Rekeying changes which key works in your existing lock, without necessarily replacing the lock itself. It can be a practical way to limit access when you move, misplace a key, or no longer want someone to have one. The right choice depends on who might still have a copy, the condition of your hardware, and whether the lock needs more than a new key. Here are common situations to consider and what to do next.
After Moving Into a Home
When you move into a previously owned or rented home, you may not know how many keys are still out there. Former residents, contractors, cleaners, or neighbors could have copies. Rekeying lets you keep compatible locks while making old keys stop working. Consider rekeying exterior doors soon after moving in, especially if the seller or landlord cannot confirm that every copy has been returned.
Check which doors need attention, including side and back entrances, garage doors with keyed locks, and any separate entry to a basement or apartment. A locksmith can assess whether the locks can be rekeyed to work with one new key. If you rent, ask the landlord or property manager before arranging a change, since they may need to manage the work and retain access.
When Keys Go Missing
A lost key does not always mean someone can identify your address, but the risk is higher if it was lost with an ID, address tag, or other identifying item. If you cannot account for the key and someone could connect it to your home, rekeying can prevent that key from opening the lock. Take extra care with keys lost near your home or during a break-in.
If the key is likely inside your home or was lost somewhere unrelated to your address, you may decide the risk is low. Still, consider who had access to the key and whether it was ever copied. If you choose to rekey, tell everyone who needs access how to get a new key, and update any key safe or spare-key arrangements.
When Access Changes
Rekeying can help when a household member moves out, a relationship ends, or a regular service provider no longer needs access. It is also worth considering after lending a key that was not returned or discovering that someone made an unapproved copy. Focus on who might still hold a working key rather than relying only on whether the original key was handed back.
Before changing the locks, check any agreements or responsibilities that apply. In a rental property, follow the landlord’s process. In a shared home, make sure the people who are meant to have access receive new keys. If you use a keyed lock for a gate or outbuilding, include it in the plan if it protects an entry route or valuables.
Rekey or Replace the Lock?
Rekeying is often suitable when the lock works properly and you want old keys to stop working. Replacing the lock may be a better choice if the hardware is damaged, difficult to operate, poorly fitted, or does not meet your security needs. A locksmith can inspect the lock and explain which option fits its condition and your door.
Before booking, note how many locks you want changed and whether you would like them to use the same new key. Ask what information the locksmith needs about the lock and door, and keep the new keys in a controlled place. Do not leave a labeled spare where a stranger could connect it to your home.
Rekeying is worth considering whenever you cannot confidently account for who has a working key, particularly after moving, losing keys, or changing household access. If the lock itself is worn or damaged, replacement may be the safer fit. A local locksmith can inspect your doors and help you choose the right next step.