Door Knob & Deadbolt Installation

The standard door knob with lock that ships pre-installed in most Brooklyn apartment doors and rental buildings is a Grade 3 residential unit — the lowest security tier recognized by the ANSI/BHMA grading system. These knobs are designed for cost efficiency, not resistance. Our technicians routinely replace them with Grade 1 or Grade 2 knobs from trusted hardware lines, or pair them with a deadbolt to create a two-point locking system that significantly raises the effort required for forced entry. For interior privacy applications — a door knob with lock for a bedroom, home office, or bathroom — we match the function class to the actual use case, so you are not over-engineering a bedroom door or under-securing a home office that holds sensitive equipment.

For exterior doors, we often recommend moving away from a knob-only configuration entirely. A lock door knob on an exterior door without a deadbolt above it is vulnerable to a technique called latch shimming, where the angled latch bolt is manipulated through the door gap. Pairing it with a properly installed single- or double-cylinder deadbolt — or upgrading the entire prep to accept a mortise lock — closes that vulnerability. Our team evaluates your door thickness, the condition of the strike plate, and the door frame integrity before recommending anything, because the strongest lock on a weak frame is still a weak system. We perform damage-free installation wherever the door prep and frame allow it, preserving the door's finish and structural integrity.

A mortise lock is a fundamentally different piece of hardware from a standard cylindrical knob or deadbolt. Instead of drilling a small hole through the door face, a mortise pocket is chiseled into the door's edge to accept a self-contained lock body that typically combines a latch, a deadbolt, and sometimes a secondary locking function into one unit. The result is a lock that distributes force across a much larger portion of the door's mass, making it far more resistant to kick-in attacks. Mortise lock installation is a core service at 5th Ave Locksmith Brooklyn, and it is particularly well-suited to the older solid-wood doors found throughout historic Brooklyn neighborhoods like Brooklyn Heights, Cobble Hill, and Prospect Park South, where the door stock is thick enough to accept a full-depth mortise pocket without compromising the door's structure.

The installation process requires precision. Our technicians measure the backset, the door thickness, and the existing prep, then use professional-grade chiseling and drilling equipment to cut the mortise pocket to exact tolerances. A mortise lock installed with even a small misalignment will bind, wear prematurely, or fail to deadlock reliably. We also upgrade the strike plate to a heavy-gauge, multi-screw box strike wherever the door frame allows, because a box strike anchored with 3-inch screws into the door frame stud resists kick-in forces that would split a standard lip strike in seconds. If you have been considering this upgrade, call 718-715-1637 — we will assess your door on-site and confirm exactly what the job involves before any work begins.

The smart lock door knob and keypad lock door knob categories have matured significantly. Early smart locks were notorious for Bluetooth vulnerabilities and flimsy back plates, but current-generation units from established hardware manufacturers have largely addressed those issues — provided they are installed correctly and paired with a solid door prep. Our technicians install smart and keypad knob sets on both new and existing door preps, and we always evaluate whether the door's existing bore pattern is compatible or whether an adapter plate is needed. We also assess the door's overall security posture: a smart lock on a door with a hollow core or a failing frame is a cosmetic upgrade, not a security one.

A double lock door knob configuration — where both a keyed knob and a deadbolt are operated independently — remains one of the most practical everyday setups for Brooklyn homeowners who want redundancy without going fully electronic. For those who do want keyless entry, a keypad lock door knob or a smart lock that retains a physical key override gives you the convenience of code entry without losing the backup of a traditional key. We carry compatible hardware for most standard door preps and can advise on which system fits your door, your household routine, and your building's requirements. All quoted pricing is confirmed up front before we touch anything — the final number reflects factors like the specific lock grade and model, whether a door prep modification is needed, the time of the service call, and travel distance to your location in Brooklyn.

A lockout at a Flatbush walk-up at 2 a.m. or a broken door knob lock discovered on a Sunday evening before a work week are exactly the situations 5th Ave Locksmith Brooklyn is built for. As a 24/7 mobile emergency locksmith, we dispatch a trained technician to your location around the clock — there is no after-hours voicemail, no next-morning callback window. Questions about how much a locksmith costs in Brooklyn, how much locksmiths charge on average, or how much an emergency locksmith costs near you are completely reasonable, and we take them seriously. Our answer is always the same: pricing is not a flat universal number because the job variables are real. Lock grade, whether a door prep modification is required, the time of day, and the distance our technician travels all factor into the final quote. What we commit to is this — you receive an exact, confirmed price before any work begins, with no surprise charges after the job is done.

Homeowners sometimes ask who an affordable locksmith in Brooklyn is, or who the cheapest locksmith is — and we understand why. But focusing only on the lowest number often leads to a second service call when cut-rate hardware fails or an improperly set deadbolt damages the door frame. Our approach is to give you an honest assessment of what your door actually needs, quote it transparently, and do it right the first time with hardware that will perform for years. For non-emergency door knob and deadbolt installation projects, same-day appointments are typically available across Brooklyn. For true emergencies — lockouts, broken locks, damaged door preps — we are on the way the moment you call 718-715-1637.

5th Ave Locksmith Brooklyn handles the complete spectrum of residential and commercial door security hardware. Our services include: door knob lock installation and replacement, deadbolt installation (single-cylinder and double-cylinder), mortise lock installation and repair, high-security deadbolt upgrades, keypad lock door knob installation, smart lock door knob installation and pairing, door knob with lock and key rekeying, master key system setup for multi-unit Brooklyn buildings, lock rekeying after a tenant change or key loss, broken key extraction from knob cylinders and deadbolt cores, door knob spindle and latch repair, strike plate reinforcement and upgrade, door frame repair after forced entry, commercial-grade cylindrical lock installation, commercial locksmith services for storefronts and office suites, panic bar and exit device installation, access control keypad wiring and installation, high-security cylinder upgrades (including bump-resistant and pick-resistant cores), lock rekey for new homeowners, interior privacy lock installation for bedrooms and bathrooms, door hinge reinforcement, mail slot and auxiliary lock installation, padlock and hasp installation for storage areas, garage side-door lock installation, intercom-integrated electric strike installation, and safe lock service for residential and small-business safes. If your situation involves a door knob, a deadbolt, a mortise lock, or any keyed or electronic access point, we handle it — mobile, insured, and available around the clock.

Searches like how to pick a door knob lock or how to pick a lock door knob spike whenever someone is locked out and looking for a fast DIY answer. We understand the frustration, but it is worth being direct: attempting to pick or bypass your own lock without the right tools and training almost always results in a damaged cylinder, a stuck plug, or a broken key — turning a simple lockout into a more expensive lock replacement. The legitimate steps when you are locked out are to check for a spare key with a trusted neighbor or family member, verify whether a secondary entrance is accessible, and if neither resolves the situation, call a professional who can verify your identity and residency before opening the door without damage. We carry a range of non-destructive entry tools specifically to avoid drilling whenever possible, and we always confirm ownership before proceeding. If you are concerned about your lock's vulnerability to picking or bumping, the right answer is a high-security cylinder upgrade — not a DIY experiment that could leave your door unsecured. Call 718-715-1637 any time for advice or an on-site assessment.