Mortise Lock Repair & Replacement
In the Bronx, where pre-war apartment buildings line the Grand Concourse and multi-family brick walk-ups crowd every block from Fordham Road to Co-op City, mortise locks are the standard hardware choice — and for good reason. These deep-set, multi-component mechanisms offer far more security than a simple cylindrical knob lock, but when one fails, the repair demands real expertise. East Bronx Locksmith is a local, mobile, 24/7 locksmith team that comes directly to your door anywhere in the borough — no shop visit, no waiting around.
Open 24 hours, 7 days a week · Licensed, bonded & insured

Whether your mortise lock is stiff, the latch won't retract, the cylinder has been compromised after a break-in attempt, or you simply need a full mortise lock replacement on an exterior apartment door, our trained and insured technicians carry the parts and tools to handle it on the spot. We diagnose the problem first, confirm an exact up-front price before touching anything, and aim for a damage-free repair or swap every time. If you need us now, call (347) 604-6615 — we answer around the clock.
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 The Bronx, we reach the The Bronx 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.
Frequently asked questions
What is a mortise lock, and is it different from the deadbolt on my Bronx apartment door?
A mortise lock is a complete locking mechanism housed inside a deep rectangular pocket cut into the door's edge. It combines a latch and deadbolt — and sometimes additional functions — in one internal case, as opposed to a standalone deadbolt that only bores through the face of the door. Most older Bronx apartment doors use mortise hardware because it was the building standard when those structures were constructed, and it offers a more secure, integrated fit within the door stile. If your door has a separate handle trim and you can see a box-shaped case along the door's edge, you almost certainly have a mortise lock.
How do I know whether my mortise lock needs repair or full replacement?
The answer depends on what failed inside the assembly. A worn or damaged cylinder can usually be replaced without touching the case. A stiff or non-retracting latch is often a spring or cam issue that a skilled technician can service in place. However, if the case itself is cracked, heavily corroded, or so worn that the bolt no longer throws cleanly to the strike plate, a full lock set replacement is the more reliable long-term solution. Our technician will inspect the hardware on-site and walk you through the finding before recommending anything — you make the call with full information.
Can you upgrade my apartment door to a smart mortise lock or an electric mortise lock?
Yes. A smart mortise lock or electric mortise lock can often be installed in the same door prep as your existing mortise hardware, which means no additional routing or cutting in most cases. Electric units work well for Bronx landlords managing multiple units who want remote-access or intercom integration. Smart locks add keypad or app-based access on top of that. We handle the full installation and programming in a single mobile visit. Just note that some older doors with non-standard mortise dimensions may require a case adapter — our tech will check compatibility at the start of the job.
How is the price determined for a mortise lock repair or replacement service call?
Several factors shape the final quote: the specific mortise lock hardware required (a standard residential cylinder replacement costs differently from a full commercial-grade mortise lock set with a new trim package), the time of day you call, how far our nearest technician is from your Bronx address, and whether any additional work — like strike plate reinforcement or door adjustment — is needed. We confirm an exact price with you before any work begins. There are no charges added after the fact.
My car door won't open and I'm stuck in the Bronx — can East Bronx Locksmith help with that too?
Absolutely. If you cannot open your car door and you need to get somewhere urgently, call (347) 604-6615 right now. We dispatch mobile technicians for car lockout calls across the Bronx 24 hours a day, seven days a week. Our team uses non-damaging entry methods designed to get your door open without scratching the frame or breaking the window seal. We also handle broken car keys, keys locked in the trunk, and key programming for a wide range of vehicle makes.
Do you service commercial doors and storefronts in the Bronx, not just apartments?
Yes — commercial locksmith work is a significant part of what we do. Bronx storefronts, offices, warehouses, and mixed-use buildings often use heavy-duty mortise lock sets, electric strikes, push-bar exit devices, and access control panels that require a different skill set than standard residential hardware. Our technicians are experienced with commercial-grade Corbin Russwin and similar institutional hardware, electric mortise lock wiring, and master key systems used across multi-tenant commercial properties. We respond to commercial calls 24/7, including after-hours emergency locksmith situations where a business owner cannot secure their premises after a break-in or hardware failure.