Home Rekeying & Lock Changes

Most Philadelphia homeowners underestimate how many people hold a copy of their key at the moment they move in. Landlords, previous owners, contractors, pet sitters, and neighbors can all have duplicates floating around the city — duplicates you have no way to track or recover. Rekeying neutralizes every one of those copies at once without requiring you to replace the entire lock body. A trained technician disassembles the cylinder, swaps the internal pin tumblers to a new configuration, and cuts fresh keys to match. The lock looks identical from the outside but is effectively brand new from a security standpoint.

A full lock change goes a step further and is the right call when the existing hardware is worn, outdated, or simply not up to the security standard you want. Older Philadelphia row homes frequently have aging mortise lock assemblies — a deep, rectangular lock body set into the door edge — that may have been installed decades ago and have never been serviced. Our skilled technicians work with mortise lock systems daily, sourcing quality replacement hardware from trusted manufacturers like Schlage and Kwikset and fitting it to your door frame with precision. If the door or frame has minor damage from previous forced entry, we document it and advise you on the safest path forward.

A1 Philadelphia Locksmith handles the full spectrum of residential lock work, and every service is delivered by experienced mobile technicians who carry a wide inventory of parts in their vans. That means most jobs — including same-day mortise lock replacements, door knob lock installations, deadbolt upgrades, and smart lock conversions — are completed in a single visit without a return trip for parts. Here is a representative list of what our residential team handles: cylinder rekeying for single-family homes, cylinder rekeying for multi-unit rentals, mortise lock disassembly and rekey, mortise lock full replacement, Schlage deadbolt installation, Kwikset deadbolt installation, high-security deadbolt upgrades, door knob lock replacement, door knob lock rekey, lever handle lock installation, smart lock installation and programming, keypad entry lock setup, master key system design for landlords, duplicate key cutting on-site, broken key extraction from cylinder, damaged cylinder replacement, door lock realignment after frame settling, sliding door lock repair and replacement, storm door lock installation, chain lock and door guard installation, peephole installation and upgrade, garage entry door rekeying, basement door deadbolt installation, patio door pin lock installation, and full re-keying of all exterior doors in a single visit so every lock in your home operates on one key.

Philadelphia's housing stock is one of the most architecturally diverse in the country, and our technicians are familiar with the quirks that come with it — antique mortise lock bodies in Society Hill townhouses, non-standard door thicknesses in Fishtown warehouse conversions, and double-cylinder deadbolts common in South Philly row homes that need careful consideration for fire-egress safety. We advise on all of these situations as part of the service, not as an add-on.

Pricing is one of the most common questions we receive, and we take it seriously. Rather than publishing ranges that may not reflect your specific situation, we factor several variables into every quote: the type of lock hardware involved (a standard door knob lock rekey is simpler than a full mortise lock overhaul), the number of locks being serviced in a single visit, whether any parts need to be sourced from our inventory or ordered, the time of day the call comes in, and travel distance to your Philadelphia address. Emergency locksmith calls that come in overnight or on a holiday reflect the real cost of having a trained technician available around the clock, seven days a week — and we are always transparent about that before work starts.

Our commitment is simple: we confirm the exact price with you before a single tool comes out of the bag. You are never handed an unexpected invoice at the end of the job. If you have questions about what will go into your quote before scheduling, call 215-267-1379 — our team answers 24/7 and can walk you through the factors that will apply to your specific situation.

Some situations cannot wait for a scheduled appointment. If you have just realized your keys are gone after riding the Market-Frankford Line, returned home to a door that has been tampered with, or moved into a new rental in West Philadelphia and discovered the lock is broken, these are genuine emergencies that put your safety at risk. A1 Philadelphia Locksmith operates as a 24/7 emergency locksmith service precisely because security issues do not follow business hours. Our mobile technicians can reach most Philadelphia neighborhoods quickly, assess the hardware on arrival, and secure your home before you go to sleep.

For any lockout situation, the safest and most effective step is always to call a qualified professional rather than attempting to force or bypass the lock yourself — techniques that can cause expensive damage to the door, the frame, and the lock body. Our technicians are trained to open doors through legitimate, damage-free methods wherever the hardware permits, and we verify ownership before beginning any work. If you are locked out right now, call 215-267-1379 and we will dispatch a technician to you immediately.