Rekey vs Replace Locks: Which Is Better?

When you want to change who can open your door, you have two main options: rekey the existing locks or replace them entirely. They sound similar but they're quite different in cost and outcome. Here's how to tell which one you actually need.

What Rekeying Does

Rekeying changes the internal pins of a lock so the old key stops working and a new key takes over — while the visible hardware stays exactly the same. You keep your current locks; only the key that operates them changes. Because there's no new hardware to buy, rekeying is usually the cheaper of the two.

What Replacement Does

Replacing a lock swaps out the hardware itself for something new. You'd do this when the existing lock is damaged, worn out, corroded, outdated, or when you want an upgrade — a higher-security lock, a keypad, or a smart deadbolt. Replacement costs more because you're paying for the new hardware plus installation.

When Rekeying Is the Better Choice

Rekeying usually wins when:

• Your locks are in good working condition and you simply want to control the keys.
• You've moved into a home and want old keys to stop working.
• You lost a key or a former tenant, roommate or worker still has one.
• You want several doors to open with a single key.

When Replacement Makes More Sense

Replacement is the smarter call when:

• A lock is damaged, badly worn, or corroded from coastal air.
• The hardware is outdated or doesn't secure the door well anymore.
• You want to upgrade — a smart lock, keypad, or higher-security deadbolt.
• A lock was drilled or forced during a lockout or break-in.

You Can Do Both at Once

It's not all-or-nothing. If some of your locks are in great shape and others are worn or you want an upgrade on the front door, we can rekey some and replace others in the same visit — and key everything alike so you carry one key. The goal is the right solution per door, not a blanket rule.

The Bottom Line

If your locks work fine and you just want new keys, rekey. If the hardware is failing or you want something better, replace. When you're not sure, we're happy to look at what you have and give you an honest recommendation rather than defaulting to the pricier option.