The keys you were never handed
When you buy or rent a home, the keys you receive at closing or move in are only the ones the last occupant chose to hand over. Nobody can tell you how many other copies exist. Previous owners, tenants, relatives, cleaners, dog walkers, contractors and real estate agents may all have held a key at some point, and most people never collect them back.
This is not a reason to feel alarmed about your neighbors or the people who lived there before. Most former residents are perfectly honest and have no interest in coming back. The point is simply that you cannot verify it. A lock you cannot account for is a lock whose security depends entirely on trust in strangers you have never met.
Rekeying removes the question. It makes every old key useless without changing the look of your hardware, and it gives you a clean starting point. That is why many homeowners treat it as one of the first practical chores after the truck is unloaded, ahead of hanging pictures or buying curtains.
Think of it the way you would think about a used car. You would not drive off the lot without asking how many sets of keys exist. A house deserves the same question, and the honest answer is almost always that nobody knows. Taking control of that number is the whole purpose of the work.
If you want a simple test of how seriously to take this, ask yourself who could walk in without breaking anything. If the list includes anyone you cannot name, you have your answer. The fix is small, the disruption is minor, and the result lasts for as long as you stay.
What rekeying changes and what it leaves alone
A lock cylinder contains small pins that sit at different heights. The cut of your key lifts each pin to exactly the right level so the cylinder can turn. Rekeying means a locksmith takes the cylinder apart, swaps in pins of different sizes, and cuts new keys to match. The old keys still fit into the keyway, but they no longer lift the pins correctly, so they will not turn.
The knob, lever, deadbolt body and door hardware all stay in place. You keep the finish and style you already have. For a full explanation of the mechanism, see our guide to how rekeying works, which walks through the parts in plain terms.
What rekeying does not do is repair a worn latch, fix a door that sags, or upgrade a weak strike plate. It changes who can open the lock, not how strong the lock is. If you suspect a problem beyond the key itself, mention it when you call so it can be looked at during the same visit.
A useful way to picture it is a lock that has been given a new secret. The outside looks identical, the door swings the same way, and your hand feels no difference. Only the hidden arrangement inside is different, which is exactly why a stranger holding the old key finds that it slides in but refuses to turn.
Rekey or replace: a decision for each door
Not every lock in a new home deserves the same answer. A solid deadbolt in good condition is a perfect candidate for rekeying. A loose, scratched, or very old lockset that already sticks may be better replaced, because new keys in a failing mechanism will still give you trouble next season.
The question to ask is simple: if I trust this hardware to last, I rekey it; if I do not, I replace it. Our article on rekeying versus replacing locks breaks this down by condition, age, and how the door is used.
Also think about the type of lock. Some builders install lighter duty hardware on side doors and garage entry doors than on the front door. Walking the whole house with fresh eyes, touching each handle and turning each key, tells you more than any checklist. Write down what feels loose, gritty, or stiff, and bring that list to the conversation.
If you are unsure, ask the person on the phone to talk through the options with you in plain words. A trustworthy locksmith explains what each choice means for the door before any work starts, and does not push you toward the bigger job. Your task is simply to describe what you see and feel when you use the lock.
One key for the whole house
One of the most useful things about rekeying is that it lets you consolidate. Many homes arrive with a different key for the front door, back door, garage entry and side gate. Carrying four keys on a ring is a small daily annoyance that leads to leaving one under a flowerpot.
When the cylinders are rekeyed, they can be set to share one key, provided the locks use compatible keyways. Your locksmith can tell you which doors can be grouped and which cannot. A deadbolt from one manufacturer and a knob from another may not match without changing hardware.
Think about who needs access. A single household key is convenient, but you might want a separate key for a gate, shed or storage room that a cleaner or helper should not be able to use for the main house. Deciding this before the visit saves time and avoids cutting keys you then regret.
Another benefit is fewer lockouts. When every door answers to the same key, you are far less likely to stand at the back door holding the front door key. In a busy household with children and visitors, that single change removes a surprising number of small daily frustrations from the first month in a new place.
Condos, townhomes and rentals in South Florida
Broward County has a large share of condominiums, townhomes and rental units, and each brings its own twist. In a condo, you may control your unit door but not the building entry, mailbox or storage cage. The association may also have rules about who can alter exterior hardware or hold master keys. Requirements vary, so ask your association or property manager before you schedule work.
Tenants face a different question. Your lease may limit what you can change, and the landlord may need a copy of the key. If you want to rekey a rental, talk with the owner first and keep that conversation in writing. Landlords have their own side of this, covered in our guide to rekeying a rental property.
If you are the landlord moving in a new tenant, the logic is the same as for any buyer. The last tenant's key should not open the door of the next one. Turnover is the natural moment to refresh the cylinders, and doing it consistently is simpler than deciding case by case.
Whatever your situation, keep the paperwork that proves who authorized the change. A short message from the association, owner or manager is enough. If a question comes up later about who altered the lock, having the record in hand keeps a simple matter from turning into an argument at the worst possible moment.
Shared hallways and common doors add another wrinkle, because you may depend on neighbors to keep the building entry closed. Your own unit door is the part you control, so make it count.
Do not forget the secondary entrances
People tend to focus on the front door because it is the one they use. Yet the door between the garage and the house, the sliding door onto the patio, and the side gate often matter just as much. The old owner might have had a copy of every one of them on the same ring.
The garage entry door deserves special attention. It is often tucked away from the street and used less frequently, which makes it easy to overlook. Our article on garage entry door security explains why that door deserves the same care as the front one.
Sliding doors and windows use different hardware, usually latches rather than keyed cylinders. A rekey will not touch those, so check them separately. Make sure each latch catches fully, each track is clear of debris, and any keyed secondary lock is accounted for. A full walk around the outside of the home, at daylight, is a good habit during your first week.
Outbuildings count too. A detached shed, storage room, pool equipment closet or workshop may use a padlock or a separate keyed lock that nobody mentioned. Take an hour to try the keys you were given on every lock you can find, and note which ones do not match anything, because those mystery keys tell you where old copies might be.
Car keys, garage remotes and other access
Moving in is also the moment to think about everything else that opens something. Garage door remotes, gate transmitters, mailbox keys, and shared amenity fobs for pools and gyms may all have been given to previous residents. Some can be cleared or reprogrammed, while others stay active until the property manager removes them.
If the home came with a keypad or a smart lock, do not assume the codes were reset. Ask the seller or property manager what was changed, and change every code yourself during your first day. Keep in mind that a keypad code is easily shared and easily forgotten, which is a reason to treat it as seriously as a metal key.
If your move also involves a car purchase or a spare key, our guide to where and how to duplicate keys can help you tell which items need a locksmith and which can be handled elsewhere. Keep a written list of every access item so nothing is missed.
A good habit is to write the list on paper and tape it inside a cabinet door, not on your phone alone. Move through the home door by door, and put a check mark next to each item as you change a code or confirm a rekey. In a week or two, the whole exercise becomes a short routine instead of a vague worry.
What affects the quote and how to plan for it
The final quote depends on a handful of practical things: how many cylinders need work, whether they are all the same brand and keyway, whether any hardware needs replacing instead, and how many keys you want cut. Distance and the nature of the property also play a part. None of these can be known precisely over the phone, which is why the price is explained before work begins.
Our article on what shapes a locksmith quote goes through each of these factors, and our list of questions to ask on the phone will help you get a clear answer before anyone arrives.
A good rule is to group the work. Having all the doors handled in one visit is usually simpler than several separate visits, and it lets you decide on key matching at the same time. Have the list of doors ready, note how many people need keys, and say whether any lock is already giving you trouble.
It also helps to be honest about what you cannot decide in advance. If an older lock fails when opened, the visit may turn into a small replacement, and the quote will change with it. Asking up front how that situation is handled, and who approves the change, keeps the process calm and keeps you in charge of the decision.
Whatever the final arrangement, ask for the plan to be repeated back to you before work begins, so that the number of doors, keys and any hardware changes all match what you understood.
Planning the visit around your move
The ideal moment is before you bring in the bulk of your belongings, or at least before the first night. That way, the lock work is not competing with boxes in the doorway, and you do not spend the first week with a door you cannot fully trust.
If you cannot be there the whole time, make sure someone with authority is. A locksmith should explain the work, show you the new keys, and test each lock with you before leaving. Working in the open, with the homeowner present, is a sign of a straightforward visit.
In humid coastal weather, cylinders can feel gritty from salt air or sticky from old lubricant. Mention anything that feels rough, and ask whether the cylinder should be cleaned while it is open. A short conversation at the start of the visit often answers several questions at once. If you are in the Hollywood or Pembroke Pines area, you can also read our general guidance on rekey service in Hollywood and rekey service in Pembroke Pines.
Plan for the humid months as well. Wood doors swell and metal doors sweat in Broward County summers, and a lock that feels fine in winter can bind when the air is heavy. If the door sticks, mention it, because a rekey on a binding door can leave you with the same complaint, only with new keys.
Habits after the new keys are in your hand
Once your locks are rekeyed, the work is not quite over. Count the keys you received, label the spares, and store them somewhere sensible. Handing a spare to a trusted neighbor or relative is better than hiding one outside, a habit we discuss in smart ways to hide a spare key.
Keep a short record of who holds each key. If a contractor, house sitter or cleaner needs temporary access, note when you gave it and when you got it back. When access changes hands often, think about whether a smart lock with individual codes would suit you, and read our door fit guide for smart locks before deciding.
Finally, revisit the question when circumstances change. A breakup, a lost key, a departing roommate or a change in household can each be a reason to rekey again. Our piece on how often to rekey a home helps you decide when it is worth repeating.
Finally, keep the process simple for everyone who lives with you. Show each person which key opens which door, and make sure children old enough to carry a key know not to lend it. A brief family conversation on the first evening matters more than any piece of hardware.