You moved into a new place in Wesley Chapel, lost a keyring in Monroe, or ended a lease in Indian Trail — and now every guide online tells you to "change the locks." But changing can mean two very different things, with very different price tags.
What rekeying actually does
Rekeying keeps your existing lock hardware on the door. A locksmith removes the cylinder and swaps the internal pins so a brand-new key operates the lock — and every old key instantly stops working. The door hardware, finish and handles stay exactly as they are.
What replacement means
Replacement removes the entire lock and installs new hardware. You pay for new locks plus installation labor — more money, but the right call in specific situations.
Choose rekeying when…
Your locks are in good working condition and the real goal is access control: you moved in, lost keys, changed roommates or contractors finished a project. Rekeying is faster, cheaper, and can also key every door alike — one key for the whole house, which alone is worth it for most families.
Choose replacement when…
The hardware itself is the problem: locks are worn, sticking, rusted or damaged from a break-in attempt; you want to upgrade builder-grade locks to quality deadbolts or high-security cylinders; or you are switching to smart locks. In those cases rekeying old hardware just preserves a weak point.
The cost logic in one line
Rekeying = labor plus new keys. Replacement = labor plus new keys plus new hardware for every door. On a typical home with several exterior doors, the difference is substantial.
The honest recommendation
For most Union County homeowners after a move or lost keys: rekey, and key everything alike. Reserve replacement for doors where the hardware genuinely needs an upgrade — often that means replacing just the front-door deadbolt and rekeying the rest. Our rekeying service covers Waxhaw, Marvin, Wesley Chapel, Weddington, Indian Trail and Monroe — call (844) 212-9178 and we will tell you on-site which doors truly need what.