Rekeying changes the internal pins of your existing locks so new keys are required, while changing locks involves installing completely new lock hardware. Both options improve security, but the right choice depends on your specific situation and goals.
Understanding Rekeying
When a locksmith rekeys your lock, they reconfigure the internal pin tumblers to work with a new key. Your lock hardware - the deadbolt body, exterior trim, and interior thumb turn - all stay in place. Only the key changes.
Benefits of Rekeying
- Lower cost: Typically 40-60% less expensive than lock replacement
- Keep existing hardware: Maintain your current style and finish
- Same security level: If your locks are high quality, rekeying maintains that security
- Faster service: Rekeying takes less time than replacing locks
- Key alike option: Can make multiple locks work with one key
Understanding Lock Replacement
Lock replacement removes your existing hardware and installs new deadbolts, knob locks, or handle sets. You get entirely new locks with fresh hardware and new keys.
Benefits of Lock Replacement
- Upgrade security: Install higher-grade locks
- Update style: Change the look of your door hardware
- Smart lock option: Replace with electronic/smart locks
- Address damage: Replace worn or damaged hardware
- Better functionality: New locks work smoothly
When to Rekey
Rekeying is the right choice when:
- Your locks are in good working condition
- You are happy with your current lock style and security grade
- You just moved into a new home
- You lost your keys and want peace of mind
- A roommate or employee with keys has left
- You want to key multiple locks alike
- Budget is a primary concern
When to Change Locks
Lock replacement is the right choice when:
- Your locks are old, worn, or difficult to operate
- You have basic Grade 3 locks and want better security
- You want to upgrade to smart locks
- Your locks were damaged in a break-in attempt
- You want to change the style or finish of your hardware
- Your locks show visible corrosion or rust
Cost Comparison
While exact prices vary, here is a general comparison:
- Rekeying: Primarily labor cost plus new pins and keys
- Lock replacement: Cost of new hardware plus installation labor
For a typical home with 3-4 exterior locks, rekeying will generally cost significantly less than replacement with quality Grade 2 locks.
Making the Decision
Ask yourself these questions:
- Are my current locks working properly?
- Am I satisfied with my current security level?
- Do I want to change the look of my hardware?
- Am I interested in smart lock features?
- What is my budget?
A professional locksmith can inspect your current locks and provide recommendations based on their condition and your security needs.



