Marina LOCKSMITHS
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Door Knob & Deadbolt Installation

Staten Island homeowners from Tottenville to St. George know that a door knob lock is often the first line of defense between their family and the outside world — and when that hardware fails, wears out, or simply no longer meets today's security standards, the consequences can be serious. Marina Locksmiths sends trained, insured mobile technicians directly to your door across the entire borough, no shop visit required, so you get professional door knob and deadbolt installation without rearranging your day.

Call (347) 474-0837Get a fast quote

Open 24 hours, 7 days a week · Licensed, bonded & insured

Whether you are upgrading an aging knob set on a New Dorp bungalow, adding a graded deadbolt to a rental property near Bay Street, or replacing a broken mortise lock on a commercial storefront on Forest Avenue, our team arrives fully stocked with quality hardware and the hands-on experience to get it done right — damage-free wherever the existing frame allows. We confirm an exact, up-front price before a single screw turns, and our phones are answered 24 hours a day, seven days a week.

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 Staten Island, we reach the Staten Island 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.

01

Why Your Door Knob Lock and Deadbolt Work Better Together

A standard door knob with lock provides a spring-latch mechanism that is convenient for everyday entry but was never designed to be a standalone security device. The latch bolt can be defeated with relatively simple pressure if a deadbolt is not present — a fact that experienced burglars are well aware of. A properly installed Grade 1 or Grade 2 ANSI-rated deadbolt adds a hardened steel bolt that throws a full inch into the door frame, making forced entry dramatically more difficult. Our technicians assess both the door and the frame before recommending hardware, because even the best deadbolt underperforms when the strike plate is anchored with half-inch screws into hollow trim.

For older Staten Island homes — particularly the brick rowhouses and cape cods that line the streets of Westerleigh and Castleton Corners — door frames can shift over decades, leaving gaps that weaken a lock's effectiveness. We check door alignment, strike plate seating, and the condition of the jamb before installation so the finished job holds up through every season. Think of the knob set and the deadbolt as a team: one handles convenience, the other handles security, and both need to be correctly sized, correctly backset, and correctly anchored to do their jobs.

Why Your Door Knob Lock and Deadbolt Work Better Together — Marina Locksmiths
02

Door Knob & Deadbolt Installation: Hardware Grades, Types, and What Actually Matters

Not all door knobs or deadbolts are equal, and the difference between a builder-grade knob and a properly graded lock set is measurable in real security outcomes. Our technicians work with a wide range of hardware including Schlage, Kwikset, and other ANSI-rated manufacturers, selecting the right product for the specific door type, usage frequency, and threat environment. For interior doors — a door knob with lock for bedroom privacy, for example — a Grade 3 privacy set is typically appropriate. For exterior entry doors, we recommend nothing below a Grade 2 single-cylinder deadbolt, and for high-traffic or commercial applications a Grade 1 unit is the standard.

Beyond traditional keyed hardware, we also install smart lock door knob replacements and keypad lock door knob units for homeowners who want to eliminate physical keys entirely or manage access for housekeepers, dog walkers, or family members remotely. These electronic options require careful alignment during installation to ensure the motor engages reliably in Staten Island's cold winters and humid summers — a detail that matters more than the spec sheet suggests. We also service and install the mortise lock, a format common in older multi-family buildings and commercial properties across the North Shore, where a single housing integrates the latch, deadbolt, and sometimes a cylinder into one robust unit inside the door edge. Mortise lock work is among the most skill-intensive installations we perform, and our technicians carry the chisels, lock bodies, and cylinder cores to handle it on-site.

Emergencies Don't Follow a Schedule — 24/7 Mobile Response Across Staten Island — Marina Locksmiths
03

Emergencies Don't Follow a Schedule — 24/7 Mobile Response Across Staten Island

A lock that fails at 11 p.m. on a Tuesday is not less urgent than one that fails at noon on a Saturday. Our emergency locksmith service operates around the clock precisely because security problems are indifferent to business hours. A broken door knob lock after a break-in attempt, a deadbolt that suddenly won't retract, or a rental unit that needs a re-key before a new tenant moves in tomorrow morning — these are the calls we take every day, from every corner of Staten Island including the South Shore communities of Great Kills and Annadale where response time from a shop-based service can stretch uncomfortably long. Being fully mobile means our technician is already in the vehicle with the tools and hardware; there is no waiting for a shop to open.

When you call (347) 474-0837, a live person answers — not a voicemail, not a callback queue — and we dispatch a trained technician to your address. Before any work begins, we verify ownership or occupancy of the property (a standard and legitimate step that any honest locksmith performs), confirm the scope of work, and give you an exact price. Factors that shape that price include the type and grade of lock hardware selected, whether existing prep holes need to be adjusted or a new bore is required, the time of day, and travel distance to your location. There are no hidden fees added after the fact.

Why Your Door Knob Lock and Deadbolt Work Better Together — Marina Locksmiths
04

What a Professional Mortise Lock and Door Knob Installation Actually Involves

Replacing a door knob with lock and key sounds straightforward, but a correct installation involves more steps than most homeowners expect. First, the existing hardware is removed and the door edge, face bore, and latch bore are inspected for damage, rot, or out-of-spec dimensions. If the new lock's backset or cross-bore size differs from the old hardware — common when upgrading from a builder-grade knob to a commercial-grade mortise lock — the door must be carefully prepared so the new unit seats flush and the bolt aligns with the strike. Sloppy prep leads to a lock that binds in cold weather, a latch that doesn't fully seat, or a deadbolt that the door frame slowly works loose over months of use.

For commercial properties along Victory Boulevard or multi-tenant buildings near the St. George Ferry Terminal, our commercial locksmith services extend to master-key systems, high-security cylinder upgrades, and ADA-compliant lever hardware that must pass local code requirements. A double lock door knob — meaning a knob set paired with an integrated or separate deadbolt on the same door — requires careful spacing and sometimes a custom strike plate to accommodate both throws in a single frame. Our technicians document every installation, including the key codes cut, so re-keying or future cylinder replacement is straightforward. If you have been wondering what proof you need for a locksmith to begin work, the answer is simple: government-issued ID and evidence of your right to access the property, such as a lease, deed, or utility bill — we treat this as a routine and professional step, not an accusation.

You might also want to consider whether your existing doors are candidates for a lock upgrade rather than a full replacement — in many cases we can re-key current hardware, upgrade the cylinder to a restricted-key format, or add a deadbolt to an existing knob set without touching the door finish at all. And while some visitors arrive on this page after searching for information on how to pick a door knob lock or how to pick a lock door knob, it is worth noting clearly: attempting to bypass your own lock without professional guidance risks damaging the door, the frame, and the lock body itself, and creates liability if a neighbor or building manager misinterprets the activity. The right move in any lockout situation is to check for a spare key with a trusted neighbor, try an alternate entrance you are authorized to use, and then call a professional. We handle lockouts every day — it is a routine call, not an embarrassing one. Reach us anytime at (347) 474-0837.

Emergencies Don't Follow a Schedule — 24/7 Mobile Response Across Staten Island — Marina Locksmiths

Frequently asked questions

How much should a locksmith cost in NYC for a deadbolt installation?+

There is no single flat figure because several variables shape the final quote: the grade and brand of hardware selected, whether the door needs boring or prep work to fit the new lock, the time of day the work is performed, and your location within Staten Island relative to our current dispatch point. What we commit to is an exact, confirmed price before any work begins — so there are no surprises on the invoice. Call (347) 474-0837 and describe your situation for an accurate estimate.

What proof do you need for a locksmith before they start work?+

Any honest, professional locksmith will ask for government-issued photo identification and reasonable evidence that you have the right to access the property — a lease agreement, a deed, a utility bill in your name, or similar documentation. This is a standard step that protects both you and the technician, and we treat it as a routine part of every service call, not something to be embarrassed about. It is one of the clearest signs that you are dealing with a legitimate operation.

What are common reasons to call a locksmith for door knob and deadbolt work?+

The most frequent calls we receive involve: a lock that has become stiff, sticky, or difficult to turn after years of use; a door knob lock that was damaged during a break-in or attempted break-in; moving into a new home or apartment and wanting the cylinders re-keyed so previous keyholders no longer have access; upgrading from a low-grade builder knob to a deadbolt-equipped entry set; installing a smart lock or keypad lock door knob; and replacing a failed mortise lock in an older multi-family or commercial building. Tenant turnover in rental properties across Staten Island is another consistent driver — landlords often call us between leases.

What is a locksmith call-out fee, and does Marina Locksmiths charge one?+

A call-out fee, sometimes called a service call fee or dispatch fee, is a charge some locksmiths apply just for sending a technician to your location, separate from the cost of the work itself. Pricing structures vary across providers. At Marina Locksmiths we provide a clear, all-in quote before the technician begins — we walk you through what is included so you know exactly what you are agreeing to. The factors that influence the total are the lock hardware type, any door prep required, time of day, and distance traveled.

Who is the cheapest locksmith, and should price be my main criteria?+

Searching for the cheapest locksmith is understandable, but it is worth knowing that extremely low quotes are sometimes followed by large add-on charges once a technician is already at your door — a practice sometimes called bait-and-switch pricing that the New York State Attorney General has warned consumers about. A more useful question is: who gives me a confirmed, honest price before they start? That is the standard we hold ourselves to. Our pricing reflects real labor, real hardware, and real accountability — and we confirm it up front, every time.

Can I install a smart lock door knob or keypad lock myself instead of calling a locksmith?+

Manufacturers market many smart lock and keypad lock door knob products as DIY-friendly, and some installations do go smoothly for handy homeowners. However, problems arise when the existing door prep does not match the new hardware's dimensions, when the door is misaligned (common in older Staten Island homes where frames have settled), or when the electronic unit requires a deadbolt that needs a new bore. A misaligned smart lock wears out its motor quickly and may fail to lock or unlock reliably. Having a trained technician handle the installation — and test it under load — ensures the warranty remains valid and the device performs as intended from day one.

Locked out or need a lock fixed? We are on the way.

(347) 474-0837