Door Buzzer
Installation in
Carroll Gardens

Quick answer: door buzzer installation in Carroll Gardens costs $400 to $900 installed on our Brooklyn list for an audio buzzer with talk-back on a single-family brownstone or a two- or three-household house, $700 to $1,800 for a video door station with indoor monitors or phone answering, and from about $2,500 to past $10,000 for a multi-unit building such as an eight-unit co-op or a newer boutique condo. Each price covers the door station, the answering stations, the power supply, the strike or electrified lock on the door, the cable and the labor, and it is set in writing after a walkthrough and before anything is ordered. Carroll Gardens is billed at the Brooklyn rate. Most houses here land in the first two ranges. What pushes a job up is an original door that needs repair before any release can hold, a cable route that has to be made because the old bell wire is gone, video for every household rather than one, and, on a landmarked front, extra care to keep the panel and its wire inside what the Landmarks Commission's staff can approve. Send photos of the doorway and the old panel to (347) 934-8335 or on WhatsApp, and we reply with the range that fits, usually within two hours of your message during working hours.

• Looking at your photos and quoting a new buzzer costs nothing. If an existing system is dead and has to be diagnosed first, that is the $250 service call booked online, and the $250 is applied toward the work.
• All work falls under New York State license #12000287431. We install low-voltage entry equipment; if a power supply needs a new 120-volt circuit, a licensed electrician does that part, and we say so before the job is priced.
• On a building inside the historic district or an individual landmark, we plan the panel position, the fastening and the cable route to the Commission's published staff-level criteria and give you the photos and cut sheets an application uses.

Need Repair in Carroll Gardens? A Bell Board That Rings Every Floor, a Release That Hums but Won't Open, or a Station That Went Silent

Plenty of calls that begin with "we need a new intercom" end as a repair. In a Carroll Gardens brownstone the usual suspects are predictable. A bell that stopped ringing is often a broken splice behind the button, a corroded contact or a transformer that burned out years ago in a cellar corner nobody visits. A street door that buzzes but stays shut is usually a strike whose keeper no longer lines up with the latch because an old wood door has swollen, sagged on its hinges or been rehung after painting. One household that never rings in an otherwise working house is most often a single failed station or one broken pair in the cable. As Daniel Vasquez of Paragon Security and Locksmith told Brick Underground in its 2019 intercom repair guide, "It's all in the wire connections," and the guide notes that even old systems usually have core wiring that is fine.

Diagnosis is the $250 service call booked online, and the $250 goes toward the repair, or toward a new system if replacing turns out to be the better value. You get both numbers and a plain recommendation. On a district house, ordinary repair of existing equipment does not need a Landmarks permit, according to the Commission's guidebook, so a dead panel can usually be brought back to life while you decide whether to replace it. If a part has to be ordered, we make sure the door can still be locked and opened with a key before we leave. If your street door is stuck open or cannot be locked right now, say so when you call (347) 934-8335.

Door Buzzer Installation for Carroll Gardens' Architecture

Six kinds of building account for almost every door buzzer job we would quote in Carroll Gardens. Each one puts the door station, the cable route and the answering stations somewhere different, and each has a mistake that shows up again and again when the work is done in a hurry.

Single-family brownstones: one household, four floors to reach

The classic Carroll Gardens house is a three- or four-story rowhouse with a high stoop, a double or single wood door at the parlor floor, a vestibule with an inner door behind it, and a garden-floor door tucked under the stoop. One household lives across every floor, and the complaint is almost always the same: the bell rings in the front hall and nobody hears it on the top floor, in the back kitchen on the garden level or in a home office at the rear of the parlor floor.

The usual solution is a compact one-button station at the parlor door, answering stations on the parlor floor and the main bedroom floor, and a second chime or station on the garden floor where many families now cook and eat. Owners who want to see visitors choose a video station, with a monitor in the kitchen and phone answering for when they are out. The cable is the easy part in a single-family house, because the owner controls every floor and the cellar: it drops from the doorway into the vestibule, down to the cellar and up through closets or the chase beside the chimney breast. The release goes on the parlor door if the family wants to buzz guests in from upstairs; many single-family owners decide they do not, and simply want to see and talk to the visitor before walking down.

Brownstones divided into condos: one doorway, several owners

A large share of Carroll Gardens' small co-ops and condos are former single-family houses divided into two, three or four units. Brick Underground's 2023 guide lists one example on President Street overlooking Carroll Park, a turn-of-the-century brownstone newly converted into three condos. In buildings like that the street door, the vestibule and the stair are common property, and the units are owned by people who may not share anything else. The bell board has to give each unit its own button, ring only that unit, and let each owner release the door for their own visitors and nobody else's.

The technical part is a small multi-button station with a station or monitor in each unit and a power supply in the common cellar or a common closet, sized for every station on the system. The part that decides whether the system lasts is governance. Small condo associations often have no managing agent, no maintenance contract and no record of who installed what. Before we finish, the association gets the wiring note, the admin login, the test record and a plain list of the parts, so that the next repair can be ordered by whoever is acting as treasurer that year rather than by whichever owner happens to be home when the door stops working.

Small pre-war co-ops: eight apartments and a bell board from the conversion

The four- and five-story buildings on Court Street, Clinton Street, Luquer Street and the side streets were built from about 1900 to 1930, and many became co-ops decades later. Brick Underground's guide names three with exactly eight units: a 1910 co-op on Luquer Street, a 1920 limestone building on Clinton Street and a 1900 building on Court Street. These buildings usually have a lobby panel with a button per apartment, a riser to every floor and handsets that may date from the conversion. The riser is the valuable part. If its pairs test sound, a two-wire multi-tenant system can reuse them and nobody has to fish new cable through occupied apartments.

The legal picture matters more here than in a house. Habitat Magazine's 2024 article quotes attorney Nancy Kourland saying that, for a co-op with a broken intercom, "the co-op has a legal obligation to repair or replace the intercom," and notes that courts have treated a working intercom as an essential service. For a board, that turns a dead system from an inconvenience into a liability. The jobs that go well start with a pair-by-pair riser test, so the board knows before it votes what can be reused and what has to be replaced, and a check of the street door's closer and latch.

Two- and three-family houses: owner downstairs, tenants above

Many Carroll Gardens houses are still owner-occupied two- and three-family homes, with the owner on the garden and parlor floors and one or two rental apartments above. There is typically one street door into a shared hall and one bell that rings on every floor. The fix is a multi-button station with each button wired only to its own household, labeled by floor rather than by name, and a talk-back station, monitor or phone answering in each apartment. The owner holds the admin access, so when a tenant moves out their access is removed and the next tenant is added without a service call.

The detail particular to these houses is the garden-floor apartment. Where the owner lives above and rents the garden floor, the garden tenant often uses the door under the stoop and never touches the parlor door. That tenant's bell should be at their own door, not on the parlor-door panel where visitors climb the stoop, ring and wait for someone who will never come. We plan the door stations around which door each household actually uses.

Newer boutique condos: extending a system somebody else chose

The handful of newer buildings, such as the seven-story, 17-unit building at 14 President Street from 2018 and the four-story, 13-unit building at 480 Degraw Street from 2019, opened with entry systems specified by their developers. A building of six units on Huntington Street from 2000 is older than that, with equipment that may no longer be made. The work in buildings like these is rarely a first installation. It is adding a door the system skipped, replacing a panel after damage, adding an accessible apartment station, or moving a building off a subscription service the board no longer wants to pay for.

Mixed-use buildings on Court and Smith: never one panel for both

The Department of City Planning's study shows commercial overlays along Court Street and Smith Street, and the buildings there are mostly shops and restaurants at street level with apartments or offices above. The residential door usually sits between or beside two storefronts, and the shops have their own front doors and, often, rear or cellar doors for deliveries. Those are separate systems even when the cables share a cellar ceiling. The apartments get a small multi-button panel at their own door, wired up their own stair. The shop gets a buzzer or video station at its delivery or staff door, answered at the counter or on the owner's phone. Mixing them invites shoppers to ring tenants and tenants to buzz strangers into the shop's back hall.

One Intercom Panel per Door Opening: What the Landmarks Commission Allows at a Carroll Gardens Entrance

Most of what people believe about Landmarks and doorbells is rumor. The Commission has published its actual criteria in the health and safety chapter of its Permit Guidebook, and they are short enough to explain in full. They apply to buildings inside the Carroll Gardens Historic District and to individual landmarks such as the former Hans S. Christian Memorial Kindergarten at 236 President Street, built in 1897, and the 1853 building beside it at 238 President Street, which was converted into co-ops in 1984. Both were designated in September 2018. If your house is outside the district and is not individually designated, none of this is required, but the same guidance is a good description of how to put a door station on a 150-year-old doorway without spoiling it.

Staff can approve intercoms. The guidebook says the Commission's staff can issue permits for light fixtures and intercom panels that meet its criteria. That matters because a staff-level permit does not go to a public hearing. A door station designed to meet the criteria from the start is a routine application rather than a debate.

Where the panel may go. In the guidebook's words, "Light fixtures and intercom panels, as well as doorbells, must be installed within or adjacent to a door opening," and "An intercom can also be installed on a fence or wall in front of the entranceway." In a Carroll Gardens rowhouse that means the jamb or frame inside the parlor doorway, the plain masonry just beside it, or, where the house has an iron fence or a low wall at the front garden, that fence or wall. A panel halfway along the facade, on a window surround or on the face of the stoop does not fit.

How many. "A maximum of two light fixtures and one intercom panel can be installed per door opening." One door, one panel. A brownstone condo with three units does not get three doorbells side by side at the parlor door; it gets one three-button panel. Where the garden-floor apartment uses the door under the stoop, that is a separate door opening and can have its own panel.

What it looks like. "Design, size, and finish of installations must be compatible with the architecture of the building," and the guidebook adds that most equipment "must be as small as possible and painted to blend with surrounding building material, if possible." In practice that favors compact stations in dark bronze, black or a neutral finish, flush or nearly flush, with plain buttons. Large touchscreen panels designed for apartment lobbies are hard to justify on a district rowhouse door.

How it is fastened. This is the rule that most affects installation. Equipment must be attached to "mortar joints, plain masonry, wood, metalwork, or concrete paving at the areaway or sidewalk," and "must not be attached through cast iron or on any decorative surfaces." On a brownstone, that means anchors go into mortar joints or plain stone, not into carved brownstone, and never through the cast-iron railing or newel. On a wood frame, screws go into plain wood, not into molding.

How much wire shows. Conduit should be concealed through plain masonry or wall cladding. Where that is not possible, staff may approve "a maximum of approximately ten inches of visible conduit along a wall surface or architectural element," painted to match and secured into mortar joints. That ten inches is the practical limit we design to. It means the cable from a door station has to disappear into the wall, the frame or the vestibule almost immediately, which is why we plan the cable route before we promise a panel position.

What the application needs. The guidebook lists color photos of the entire building and close-ups of the proposed location, elevation drawings and large-scale details for visible facade installations, color specifications, manufacturer cut sheets for intercoms and a short written explanation. In-kind replacement of an existing intercom is exempt from the drawing requirement. And "ordinary maintenance, repair, and retrofitting of equipment do not require a permit," so a working system can be repaired without an application.

What the guidebook does not cover. It says nothing specific about card readers, keypads, electric locks or door stations beyond intercom panels and doorbells, and it directs owners to contact the Commission for guidance on items it does not address. If a co-op wants a keypad at a district doorway, the right move is to ask the Commission before ordering anything, and we prepare the photos and cut sheets for that conversation.

Door Buzzer Installation in Carroll Gardens: Questions Answered

Landmarked doorways

How many intercom panels will the Landmarks Commission allow at one entrance on a district house?

One per door opening. The Commission's Permit Guidebook says "a maximum of two light fixtures and one intercom panel can be installed per door opening." For a brownstone divided into three condos, that means one panel with three buttons at the parlor door, not three separate doorbells side by side. If the garden-floor unit has its own door under the stoop, that is a second door opening and can have a panel of its own.

That single panel has to sit within or adjacent to the door opening, or on a fence or wall in front of the entranceway, and its design, size and finish must be compatible with the building. We size the panel to the number of households, choose a compact station in a finish that blends with the door or stone, and plan its position so staff can approve it at the counter rather than sending it to a hearing.

How much of the cable between the door station and the cellar is allowed to show on a district house?

Very little. The guidebook asks for conduit to be concealed through plain masonry or wall cladding, and where that is impossible, staff may approve "a maximum of approximately ten inches of visible conduit along a wall surface or architectural element," painted to match the background and secured into mortar joints where possible.

On a brownstone that usually means the cable leaves the back of the station and goes straight through the jamb or the plain masonry beside the door into the vestibule, then down to the cellar inside. We look for an existing path first, such as the hole the old bell wire used, before drilling anything new. Where the panel goes on a front fence or wall, the cable runs underground or inside the post, not across the face of the stoop.

What goes into a Landmarks application for a new door station, and what can you prepare for it?

The guidebook lists color photos of the entire building and close-ups of the proposed location, elevation drawings and large-scale details of visible facade installations, color specifications or paint cards, manufacturer cut sheets for the intercom and a written explanation. In-kind replacement of an existing intercom is exempt from the drawing requirement.

From our walkthrough we can supply the close-up photos, the manufacturer cut sheet with real product photos, the finish, the exact mounting position and fastening points, and a description of the cable route and how much of it will show. Owners who file themselves, or whose architect or expediter files, use those pieces directly. The Commission decides; we make sure what is described already meets its published criteria.

The Commission's guidance covers intercoms but not keypads or card readers. Can our co-op add a keypad at the street door?

Possibly, but ask first. The guidebook's intercom criteria cover intercom panels and doorbells, and it says it does not address items such as card readers, keypads and electric locks, directing owners to contact the Commission for guidance. A keypad built into the intercom panel itself is easier to describe as one intercom panel than a separate keypad box beside the door.

If a board wants code entry on a district doorway, we price a combined station with a keypad and a separate keypad, prepare photos and cut sheets for both, and the board or its expediter asks the Commission which it will accept before anything is ordered. Off the district, the board's own preference decides.

Old doors and releases

Our parlor doors are the original wood. If we put a release on them, can it be taken out later without a scar?

Mostly, if it is planned that way. An electric strike needs a pocket in the frame, and that pocket stays. We keep it small by fitting the strike where the old mechanical keeper already sat and choosing the slimmest body that will hold the latch, so a future restorer finds a neat, patchable mortise rather than a hacked-out frame.

If you want the frame left alone entirely, the alternative is an electrified lock or lever in the door with a concealed power transfer at the hinge edge. The frame keeps its original keeper. It costs more than a strike, and the door gets a small channel at the hinge side that cannot be seen when the door is shut, but it is the more reversible choice for owners who expect to restore the original hardware later.

Our old wood doors swell and stick every humid summer. Will a buzzer release still let a visitor push them open?

Only if the door is fixed first. A strike releases the latch; it does not move the door. If the door is binding at the top or dragging at the sill, the visitor pushes against the door's own friction, and in the worst case the swollen door presses the latch so hard against the keeper that the strike cannot free it.

At the walkthrough we open and close the door, look at the gaps and check the hinges. If the door needs planing, rehanging or new hinge screws, that goes on the price as door work, before the strike goes in. Then we set the strike so the latch catches firmly in both the swollen summer door and the shrunken winter one, and adjust the closer so it pulls the door fully shut in either season.

Why do some door releases make a loud buzz and others only a quiet click?

It depends on how the strike is powered. Older systems and many basic strikes run on alternating current, which makes the solenoid vibrate audibly while the button is held, the sound that gave the buzzer its name. Strikes run on direct current, which most modern systems use, simply click open and stay silent. The buzz is useful in one way: the visitor hears that the door is released. With a silent strike, a small sounder or a light on the door station tells the visitor when to push.

If your old strike hums but the door will not open, the hum tells you power is reaching the strike, so the fault is usually mechanical: a keeper out of line with the latch, a door that has dropped, or a worn strike. A strike that is silent when the button is pressed points to the wiring or the power supply instead.

Someone can slip our street door's latch with a card. Will an electric strike make that easier or harder?

A strike does not change it by itself; the lock and the gap do. A latch can be slipped when there is a gap between the door edge and the frame and the lock has no working deadlatch, the small plunger beside the latch that stops it being pushed back when the door is closed. Old doors that have shrunk often have both problems.

When we fit a release, we check that the lock's deadlatch actually engages the strike, which depends on the strike's lip and position, and we look at whether a latch guard or a tighter keeper would close the gap. Getting the deadlatch to engage is part of a correct strike installation, not an extra, and we test it by trying to push the latch back with the door closed before we leave.

Condos, co-ops and new services

Our brownstone was divided into three condos and there is no managing agent. How do we keep the entry system from becoming nobody's job?

Name an owner of the system before it is installed. We ask the association to choose one contact who approves the quote, receives the hand-over package and holds the admin login, with a second owner as backup. That person can add and remove users, change codes and call for service without having to gather all the owners.

The hand-over package is what makes that work: a one-page wiring note showing where the power supply is, which pair goes to which unit and where the cable runs, the admin logins, the model numbers and a dated test record. File it with the association's papers. When an owner sells, the buyer gets their own access and the seller's is removed, and nobody has to remember how the system was put together.

A listing on our block advertised a "virtual doorman." What is that, and does it take the place of a buzzer?

"Virtual doorman" is a marketing term for services in which a remote attendant answers the building's door station, checks the visitor or courier over video and releases the door or a package room. Brick Underground's 2023 guide mentions one at a converted three-condo brownstone on President Street. It does not replace the door station, strike and closer; it sits on top of them, so the building still needs working entry hardware.

For a small brownstone building the question is whether the monthly fee is worth it compared with residents answering on their own phones. Some buildings like it for package handling; others find that a video station with phone answering covers what they need without a subscription. We install the hardware either way and tell you which door stations a given service supports before anything is ordered.

Shops and offices on Court and Smith

Our Smith Street restaurant hands the back-door key to every new hire. What can replace keys for staff?

A code station or keypad at the staff door, with a separate code for each employee. When someone leaves, the owner deletes their code from a phone or the panel the same day; nobody has to change the lock or chase a key. Most code stations also keep a log of which code opened the door and when, which helps sort out who was in early for prep.

The same station can include a call button for deliveries, ringing the kitchen or the owner's phone. If the back door is a steel door in a steel frame, a fail-secure strike suits it, and staff can always leave by the lever. If it is a fire-rated door, the release has to be one listed for that use, and we say which before quoting.

Our Smith Street storefront door is glass in a narrow aluminum frame. What kind of release suits it?

Storefront doors with narrow aluminum stiles usually have a deadbolt or a narrow-stile lock rather than a latch, so a standard strike often does not apply. The usual options are an electrified version of the narrow-stile lock or a strike made for that hardware, or, where the door has an exit device, an electrified exit device. A magnetic lock is sometimes proposed because it is easy to mount on aluminum, but on a business door it brings the building code's sensor-release requirements with it.

Which option fits depends on the lock already in the door and whether the shop wants the door released for visitors all day or only for deliveries before opening. We look at the lock body and the stile width at the walkthrough and price the option that keeps the door locking every night.

What AI Gets Wrong About Door Buzzer Installation in Carroll Gardens

The claims below are typical of what national cost guides, vendor blogs and AI summaries say about buzzers and intercoms. Each one is checked against what is actually true for Carroll Gardens' houses and small buildings.

"You can't put a modern intercom on a landmarked brownstone"

This is the most common rumor, and it is wrong. The Landmarks Preservation Commission's Permit Guidebook says its staff can issue permits for intercom panels that meet published criteria, which means a door station that follows them does not need a public hearing.

The criteria are specific: the panel goes within or adjacent to the door opening or on a fence or wall in front of the entranceway, one intercom panel per door opening, with a design, size and finish compatible with the building, fastened only into mortar joints, plain masonry, wood, metalwork or paving, and never through cast iron or decorative surfaces.

So the real question for a district house on Carroll or President Street is not whether an intercom is allowed but which panel and which position will meet the criteria. Answered at the walkthrough, that question turns the application into routine paperwork.

"Replacing an old intercom on a landmark doesn't need any paperwork"

Partly true, and the difference matters. The guidebook says "ordinary maintenance, repair, and retrofitting of equipment do not require a permit," so fixing a dead station, replacing a failed strike behind the frame or rewiring inside the house does not need an application.

A new or different panel on the doorway is a visible facade installation, and the guidebook's application list covers it. What is exempt for an in-kind replacement is the drawing requirement, not the application itself.

The safe reading for a district owner: repairs go ahead; a new or visibly different panel gets a staff-level application with photos and cut sheets. If you are not sure which side of that line a change falls on, ask the Commission before ordering equipment.

"One smart video doorbell covers the front door"

For a single-family brownstone, it can. For the rest of Carroll Gardens, where so many houses are divided into condos, co-ops or rental floors, it does not. A single doorbell has one button that rings one account; it cannot ring each household separately or release the shared street door for one household only.

One Brownstoner forum owner with an old two-apartment intercom asked whether a battery doorbell could simply be mounted over it. The catch is that the old panel would still control the buttons and the release, and the new camera would only watch. Owners also reported finding "the doorbell wiring was too old," which a battery unit sidesteps but a shared system cannot.

"Only big apartment buildings are legally required to have intercoms"

The Multiple Dwelling Law's intercom rule does use a size threshold: Class A buildings with eight or more apartments, built or converted after January 1, 1968, and older buildings when a majority of tenants request one in writing. Several boutique co-ops in Carroll Gardens have exactly eight units, according to Brick Underground's 2023 guide.

The threshold is only half the story. Habitat Magazine's 2024 article notes that the city's housing code requires an installed intercom to be kept working and that courts have treated a working intercom as an essential service under the warranty of habitability.

So a small co-op that has an intercom cannot simply let it die because the building is under the threshold. For a board, a dead system is a liability as well as an annoyance.

"Old buzzer wiring always has to be ripped out"

Not in our experience, and not according to the technicians Brick Underground interviewed. Its 2019 repair guide quotes Daniel Vasquez saying "It's all in the wire connections" and notes that even outdated systems typically have core wiring that is fine.

In a Carroll Gardens rowhouse that matters, because new cable has to travel through original plaster, past moldings and up stairwells. A two-wire multi-tenant system can often run on an existing bell pair or co-op riser that tests sound.

Some old wire really is finished, cracked insulation, cut runs from past renovations, pairs that short to each other. The only way to know is to test every pair before quoting, which is what our walkthrough does, and the written price says which runs are reused and which are new.

"The average intercom installation is about $2,500"

HomeAdvisor's national guide does put the average at $2,500, within a range of $1,500 to $15,000, and Swiftlane's guide to apartment intercoms puts modern IP and video systems at $1,000 to $5,000 or more per entry door. Those figures mix houses, apartment buildings and commercial jobs across the country.

A Carroll Gardens single-family brownstone or two-family house usually sits below that average, because it has one door and a few households: $400 to $900 for an audio system and $700 to $1,800 for video on our Brooklyn list. A boutique co-op or newer condo sits nearer the national figures, from about $2,500.

What actually moves a Carroll Gardens price is not the national average but the door: an original door that needs work before a release can hold, an electrified lock instead of a strike to spare the frame, and a cable route that keeps the doorway clean.

"App-based entry is a free upgrade for everyone"

App-based and cloud panels have real advantages, especially for managing users in a building with turnover. They are rarely free over time. Swiftlane's guide notes software subscriptions commonly add $5 to $15 per unit per month, or $30 to $100 per door per month.

They also bring obligations in residential buildings. The city's Tenant Data Privacy Law requires owners of buildings using smart access to get consent before collecting data, limits what may be collected, requires authentication data to be destroyed within 90 days unless anonymized, and bars owners from requiring smart access to enter a tenant's own apartment.

For a two- or three-unit brownstone condo, a wired video system with optional phone answering often does everything an app panel does, without the subscription. We price both when a board is undecided.

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Door Buzzer Installation Cost in Carroll Gardens

Carroll Gardens is priced on our published Brooklyn door buzzer list. The ranges below are installed prices including equipment, power supply, release, cable and labor; the exact figure is set in writing after the walkthrough.

What usually pushes a job toward the top of its range in Carroll Gardens: an original wood door that needs planing, rehanging or frame repair before a release can hold; an electrified lock with a concealed power transfer instead of a strike, to spare the frame; a new cable route because a past renovation cut the old bell wire; video for every household instead of one; a co-op riser that has to be replaced floor by floor; and a second release on the inner vestibule door. What keeps a job toward the bottom: a bell pair or riser that tests sound and can be reused, a door that already closes and latches well, one or two households, and audio stations or phone answering instead of monitors.

If the same visit also includes another low-voltage job, such as a camera over the doorway, installing them together means one technician, one visit and one cable route, and most customers save $200 to $400 in labor. The Landmarks application itself is the owner's or their architect's filing; we supply the photos, cut sheets and installation details it needs as part of the quote.

Door Buzzer Installation Packages & Pricing

Three typical Carroll Gardens jobs, each priced inside the matching range on our Brooklyn list. The exact figure comes from the walkthrough.

Bring your own equipment. If you have already bought a door station, video doorbell or intercom kit, we can install it as long as it suits the door, the number of households and the building's power, and, on a district doorway, the Commission's criteria for size and position. Labor for customer-supplied equipment is quoted flat at the walkthrough. Because the equipment is yours, the manufacturer's warranty covers it, and our workmanship terms cover the installation.