Can a Locksmith Make a New Key From a Lock?

The short answer is yes, and the method is more precise than most people imagine. When you've lost every copy of a key, a skilled locksmith uses a technique called "impressioning" or, more commonly, lock decoding. With impressioning, a blank key is inserted into the lock and manipulated until the lock's internal pins leave tiny marks on the blank. The locksmith then files or cuts the blank to match those marks exactly — repeating the process until the key turns cleanly. A faster method used on many modern locks is direct decoding: the locksmith reads the height of each pin or wafer inside the lock using a specialized tool, records those measurements as a key code, and cuts the key on a mobile code-cutting machine right at your door. No guessing. No drilling. The lock stays intact and fully functional.

This is very different from lock picking — which is a bypass technique, not a key-making one, and not something we'd walk you through for obvious safety reasons. Key-from-lock service is a legitimate, professional process that requires ownership verification before we begin (more on that below). The result is a precise, usable key that works as smoothly as the original factory cut. If your home has a mortise lock — the rectangular body mortise lock common on older Edison-area homes and on many commercial properties along Plainfield Avenue — the decoding process accounts for the more complex lever or cylinder profile inside, and our team carries blanks for a wide range of mortise lock cylinders specifically for this reason.

Not all locks are created equal, and the key-making process varies by the hardware involved. A standard door knob lock on a residential interior door is typically a simple pin-tumbler cylinder — quick to decode and cut. A deadbolt is similar in mechanism but heavier in build. A mortise lock, by contrast, is a full-body lock unit set into a pocket (the "mortise") carved into the door edge. Mortise locks are extremely common on commercial properties and on older homes throughout Edison — if your front door has a large rectangular faceplate with a lever handle and a separate deadbolt latch built into the same unit, you have a mortise lock. These locks offer excellent security, but when the key is lost, they require a locksmith who specifically carries the right cylinder blanks and decoder tools for mortise lock profiles.

Beyond residential hardware, our mobile team handles: house door knob locks, single and double-cylinder deadbolts, mortise locks (residential and commercial), sliding door locks, padlocks, cabinet and drawer locks, high-security cylinders (Schlage, Kwikset, and comparable brands), transponder and laser-cut automotive keys, push-to-start fobs, motorcycle ignition keys, RV and camper locks, and master-keyed commercial systems. If you're a business owner managing a commercial property — a retail space on Woodbridge Avenue, a warehouse, or a multi-suite office — our commercial locksmith services extend to master key systems, keypad access upgrades, and rekeying entire facilities so one key works every door you need it to. Need a single fresh key from a single lock? We handle that too, on the same call, same visit.

A question we hear often: what proof do I need for a locksmith before they'll make me a key or let me into my own property? The answer is simple and exists entirely to protect you. Before any key-making or entry service, our technicians verify that you're the rightful owner or authorized occupant of the property or vehicle. For a home, that typically means a photo ID matching the address, a lease agreement, a utility bill, or a combination of these. For a vehicle, a driver's license and vehicle registration — both in your name — are standard. For a commercial property, a business ID, lease, or authorization letter from the property owner works.

This step might feel like an inconvenience when you're stressed and locked out at 11 PM on a Tuesday, but it's a genuinely important safeguard — and any professional locksmith should require it without exception. If you ever encounter a locksmith who skips this step entirely and wants to start working immediately with no questions asked, that's a red flag. Our team makes the verification process quick and respectful; we've handled hundreds of these situations across Edison, and we understand the urgency without cutting corners on safety. A local locksmith should feel easy to call — and part of that ease comes from knowing the person showing up at your door has a clear, ethical process.

One of the most-searched questions we see is: how much does a locksmith cost in NJ? Or more bluntly: how much is the cheapest locksmith? We'll give you an honest answer on both. We don't publish flat rates here because the actual cost of a locksmith job depends on several real variables — and quoting a number without knowing those variables would be misleading.

The factors that shape your final quote include: the type of lock or vehicle (a basic door knob lock costs less to work on than a high-security mortise lock or a transponder-cut automotive key), the time of day (emergency locksmith service at 2 AM involves different logistics than a daytime appointment), your location and how far our nearest technician needs to travel, the specific parts required (some key blanks and cylinders are significantly more complex to source), and whether additional services are needed — like rekeying a lock after the key is cut, or replacing worn hardware. How much should an emergency locksmith cost? How much should a locksmith cost per hour? These are fair questions, and the truthful answer is that a trustworthy locksmith will give you an exact, confirmed price before any work begins — not after. That's our commitment on every call: you know the full price upfront, with no surprise additions when the job is done. If you'd like a quote right now, call (732) 518-3692 and we'll give you a clear answer based on your actual situation.

Once you have a new key in hand, there's a second decision worth thinking about: should you also rekey the lock, or is a fresh-cut key enough? Understanding the difference helps you make a smarter security choice. Making a new key from a lock means creating a key to fit the existing lock configuration — the pins inside stay exactly as they are. If you've simply lost a key with no reason to suspect it was stolen or copied, a new key may be all you need.

Rekeying a lock, on the other hand, means changing the internal pin configuration of the cylinder so that all previously cut keys — including any lost ones — no longer work. The lock body stays in place; only the pins change, and a new key is cut to match the new configuration. This is the smarter move if your key was stolen, if you've recently moved into a new home (you never truly know how many copies of that original key exist), or if you're wondering how to rekey a lock to match an existing key on another door for convenience. Rekeying is also far more cost-effective than full lock replacement when the hardware itself is in good condition. If you're asking how do you rekey a lock, or what does it mean to rekey a lock, the practical takeaway is this: it's a professional-level job that involves removing the cylinder, replacing the driver pins, and cutting a matching key — typically completed in under 30 minutes per lock by an experienced technician. We can rekey individual locks or an entire home's worth in a single visit, and we can rekey a lock so that every door responds to one master key if that's what your setup needs.

Losing your keys doesn't wait for business hours, and neither do we. Edison NJ Locksmith operates as a fully mobile, 24/7 emergency locksmith service — our technicians drive to you fully equipped, carrying code-cutting machines, decoder tools, a broad inventory of key blanks, and the hardware needed for most residential and commercial lock services on a single visit. Whether you're locked out of your home near the Raritan Center area at midnight or you've just discovered a broken lock on your storefront before an early open, we move quickly because we understand the situation you're in.

Ensuring your peace of mind is more than a phrase to us — it means arriving prepared, working cleanly, explaining exactly what we're doing, and leaving you with a lock and key setup that's more secure than the one you started with. We serve Edison and the surrounding communities including Metuchen, Woodbridge, Piscataway, South Plainfield, and the broader Middlesex County area. Our services span residential, automotive, and commercial locksmith needs: key-from-lock cutting, mortise lock service, rekeying, lock replacement, car key programming, lockout assistance, high-security lock upgrades, access control, and master key systems — 25+ distinct services handled by our experienced mobile team, on your schedule, at your location. When you're ready, call (732) 518-3692 — we answer 24 hours a day, 7 days a week, with no answering service and no callback runaround.

Here's a specific look at what our team handles on a daily basis across the Edison area: 1. Key cutting from lock (no original needed) 2. Residential lock rekeying 3. Commercial lock rekeying 4. Mortise lock service, repair, and replacement 5. Door knob lock installation and replacement 6. Single-cylinder deadbolt installation 7. Double-cylinder deadbolt installation 8. High-security cylinder upgrades (Schlage, Kwikset, and comparable) 9. Master key system design and installation 10. Residential lockout service 11. Commercial lockout service 12. Automotive lockout service 13. Transponder key programming 14. Laser-cut (high-security) automotive key cutting 15. Push-to-start proximity fob programming 16. Broken key extraction (lock or ignition) 17. Lock repair (loose, stiff, or damaged hardware) 18. Sliding door lock installation and replacement 19. Padlock keying and replacement 20. Cabinet and drawer lock service 21. Mailbox lock replacement 22. Garage side door lock service 23. Keypad and electronic lock installation 24. Access control system installation (commercial) 25. Safe opening and combination changes 26. RV and camper lock service 27. Motorcycle ignition key cutting 28. Rekeying a lock to match an existing key (key-alike service) 29. Lock hardware consultation and security assessment Every service comes with upfront pricing confirmed before work begins.