Short answer: When you take possession of a home, you inherit every key that was ever handed out with it — and you have no way of knowing who still holds one. This checklist walks through the practical security reset every new occupant should do, from rekeying the obvious doors to the access points people forget until it's too late.
When you take possession of a home, you inherit every key that was ever handed out with it — and you have no way of knowing who still holds one. This checklist walks through the practical security reset every new occupant should do, from rekeying the obvious doors to the access points people forget until it's too late.
The uncomfortable truth about a new home is that keys have a history you cannot see. Previous owners, their relatives, contractors, cleaners, agents, dog walkers, and old tenants may all have had copies, and a friendly handover of two keys at closing tells you nothing about the ten that were made over the years. That is why a reset — not a leap of faith — is the responsible first move. You do not necessarily need to replace the hardware: in most cases a locksmith can rekey the existing locks so every old key stops working and you get a fresh set, which is typically the faster and more economical path. Full replacement makes sense when the hardware is worn, low-grade, or you want to upgrade security at the same time.
Rekeying changes the internal pins so previous keys no longer fit, giving you a clean slate without swapping the whole lock, and it is usually priced per cylinder — often in the low tens of dollars each in service, plus a trip charge, though ranges vary by area and how many openings you do together. Since you are already resetting everything, it is worth asking to have the locks keyed alike so one key runs the front, back, and side doors, which quietly ends the everyday hassle of hunting through a ring and makes a lost-key rekey simpler down the road. This is also the natural moment to grade up any flimsy builder deadbolts to a stronger rating, because doing the upgrade and the reset in one visit is more efficient than calling twice.
A front-door rekey does little good if the side gate, garage, or back slider is the easy way in. Walk the whole perimeter and list every access point: exterior doors, the door from the garage into the house, gate and shed padlocks, and any deadbolt on a basement or side entrance. Then reset the digital access most people forget — reprogram garage-door remotes and keypad codes, change any smart-lock codes and remove old users from the app, and check window and patio-door locks actually engage. Mailbox locks and any communal or building keys deserve the same skepticism. Treating the move-in reset as a whole-property pass, rather than a single lock, is what turns a new address into genuinely your home, and a locksmith can knock out the physical side of that list in a single appointment.
The uncomfortable truth about a new home is that keys have a history you cannot see. Previous owners, their relatives, contractors, cleaners, agents, dog walkers, and old tenants may all have had copies, and a friendly handover of two keys at closing tells you nothing about the ten that were made over the years. That is why a reset — not a leap of faith — is the responsible first move. You do not necessarily need to replace the hardware: in most cases a locksmith can rekey the existing locks so every old key stops working and you get a fresh set, which is typically the faster and more economical path. Full replacement makes sense when the hardware is worn, low-grade, or you want to upgrade security at the same time.
Rekeying changes the internal pins so previous keys no longer fit, giving you a clean slate without swapping the whole lock, and it is usually priced per cylinder — often in the low tens of dollars each in service, plus a trip charge, though ranges vary by area and how many openings you do together. Since you are already resetting everything, it is worth asking to have the locks keyed alike so one key runs the front, back, and side doors, which quietly ends the everyday hassle of hunting through a ring and makes a lost-key rekey simpler down the road. This is also the natural moment to grade up any flimsy builder deadbolts to a stronger rating, because doing the upgrade and the reset in one visit is more efficient than calling twice.
A front-door rekey does little good if the side gate, garage, or back slider is the easy way in. Walk the whole perimeter and list every access point: exterior doors, the door from the garage into the house, gate and shed padlocks, and any deadbolt on a basement or side entrance. Then reset the digital access most people forget — reprogram garage-door remotes and keypad codes, change any smart-lock codes and remove old users from the app, and check window and patio-door locks actually engage. Mailbox locks and any communal or building keys deserve the same skepticism. Treating the move-in reset as a whole-property pass, rather than a single lock, is what turns a new address into genuinely your home, and a locksmith can knock out the physical side of that list in a single appointment.
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