Home Rekeying & Lock Change
Moving into a new apartment on the Upper West Side, switching roommates in a Bushwick walkup, or finally getting out of a lease in Astoria — any of these transitions raises an immediate question about your front door. Who still has a key? A former tenant, a subletter, a property manager, or an ex-roommate could have made copies you never knew about, and standard door hardware gives you zero visibility into that history. Rekeying your locks or scheduling a full lock change service is the single most reliable way to start fresh, and Harlem Locksmiths NYC makes it simple with mobile technicians who come directly to your address across all five boroughs, 24 hours a day, seven days a week.
Open 24 hours, 7 days a week · Licensed, bonded & insured
This page explains exactly what rekeying and a lock change involve, when each is the right call, and how our trained, insured technicians handle everything from a basic doorknob cylinder to a heavy-duty mortise lock — the multi-point mechanism you will find on most New York City apartment doors and brownstone entryways. Whether this is a planned house lock change after a move or an emergency lock change following an unexpected situation, we confirm a clear, upfront price before a single tool comes out of the bag.
What we do
Available 24/7
Day, night, weekends and holidays — a real local locksmith answers and rolls a fully-stocked van.
Fast local response
Based in New York, we reach the New York area in well under an hour.
Insured & background-checked
Vetted technicians, up-front pricing, and no surprise add-ons when we arrive.
Damage-free entry
We pick and bypass locks the right way, so most lockouts are solved without drilling anything.
More about our work
Everything you need to know about how we help — at a glance.
Why Rekeying or a Home Lock Change Matters More in NYC Than Almost Anywhere Else
New York City rental turnover is among the highest in the country. In dense neighborhoods like Harlem, Washington Heights, and the East Village, a single apartment may cycle through three or four tenant groups in a five-year stretch. Landlords are legally required to provide working locks, but the law says nothing about whether the cylinders were rekeyed between occupancies. That means the person who lived in your unit two tenants ago may still have a working key. A professional home lock change or rekey closes that gap instantly and costs a fraction of what a single break-in, stolen laptop, or identity theft event would set you back — without requiring you to replace the entire door hardware if the existing hardware is still in solid condition.
The same logic applies when a roommate situation ends badly or even amicably. Keys get duplicated, lost, or simply forgotten about. Our mobile technicians arrive equipped to rekey or replace cylinders on site, including the mortise lock bodies that are standard on pre-war and mid-century New York apartment buildings. No return trips, no waiting days for a callback — the job is done at your door, on your schedule.
Rekeying vs. Full Lock Change Service: Choosing the Right Fix for Your Door
Rekeying means a technician disassembles the existing cylinder, rearranges the internal pin stacks to a new configuration, and cuts fresh keys to match. The hardware stays on the door; only the internal secret changes. This works well when the lock body itself is in good shape — no worn cam, no bent tailpiece, no damage to the mortise lock housing. It is also the right move when you want all your entry points keyed alike, so one key opens the front door, the deadbolt, and the building mailbox without a bulky keyring.
A full door lock change makes more sense when the hardware is outdated, has been tampered with, or simply does not meet the security standard you want. Upgrading from a basic builder-grade doorknob lock to a Grade 1 deadbolt, swapping an old rim lock for a modern mortise lock assembly, or installing a smart-lock cylinder that accepts both a physical key and a keypad code — all of these require a full replacement. Our technicians carry a wide range of hardware including Schlage, Kwikset, and mul-T-lock cylinders so the upgrade happens in a single visit. If you are a small business owner, we also handle commercial lock change work on storefront doors, office suites, and multi-tenant buildings, including high-security mortise lock systems rated for heavy daily use.
Our Home Rekeying and Lock Change Services: What We Actually Do
Harlem Locksmiths NYC technicians are trained across an unusually wide range of hardware types because New York buildings span every era of construction. A 1910 Harlem brownstone, a 1960s Co-op City high-rise in the Bronx, and a converted Williamsburg warehouse loft each demand different expertise. Our lock change services include, but are not limited to: mortise lock rekeying and full mortise lock replacement, deadbolt installation and cylinder swap, doorknob lock rekey and replacement, rim lock and night-latch service, smart lock and keypad lock installation, master key system setup for landlords and property managers, high-security cylinder upgrades, bump-proof and pick-resistant lock installation, mailbox lock change, storage unit padlock replacement, garage door lock service, gate lock installation, sliding door lock reinforcement, door frame and strike plate reinforcement, peephole installation and upgrade, chain and barrel bolt installation, magnetic lock installation for commercial doors, office suite rekeying after staff changes, keycard and fob system consultation, padlock hasp installation, cabinet and file room lock change, intercom-integrated electric strike service, emergency lock change following a break-in or attempted entry, lock change for sublet or short-term rental turnover, and multi-point locking bar installation on steel security doors.
We work damage-free wherever the existing door and frame allow it — no unnecessary drilling, no scarred door jambs. When a situation does require new hardware, we walk you through the options, explain what each part does, and let you make the call before we order anything from the van stock. If you have a Defiant lock and need a defiant lock change code reset, or a Honeywell door lock that needs a honeywell door lock change code update after a roommate leaves, our technicians handle keypad reprogramming on the spot in addition to mechanical cylinder work. For combination padlocks, including master lock change combination resets, we carry the manufacturer reset tools and documentation to do it correctly rather than forcing the mechanism.
Ready to get started? Call (646) 585-2813 — we answer 24/7 and can typically dispatch a technician to Manhattan, Brooklyn, Queens, the Bronx, or Staten Island within the hour.
Emergency Lock Change and What Determines Your Final Price
An emergency lock change at two in the morning after a break-in attempt on a Flatbush side street is a different job than a scheduled rekey on a Saturday afternoon in Midtown — and the price reflects that honestly. Rather than quote flat numbers that vary wildly by situation, we base every estimate on four factors: the type and brand of lock hardware involved, the time of day and whether an emergency response is needed, travel distance from our nearest available technician, and the parts required for the job. A single deadbolt rekey on existing good-condition hardware involves minimal parts; a full commercial lock change on a steel-frame storefront door with a multi-point mortise lock body involves substantially more. In every case, we confirm the exact price upfront before work begins — no surprise charges added to the bill at completion.
The same pricing transparency applies to after-hours and emergency locksmith calls. We do not use the emergency designation as a blank check to inflate costs; we explain what the after-hours rate covers and get your agreement first. New Yorkers are accustomed to dealing with businesses that add fees without warning — that is not how we operate. When you call (646) 585-2813, the dispatcher will ask a few quick questions about your door type and situation, quote the job honestly, and send a trained, insured technician who carries the parts most likely needed for your specific building type.
Frequently asked questions
How much does a lock change or rekey cost from an NYC locksmith?+
There is no single number that covers every situation, and any locksmith who quotes a flat price without knowing your lock type, door condition, and location should be questioned. The factors that shape the final cost are the type of lock — a standard deadbolt cylinder costs less to service than a full mortise lock body — the time of day, whether emergency dispatch is needed, travel distance to your address, and the specific parts required. Harlem Locksmiths NYC always confirms an exact upfront price before any work begins, so there are no surprises on the invoice.
How much do locksmiths charge on average for an emergency locksmith call in New York?+
Emergency locksmith pricing in New York City varies based on the same four factors: lock type, time of call, location, and parts. An after-hours or emergency call will carry a higher rate than a daytime scheduled appointment, and that is true across the industry. What matters is whether the company is transparent about it. When you call us at (646) 585-2813, we explain what the emergency rate covers and get your approval before dispatching. We answer every call 24 hours a day, seven days a week, with no obligation to commit until you hear the quote.
How do I find a reputable locksmith in NYC without getting scammed?+
This is a real concern in New York — the city has seen cases of unlicensed operators listing fake local addresses and dispatching untrained workers who damage doors and overcharge. A few practical checkpoints: confirm the company has a genuine local presence and a verifiable phone number, ask whether the technician is insured, confirm that pricing is given upfront before work starts, and verify that the person who shows up can explain the repair in plain terms before touching your door. Harlem Locksmiths NYC operates with trained, insured technicians who identify themselves when they arrive and walk you through the job before beginning.
What is a mortise lock and why does it matter for NYC apartments?+
A mortise lock is a lock body that is set into a pocket — or mortise — cut into the edge of the door, rather than sitting on the surface of it. Virtually every pre-war and mid-century New York City apartment building uses mortise lock hardware because it offers superior strength compared to a cylindrical deadbolt drilled through a thin door edge. Rekeying or replacing a mortise lock requires disassembling the entire body from the door pocket, which is more involved than a standard deadbolt swap. Our technicians are experienced specifically with the mortise lock styles common in New York's older building stock and carry the right tools and replacement parts for this work.
Is rekeying really enough after a roommate moves out, or do I need a full lock change?+
Rekeying is sufficient in most cases when the existing lock hardware is in good working condition and has not been tampered with. The rekey process changes the internal pin configuration so every previously cut key becomes useless, giving you complete control from that point forward. A full lock change makes more sense if the hardware is worn, damaged, or simply below the security grade you want — for example, upgrading from a builder-grade doorknob lock to a high-security mortise lock. Our technicians assess your door on arrival and give you an honest recommendation before you commit to either path.
Can Harlem Locksmiths NYC handle lock changes for a business or commercial property?+
Yes. Commercial lock change work is a core part of what we do, including rekeying office suites after an employee departure, replacing mortise lock hardware on storefront doors, setting up master key systems for multi-tenant buildings, and installing high-security cylinders on warehouse and storage space entries. Commercial doors often involve heavier hardware and more complex mechanisms than residential doors, and our technicians are trained specifically on commercial-grade equipment. We serve businesses across Manhattan, Brooklyn, Queens, the Bronx, and Staten Island and can schedule after-hours work to avoid disruption to your business day.
Locked out or need a lock fixed? We are on the way.
We answer 24/7 — talk to a real local locksmith now.
(646) 585-2813