Deadbolt Installation

A single-cylinder deadbolt is operated by a key on the exterior and a thumb-turn on the interior — the most common setup in New York City apartments. It lets you exit quickly without a key, which matters in multi-unit buildings where stairwells are the only egress. A double-cylinder deadbolt requires a key on both sides and is typically chosen for doors with glass panels or sidelights where a burglar could otherwise reach through and thumb-turn the lock open. Both types are available in Grade 1 (highest residential security rating) hardware from manufacturers like Schlage, Kwikset, and Medeco, and our technicians will walk you through the trade-offs before we drill a single hole.

NYC building codes and fire safety rules add a real layer of complexity here that a general handyman may overlook. Double-cylinder locks, for example, are restricted or require specific configurations in certain occupancy types under the NYC Fire Code because they can impede emergency egress. Our experienced technicians are familiar with those local requirements and will never install hardware that puts you out of compliance. If your existing door prep does not match standard 2-1/8-inch bore dimensions — common in older pre-war buildings throughout the East Side — we carry the tooling to bore or adapt on the spot.

Jimmy-proof deadbolt installation is arguably the most requested service we perform in New York City apartment buildings, and for good reason. Unlike a standard deadbolt that throws a bolt horizontally into the door frame, a jimmy-proof deadbolt — also called a vertical deadbolt or rim lock — uses interlocking vertical bolts that drop into a strike plate mounted on the door frame. The design makes it nearly impossible to pry the door open even with significant force applied to the gap between door and frame, a technique that is surprisingly effective against standard horizontal bolts in aging NYC door frames.

These locks are surface-mounted, which means they do not require a through-bore into the door body — a significant advantage in buildings with thin or hollow doors, or in cases where the landlord restricts modifications to the door slab itself. Brands like Segal and Medeco make high-security jimmy-proof assemblies that pair a solid steel housing with pick-resistant cylinders. Our technicians align the interlocking bolt and strike plate to precise tolerances, because even a few millimeters of misalignment will cause binding over time as NYC's seasonal humidity causes door frames to expand and contract.

The mortise lock is the gold standard of door security in New York City's older building stock, and it remains the most sophisticated lock mechanism our team installs. A mortise lock is recessed into a precisely cut pocket in the door edge, combining a latch bolt, deadbolt, and often a chain or auxiliary function in a single cartridge. You'll find them throughout pre-war buildings on the Upper East and Upper West sides, in commercial storefronts along Third Avenue, and in the landmarked brownstones of Murray Hill. Replacing or upgrading a mortise lock requires exacting measurement and skilled fitting — the mortise pocket must be the right depth and width, and the faceplate must sit flush with the door edge for the mechanism to operate smoothly.

For commercial clients — retail, office suites, medical practices — we install heavy-duty mortise lock bodies with interchangeable cores, which allow a building manager to rekey individual doors without replacing the entire lock body. This is a cost-efficient security practice for businesses that experience regular staff turnover. Whether you need a straightforward residential deadbolt installation or a multi-point mortise system on a commercial steel door, our mobile team carries the parts and equipment to handle the job completely. Call (646) 863-8526 any time — our technicians answer around the clock, every day of the year.

One of the most common questions we hear is some version of 'How much does an NYC locksmith cost?' or 'What is the average call-out fee for a locksmith?' The honest answer is that deadbolt installation pricing depends on several real variables, and any company quoting a flat rate before seeing the door and hardware is estimating blindly. The factors that shape your final price include the type and grade of lock being installed, whether the door requires new boring or only fits a standard prep, the specific hardware brand and cylinder you choose, the time of day the work is performed, and the travel distance to your location.

Emergency locksmith calls — meaning same-night or immediate-response visits — reflect the cost of having a fully equipped technician available around the clock versus a scheduled daytime appointment. That is true across any trade in New York City. We are transparent about this: our technician will confirm an exact price before touching your door, and that number does not change once work begins. There are no hidden fees for drilling, for hardware that turns out to be more involved than expected, or for after-hours travel. If the scope changes for any reason, we discuss it with you first. Our goal is that you know exactly what you're paying and why — that clarity is part of the service.

New York City is one of the most densely populated urban environments in the world, and door security here carries stakes that simply do not exist in suburban settings. A compromised deadbolt in a Kips Bay apartment building affects not just one unit but potentially the entire building's shared entrance points. Our technicians understand the layered security reality of NYC — intercom systems, key-fob building entries, elevator lobbies, and the individual apartment door all function as a chain, and the deadbolt is the last link. We take that seriously on every installation.

Kips Bay Locksmith is a fully mobile operation, which means our insured technicians come to your address fully equipped — no drop-off, no waiting for parts to be ordered. We serve residential tenants, co-op and condo owners, property managers overseeing multi-unit buildings, and commercial tenants throughout Manhattan and the broader New York area. Our team has worked on everything from a standard door knob lock replacement on a studio apartment to a full commercial locksmith hardware overhaul on a multi-suite office floor. Whatever the door, whatever the lock, we approach every job with the same standard: do it right, do it safely, and leave the door operating better than we found it. For non-emergency scheduling or immediate assistance, reach us at (646) 863-8526 — we answer 24/7, every day including weekends and holidays.

Our mobile locksmith team offers the following specific services for residential and commercial customers across New York City: single-cylinder deadbolt installation on standard apartment doors; double-cylinder deadbolt installation on glass-panel or sidelight doors; jimmy-proof vertical deadbolt installation for rental apartments; mortise lock body replacement and upgrade; mortise lock cylinder rekey without full body removal; Grade 1 Schlage deadbolt installation and alignment; Grade 1 Kwikset SmartKey deadbolt installation and programming; Medeco high-security cylinder installation into existing lock bodies; deadbolt installation on steel apartment entry doors; deadbolt installation on wooden pre-war door slabs; door-bore drilling for non-prepped doors; strike plate reinforcement and anti-kick plate installation; door frame repair and reinforcement around existing strike plates; deadbolt installation paired with door knob lock replacement as a combined service; chain guard and door limiter installation; surface-mounted rim lock and vertical bolt installation; commercial grade mortise lock installation for retail and office storefronts; master key system setup across multi-unit residential buildings; interchangeable core mortise lock installation for commercial property managers; emergency deadbolt replacement after forced entry or break-in; broken key extraction from deadbolt cylinder before new installation; rekeying new deadbolts to match existing building keys; smart deadbolt installation and initial pairing for keypad or app-based entry; door hardware alignment and adjustment for binding or sticking deadbolts; and full lock change service following tenant turnover or lost-key situations in rental units.