Locksmiths for Lock Rekey

What Rekeying Changes Inside the Lock

Most home and office door locks are pin tumbler locks. Inside the cylinder, a rotating plug holds a row of key pins cut to different heights, with spring-loaded driver pins stacked above them. The cuts on your key lift each pin stack until the gap between the pins lines up at the shear line, which lets the plug turn.

To rekey, a locksmith removes the cylinder, slides the plug out with a plug follower so the springs and driver pins stay put, and replaces the old key pins with a new set matched to the cuts on a new key. Old keys can no longer raise the pins to the shear line. The handle, latch, deadbolt housing, and finish stay exactly as they are.

Rekey or Replace: How to Decide

Rekeying is the right call when the hardware still works and the real problem is who has keys: you just moved in, a key went missing, or a contractor, former roommate, or departing tenant kept a copy. The lock stays; the old keys die.

Replacement makes more sense when:

• The lock itself is worn - the key sticks, the plug wobbles, or the bolt drags in the strike.
• You want a stronger lock. Durability is rated by ANSI/BHMA grades, with Grade 1 the most robust, and a rekey cannot raise a lock's grade.
• You want one key across mixed brands. A Kwikset key cannot enter a Schlage keyway - the profiles are different shapes - so matching them means swapping a cylinder, not just pins.

Keyed Alike, Master Keys, and Interchangeable Cores

Rekeying is also how key systems get built.

• Keyed alike: every lock is pinned to the same cuts, so one key opens the front door, back door, and garage entry. This only works across locks that share a keyway.
• Master keyed: small master pins added to some chambers create a second shear line. Each door keeps its own key while one master key opens them all - common in small offices and rental buildings.
• SFIC cores: many commercial doors use a small format interchangeable core. A special control key pulls the whole core in seconds, so keys can be changed building-wide without taking the hardware apart.

What to Have Ready Before You Call

A little prep makes the conversation faster and the plan more accurate.

• Count the doors and locks, and note the brand stamped on the lock face or your keys - Kwikset, Schlage, and others use different keyways.
• Check whether you have a working key for each lock. Rekeying goes fastest with one; without it, a locksmith typically picks or shims the cylinder open first, which is routine work.
• Safe to do yourself: a puff of dry graphite or PTFE lubricant in a gritty keyway. Not safe: oily sprays that gum up the pins, or opening a cylinder on your own - one spilled pin stack turns a simple rekey into a rebuild.

Describe your locks and how many keys you want, and you will confirm whether the service can help before any technician is scheduled - call (916) 913-5080 to talk through your rekey.

Frequently Asked Questions

Can a lock be rekeyed without the original key?

Yes, in most cases. A locksmith can pick the cylinder open or remove it from the door and shim it, then rekey it normally once the plug is out. Having a working key simply makes the job quicker. What matters more is the lock's condition: a badly worn plug or a damaged keyway may push the recommendation toward replacement instead of a rekey.

Does rekeying make my lock more secure?

Rekeying restores key control - it guarantees no old key still works - but it does not change the lock's construction or its ANSI/BHMA grade. The cylinder keeps the same pin chambers and the same resistance to force. If you want a harder target, ask about adding security pins during the rekey, or about stepping up to a higher-grade deadbolt, which is a replacement job.

Can all my locks be rekeyed to work on one key?

Only if they share the same keyway. Locks within one brand family, such as all-Kwikset or all-Schlage, can usually be keyed alike in a single visit. Mixed brands cannot share a key through rekeying alone, because each key blank fits only its own keyway profile. The usual fix is swapping one or two cylinders so everything matches, then pinning the whole set to a single key.

Call (916) 913-5080 about locksmiths for lock rekey.