Door Knob & Deadbolt Installation
If you live in the Bronx — whether that's a walk-up on Tremont Avenue, a co-op near Pelham Bay, or a brownstone off the Grand Concourse — the locks on your entry and interior doors take a beating every single day. Worn spindles, stiff cylinders, and wobbly knobs are not just annoying; they are active security gaps. Tremont Ave Locksmith Inc is a fully mobile, insured locksmith team that comes directly to your address throughout the Bronx, replacing aging door knob locks, upgrading to mortise lock hardware, and adding deadbolts where there were none — all without unnecessary damage to your door or frame.
Open 24 hours, 7 days a week · Licensed, bonded & insured
Our trained technicians are on call around the clock, which means a broken lock at 2 a.m. on a Tuesday is handled with the same professionalism as a scheduled Saturday installation. We work on everything from hollow-core bedroom doors to heavy steel-clad entry doors, and we confirm an exact up-front price before any work begins — no surprises on your bill, no pressure to decide on the spot.
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 Bronx, we reach 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.
Door Knob Lock Replacement and Deadbolt Installation — What the Job Actually Involves
A standard door knob with lock and key is made up of several parts that can independently fail: the latch, the spindle, the cylinder, and the rose plate. When any one of those components wears out — which happens faster in the Bronx's older housing stock where doors have been re-hung, repainted, and slammed shut through decades of New York winters — the whole knob often needs to come out rather than be patched. Our technicians assess whether a cylinder re-key is enough or whether full door knob lock replacement is the right call, so you are not paying for more hardware than the situation demands.
Deadbolt installation is a separate and critical layer. A door knob with lock alone is not sufficient for an exterior entry door, because knob locks can be compromised far more easily than a properly seated single or double-cylinder deadbolt. We install both, ensuring the deadbolt's throw bolt extends deep enough into the strike plate and door frame to resist kick-in attempts — a real concern on ground-floor apartments along busy corridors like Fordham Road or Boston Road. For doors where a mortise lock is the right fit — common in older Bronx buildings that originally came with mortise-pocket doors — we carry the hardware and the expertise to set it correctly, because a mortise lock installed even slightly out of alignment will bind or fail prematurely.
Locked Out of Your Residence? We Can Help Right Now
Getting locked out of your own home is stressful, and it happens to everyone at some point. Before anything else, check whether a trusted neighbor has your spare key, or whether another entrance — a back door, a building super's master — is accessible. If none of those options work, that is exactly when a mobile emergency locksmith earns its value: we come to you, verify ownership of the property, and use non-destructive entry methods wherever the lock condition allows, so your door hardware stays intact.
What you should not do is attempt to pick or force the lock yourself. Beyond the risk of damaging the cylinder or the door frame, an improperly picked lock can leave the mechanism in a state that makes legitimate re-entry harder and replacement more expensive. Our trained technicians handle residential lockouts across every Bronx zip code — 10451, 10452, 10453, 10454, 10455, 10456, 10457, 10458, 10459, 10460, 10461, 10462, 10463, 10464, 10465, 10466, 10467, 10468, 10469, 10470, 10471, 10472, 10473, and 10474 — and we arrive with the tools and the know-how to open the door without tearing up the frame. Call (929) 822-6640 any time — we answer 24/7.
Handling Your Business Needs: Commercial Locksmith and Mortise Lock Services
Commercial doors in the Bronx deal with far heavier traffic than residential ones, and the hardware requirements reflect that. A storefront on Third Avenue or a multi-tenant office building near Yankee Stadium needs a lock door knob and deadbolt setup rated for commercial-grade use — or, more likely, a mortise lock body that integrates the latch, deadbolt, and sometimes a privacy function all into a single reinforced unit inside the door. Mortise locks are the standard in commercial locksmith work for good reason: they distribute load across a larger mortise pocket, reducing the chance of the mechanism failing under repeated, forceful use.
As a commercial locksmith serving businesses throughout the Bronx, we handle new-installation projects, hardware upgrades when a business changes ownership, re-keying after staff turnover, and emergency access when a key breaks off inside a cylinder. We also advise on keypad lock door knob systems and smart lock door knob options for businesses that want audit trails and the ability to change access codes without cutting new keys — useful for offices that onboard and off-board employees frequently. Every commercial job gets the same up-front quote process: we assess the door, the existing hardware, and your security goals, then give you a firm number before a single screw is turned.
Best Auto Locksmith Services, Emergency Response, and Upgrade Options in the Bronx
Tremont Ave Locksmith Inc is not only a residential and commercial locksmith — we are also the Bronx's go-to mobile auto locksmith team. Whether you have locked your keys inside your car near Orchard Beach, lost a transponder key somewhere around Co-op City, or need a replacement key fob for your vehicle, our technicians carry the programming equipment to handle a wide range of makes and models on-site. There is no towing required and no dealership wait time — we come to wherever your vehicle is stranded.
On the residential and commercial side, we also handle upgrade consultations for anyone who wants more than a basic door knob with lock. A double lock door knob — meaning a knob with both a push-button privacy lock and a keyed cylinder — is a popular choice for bedroom and bathroom doors in apartments where roommates or multiple family members need distinct levels of access. For entry doors, adding a smart lock door knob or a keypad lock door knob gives you the convenience of code-based entry, which is particularly useful for Bronx households where elderly family members or young children might lose physical keys. Whatever the hardware direction, we source quality product and install it to manufacturer spec so the warranty holds. If you are ready to upgrade, call (929) 822-6640 — we answer 24/7 and will schedule a visit at the time that works for you.
Frequently asked questions
Answers to what our customers ask most. Still unsure? Just call.
What zip codes in the Bronx, NY does Tremont Ave Locksmith Inc serve?+
We serve every residential and commercial address across all Bronx zip codes: 10451, 10452, 10453, 10454, 10455, 10456, 10457, 10458, 10459, 10460, 10461, 10462, 10463, 10464, 10465, 10466, 10467, 10468, 10469, 10470, 10471, 10472, 10473, and 10474. Whether you are in Riverdale, Hunts Point, Wakefield, Soundview, or anywhere in between, our mobile team drives to your exact location — no drop-off or trip to a shop required.
How much does locksmith service cost for a door knob lock replacement or deadbolt installation in the Bronx?+
The final price depends on several factors: the type of lock hardware being replaced or installed (a basic keyed door knob costs less than a commercial-grade mortise lock), the time of day the service is requested, our travel distance to your location within the Bronx, and whether you are supplying your own hardware or need us to source parts. We never quote a vague range and then adjust it at the door — we assess the job fully and give you one confirmed price before any work begins. There are no hidden fees added after the fact.
How do I know if a locksmith is legitimate and trustworthy?+
A few things to check: the company should be reachable by a consistent local phone number (ours is (929) 822-6640), should be willing to give you a firm price before starting work rather than adding charges once the job is underway, and should arrive in a clearly identified vehicle with a technician who can show identification. Be cautious of any service that gives only a per-call dispatch fee and then dramatically increases the price once on-site. Our technicians are trained, experienced, and insured — and we verify ownership or authorized access before working on any lock, residential or commercial.
What is the difference between a mortise lock and a standard door knob lock, and which one do I need?+
A standard door knob lock mounts through a cylindrical bore drilled through the door face and is common in most residential settings. A mortise lock is set into a rectangular pocket cut into the door's edge and integrates multiple functions — latch, deadbolt, and sometimes a privacy lever — into a single reinforced body. Mortise locks are more common in older Bronx building stock and in commercial settings because they handle heavy traffic better and are harder to compromise. Which one you need depends on your door type, your existing cutout, and your security goals. Our technicians will assess your door on-site and explain the options clearly before recommending a direction.
Can I get a smart lock door knob or keypad lock door knob installed on my Bronx apartment door?+
Yes, and this is a growing request, particularly among Bronx residents who manage access for family members or want to eliminate physical keys altogether. We install smart lock door knob and keypad lock door knob systems on both interior and entry doors. There are some factors to consider first: your door's thickness, the existing bore size, whether your building's lease permits hardware changes, and whether you want a standalone code-based lock or one that connects to a smartphone app. We walk you through all of that during the on-site consultation and install to manufacturer specification so the device functions correctly and any included warranty remains valid.
What should I do if I am locked out of my home or business right now?+
First, check for a spare key with a neighbor, building super, or family member, and confirm whether another entrance is accessible. If none of those options are available, call (929) 822-6640 — we answer 24/7 and can dispatch a mobile technician to your Bronx location immediately. Do not attempt to force or pick the lock yourself, as this frequently damages the cylinder or the door frame and can make the situation more expensive to resolve. We use non-destructive entry techniques wherever the lock condition allows, and we verify ownership before opening any door.