Is It Cheaper to Rekey Than to Replace?

Almost always cheaper to rekey. A typical rekey runs $20–$35 per cylinder. A solid replacement deadbolt is $40–$120 per door, plus labor, plus disposal of the old hardware.

For a 5-door home, rekeying lands around $150–$250 total. Replacing all five with mid-grade hardware lands around $400–$700.

Replacement only beats rekey on cost when your existing locks are already failing — a worn cylinder fights you every time you turn the key. In that case, the new lock pays for itself in convenience and security.