NYC Apartment Door Lock Requirements: What Your Landlord Has to Install

In New York City the building owner has to put a key lock on your apartment door and hand you at least one key. In a normal apartment building the door needs four more things: a heavy duty latch set, a heavy duty deadbolt, a chain door guard, and a peephole. From the hallway the deadbolt is unlocked with a key, while from the inside you turn it open with your thumb. The door also has to swing shut and latch on its own. Most of the lock installation and door closer repair work we do in apartment buildings is bringing a door back to that list.

I am Roye Gvili. I started Top Notch Locksmith & Security in Manhattan in 2010, and my technicians work on apartment and hallway doors in all five boroughs. Tenants call us because a lock is missing or broken. Owners and managing agents call us because an inspector left a violation on the door. By the end of this you will know the five pieces of hardware the city requires, why the self-closing rule is the one being inspected right now, what is not allowed on the door, and how to get a missing or broken lock fixed.

5 Things NYC Law Requires on Your Apartment Door

The hardware side of the rule is short, and four of the five items sit in one section of the code. That section covers class A multiple dwellings. Class A is the legal name for a normal apartment building where people live year round, so almost every reader is in one.

1. A key lock, and at least one key for you. Section 27-2043 of the New York City Housing Maintenance Code puts both of those on the owner. One key is the minimum. Nothing stops an owner from cutting a second one for a roommate or a partner.
2. A heavy duty latch set. This is the lock that holds the door shut when you pull it closed behind you. Heavy duty is the code word, and a light knob set off a hardware store shelf does not meet it.
3. A heavy duty deadbolt, key outside and thumb-turn inside. The code names both sides. From the hallway you open it with a key, while from inside your apartment you turn it open with your thumb and no key in your hand.
4. A chain door guard. The same section says the door gets a chain guard, so you can open it part way and still look out. This is the piece people take off and never put back, usually after a paint job.
5. A peephole. Section 27-2041 puts a peephole in the entrance door of each apartment. It goes where you can stand inside and see anyone right outside your door. The listed exceptions are hotels, apartment hotels, school dormitories, and owner-occupied one and two family homes.

None of that is about brand or price. The code says what has to be on the door, and says nothing about who makes it, so two doors on the same floor can both pass with completely different locks.

The Self-Closing Door Rule Is the One Being Inspected Right Now

Every apartment door and hallway door in a building with three or more homes has to swing shut and latch on its own once someone lets go of it. That comes from section 28-315.10 of the Administrative Code. Housing Maintenance Code 27-2041.1 makes those doors the owner's job to keep in repair. A door that does not self-close is a class C immediately hazardous violation. The owner gets 14 days. The civil penalty runs from $250 to $500, plus $250 a day from the correction date until it is fixed.

Two things happened recently that put this hardware in front of everyone. On April 24, 2026 the New York City Fire Department released a public service announcement after a fire three days earlier at 660 East 187 Street in the Bronx. Fire marshals found multiple doors left open. One of them was the door of the apartment where the fire started. Smoke and flames reached the hallways, the staircase and every floor. Two people were killed. And in November 2025 the Department of Housing Preservation and Development put out its own reminder. The point of these doors is that nobody has to remember to close them.

The enforcement is real and it is running now. Local Law 71 of 2022 came after the Twin Parks fire in the Bronx. It tells the housing agency to pick 300 apartment buildings a year and inspect them door by door, whether or not anyone complained. The agency reported the results to the City Council for July 2024 through June 2025. Inspectors checked 9,654 doors in those 300 buildings. About 70 percent worked properly. The rest drew 2,937 violations. All but 11 of the 300 buildings got at least one. Owners fixed and certified about 76 percent of them. The next 300 buildings are being inspected during the year that runs to June 2026.

You can check your own door in about ten seconds. The housing agency published the same test it gives its inspectors.

3 Things That Are Not Allowed on an Apartment Door

These are the three I get called about most, and all three come up on inspections.

1. A deadbolt that needs a key on the inside. From inside the apartment the required deadbolt has to turn with a thumb-turn, so a lock keyed on both sides fails that test. It is also the hardware the Fire Department warns about. In smoke and in the dark you will not find a small key.
2. Anything that holds the door open. The housing agency spells this out for tenants: no propping doors with objects, no tape on the latch, no wood wedges, no kick-down stops, and no taking the closer apart. Even a thick floor mat counts, because it slows the swing down.
3. A door that no longer meets the frame. A gap at the bottom, loose or missing hinges, a shifted frame, a closer that leaks. The door stops latching. An inspector writes it up even when the lock itself is fine.

Tenants ask me this every time, so I will say it plainly. Violations for these go to the building owner, not to you. Report the door and the paperwork goes to the owner.

What the Building Front Door and Lobby Have to Have

Your apartment door is one set of rules. The front of the building is another. Those rules come from state law, not the city code. Section 50-a of the New York Multiple Dwelling Law covers buildings put up or converted after January 1, 1968. Every entrance from the street, a court, a yard or the cellar gets automatic self-closing and self-locking doors. Those doors stay locked at all times unless an attendant is actually on duty.

The same section covers the buzzer. A building with eight or more apartments needs an intercom. The person in each apartment has to be able to speak to whoever is standing at the main entrance. Older buildings can get one too, once a majority of tenants ask in writing, and the statute then puts a clock on the owner. We wrote up the tenant side of a dead buzzer in apartment intercom not working, and the hardware side lives on our intercom installation page.

What You Can Add Yourself as a Renter

You are allowed one lock of your own. Section 51-c of the Multiple Dwelling Law lets a tenant install one lock, no more than three inches in circumference, separate from the lock the owner installs and maintains. A lease clause charging you a fee for that right is void. The trade is the key, and a duplicate goes to the owner or the agent on request.

Three notes from our jobs. A rekey is usually all somebody actually wants, because it kills the old keys and needs no new hardware. An electronic lock does not remove the duplicate key duty, and boards often say no. We cover that in smart locks in a NYC rental. And a lock change is a different question from a landlord changing your locks, which we cover in can my landlord change the locks.

How to Get a Missing or Broken Lock Fixed

Missing hardware and a broken closer follow the same path, and it starts with the owner.

1. Tell the owner or managing agent in writing. Text or email is fine. Name the door, name the part, keep the date. Most problems get fixed at this step.
2. Call 311 if it does not get fixed. The housing agency takes complaints about a missing lock, a missing peephole and a door that will not self-close. It sends an inspector.
3. Let the violation run its course. A self-closing door violation is class C and the owner has 14 days. The agency re-inspects after that, whether or not the owner certified the repair. If the condition is still there, the agency can send its own contractor under its emergency repair program. The cost goes on the property.

On the owner and agent side, the cheap move is checking doors before an inspector does. In the same report, owners who got advance notice corrected about 76 percent of their violations, while citywide the rate is closer to 50 percent. These are small repairs when somebody actually looks. A closer, a hinge, a strike plate, a chain guard, a peephole. We handle those on a single visit, along with door hardware and lock changes when the part is past repair.

Top Notch Locksmith & Security is a licensed and insured locksmith and security company based in Manhattan. We work on apartment doors, co-ops, condos, hallway doors and commercial entrances across the five boroughs of New York City. Code hardware, closers and high security cylinders are daily work for my team, so we see which doors pass and which ones get written up.

Frequently Asked Questions

Need Code Hardware Put Back on the Door?

Maybe you are a tenant with a missing chain guard or peephole. Maybe you are an owner or managing agent looking at a self-closing door violation with 14 days on it. We work on apartment and hallway doors across the five boroughs and answer the phone 24 hours a day. Call (646) 781-7070 or tell us what is wrong with the door, and we will tell you what the door needs to pass.