Rekeys & Lock Changes

A rekey is not just a convenience — it is a security reset. When a locksmith rekeys a cylinder, the internal pin stack is reconfigured so that only a brand-new key operates the lock. The hardware itself stays in place, which means your existing deadbolt, mortise lock, or door knob lock continues to function perfectly, just with a completely different key profile. This is particularly valuable after a move because it eliminates every previously cut key without the cost of replacing the entire lockset. It is also the right call after a break-in attempt, a lost key, the end of a tenancy, or any situation where key control has been compromised.

A full lock change, on the other hand, swaps out the entire lockset or cylinder assembly. Our technicians recommend this path when the existing hardware is worn, outdated, low-security grade, or simply incompatible with a master-key system you want to build. Melville properties — from the residential neighborhoods near Bethpage State Park to the office parks along the 110 corridor — span a wide range of door types and security needs, and our team is experienced with all of them, including the heavy-duty mortise lock configurations common in older commercial buildings and converted storefronts.

The mortise lock is widely regarded as one of the most robust lock formats available, and for good reason. It fits into a deep rectangular pocket cut into the door edge, giving it far greater resistance to kick-in and pry attacks than a standard cylindrical bored lock. Many Melville businesses, multi-family buildings, and older single-family homes have mortise locks already installed — but those locks are only as secure as the last person who controlled the keys. Our locksmiths carry a full inventory of mortise cylinder replacements and can rekey existing mortise assemblies on the spot, matching your new cylinders to a single master key if you manage multiple units or access points.

Mortise lock work requires a higher level of technical skill than a basic deadbolt swap because the lock body, cylinder, cam, and case all need to align precisely once the cylinder is changed. Our experienced technicians are trained specifically in mortise lock disassembly, cylinder extraction, and reassembly — and they bring the right tools to avoid scoring the door finish or stripping the set screws. If the existing mortise case is damaged or outdated, we carry replacement bodies compatible with standard door prep dimensions so you are not left waiting days for a special order.

Customers often ask how much a rekey or emergency locksmith call should cost, and the honest answer is that several factors shape the final number: the type and brand of lock involved (a basic Kwikset door knob lock rekeys differently than a high-security mortise lock or a commercial-grade Schlage), the number of cylinders being serviced, any new hardware parts needed, the time of day, and the distance our mobile unit travels to reach you. A straightforward single-cylinder rekey during daytime hours will naturally be quoted differently than a full commercial lock change completed in the middle of the night. What never changes is our commitment to transparency — before any work begins, we confirm an exact, up-front price so there are no surprises on your invoice.

We never pad quotes with vague line items, and we do not pressure you into hardware upgrades you do not need. If a rekey solves your security concern, we will tell you so. If the existing hardware is too worn to hold a reliable new pin set, we will show you exactly why a replacement makes more sense. Call (631) 301-2229 any time — day or night — and our dispatcher will gather the details of your situation so the technician arriving at your door already knows what parts to bring.

Business owners along the Melville commercial corridor face security challenges that go beyond a single front door. Access control for staff, key accountability across shifts, panic hardware compliance, and securing back-of-house entries are all part of what a qualified commercial locksmith addresses. Pro Melville Locksmiths works with businesses ranging from small professional offices to multi-tenant light industrial facilities, providing mortise lock installation, master-key system design, high-security cylinder upgrades, door knob lock replacements, and exit device servicing. If you have recently taken over a commercial space, rekeying every access point under a new master is the fastest way to ensure the previous tenant's keys no longer work — without replacing every piece of hardware.

We also handle residential properties that need commercial-grade solutions: reinforced deadbolts on attached garage doors, sliding door security pins, secondary locks on basement entries, and keypad deadbolt installation for keyless entry. Whatever the scope, our mobile technicians arrive fully equipped to assess, quote, and complete the work in one visit wherever possible. Melville property managers who oversee multiple units on the same parcel find our master-key and construction-key services especially useful for coordinating access during turnover periods.

Real estate transactions in Melville can involve a surprising number of key copies by the time the deal closes. Sellers sometimes provide keys to family members helping with the move, to painters and contractors completing repairs required by the sale, and occasionally to neighbors holding a spare for emergencies. By the time the new owner takes possession, the key history of that property is genuinely unknown. The safest assumption is that more copies exist than you are aware of, and the cleanest solution is a same-day rekey or lock change before you spend your first night in the home.

The same logic applies to renters. If you are moving into an apartment or townhouse in Melville and the landlord hands you a key without proof that the locks were rekeyed after the last tenant, you are inheriting that tenant's entire key distribution history. In many cases, landlords are open to scheduling a professional rekey — sometimes the cost can be worked into move-in arrangements — but regardless of how it is handled financially, our team can complete the service quickly and with minimal disruption to your move-in day. Call (631) 301-2229 to schedule, or reach us any hour if you need an emergency locksmith response.

Our trained, insured technicians are equipped to handle the full range of residential and commercial lock needs. Here is a specific breakdown of what we offer: residential deadbolt rekeying, mortise lock cylinder rekeying, commercial master-key system setup, construction key removal and rekeying, door knob lock rekeying, double-cylinder deadbolt replacement, mortise lock case replacement, high-security cylinder upgrades (Schlage, Kwikset, and similar brands), sliding glass door lock installation, patio door pin-lock security additions, rim cylinder rekeying, surface-mount deadbolt installation, profile cylinder replacement, keypad deadbolt installation (battery-operated, no wiring required), multi-point lock servicing on European-style doors, mail slot lock replacement, cabinet and drawer lock rekeying, padlock rekeying, gate lock installation and rekeying, mailbox lock replacement, storage unit lock installation, panic bar and exit device inspection and repair, door knob lock upgrade to lever-handle ADA-compatible hardware, re-pinning locks to accept a new master key, key duplication from existing cuts during a rekey appointment, lock-grade assessment and written security recommendations, emergency lockout response with ownership verification, broken key extraction from cylinders, lock lubrication and maintenance servicing, and commercial lock change for newly leased retail and office spaces. Every service is available 24/7, and every quote is confirmed before we begin.