Rekeying & Lock Changes

A lock rekey means the internal pin tumblings of your existing lock cylinder are reconfigured so that old keys no longer work — only the new keys cut to the fresh configuration will operate it. A full lock change means the entire lockset or cylinder is swapped for new hardware. Both services accomplish the same core goal: breaking the chain of key possession so you truly control who can enter. This matters most at three specific moments — after purchasing or renting a property, after a tenant or roommate moves out, and after a key is lost or stolen. In Scarsdale's competitive rental market, where properties along Post Road and Christie Place turn over frequently, landlords who skip this step after every tenancy create a compounding security gap that grows with every new resident.

Our trained technicians carry a wide inventory of cylinders, including Schlage and Kwikset components, and can rekey most standard door knob lock and deadbolt combinations on the spot during a single visit. For older Scarsdale homes — many of which still feature original mortise lock bodies installed when the houses were built in the early twentieth century — we specifically stock mortise lock cylinders and can rekey or replace the cylinder without disturbing the antique lock body itself. Preserving that original hardware matters to homeowners in Scarsdale's historic districts, and our team knows how to do it cleanly and without unnecessary damage to doors or frames.

The mortise lock is the rectangular pocket-style lockset recessed directly into the door edge, common in homes and commercial buildings constructed before the 1960s. It is mechanically more complex than a cylindrical door knob lock, and rekeying or servicing one incorrectly can damage the case, misalign the cam, or leave the door unable to latch properly. Scarsdale has a large stock of pre-war and early mid-century housing — Tudor revivals in Fox Meadow, colonial revivals near Crane Road, and mixed commercial-residential buildings in the village center — all of which frequently retain original or near-original mortise lock hardware. Treating these locks as if they were standard modern cylindrical hardware is a common mistake that leads to costly door repairs.

Our technicians are trained specifically on mortise lock anatomy: removing the cylinder without stripping the set screw, rekeying the plug to a new key profile, and reinstalling the cylinder so the cam engages the lock case correctly. When a mortise lock cylinder is beyond rekeying due to wear, corrosion, or a broken plug, we carry replacement cylinders that fit common mortise lock case dimensions so the original body stays intact. If you are a commercial locksmith client managing an older Scarsdale retail or office space on Scarsdale Avenue and you have never had your mortise hardware serviced, a rekey visit is also an excellent time to have us inspect the case for internal wear before a more serious failure occurs.

A lost key is not just an inconvenience — it is an open question about who found it and whether they know which door it opens. In a close-knit community like Scarsdale, where neighbors know neighbors and addresses are easy to connect to faces, a lost key on a recognizable keychain is a meaningful security risk. Our emergency locksmith service operates 24 hours a day, seven days a week, including holidays, because security concerns do not follow business hours. If you lose a key at night after the Metro-North ride home, or a tenant returns their keys but you suspect duplicates were made, you do not need to wait until Monday morning to resolve it.

When you call (914) 344-5259, a live team member answers — not a voicemail or an answering service — and dispatches a trained, insured technician to your location. We serve all of Scarsdale's neighborhoods, from the estate sections near Heathcote to the denser residential blocks near the village core, and our mobile units carry the tools and parts to complete most rekey and lock change jobs in a single visit. For emergency locksmith calls after hours or on weekends, the time of day is one of the factors that influences your final quoted price — along with the type of lock hardware, any parts needed, and the travel distance to your property. We tell you the exact price before we start, every time.

Sometimes rekeying is not the right answer. If a door knob lock or deadbolt is worn, has a damaged keyway, shows signs of tampering, or is a low-security grade that you simply want to upgrade, a full lock change is the better investment. We install a wide range of residential and commercial grade deadbolts, door knob lock sets, and mortise lock cylinders, and we can advise on which ANSI security grade makes sense for your specific door and usage pattern. For residential clients, upgrading from a builder-grade door knob lock to a Grade 1 deadbolt during a rekey visit is a straightforward add-on that significantly raises the forced-entry resistance of the door.

For commercial locksmith clients — property managers, small business owners, and office tenants on Scarsdale Avenue or in the commercial blocks off East Parkway Drive — we also handle master key system rekeying, high-security cylinder installation, and access control for buildings where multiple units or staff members need differentiated key access. If your business has experienced employee turnover and you are uncertain how many key copies are in circulation, a master rekey resets the entire system at once so every prior key becomes inoperable simultaneously. Call (914) 344-5259 to discuss your property's specific layout and we will recommend the most efficient and cost-effective path forward — confirmed in writing before any work begins.

Below is a straightforward list of what our mobile team handles on every call to Scarsdale and the surrounding area: residential deadbolt rekeying, residential door knob lock rekeying, mortise lock cylinder rekeying, mortise lock cylinder replacement, full deadbolt replacement and installation, door knob lock set replacement, master key system rekeying for residential buildings, master key system rekeying for commercial properties, high-security cylinder installation (Schlage B-series and equivalents), Grade 1 deadbolt upgrade installation, antique mortise lock body inspection and servicing, lock change after tenant move-out, lock change after key loss or theft, emergency locksmith lockout response (24/7), commercial storefront lock rekeying, office suite lock rekeying after staff change, mailbox lock rekeying and replacement, padlock rekeying and replacement, garage entry door lock rekeying, sliding door lock inspection and upgrade, window lock inspection and installation, lock change following a break-in or attempted break-in, duplicate key cutting on-site, lock hardware consultation and security assessment, and lock change coordination for multi-unit buildings requiring same-day turnover on multiple units.