Rekey After Every Move—No Exceptions
The moment you close on a home or sign a lease, schedule a rekey. Previous owners, contractors, real estate agents, and maintenance workers may still hold keys. You have no way to track every copy that was cut over the years.
Rekeying replaces the internal pin stack so old keys no longer work. A locksmith can rekey most pin-tumbler deadbolts and knob sets in under ten minutes per lock. It costs a fraction of replacing hardware and gives you total control from day one.
If you skip this step and a stranger walks in months later, your insurer may question whether you took reasonable precautions. Rekey immediately after move-in. It's the single most important time to do it.
Rekey Immediately After Losing Keys
Lost your keys at the gym or left them in a rideshare? Rekey that day. A lost key with an attached address tag—or even a recognizable keychain—is an open invitation. Waiting to see if they turn up is a gamble you don't want to take.
Many people assume they'll remember to rekey "later." Weeks pass, the urgency fades, and the security hole remains. A mobile locksmith can arrive the same day, often within an hour, and rekey every exterior lock on the spot. You get new keys and peace of mind before nightfall.
If you share a master-key system across multiple doors, inform the locksmith. They can rekey to a fresh master and cut new sub-master keys for family members, preserving your keying hierarchy without replacing cylinders.
Rekey After a Break-In or Attempted Entry
Even if the intruder didn't use a key, rekey after any break-in. Forced-entry damage often mars the cylinder or bolt mechanism, and you want a locksmith to inspect strike plates, bolt alignment, and cylinder condition. Rekeying ensures no duplicate keys exist if the intruder had inside help.
Upgrade strike plates to three-inch screws anchored into the wall stud, and consider ANSI/BHMA Grade 1 deadbolts if your current hardware is Grade 3 builder-spec. A break-in is the moment to harden every entry point, not just patch the obvious damage.
Check window locks and sliding-door auxiliary bars while you're at it. Comprehensive residential security means thinking beyond the front door.
Rekey When Relationships or Household Composition Changes
Divorces, roommate departures, employee turnovers (if you have in-home staff), or tenant move-outs all warrant a rekey. Emotional trust and legal key custody are separate matters. Rekeying is the clean break that prevents awkward—or dangerous—situations later.
Some states require landlords to rekey between tenants. Even if your jurisdiction doesn't mandate it, it's best practice. Former tenants may have given keys to friends or service providers. Rekeying closes that loop.
For shared custody arrangements, consider giving the other parent a sub-master that works exterior doors but not interior office or bedroom locks. A locksmith can set up tiered access in a single visit.
Do You Need to Rekey on a Fixed Schedule?
Unlike changing smoke-detector batteries, rekeying doesn't follow an annual calendar. Most homeowners go years without needing a routine rekey if they experience none of the trigger events above. The lock mechanism itself doesn't degrade from time alone—pin-tumbler cylinders can function for decades.
That said, if you run a high-turnover rental or a home office where clients or contractors visit frequently, an annual or biannual rekey audit makes sense. Review who has keys, check for worn or sticky cylinders, and rekey anything questionable.
If you've had the same keys for ten-plus years with no turnover, a preventive rekey isn't urgent but isn't wasteful either. Think of it as inexpensive insurance. For most single-family homeowners, event-driven rekeying is sufficient.
Rekey vs. Replace: When Each Makes Sense
Rekey when the cylinder body, bolt, and hardware are in good shape. The locksmith swaps the pin stack and hands you new keys. Cost is typically $20–$40 per lock, far less than a full replacement.
Replace when the lock is damaged, corroded, or low-grade builder hardware you want to upgrade. If you're moving from a wafer lock to a pin-tumbler deadbolt or installing a smart lock, replacement is the only path. Rekeying a damaged cylinder saves nothing—you'll pay for labor twice when the lock fails.
A locksmith can assess on-site. Honest advice: if rekeying works, we'll say so. If the lock needs replacing, we'll explain why. Our mobile service means you get an in-person evaluation before committing to the work.
How to Prepare for a Rekey Appointment
Gather all existing keys you want to keep working (for unchanged locks) and decide how many new keys you need cut. Tell the locksmith if you want all exterior doors keyed alike or if you need separate keys for side gates or sheds.
Check interior doors—bedroom and bathroom privacy locks don't need rekeying unless they use keyed cylinders. Most use a push-button or turn-thumb mechanism with a generic emergency release. Focus rekey budget on exterior and garage-access doors.
If you have a smart lock with a mechanical key backup, confirm the locksmith can rekey that cylinder. Some proprietary smart-lock keyways require manufacturer blanks. A mobile locksmith will tell you immediately if they can service it or if you need to order parts.
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