Lock Rekey Service in Brooklyn – LockIK, Your Old Keys Stop Working

Honestly, in Brooklyn, rekeying an existing lock typically costs about $20-$40 per cylinder plus a service call, and it does the one thing replacing the whole hardware doesn’t automatically do-it makes every old key stop working. I’m Luis “Lou” Andrade, a former superintendent turned locksmith who’s spent 26 years figuring out not just how locks work, but who your lock still trusts when you’re not paying attention.

Lock Rekey Cost in Brooklyn and What You Actually Get for It

On the lid of my red pin tray, I’ve written four words in permanent marker: “Same lock, different story now.” Because that’s what rekeying is-it’s not about replacing hardware, it’s about cutting people off. You’re changing the password your door responds to, and every key you didn’t cut yourself becomes a useless piece of brass. I don’t call it “changing locks.” I call it un-inviting people. And here’s the ritual I do with every client: after I rekey your cylinders and cut your new keys, I hand you one of the old ones and we throw it in the trash together. Sounds small, but watching that key hit the bottom of the bin-that’s when it clicks that your ex-roommate, the old cleaner, whoever-can’t just walk in anymore.

One chilly October night around 11:30 p.m. in Kensington, I got a call from a young couple who’d just had an ex-roommate let himself into their apartment while they were at work. Nothing was taken, but a few drawers were open and some mail was moved. The super’s solution was, “I can give you a new key.” Mine was the pin tray. I pulled their deadbolt and knob cylinders onto a bath towel on the coffee table, dumped the old pins, and re-pinned both to a fresh key pattern while they listed everyone who’d ever had a copy: two exes, three friends, a dog walker, an old cleaner, and the ex-roommate. When we tested the new keys and the old one just spun uselessly, I handed that ex-roommate’s key to them and watched them drop it in the trash. You could see their shoulders finally come down. That relief-that’s what you’re paying for. Not just metal and springs.

Same Lock, Different Story: How Rekeying Actually Works

On the lid of my red pin tray, I’ve written four words in permanent marker: “Same lock, different story now.” Because here’s what rekeying really is: I pull your cylinder out of your door, dump the tiny brass pins onto a towel or that tray, swap in a different set of pins that match a new key pattern, and slide the cylinder back in. Your lock’s “brain” is those pins-think of them like a password. The old key pushed them to one arrangement; the new key pushes them to a different arrangement. Same hardware, different password. Your deadbolt still looks exactly the same from the hallway. In Brooklyn walk-ups especially, you’ve got a mix of old Kwikset knobs, Schlage deadbolts, maybe a mortise lock from 1952 if you’re in a prewar building. I’ve seen them all. Most can be rekeyed as long as the cylinder isn’t completely rusted or the keyway isn’t something obscure. And here’s what matters: the lock doesn’t remember the old keys. It just stops obeying them.

One humid July afternoon in Bed-Stuy, four roommates called me from a third-floor walk-up because their landlord had given them “a whole history lesson in keys.” They had a handful marked “maybe 3R,” “old top lock,” and one that opened both their door and the neighbor’s. That last part made everyone nervous. We sat on the living room floor and walked every door: main deadbolt, bottom lock, back fire escape door. The deadbolt and the neighbor’s knob were on the same keyway-someone had tried to be lazy years ago. I rekeyed their deadbolt and fire escape door to a unique combination, keyed alike so one new key worked both, and left the neighbor’s cylinder on its own system. On a scrap of cardboard we wrote: “Our keys open only our doors now.” They taped it to the fridge with the new keys hanging underneath. That shift-from “we share keys with strangers” to “our doors answer only to us”-that’s the human side of rekeying.

Do You Actually Need Rekeying Right Now?

If we were standing in your hallway in Brooklyn right now and you said, “We got the keys from the landlord, so we’re probably fine,” I’d ask you two questions before I believe that: who lived here before you, and who else had access to this place in the last two years-supers, cleaners, dog walkers, contractors, ex-roommates? Because here’s my habit from the super days: I assume every key gets copied at least once without anyone telling you. Friend borrows a key for the afternoon, stops at the hardware store, makes a “just in case” copy, forgets to mention it. Cleaner loses their key ring, gets a replacement cut, finds the original a week later-now there are two. One rainy Sunday morning in Bay Ridge, a retired firefighter called me because he’d just moved into a co-op and found a shoebox of keys labeled “old super,” “cleaner,” and “bike room” in the hall closet. He had no idea which still worked where, and he wasn’t interested in guessing. That’s the classic too-many-mystery-keys problem. So let’s sort out if you really need to change your locks or just rekey them.

Brooklyn-Specific Rekey Questions I Hear All the Time

From a former super’s point of view, the real security problem in most Brooklyn buildings isn’t that the locks are bad-it’s that too many old keys are still out in the wild. I’ve seen five-story walk-ups in Kensington where the same Schlage keyway has been used since 1987 and nobody’s bothered to change the pins. Front doors, fire escape doors, basement storage, shared laundry rooms-they’re all on keys that have been copied, loaned, lost, and found a dozen times. And here’s my opinion: people replace entire locks when what they actually need is to rekey the perfectly good hardware they already have. Swapping a lock without changing the pin pattern is like buying a new phone and keeping your old passcode taped to the screen-you’ve spent money but gained zero security.

I’m warm but I’m blunt, like the neighbor who’ll tell you your car headlight is out before you drive away. I’ve walked apartments from Kensington to Bay Ridge, sat on floors in Bed-Stuy pulling cylinders, and asked a thousand versions of the same question: “Who else has had access to this place?” Most people are genuinely surprised when they start listing names. Here are the answers I end up repeating in hallways and stairwells all over Brooklyn.

Before You Call LockIK: A Quick Key Audit in Your Brooklyn Apartment

Here’s the blunt truth: replacing a lock without changing the key pattern is like buying a new phone and keeping your old passcode taped to the screen. Before you call me, walk your apartment and list who has-or had-keys to each door: front deadbolt, front knob, back door, basement, storage, mailbox. Write down the ex-roommate, the cleaner who quit, the dog walker, the contractor, the neighbor you gave a spare to “just in case,” and the friend who borrowed a key two years ago and you’re not sure if they returned it.

Write down every person who could still walk into your place without knocking.