Rekeying vs. Replacing Locks: How to Choose

Rekeying and replacing both stop old keys from working, but they are not the same job. Knowing the difference helps you ask for the right thing and avoid paying for hardware you do not need.

What rekeying does

A pin tumbler lock opens when the pins inside line up with the cuts on the key. Rekeying swaps those pins for a new set, so the existing lock body stays on the door and only the key changes. Old keys stop working, and a new key operates the lock.

Rekeying is a good fit when:

• You just moved into a home and do not know who still has keys.
• A key was lost or a roommate, tenant or employee moved out.
• The locks work smoothly and you like the hardware you have.
• You want several doors to open with one key.

When replacing makes more sense

Replacing means installing new lock hardware. It is usually the better choice when:

• A lock is worn, sticking, or physically damaged.
• You want a stronger deadbolt or a different style, such as a keypad or smart lock.
• The existing locks are a low-grade model you would rather upgrade.
• The door or frame needs repair anyway.

Questions to ask before you decide

1. Do the current locks turn smoothly with the key?
2. Is the problem who has keys, or the lock itself?
3. Would one key for all the doors make life easier?
4. Is now a good time to upgrade a deadbolt or add a keypad lock?

If the answer is mostly "it's about who has keys," rekeying is usually the faster and less expensive route. If the hardware itself is the problem, replacement is worth it.

Local help in Northern Colorado

Choice City Locksmith rekeys locks, installs new locks and repairs door locks for homes and businesses in Fort Collins, Loveland, Greeley, Windsor, Wellington, Timnath, Severance and Berthoud.

Choice City Locksmith · 112 N Grant Ave, Fort Collins CO 80521 · (970) 803-1100 · Open 5 AM–9 PM daily

Written with AI assistance and reviewed for accuracy.