What a rekey actually changes
Rekeying means changing the internal pin arrangement of a lock so the old key no longer works and a new key does. The lock body, the bolt, the faceplate and the handle all stay where they are. Only the part that recognizes the key is reset.
This is why rekeying appeals to homeowners who like their existing hardware. A solid deadbolt that still turns smoothly does not need to be thrown away just because a key has gone missing. The security change comes from the pattern, not from the metal around it.
It also means the finish and appearance of your door stay as they are. Nothing needs to be repainted, no new holes are drilled and the trim does not move. For a home with a carefully matched set of handles, that matters.
There is a practical side as well. A rekey leaves the door working the way you and your family already know it. The handle turns the same direction, the deadbolt throws the same distance, and guests do not have to learn anything new. Only the key in your pocket is different, and that is the whole idea.
A rekey is not a repair, though. If a lock is worn, bent, corroded or poorly installed, a new pattern will not fix those flaws. Part of planning is deciding honestly whether the hardware deserves to stay, which our page on rekeying versus replacing locks explores in depth.
The moments that usually trigger a rekey
Most rekeys come from a change in who might hold a key. Buying a house is the most common reason, since you cannot know how many copies the previous owner, agents, contractors and neighbors received. We cover that situation in rekeying locks after moving in.
A lost or stolen key is the second big trigger, especially if it was on a ring that also carried your address or a car fob. Even if you believe the key will never be found, the safest assumption is that someone could eventually try it. Our guide to lost house keys goes through that decision.
Life events matter too. A breakup, a roommate moving out, a contractor finishing a long project, a house sitter returning from a stay, or an adult child who has moved away all change the circle of people who hold keys. Rekeying resets that circle cleanly.
Some owners also rekey simply to simplify life. If your front door, back door and garage entry each use a different key, a rekey can bring them onto one pattern, as we explain in our guide to one key for many locks.
Counting what needs attention
A good plan starts with a walk around your property. Write down every door and gate that has a keyed lock. Front entry, back door, garage entry, side door, sliding door lock, patio gate, pool fence, storage closet, shed and mailbox all count if you want them on the same plan.
Next, separate the locks by type. A deadbolt and a knob lock on the same door are two cylinders, and both may need attention. A single lockset with a keyed handle and a separate deadbolt is a different job from a combined unit. Note whether each cylinder is on the inside, the outside or both.
Also take note of any lock that sticks, drags or feels loose. Those details change the scope of work because a struggling cylinder may need cleaning or replacement while it is open. Mention them on the call so the technician arrives prepared.
Humidity and salt air deserve a mention here. In coastal Broward County, cylinders on doors that face the weather can corrode inside, and a key that has gone gritty or hard to insert is a clue. Doors on covered porches and interior doors usually fare better than exposed gates and garage side doors, so note where each lock lives.
The number and type of cylinders, along with their brand and condition, are the biggest influences on what a visit involves. A short list of three standard deadbolts is a straightforward visit, while a long list of mixed brands, specialty keyways and outdoor locks is a bigger one.
- List every keyed lock, including gates, sheds and mailboxes.
- Note the brand on each lock face or latch edge.
- Mark which locks stick, rattle or feel worn.
- Decide which locks should share a key and which should not.
- Count how many working copies each person needs.
Why brand and keyway matter
Locks are built to a keyway, the shape of the slot a key enters. Common household brands have their own keyways, and a rekey works by fitting new pins inside the existing cylinder. If a technician has the right components for that brand, the work is routine.
Some brands, especially higher security lines, have restricted keyways and special components. Rekeying them may involve the maker's own parts or a particular procedure. If you have a specialty lock, say so up front and ask whether it can be rekeyed on site.
Sometimes a lock cannot be rekeyed practically at all. Very old cylinders, damaged ones, or unbranded imports with unusual parts may be better replaced. A technician who tells you that honestly is doing you a favor, because forcing a rekey onto a failing lock only postpones the problem.
If you want several doors to share a key, brands matter more still. Locks need compatible keyways to accept the same key. Mixed brands can still be unified, but it may involve swapping one or two cylinders so the whole set speaks the same language.
What shapes a rekey quote
Without getting into numbers, it helps to know which factors move a quote up or down. The count of cylinders is the first. The brand and keyway is the second. The condition of each lock is the third, since worn parts add steps.
The fourth is the number of keys you want cut. Each lock set comes with a standard handful of working keys, but a big family or a rental with many users calls for more. The fifth is the location of the work and how easily the technician can reach every door.
A sixth factor is whether any lock needs additional repair while it is open. A loose set screw, a damaged latch or a sticky tailpiece are all easy to address in the same visit, and the technician should tell you before adding anything.
None of this should be a mystery on the day. The work and the price are explained before it begins, and you decide whether to proceed. To understand how this compares across providers, read our notes on what shapes a locksmith's quote and how to judge a fair quote in Broward.
Questions that make the phone call productive
The call is where most of the clarity comes from. Start by describing your situation: what happened, how many doors, and what brand of locks you have. Ask whether the technician can handle those locks on site and what they will need to see.
Ask how the price is determined and whether it will be explained before work begins. Ask if the quote covers all cylinders you listed, the number of keys you will receive, and any extra steps such as testing or removing old keys from circulation.
Ask what the technician will do if one lock turns out not to be rekeyable. A good answer describes an alternative, such as replacing that cylinder with a matching one, and promises to explain it before doing it.
For a longer list of ideas, our guide to questions to ask a locksmith on the phone is worth a read. Having three or four of them ready usually makes the conversation shorter and the result clearer.
Be honest about timing and access as well. If you want the work done before a tenant moves in or before relatives arrive for the holidays, say so. If a gate code, a dog or a locked garage will affect how the technician reaches the doors, mention it. Small details like these are what keep a visit smooth.
During hurricane season, a different kind of planning applies. Before a storm, gather your keys in one place, make sure every household member knows where the spare is, and avoid scheduling lock work in the days when roads and homes are being prepared. After a storm, check that doors still close and lock properly, since swollen frames and shifted hinges can make a good lock feel broken.
What the visit looks like
When the technician arrives, they will usually start by confirming the list of locks with you. This is the moment to point out anything you forgot, such as a back gate or an interior closet. It is far easier to add a lock now than to schedule another visit later.
Each cylinder is then removed or opened, its pins are changed to the new pattern, and it is reassembled. The process is deliberate and mechanical. The bolt, the latch and the handle are checked as the work happens, so small problems are noticed while the cylinder is in hand.
If you want more depth on the mechanics, our page on how rekeying a lock works explains the pin and spring arrangement in more detail. You do not need to understand it to benefit, but it makes the process feel less mysterious.
Throughout, you should expect to ask questions and get plain answers. A technician who explains each step, answers plainly, and shows you the results is the kind of person you want handling your front door.
Testing the finished work together
The visit is not done until every lock is tested with you. Try each new key in its lock several times from the outside. Turn it fully, throw the bolt and retract it. The motion should be smooth, with no catching or grinding.
Confirm that the old key no longer turns. This is the whole point of the job, and it is easy to check. Ask the technician to demonstrate that an old key will not operate the cylinder. If you have any old keys on hand, bring them out.
Test the doors in their normal use as well. Close the door, lock it from outside, unlock it, and listen for the latch. A rekey should not change how the door sits, but while the hardware is out, alignment problems sometimes show up. Those are worth fixing right away, as noted in our look at doors that will not latch.
Finally, label the new keys and decide who gets which. Keep the spare in a safe place and write down where it is. A system that is easy to keep organized is a system you will actually use.
If you have children old enough to carry a key, talk through the rules before handing one over. A key on a lanyard around the neck of a school bag invites loss, while a key on a zipped pocket clip is far more likely to come home. A brief conversation now prevents a repeat rekey later.
Rekeying for rentals and shared homes
If you own a rental, the rekey takes on an extra role. Every new tenant is entitled to a lock that previous occupants cannot open. A routine rekey between tenants is a simple, clear commitment to their safety.
Landlords with multiple units can combine rekeying with a master key plan so that maintenance staff or a manager can reach every unit with one key. That is a different design from a flat keyed alike set, and it needs planning at the start. Our notes on rekeying rental property cover those details.
Shared homes among roommates need their own thinking. Each person may want a unique key for their own bedroom lock while sharing the front door pattern. Agree on the plan before the visit so the technician can set it up in one trip.
In condos and communities with shared rules, ask the association what is permitted before changing the entry door cylinder. Requirements vary, and it is better to know in advance than to discover a rule after the fact.
After the rekey: habits that keep you safe
A fresh pattern only helps if you protect it. Avoid hiding a spare under a doormat, in a flowerpot or on top of a door frame, since those spots are checked first by anyone searching. A trusted neighbor or a lockbox with a code is a more thoughtful choice.
Keep a short record of who has a key and when it was issued. When someone leaves your circle, you will know whether a rekey is due. Our guide on how often to rekey a home offers a way to think about timing.
Look over the other parts of the door at the same time. A rekeyed cylinder in a loose door frame or a weak strike plate still leaves a gap. Look at the screws, the strike and the hinges, and if anything is loose, mention it.
For anything related to the doors of your house, our house lockout and rekey page gives an overview of how we handle residential locks in Broward County. The simplest next step is a phone call describing your doors and what you hope to change.
If you are still undecided, a useful exercise is to imagine the worst plausible outcome of leaving things as they are. A stranger holding a key to your home is an uncomfortable thought, and the fix is a modest, well understood job. It also helps to treat the job as routine maintenance rather than an emergency. Choose a calm moment, gather your list of doors, and make the call with your questions written down. A planned visit gives you time to compare options, ask about every lock, and decide how many keys each person really needs. Most owners find that once the new keys are in hand, the background worry they had been carrying simply disappears.