Can Your NYC Landlord Charge You for a Lock Change?

Sometimes, but in one specific case the answer is a flat no that no lease can change. Which case you are in depends on what the charge is actually for, and most of these arguments happen because the landlord and the tenant are describing three different transactions using the same three words.

That is the short version. Here are the three, because telling them apart is most of the work.

The three charges people call a lock change

One: a fee for a lock you installed yourself. You put your own lock on the apartment door. The lease says that privilege costs money, or the super says it will come out of your deposit. This one is void under state law, and it is not close.

Two: a deduction from your security deposit after you move out. The landlord replaced or rekeyed a lock once you were gone and billed it to the deposit. This one is allowed, but only in narrow circumstances that most deductions do not meet.

Three: a routine rekey between tenants. The landlord changes the cylinder for the next tenant as a matter of course. That is the landlord’s cost, not yours, and it is the easiest of the three to get wrong.

Charge one: a fee for your own lock is void

If you live in a multiple dwelling, meaning a building with three or more independent families, Multiple Dwelling Law § 51-c lets you install your own lock on the apartment entrance door, separate from the one the owner supplied. It has to be no more than three inches in circumference, and you have to give the landlord a duplicate key if they ask for one.

Then the statute deals with fees, and it does not hedge:

every provision of any lease hereafter made or entered into which reserves or provides for the payment by such tenant of any additional rent, bonus, fee or other charge or any other thing of value for the right or privilege of installing and/or maintaining any such lock, shall be deemed to be void as against public policy and wholly unenforceable

Additional rent, bonus, fee, other charge, or any other thing of value. The drafters were closing doors, not leaving them open.

“Void as against public policy and wholly unenforceable” is about as strong as statutory language gets. It means the clause has no legal effect at all. Signing the lease does not rescue it. A provision that is void as against public policy cannot be consented to, which is the entire point of the category.

One honest caveat, because it trips people up. This does not make the lock free. You buy your own lock and you pay to have it installed. What the landlord cannot do is charge you a fee on top for the right to have it there. The full rule, including what happens when the landlord asks for that duplicate key, is in can a tenant change the locks in NYC.

Charge two: a deduction from your security deposit

This is the common one, and it is governed by General Obligations Law § 7-108, rewritten by the Housing Stability and Tenant Protection Act in 2019. Paragraph (1-a)(b) sets out every purpose a deposit may be kept for, and the list is closed:

The entire amount of the deposit or advance shall be refundable to the tenant upon the tenant’s vacating of the premises except for an amount lawfully retained for the reasonable and itemized costs due to non-payment of rent, damage caused by the tenant beyond normal wear and tear, non-payment of utility charges payable directly to the landlord under the terms of the lease or tenancy, and moving and storage of the tenant’s belongings.

Four categories. A lock charge has to fit inside “damage caused by the tenant beyond normal wear and tear,” because it plainly is not rent, utilities, or storage.

Two words in that sentence do a lot of work, and both are easy to miss. The costs must be reasonable, and they must be itemized. A line on a statement reading “lock replacement, $600” is not itemized in any meaningful sense. It does not say which lock, which door, what was wrong with it, or what the money bought.

So is a worn lock damage, or is it wear and tear?

This is where the real argument lives, and the statute does not define the line, so here is the practical version from the inside of the trade. Locks are mechanical. They have springs, pins, and moving metal, and they are operated several times a day for years. They wear out on their own, and normal wear is exactly what the statute says you cannot be charged for.

Things that are ordinary wear on a NYC apartment lock:

• A cylinder that has become stiff over years of use.
• A key that no longer turns smoothly because the key itself is worn.
• A deadbolt that drags on the strike because the building has settled, which pre-war stock does constantly.
• Worn finish, a loose knob, a tired spring.

Things that are genuinely tenant damage:

• A cylinder that was drilled out, usually during a lockout somebody handled badly.
• A key snapped off inside because it was forced.
• A lock broken during a forced entry that you or your guests caused.
• Landlord hardware you removed and did not put back.

Then there is the grey case that produces most disputes: you lost the keys. Nothing is broken, but the landlord has a real security reason to rekey. That argument is stronger for the landlord than the worn-cylinder one, particularly if the lease addresses lost keys. It still has to clear the same two hurdles, reasonable and itemized.

The principle worth carrying into that conversation is that the remedy has to match the problem. Losing a key justifies a rekey. It does not justify a brand-new high-security lock on a door that had a builder-grade cylinder when you moved in. If the landlord upgrades the hardware, that is an improvement to their property, and improvements are not tenant damage. The gap between the two is theirs to explain.

The landlord has the burden of proof, not you

Most tenants assume they have to prove the lock was fine when they left. The statute says the opposite, at paragraph (1-a)(f):

In any action or proceeding disputing the amount of any amount of the deposit retained, the landlord shall bear the burden of proof as to the reasonableness of the amount retained.

That single sentence changes how you approach the whole thing. You do not have to prove a negative. They have to justify the number. Which means the most useful thing you can bring to the argument is what the work actually costs.

What a lock change actually costs in NYC

These are our real figures, for all five boroughs. They are here so both sides can sanity-check a deduction.

Job	NYC cost
Rekey, per cylinder	from $75
Typical apartment, knob and deadbolt rekeyed	$150 – $185
Deadbolt repair	from $125
Standard Grade 2 deadbolt, supplied and installed	from $150
Lock installation or replacement, per opening	$125 – $450

Rekeying and replacing are different jobs at very different prices. If the concern is only that an old key still exists, the answer is a rekey, and that is under $200 for a whole apartment door. A deduction well above these numbers needs an explanation, which under paragraph (1-a)(f) is the landlord’s to give.

If you are the one getting the work done, our lock change and rekeying service quotes a firm price before anything starts, and lock installation and repair covers the replacement side.

Charge three: the routine rekey between tenants

Plenty of NYC landlords rekey every unit at turnover. It is good practice and we do a lot of it. It is also, straightforwardly, a cost of operating a rental building, in the same category as painting the walls and cleaning the floors between tenancies.

It is not damage caused by the outgoing tenant, so it does not fit any of the four categories in paragraph (1-a)(b), and so it does not belong on your itemized statement.

Whether the landlord is obliged to do it at all is a different question, and we answered it separately in do NYC landlords have to change locks between tenants.

The deadline that ends a lot of these arguments

Before you spend a week arguing about whether a cylinder was worn, check the calendar. Paragraph (1-a)(e):

Within fourteen days after the tenant has vacated the premises, the landlord shall provide the tenant with an itemized statement indicating the basis for the amount of the deposit retained, if any, and shall return any remaining portion of the deposit to the tenant. If a landlord fails to provide the tenant with the statement and deposit within fourteen days, the landlord shall forfeit any right to retain any portion of the deposit.

Fourteen days, and the consequence of missing it is forfeiting the right to retain any portion. Not the disputed portion. Any of it.

So the first question is never whether the lock charge was fair. It is whether an itemized statement arrived within fourteen days of you handing back the keys. If it did not, the fairness of the charge stops mattering.

If you have already been charged

1. Get the itemized statement in writing. If you only have a number, ask for the itemization the statute requires. The request itself is useful, because it is dated.
2. Check the fourteen days. Count from the day you vacated. This is the fastest way to resolve it.
3. Ask what the money bought. Which door, which lock, rekey or replacement, and what was wrong with it. Compare against the table above.
4. Separate damage from upgrade. If the new hardware is better than what was on the door when you arrived, say so plainly.
5. Know the exposure. Paragraph (1-a)(g): “Any person who violates the provisions of this subdivision shall be liable for actual damages, provided a person found to have willfully violated this subdivision shall be liable for punitive damages of up to twice the amount of the deposit or advance.” Small claims court in NYC handles deposit disputes and does not require a lawyer.

Timing matters here too. New York gives you the right to request a walk-through inspection before you vacate, and an itemized statement of what the landlord proposes to deduct, while you still have time to fix it. Most tenants never ask for it, and it is the single best moment to deal with a lock the landlord is unhappy about.

Frequently Asked Questions

Can my NYC landlord charge me a fee for putting my own lock on the door?

No. Multiple Dwelling Law § 51-c makes any lease provision requiring additional rent, a bonus, a fee, or any other thing of value for the right to install or maintain your own lock void as against public policy and wholly unenforceable. It applies to multiple dwellings, meaning three or more independent families. You still pay for your own lock and its installation; the landlord simply cannot charge you for the privilege of having it.

Can a landlord take a lock change out of my security deposit?

Only if it fits one of the four categories in General Obligations Law § 7-108(1-a)(b), and for a lock that means damage you caused beyond normal wear and tear. The cost must also be reasonable and itemized. A worn cylinder is wear. A drilled or forced lock is damage.

I lost my keys. Can the landlord charge me to rekey?

That is the strongest version of the landlord’s argument, especially where the lease covers lost keys, and it still has to be reasonable and itemized. A rekey starts at $75 per cylinder and a typical apartment door runs $150 to $185. A charge far above that, or a bill for entirely new high-security hardware, is a different thing from a rekey and has to be justified as such.

What if my landlord misses the fourteen-day deadline?

Under § 7-108(1-a)(e) the landlord forfeits any right to retain any portion of the deposit. Not just the contested part. The entire deposit becomes returnable.

Does the landlord have to prove the charge was fair, or do I have to prove it was not?

The landlord. Section 7-108(1-a)(f) puts the burden of proof on the landlord as to the reasonableness of the amount retained.

Does any of this apply to a co-op or a two-family house?

Not identically. Section 7-108(1-a)(a) has separate treatment for owner-occupied cooperative apartments, and Multiple Dwelling Law reaches only buildings with three or more independent families, so a two-family house tenant does not get the § 51-c right to install their own lock. If you are in a small building or a co-op, confirm which rules reach you before relying on either section.