What does a lock rekey actually do?
A rekey changes the inside of a lock so that a different key operates it. The lock itself stays on the door. Your knob, deadbolt, or handle set keeps working and looking the same, but the old keys no longer turn it. That includes the ones in a former tenant's pocket, a previous owner's kitchen drawer, or on a key ring you lost last week.
Most residential locks are pin tumbler locks. Inside the cylinder is a row of small spring-loaded pins of different lengths, and the correct key lifts every pin to the same line so the cylinder can turn. To rekey, we take the cylinder out, change the pins so they match a new key, and put it back together. Nothing on the door is drilled, cut, or thrown away.
In Cudahy, where so many homes and units are renter-occupied and keys pass between people constantly, rekeying is one of the most practical security steps there is. This page covers how it works, when it makes sense, what changes the cost, and how it plays out on Cudahy's own kind of property. David, who owns Wilshire Lock & Key and leads our technicians, has been working on this kind of lock for a long time, and it is some of the most routine, dependable work in the trade.
When does it make sense to rekey your locks?
The common thread is simple: you cannot account for every copy of the key that opens your door. If that is true, rekeying closes the gap without replacing good hardware. These are the situations we see most often:
- Rekey locks after moving in. You rented or bought a place and have no idea how many copies the last occupant made, or who they gave them to.
- Rekey locks after buying a house. Previous owners, agents, contractors, cleaners, and neighbors may all have held a key at some point. A new key set resets that.
- Rekey locks after a tenant moves out. For landlords, tenant turnover rekey is the standard way to hand the next tenant a door that only their keys open.
- Rekey locks after losing keys. If your keys went missing and an address or a recognizable keychain could be connected to them, do not wait to see what happens.
- After a breakup, a roommate leaving, or a falling-out with someone who had a key and did not hand every copy back.
- After an employee or contractor leaves, for a business lock rekey.
- When you want every door on one key. A rekey of all house locks can put the front door, back door, and side gate on a single key, so you carry one instead of four.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How does a rekey visit work, step by step?
Here is what to expect when you call and a technician comes out to your address in Cudahy.
- You call (213) 577-1366. We ask how many locks, whether it is a house, apartment, or business, the brand if you know it, and whether anyone is locked out right now.
- A van comes to your address from our mobile fleet, with the pins, tools, and key blanks for the common residential and light-commercial cylinders on board.
- Before taking anything apart, we check each lock. We confirm it turns freely, that it is the kind of lock that can be rekeyed, and that the door and strike plate are lined up properly. If a lock is worn out or damaged, we tell you before we start.
- We explain the work and the quote, and we ask you to confirm you have the right to authorize it, such as showing you live there or manage the property.
- We remove each cylinder, change the pins to match the new key, cut the keys, and reassemble.
- We test every lock with the new key several times, from both sides of the door where it applies, and confirm the old key no longer works.
- You get the new keys, and we tell you if any lock is better replaced than rekeyed. If you want spares, we can cut them on the spot.
Rekey, change the locks, or replace them: which do you need?
These three are often mixed up. A rekey keeps your hardware and changes the keys. Changing locks usually means swapping the hardware itself for new locks, which is what our change locks service covers. Replacement is the right call when the lock is broken, worn out, or no longer fits your needs, and that is handled under lock replacement.
If your locks are in good condition, rekeying is usually the more economical route, because you are paying for a technician's time and a few small parts rather than all-new hardware. It is also less disruptive: the door looks the same, the finish matches, and nothing needs refitting.
There are cases where a rekey is not the right answer, and we will say so. A cylinder that sticks or grinds, a deadbolt that does not fully extend, a lock with a damaged or missing part, or hardware too old to get proper pins for should be replaced, not rekeyed. The same goes if you want a higher-security lock or a different style. We would rather tell you that at the door than rekey a lock that will fail in a few months.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How much does lock rekeying cost in Cudahy?
We do not publish flat numbers for rekeying, because the real cost depends on the job in front of us. What moves it up or down:
- How many cylinders are being rekeyed. Each lock is its own piece of work, so a single back door is a different job from a full house or a row of rental units.
- The type and brand of lock. Standard residential cylinders are straightforward. Specialty, restricted, or high-security cylinders can take more time and different parts.
- Condition of the hardware. A lock in good shape rekeys cleanly. One that is worn or damaged may need repair or replacement on top.
- How many keys you want cut, and whether all locks are being keyed alike.
- The time of day. Calling in the middle of the night is different from booking a daytime visit.
- Distance. Cudahy is about 16 miles from our Westwood storefront, and that is part of the travel picture.
- Whether other work comes with it, such as a gate padlock, mailbox lock, or a door that needs alignment.
Rekeying on Cudahy lots: landlords, front houses, and rear units
Cudahy has a housing pattern you do not see in many places. The city is known for its deep, narrow parcels, a leftover from the original one-acre ranchito subdivision, and many of them now hold a front house with several rental units behind it. Most of the buildings are renter-occupied and date from the 1920s through the 1960s, with long shared driveways, often gated. That layout makes Cudahy one of the densest cities in the country, and it shapes what rekeying looks like here.
On a typical Cudahy lot, one address can mean several separate households. When a tenant leaves a rear unit, the landlord is left with a door that still opens for the departed tenant, their friends, and maybe a former roommate. A tenant turnover rekey fixes that without replacing the hardware. For owners who manage a whole parcel, we can rekey each unit to its own key, keep the front house on a separate key, and make sure the shared gate and mailboxes are handled on purpose rather than by accident. Our page for landlord locksmith services goes into the property-management side of this.
The same thinking applies across the ZIP code, 90201, whether you are near the Clara Street corridor, the Santa Ana Street area, the Lugo Park area off Otis Avenue, or the LA River edge in the southeast near the bike path. A rear unit set deep on a long lot is also where lockouts and lost keys hurt most, since nobody is near the door to help. Rekeying the lock when a key goes missing is a lot easier than dealing with an unknown key holder later.
A few practical notes for shared-driveway properties. A rekey does not cover the mailbox, so if the mailbox lock is shared or the tenant kept the key, look at mailbox lock replacement. A gate that has been padlocked for years may also need attention, and gate lock repair covers that hardware.
Climate is not much of a factor here. Cudahy sits on flat ground beside the LA River channel with a mild inland-plain climate, and salt-air corrosion is not an issue this far from the coast. Summer heat only moves older wood doors a little. If a door has shifted enough to make the deadbolt bind, we will adjust or flag it while we are there, so your new key turns smoothly.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Can you rekey a shop or business on Atlantic Avenue?
Yes. A commercial rekey follows the same logic as a home, with a few more moving parts. Staff come and go, owners change, and a business may have a front door, back door, office, and storage room all on different keys. When someone who held a key leaves, a business lock rekey resets access without replacing every piece of hardware on the premises.
Along the Atlantic Avenue commercial strip, storefronts tend to have a few doors and a lot of people who have touched the keys over the years. Before we rekey, we look at whether the locks are in good shape. Sometimes what looks like a key problem is really a tired storefront lock, and that is a repair question, not a rekey. For businesses with several doors or staff levels, we can talk through a keying layout that gives people only the access they need. Our commercial locksmith page covers the wider range of business work.
Whether you manage one shop or several, tell us how many doors and cylinders you have when you call, and which ones are used daily. That lets us bring the right parts the first time.
Why have Wilshire Lock & Key rekey your locks?
Rekeying is simple work done badly all the time: mismatched pins, keys cut sloppily, locks put back without testing. A few things set how we work apart:
- We have been in business since 1987, so the common lock types in older Cudahy buildings are familiar to us.
- We have a real storefront at 10740 Wilshire Blvd in Westwood, plus mobile service vans. If you need us in person, there is an address.
- We are one company. The person who answers (213) 577-1366 works for us, and the technician at your door does too. There is no dispatch middleman passing the call to whoever is free.
- David, the owner and lead technician, oversees the work. That keeps standards consistent from one call to the next.
- The phone is answered 24 hours a day, 7 days a week, year-round, which matters when a tenant moves out at night or you lose keys on a weekend.
- We tell you when a lock should be replaced instead of rekeyed, even though that changes the job.
What should you check before hiring any locksmith?
California requires locksmith companies to hold a locksmith company license from the Bureau of Security and Investigative Services, known as BSIS, which is an LCO license. Ask any locksmith you are thinking of hiring for that license number, and look it up with BSIS yourself. It takes a couple of minutes and is worth doing before anyone touches your locks.
A few other things are worth watching for. A real company has a local address and a name you can confirm. The technician should explain the work and the quote before starting. And you should be wary of anyone who wants to drill and replace a lock that could simply be rekeyed. If you are not sure about a quote from anyone, including us, ask them to walk you through what drives the number.
If you would like to talk through your property first, you can reach us through our contact page or call (213) 577-1366 and speak with someone directly.
Frequently asked questions
Should I rekey or replace my locks after buying a house?
If the locks are in good working condition, rekeying is usually the more economical route and does the job that matters: it makes every old key useless. Replace instead if a lock is worn, damaged, or not the security level you want. We check each lock first and tell you which way to go.
Will my old keys still work after a rekey?
No. The pins inside the cylinder are changed to match the new key, so the old key will no longer lift them correctly and will not turn the lock. We test with the new key and confirm the old one fails before we leave.
Can you rekey all my house locks to one key?
Usually yes. Most standard residential cylinders can be rekeyed to match each other, so the front door, back door, and other locks work on a single key. Some specialty or restricted locks may not be able to join the set, and we tell you before starting.
I lost every key and I am locked out. Can you still help?
Yes. Getting you inside comes first, and then we can rekey the lock so the lost keys are no longer a risk. If you are locked out right now, our emergency locksmith page explains how we handle that, or call (213) 577-1366 at any hour.
How long does a rekey take?
It depends on how many cylinders are involved and what shape they are in. One door is a short job, while a full house or a multi-unit property on a deep Cudahy lot takes longer. When you call, tell us the number of locks and we will give you a sense of the visit.
I am a landlord. Should I rekey between every tenant?
Many landlords do, because it means the departing tenant and anyone they gave a key to can no longer get in. It is usually the lighter-cost option compared with replacing hardware each time. Questions about lease terms and notice are for you or your attorney; we handle the lock side.
Do you rekey commercial and business locks?
Yes. We rekey storefronts, offices, and back doors, including after staff changes or a change of ownership. Tell us how many doors and cylinders you have, and whether anything looks worn, so we can bring the right parts.
Can I get extra copies of the new keys?
Yes. We can cut spares when we rekey, and if you need more later, our key duplication service covers copies. Restricted or high-security keys may have extra requirements, and we will tell you if yours does.
More locksmith help in Cudahy
Lock Rekey near Cudahy
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
