Change the key on a compatible lock
Rekeying is useful when you want old keys to stop working but the existing lock is sound. We need to know how many cylinders are involved and whether each lock still turns and latches normally. A photo of both sides of the door can help identify the hardware.
If the lock is loose, the key is difficult to turn or the bolt hits the frame, tell us about those symptoms. Changing the key will leave a mechanical problem in place. We can discuss whether repair or replacement fits what you need.
Lock Change vs. Rekeying
If a working lock needs a different key after a move or tenant turnover, ask whether the cylinder can be rekeyed. If the cylinder is worn, the housing is damaged or you want a different type of lock, ask about repair or replacement. The number of cylinders and the keys you want them to share affect the quote.
NYC locksmith pricing guideLock Rekeying FAQ
Can any lock be rekeyed?
It depends on the cylinder. A compatible lock in good condition may be rekeyed. If the cylinder is damaged or uses a key system controlled by building management, we’ll need those details to check your options.
Can you rekey a lock if I lost the working key?
Sometimes. Tell us what kind of lock it is and whether you can open the door. We can confirm what work is needed and what authorization to have ready.
Will I keep the existing handles?
With a compatible cylinder in good condition, rekeying changes the key that works while keeping the existing lock hardware. Compatibility depends on what is installed.
Can my front and back doors use one key?
Possibly, if the cylinders accept compatible keys. Describe both locks or have photos ready so we can discuss the options.

