Copying a key sounds simple, and often it is. But a badly cut copy can stick, damage a lock over time or fail when you need it. Here's how to get spares that work.
Which keys can be copied?
Standard house keys
Most common pin-tumbler keys can be copied quickly from the original.
Restricted and high-security keys
Some systems, including many high-security cylinders, use patented key profiles that only authorized dealers can cut, usually with proof of ownership. That's a security feature.
Car keys
Transponder and remote keys need programming as well as cutting. See car key programming.
Keys marked "Do not duplicate"
The stamp alone isn't legally binding, but it signals that the owner wants copies controlled. Respect it in rental and workplace settings.
Why copies sometimes don't work
- Copying a copy. Small errors add up. Copy from the original if you can.
- A worn original. The copy reproduces the wear. A locksmith can cut a new key to the lock's code instead.
- Wrong blank. A near-match blank may fit loosely and turn badly.
- Rough edges. Burrs left on the cut can catch on the pins.
Keep track of spares
Every copy is another way in. Keep a simple list of who has which key, collect keys from people who no longer need them, and rekey when you lose track. See why rekeying matters.
Copying keys for businesses and landlords
Master key systems and restricted keyways let you control who can get copies. Ask about them on our commercial services page.
Need keys cut in Valley Village? Call 818-942-3093 or see residential locksmith services.
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