Can Locks Be Rekeyed Without Originals?
If you just moved into a home, lost a key, or took over a commercial space with missing copies, one question comes up fast: can locks be rekeyed without originals? In many cases, yes. A professional locksmith can often rekey a lock even when the original key is gone, but the answer depends on the lock type, its condition, and whether it can be safely disassembled and decoded.
Understanding when rekeying without originals is possible — and when it is not — helps you make the right call when security matters most.
How rekeying works without the original key
Rekeying changes the lock’s internal pin configuration so a new key operates it. Normally this is done with the existing key for reference. Without the original, a locksmith uses a technique called lock picking or impressioning to open the lock first, then disassembles the cylinder and reads or replaces the pins. This requires skill and the right tools — it is not a DIY task — but it is a routine service for a licensed locksmith.
🔓 Pick and Rekey
Locksmith picks the lock open, then disassembles and rekeys. Works on most standard residential deadbolts.
🔍 Impressioning
A blank key is inserted and marked to identify pin positions, then filed to match. Creates a working key without originals.
📐 Decoding
Specialized tools read the existing pin heights through the keyway. No original key required for most lock types.
🔄 Full Replacement
If the lock is damaged or high-security, replacement is sometimes faster and more cost-effective than rekeying without originals.
When rekeying without originals is possible
Most standard residential deadbolts and knob locks from brands like Kwikset, Schlage, and Baldwin can be rekeyed without the original key. The locksmith gains access to the cylinder through picking or bypassing, then replaces the driver pins to match a new key. The condition of the lock matters — a heavily worn or damaged cylinder may not rekey cleanly and could warrant replacement instead.
When lock replacement is the better option
Some high-security locks — particularly those with anti-pick pins, restricted keyways, or patented key systems — are more difficult and time-consuming to rekey without originals. In those cases, or when the lock hardware is old and worn, full replacement is often the smarter choice. A new Grade 1 deadbolt costs relatively little and gives you known security from a fresh starting point.
What information helps the locksmith
Even without the original key, having useful context speeds up the job. Knowing the brand and model of the lock, whether it was recently re-keyed before, and how many entry points are involved helps the locksmith prepare the right tools and hardware for the visit. If you have any key that partially works — even an old copy — bring it out, as even a worn key gives useful pin position information.
Common situations where this service is needed
- Moving into a home where previous occupants had multiple keys
- A lost or stolen key that cannot be recovered
- Property takeover after eviction or lease termination
- Keys left with a contractor, ex-partner, or former employee
- Inherited property where key history is unknown
- Lock was changed by a previous owner without passing on keys
How long does it take to rekey without originals?
A skilled locksmith typically takes 10 to 30 minutes per lock depending on the brand, lock type, and condition. Picking a quality lock takes longer than working with a key present. Complex high-security locks may take longer or may require decoding tools. If you have multiple entry points, plan on slightly more time per lock as the locksmith works systematically through each one.
Lost Your Keys? We Can Help.
Multi Locksmith LLC rekeying services work even without the original key. Fast response throughout Montgomery County, MD.
📞 Call 240-706-4799