Key Duplication Quantity Planner

Rekey, Keyed-Alike, and Key Control

Rekey beats replace when hardware is sound

Rekeying (~$25 per cylinder) wins whenever the lock operates smoothly and cylinders share a keyway. Replace the full set when hardware is damaged, forced, or corroded, and replace cylinders first when brands are mixed.

Run two key groups at most

One shared key for convenience areas, one restricted key for rentals, offices, and utility rooms. Lost keys and tenant turnover force an immediate rekey before new copies go out. Log every key by person and date; collect all copies on move-out.