Deadbolt Installation

Most NYC apartment doors fall into one of two categories: those with a standard cylindrical bore ready for a single-cylinder deadbolt, and those with a full mortise lock pocket already routed into the edge of the door. Brownstones and pre-war buildings almost universally use the mortise lock format — a rectangular steel case that slides into the door's edge and provides both the latch and the deadbolt throw in a single unit. Our technicians work with both setups daily. For standard bore doors, we install quality single-cylinder and double-cylinder deadbolts from trusted hardware lines including Schlage and Kwikset. For doors with existing mortise cutouts, we source the right replacement mortise lock body, rekey it to your new keys, and test the throw alignment before we leave.

One of the most requested upgrades we handle in NYC buildings is the jimmy proof deadbolt installation. Unlike a standard deadbolt that throws a bolt horizontally into a strike plate, a jimmy proof deadbolt — also called a rim lock or vertical deadbolt — mounts on the surface of the door and interlocks with a strike plate mounted to the door frame. The interlocking design makes it extremely resistant to the door-spreading pry attacks that are a real concern in older NYC buildings with softer wood door frames. We install these regularly on apartment doors throughout Manhattan and the outer boroughs, and they are fully NYC Housing Maintenance Code compliant.

The mortise lock is the gold standard for New York City door security, and for good reason. A properly fitted mortise lock engages the door's full thickness, distributes force across a larger surface area, and is significantly harder to defeat with kick-in or pry attacks compared to a simple cylindrical deadbolt retrofit. Our technicians carry a working inventory of mortise lock bodies in common NYC cutout sizes, along with trim sets, cylinders, and escutcheon plates in finishes that match your existing door hardware. We also handle trim-only replacements when the internal lock body is sound but the exterior cylinder or rose plate has worn out.

Beyond mortise and rim locks, our deadbolt installation service covers a wide range of hardware types to fit every door style and security requirement: single-cylinder deadbolts, double-cylinder deadbolts (keyed on both sides), keypad and smart deadbolts, Grade 1 commercial-rated deadbolts, high-security cylinders (including Medeco and Mul-T-Lock compatible bodies), surface-mounted rim locks, vertical bolt rim deadbolts, door reinforcement kits, strike plate upgrades with 3-inch screws, wrap-around door reinforcement plates, multi-point locking systems, door chain guards, door viewers and wide-angle peepholes, sliding door and gate locks, interior privacy deadbolts, padlock hasps, door bar locks, cabinet and storage locks, mailbox lock replacement, building entry intercom lock cylinders, vestibule door locks, steel door frame repair and reinforcement, lock rekeying after new deadbolt installation, and master key system setup for landlords managing multiple units.

New York doesn't slow down, and neither do we. If your door lock has been compromised after a break-in attempt, if your deadbolt failed in the middle of the night, or if you simply need a new lock installed before you head out for work in the morning, we are available around the clock. Our emergency locksmith response covers all five boroughs — Manhattan, Brooklyn, Queens, The Bronx, and Staten Island — with mobile technicians already on the road throughout the city. There's no after-hours gate to get through, just a real person when you call 646-793-9435.

Same-day deadbolt service is standard for us, not an upsell. When you call, we confirm the door type, current lock configuration, and the hardware you want (or we can advise based on your door). We give you an exact, confirmed price before any work begins — no surprise charges at the end of the job. Factors that go into your quote include the type of lock hardware being installed, whether any door prep work is needed (boring, chiseling, frame reinforcement), the time of day, and travel distance to your address. We never begin work until you have agreed to that confirmed number.

West End Ave Locksmith NYC is a 24/7 mobile locksmith operation built specifically for the realities of New York City door hardware. We do not operate out of a single fixed shop and ask you to bring your door to us — we come to you, with the tools and parts to handle the job on site. Our technicians are trained and experienced across the full range of residential, commercial locksmith, and emergency locksmith work that New York buildings demand. Every technician on our team is insured, and we carry professional liability coverage so that both you and your property are protected throughout the job.

We are familiar with the specific door hardware challenges that show up in NYC buildings — the 1-3/4 inch thick steel-clad doors common in newer Manhattan high-rises, the 1-3/8 inch solid wood doors in century-old brownstones along West End Avenue itself, the non-standard mortise cutouts in buildings that predate modern lock standardization, and the door knob lock and deadbolt combinations that many co-op buildings require for insurance compliance. That hands-on, street-level familiarity is what separates a technician who knows New York from one who is simply reading a job ticket. New Yorkers trust us because we show up, we know the hardware, and we get it right the first time.