aiphone JP-DV is a simple, reliable setup. It also comes with an indoor monitor and app access. For garden complexes and co-ops, the Comelit Ultra Touch gives residents touch screen entry and phone access. In addition, our Comelit systems are no monthly fee systems. For offices and commercial buildings, we pair the intercom with a keypad like the Aiphone AC-10S keypad. We add security cameras at the entrance too. Buildings that want cloud management can instead use the DNAKE S617.

Prices depend on the building, the number of apartments and entrances, and the condition of the wiring. Most single repairs cost about $250 to $600. For example, these include replacing one apartment unit or fixing a door release. A video intercom for a small building with one entrance typically costs about $4,000 to $5,000 or more. These are average New York prices, but not a fixed price list. For more detail, see our intercom cost guide. You can also ask about our no monthly fee systems.
New York City’s intercom rules come from the state Multiple Dwelling Law, which applies to New York City. On Long Island, however, the rules for multi-family buildings depend on the local town or village. They depend on state codes too, so your building’s rules may be different. If you manage buildings in the city too, see our guide to NYC intercom requirements.
We work with properties across Long Island. Communities we serve include:
For properties farther east in Suffolk County, call us first to confirm scheduling. That way, we’ll tell you right away if your address is in our service area.
We also serve Brooklyn, Manhattan, Queens, the Bronx, and Staten Island.
Yes. We install and repair intercoms for homes, apartment buildings, co-ops, offices, and storefronts across Long Island. The work matches what we do in the five boroughs: video and audio intercoms, door buzzer repair, electric strikes, and access control. Long Island properties are often houses and small buildings, so single-door systems are common there. Our office is in Brooklyn at 1541 E 46th Street.
We serve Nassau and Suffolk County communities, including Hempstead, Garden City, Valley Stream, Freeport, Long Beach, Great Neck, Hicksville, Huntington, and more. Call to confirm your address. In Suffolk we cover parts of the county rather than all of it, so the exact address matters. Tell us the town or village, because local codes differ from one municipality to the next and can affect permits.
Yes. We install gate call boxes with remote door or gate release, designed for the distance between the gate and the house. Distance drives the design: a long driveway needs suitable cable or a wireless link, and power at the gate has to be planned too. A gate box sits outside all year, so it needs a weatherproof housing. The release can then open a gate operator or a door at the house.
Not directly. The Multiple Dwelling Law’s intercom rules apply to New York City. On Long Island, requirements depend on the local town or village and on state codes. A Nassau or Suffolk landlord should check with the building department of the town or village where the property sits, since the rules can differ from one municipality to the next. Even where a code does not require one, many owners install an intercom for tenant security.
Yes. We install video intercoms tied to keypads, card readers, and cameras so offices can screen visitors before opening the door. A typical setup puts a video station at the entrance, a reader or keypad for staff, and a camera covering the approach. Staff can enter with a card or code, while visitors press the call button and wait to be seen. That keeps a reception area from being interrupted by every knock.
Yes, we serve many Suffolk County communities as well as Nassau County. Call us with your address and we’ll confirm scheduling. Suffolk is a large county, so coverage depends on where the property is, and confirming the address first tells you quickly whether we can take the job. If the address is in range, the next step is an inspection followed by a written quote at no charge.
Yes. With an app-enabled system, you can see visitors at the gate, talk to them, and open the gate from your phone. This works over the internet, so the gate station needs a working connection, and your phone can answer on cellular data from away from home. It also helps with deliveries: you can let a courier in without walking down the driveway.
It depends on the number of doors, monitors, and whether you need a gate station. A simple video door station with one indoor monitor costs much less than a gate system with several monitors. We quote each home after a free inspection. Gate jobs add cable or power runs across the property and a weatherproof station, while a house front door often reuses existing wire. Average New York prices for a video door station at a house are $700 to $1,600, not a fixed price.
Most single repairs cost about $250 to $600, and a video intercom for a small building with one entrance typically costs about $4,000 to $5,000 or more. Both figures are average New York prices, not fixed quotes. We give you a free quote after an inspection. A repair fixes one unit or door release, while a new system covers the panel, apartment stations, power, and wiring. A panel or power supply replacement falls between, averaging $500 to $1,500.
In many buildings, yes. Our Comelit video intercom is built to sit alongside the intercom units already in the apartments, so you can add video and phone access without rewiring the entire building. Older Long Island houses and garden complexes often have usable low-voltage cable between the entrance and each unit. Video travels differently from plain audio, so we test the existing runs first. A damaged section gets replaced on its own.
No, not with our Comelit systems. They are a one-time investment with no monthly payment. Property management software and call-log servers are optional and sold separately. That split matters on Long Island, where a small association may only need the intercom itself. The panel and apartment units sit in your building and keep working without a subscription, so a recurring charge only appears if you choose optional software such as call logging for a property manager.
On Comelit video intercom installs, we offer a 3-year guarantee on Comelit material and a 1-year guarantee on service and labor. Material means the Comelit equipment itself, such as the entrance panel and apartment units. Labor covers how it was installed and connected, including our wiring work. The two terms run separately, so a defective part and a loose connection fall under different periods. Keep your quote and invoice, since they record what was installed.
Call (212) 262-2820 or use the form on this page. Tell us about the property and what isn’t working, and we’ll schedule an inspection. Inspection comes first because Long Island intercom trouble ranges from a dead handset to aging cable in a garden complex, and the price depends on which it is. After we see the equipment, you receive a free written quote for your building. Work begins only after you sign off on that price.