Rekey or Replace Locks? How to Decide
Published 2026-09-17
Rekeying changes the key that operates an existing compatible lock. Replacing a lock changes the hardware. Start with the problem you need to solve: unwanted key copies, failing hardware or a different way to control access.
When rekeying is worth assessing
If the lock works and you want old keys to stop opening it, ask whether the cylinder can be rekeyed. Moving into a home or changing an authorized keyholder are common reasons to review key control. A rekey does not fix a misaligned door or worn mechanical parts.
Using one key for several doors also requires compatible keyways. Include the brand of each lock and the number of cylinders when requesting residential locksmith service.
When replacement may fit the job
Describe a cracked or worn lock, persistent sticking, or a desired feature such as keypad access. The assessment should separate lock failure from a door or strike alignment issue before hardware is selected.
For a new lock, check the door preparation and manufacturer requirements. For a smart lock, also consider backup entry, battery management and who controls temporary access.
Do not overlook other ways into the property
A new physical key does not revoke garage remotes, building fobs, keypad codes or app permissions. Review each access method separately, especially for a rental or workplace. The commercial lock-change checklist helps organize that review.
Prepare a useful quote request
Count the cylinders, take photos of the hardware and explain which keys still work. Include your city and preferred appointment time. Ask whether the quote includes the service call, labor, keys and any replacement parts.
Read what goes into a locksmith quote, then email your request. Do not send photos of identity documents or access codes.