These are the questions that come from Chelsea's own doors, grouped by building: landmarked rowhouses, lofts with freight landings and keyed elevators, the big complexes and the city's housing, gallery entrances on the West 20s, and buildings under repair. Renter and co-op rules for the whole city are on our New York City smart lock page, and doorman-building, tower-suite and short-stay questions are on the Manhattan borough page. Cost, scheduling and coverage are in the FAQ further down. None of this is legal advice.
Landmarked rowhouse doors
If drilling for a smart lock splits our original 1840s front door, can we simply order a new one?
Not simply, and that is why the drilling plan matters more on a landmarked Chelsea door than anywhere else. The Landmarks Preservation Commission's rules for windows and doors say that new doors may be approved if they match the original or historic ones in details, materials, operation, configuration and finish, and that historic doors may be replaced only if they are deteriorated beyond reasonable repair, as described in a condition assessment. A door you damaged last Tuesday is not “deteriorated beyond reasonable repair”; it is a repair job, and probably a specialist joiner's one.
So we design the installation around the door's weakest point. Old stiles may have been bored for three or four different locks over a century and a half, and the wood between those bores can be thin. We measure the existing bores and backset, look for old patches and shrinkage cracks, and choose a lock that reuses what is there: an interior retrofit that mounts over an existing single-cylinder deadbolt and leaves the outside untouched, or a smart deadbolt that fits the existing bore without enlarging it. If the only lock you like needs new holes in a fragile stile, we say so, and we show you the alternative.
If a door is already failing — split rails, loose joints, a stile that will not hold a screw — we stop and photograph it before anyone installs anything, so the condition is on record and the owner can decide with a restorer or architect what happens next.
Who files with the Landmarks Preservation Commission for a keypad — the owner, the architect or the installer?
The application belongs to the property owner, or to someone the owner authorises, such as an architect or expediter; a lock installer is not the applicant. LPC lists three kinds of permit — the Permit for Minor Work, the Certificate of No Effect and the Certificate of Appropriateness — and says that 95 percent of its approvals are issued by staff without a public hearing. Whether a particular keypad needs a permit at all depends on what changes on the exterior; the NoHo business improvement district's guidance, for example, notes that repairing or replacing hardware such as knobs, hinges and handles does not need LPC approval, while most other work on doors does.
What we do is make the owner's file easy. Before a landmark-district job we supply photographs of the door and entrance as it is, the manufacturer's specification sheet and finish options for the proposed lock, a marked-up photo showing exactly where anything would be visible, and a description of every hole: whether it reuses an existing bore or is new, and its size. That is the material staff ask to see.
Many owners avoid the question entirely by choosing an inside-only retrofit, which leaves the street face and the key exactly as they were. Others decide that a small keypad is worth an application. Either way, nothing is drilled on a landmarked facade until the owner has told us, in writing, which path they are on.
Our rowhouse used to be four apartments and is one home again — what should happen to the old apartment doors and their locks?
Reconverted rowhouses often keep the doors from their apartment years: a deadbolt on every landing, a peephole at each floor, keys that nobody can match to a door any more. The first job is to decide which of those doors still needs to lock. Usually it is the street door, perhaps the garden-level door under the stoop, and one or two interior doors — a home office, a room for a nanny or a lodger — and nothing else.
The rest can have their deadbolts removed and the holes filled, or the deadbolt kept but re-set to work as a simple privacy latch, so nobody is ever locked into or out of a room in their own house by a forgotten key. Where the house is sometimes let in parts, we can put smart locks on the doors that matter and plain passage hardware on the others, with all the codes in one app.
We also check that every door on the way out of the house opens from inside without a key. An old apartment door with a double-cylinder deadbolt, left over from the building's multi-family years, is the sort of thing that is easy to forget and dangerous in a fire.
Lofts, freight landings and keyed elevators
Our loft's elevator opens straight into the apartment on a key — where does a smart lock go?
Brick Underground's guide to these apartments explains that a key-locked elevator will not move without a key in the car's lock or a resident ringing the visitor up, and that the elevator's front door is locked and opens only by key or when someone provides access. In that arrangement the elevator itself is the front door, and the lock that governs it is the building's, not yours. The same guide notes that some lofts also have a separate entrance door between the elevator and the apartment, and that some buildings add steel gates outside the elevator.
If your loft has that second door, it is the natural place for a smart lock: it is yours, it is a normal door, and it gives you a log and personal codes for the people who reach the landing. If there is no second door, a smart lock usually goes on the stair or fire-exit door that also reaches the apartment — always with free exit from inside — and the building's video intercom handles visitors arriving by elevator.
What we do not do is fix anything to the elevator's doors, gate or car. That equipment is inspected and maintained by a licensed elevator company, and the building will want it left alone.
Can the key switch inside our loft elevator be swapped for a keypad or a phone?
It can be, in many buildings, but not by a lock installer. Brick Underground notes that in newer construction the elevator may be controlled by magnetic cards, keypads, codes or fingerprint readers instead of a physical key, so the technology exists. The obstacle is the law: the city's Administrative Code makes it unlawful to perform elevator work unless it is done by or under the direction of a licensed elevator agency director, and New York State requires anyone working on an elevator to hold an elevator mechanic licence.
The right route is through the building. The board or managing agent asks the elevator company that services the car what credential readers its controller can accept. If the building wants the reader to share credentials with apartment doors and the lobby, we can supply and configure the access platform and the reader on the landing side, while the elevator company makes the connection inside the car and controller.
Until then, the practical step is to treat elevator keys like apartment keys: know how many exist, collect them when people leave, and use the building's video intercom to let visitors up instead of handing out keys.
Big complexes and the city's housing
Half our block is a co-op and half is a rental under one roofline — whose rules decide what goes on my door?
The organisation you hold your apartment from decides, not the building you can see. London Terrace is the clearest example: the 14 joined buildings look like one complex from the street, but Wikipedia records that they are run on the inside as two organisations — London Terrace Towers, a co-op managed by Douglas Elliman, and London Terrace Gardens, a rental managed by Rose Associates — with many internal connections closed off.
If you own shares, your proprietary lease and the co-op's house rules govern the door, and the board's managing agent is the one to ask. If you rent, your lease and the state's Multiple Dwelling Law govern it, and the landlord's management company is the one to tell. The neighbour across the courtyard may be living under completely different rules on an identical door.
So the first line of any request we write in a split complex names which side of the line the apartment is on, which management company runs it, and which document — proprietary lease or lease — we are working from.
My old apartment key turned out to open a neighbour's door — will a smart deadbolt fix that?
It fixes your door, and it is a good reason to tell the landlord at once. Older walk-up and mid-century buildings sometimes have unit cylinders keyed alike, or master-keyed in ways that have drifted over the decades; New Yorkers on the r/AskNYC forum have described buildings where one key opens several units. Until the landlord re-keys, your existing lock should not be treated as private.
Adding a smart deadbolt gives your door a lock with its own keyway and its own codes. In a building of three or more apartments, the state's Multiple Dwelling Law lets a tenant install an additional lock of up to three inches in circumference, provided a duplicate key is given to the owner on request. We fit the new deadbolt, leave the landlord's lock in place, and give you the duplicate key to hand over.
The landlord's own cylinder still needs fixing for the neighbours' sake. We put what you found into a short written note you can send to management, so the building re-keys the affected units.
Our household is moving into one of the new Fulton or Elliott-Chelsea towers — is it worth fitting a smart lock before the move?
No; wait until you are in the new apartment and know its rules. The city's PACT page for the project says all 2,056 existing NYCHA apartments at Fulton and Elliott-Chelsea will be replaced with new, permanently affordable homes, and The City Reporter reported in September 2026 that NYCHA, working with Related Companies and Essence Development, plans to take down 18 buildings in three developments and replace them with six towers. The new buildings will come with their own doors, hardware and entry systems, chosen by the developers and the managing agent.
Whatever you add to a public housing door now belongs to a door that is due to come down, and NYCHA, not a contractor, decides what may be fitted to its doors. In the new towers the managing agent will set its own rules for unit doors, and those are the rules we would follow.
When you have moved and have the building's rules in hand, call us with them. If an additional lock is allowed, we will fit one that suits the new door and keep a copy of the paperwork on file.
Gallery doors on the West 20s
Hundreds of people come through on an opening night — should the gallery door be locked, unlocked or on a schedule?
Unlocked for entry while the gallery is open, always free to leave, and on a schedule the rest of the time. MTA Away's guide to the district notes that openings are generally on Thursday or Friday evenings from 6 p.m.; at that hour the door is a public entrance, and staff cannot be expected to buzz in a crowd. We set the lock or strike to a “passage” mode for the opening, triggered by the schedule or by a staff member's phone, and back to locked when the last visitor leaves.
Exit never depends on the schedule. Electric strikes leave the lever or push bar working at all times, so people inside can leave whether the strike is locked or not, and a magnetic lock must release from door-mounted hardware and on power loss under the city code. The model codes go further for main doors locked with a key from inside, requiring a sign that the door must stay unlocked while the space is occupied; we avoid that arrangement altogether.
For ordinary days the schedule mirrors the gallery's hours — for most galleries Tuesday to Saturday, with Saturdays off in summer — and the front desk can lock the door instantly from a phone if something in the room needs attention.
Our gallery door is frameless glass with nothing to cut a strike into — what can lock it electronically?
Several things, none of which require replacing the glass. Electric bolt locks for glass doors are made to sit in a top rail, in a floor box, or in a surface patch that clamps to the glass, and magnetic locks can be mounted with a U-shaped bracket that wraps the top edge of an outward-swinging glass door, as access-control makers such as Ubiquiti show in their installation guides. The right choice depends on whether the door swings in or out, whether it has patch fittings at the top and bottom already, and where cable can run without showing.
Each option has trade-offs. A magnetic lock is fail-safe by nature and needs door-mounted release hardware under the city's code; an electric bolt can be fail-secure but needs careful alignment on a heavy pivoting door; a surface patch is visible, so it has to look right on a storefront that may be in a historic district.
We assess the door, the pivot and the floor, show you the options with photographs of comparable hardware, and price the one that suits the gallery — reader inside the glass where the glass allows it, so nothing new needs to be fixed to the facade.
Should the electric strike on our gallery entrance be fail-safe or fail-secure?
For nearly every gallery front door, fail-secure. As the door-hardware writers at iDigHardware put it, fail-safe products are unlocked on the access side when power is removed, and fail-secure products stay locked. A fail-safe strike would leave the gallery open to the street every time the power drops; a fail-secure one keeps the door latched and still lets everyone inside leave, because the lever or push bar works independently of the strike.
There are also places where the choice is made for you. Electric strikes on fire-rated doors must be fail-secure so the door stays positively latched in a fire, and magnetic locks are only made fail-safe. If your door is rated, or uses a magnet, the decision is already in the hardware.
Staff still need a way in during an outage, so we keep a key override on the lockset and put the controller on a battery backup that carries the strike through a short cut. You decide, with us, how long that backup should last.
Where should the lock controller and battery backup go in a ground-floor space that took water in 2012?
High on the wall, on the dry side of the room, and never on the floor or inside a low cabinet. Artlyst reported three to five feet of water inside Chelsea galleries after Sandy, with water reaching five feet inside one of them. A controller, power supply or battery under the reception desk at that height would have been underwater, and an access controller that has been submerged is a replacement, not a repair.
We mount the controller and its battery at or above head height in a labelled enclosure, run the cable down to the door from above, and keep any connection that has to be low — a door contact, a request-to-exit button — simple, sealed and cheap to replace. The lock on the door itself is chosen to fail in a predictable way: locked, with a key override.
We also leave a one-page sheet in the enclosure: what to switch off when a storm warning goes out, what to check before power is restored, and the number to call. A gallery that already had water once tends to want that written down.
While the building is being worked on
Scaffolding is going up on our building for facade work — which doors need attention while it is there?
Any door or window that a person on the scaffold can reach, which is usually more than people expect. The city's Facade Inspection and Safety Program requires owners of buildings taller than six stories to have exterior walls inspected every five years, so sidewalk sheds and pipe scaffolds come and go across Chelsea. In December 2021, Patch reported that a burglar scaled scaffolding outside an artists' studio on West 39th Street in Midtown and got in through an unlocked second-storey window.
Before the scaffold goes up, list every opening on the scaffolded faces: terrace and balcony doors, roof bulkhead doors, back doors onto setbacks, and windows. Doors in that list are worth a lock that can tell you when it opens and that locks itself after a set time; windows need their own latches or locks and are outside a door lock's reach.
When the work ends and the scaffold comes down, we can switch the extra alerts off again. If the building's own doors are part of the problem, the board or landlord should hear about it in writing.
