Is It Cheaper to Replace Locks or Rekey Them?

Rekeying a lock means a trained locksmith changes the internal pin configuration inside your existing cylinder so that your old keys no longer work. The hardware stays on your door; only the tumblers change. Because you are paying for labor and a small set of replacement pins rather than an entirely new lock, rekeying is almost always the more cost-efficient path when your current hardware is in good working condition. For a standard Kwikset or Schlage door knob lock or deadbolt, rekeying is a straightforward process that an experienced locksmith can complete in minutes per cylinder. If you have multiple locks you want on a single key — a very common request from LA landlords managing multi-unit properties — rekeying all of them to match is far more practical than buying new hardware for every door.

Replacing a lock, by contrast, makes sense when the hardware itself is damaged, outdated, or simply not up to the security level you need. A door knob lock that has been forced, corroded, or drilled out needs new hardware regardless of cost. The same is true if you are upgrading from a basic passage knob to a deadbolt, or switching from a decades-old mortise lock to a modern high-security cylinder. The factors that shape the final quote for either service include the type and grade of lock involved, whether specialty parts need to be sourced, the time of day the work is needed, and the travel distance to your location. A1 Los Angeles Locksmith confirms an exact up-front price before any work begins, so there are no surprises on either service.

A mortise lock is a full lock body that sits inside a pocket (the 'mortise') cut into the door itself, rather than being surface-mounted like a cylindrical deadbolt. You will find mortise lock hardware on many older Los Angeles properties — think pre-war apartment buildings in Koreatown, early 20th-century commercial storefronts along Broadway in Downtown LA, or original Craftsman doors in Highland Park. Because the lock body is integrated into the door, the question of how to replace a mortise lock is more involved than swapping a standard door knob lock. The internal mechanism, the faceplate, the spindle, and the strike plate all need to align precisely, and dimensions vary between manufacturers and eras. Knowing how to replace a mortise lock with a modern door knob — a common upgrade request — requires assessing whether the existing mortise pocket can accommodate a cylindrical lock set or whether the door itself needs modification.

For a mortise lock in good mechanical condition, rekeying the cylinder is straightforward for a skilled locksmith even if it is not a DIY-friendly job for most homeowners. The cylinder is removed, repinned, and reinstalled. When the mortise lock body is worn — stiff latch, sluggish bolt, cracked housing — replacement is the smarter investment. A professional assessment on-site is the fastest way to determine which path applies to your specific door, because mortise hardware is not one-size-fits-all. Our team works with mortise lock hardware across residential and commercial properties throughout Los Angeles and can tell you within minutes whether a rekey or a full replacement is the right answer for your door.

Homeowners frequently search 'how hard is it to rekey a lock' hoping to save time and money with a DIY kit. The honest answer: rekeying a basic Kwikset deadbolt with a consumer rekey kit is manageable for a careful, patient person with the right tools and about an hour to spare. You need a plug follower, the correct replacement pins for your lock brand, and a keying kit. However, the process is less forgiving than it looks on video. Drop a spring, install a pin stack in the wrong order, or damage the retaining clip, and you can end up with a lock that is harder to operate than before — or one that simply will not turn at all. For a single, standard deadbolt where you have the current working key, a DIY rekey is a reasonable option if you are comfortable with small mechanical tasks.

The calculation changes quickly in several common LA scenarios. Rekeying a mortise lock cylinder requires removing the cylinder from the lock body — a step that varies by manufacturer and is easy to get wrong. Rekeying multiple locks to a single master key requires precise pin-depth matching that is difficult without professional tools. And if you no longer have the working key — after a lockout, a lost key set, or moving into a new place where you were never given all the copies — a locksmith needs to pick or decode the existing cylinder before rekeying, which is not a DIY option. In those cases, professional rekeying is not just easier; it is the only path that does not risk damaging your hardware or your door.

There are situations where replacing locks is the genuinely better value, even though the upfront cost is higher. If you are asking how to replace a door knob with a lock — meaning you want to add a keyed deadbolt where there was previously only a passage knob — that is a replacement project by definition, and it meaningfully improves your home's security. Similarly, if your existing hardware is a low-grade builder's lock installed when the building was constructed decades ago, upgrading to a Grade 1 deadbolt delivers security improvements that a rekey of the original hardware simply cannot provide, because you are improving the physical strength of the lock body itself, not just the key combination.

Rekeying is also not the answer when a lock has been tampered with, when the cylinder shows signs of picking or drilling, or when a door knob lock mechanism has internal wear that makes the bolt unreliable. In those cases, a new lock is a genuine long-term savings over continued repair attempts. If you are dealing with a commercial property and considering how to replace a mortise lock with a modern door knob to simplify key management, a qualified locksmith can evaluate whether your door frame and thickness support the conversion — because not every door does, and attempting it without that assessment can damage an irreplaceable solid-wood historic door. If you are unsure which direction makes sense for your property, call (631) 380-4138 and our team will walk you through the assessment before any commitment is made.

Not every lock decision happens on a Tuesday afternoon with time to research. A significant share of the calls we receive at A1 Los Angeles Locksmith are emergency locksmith situations — a lockout at midnight in Culver City, a broken key in a mortise lock cylinder on a Friday evening in Burbank, or a landlord needing locks changed same-day after a difficult tenant situation in Boyle Heights. In emergency locksmith scenarios, the priority is getting you back into your property safely and securely, and the cost factors shift to reflect the time of day, urgency, and travel logistics rather than a simple rekey-versus-replace comparison.

How much does an emergency locksmith cost near me — and how much will an emergency locksmith cost overall — are fair questions, and the honest answer is that the final quote depends on your specific situation: the type of lock, the hardware condition, whether parts are needed, and the time the call comes in. What does not change is our commitment to giving you a confirmed price before any work starts. We are a 24/7 mobile locksmith, which means we come to you anywhere in the Los Angeles area at any hour. Our emergency locksmith services include residential lockouts, commercial lockouts, rekeying after a break-in, mortise lock service and replacement, door knob lock replacement, deadbolt installation, master key system setup, car lockouts, ignition repairs, high-security lock upgrades, mailbox lock service, garage lock service, safe opening, lock repairs after forced entry, and more. Whether you need a simple rekey at your Pasadena apartment or a full mortise lock replacement at a commercial property in West Hollywood, we arrive equipped to handle it on the spot.

How much does a locksmith cost in Los Angeles, and how much is the average locksmith charge? These are the questions nearly every caller leads with, and the straightforward answer is that no honest locksmith can give you a single flat number without knowing what the job involves. The factors that determine your quote include the type of lock (standard cylindrical, mortise lock, high-security, electronic, or automotive), the number of locks being serviced, whether parts need to be ordered or are carried on the truck, the time of day, and the distance to your location within the LA metro area. A rekey of a single basic deadbolt during daytime hours will carry a very different quote than an emergency mortise lock replacement at 2 a.m. in a commercial building — and both quotes are legitimate given what each job requires.

One question we hear from drivers and homeowners alike is 'Can AAA do locksmith services?' AAA does offer roadside assistance that includes basic automotive lockouts for members, but residential lock service, rekeying, mortise lock work, and commercial locksmith needs fall outside what a roadside program covers. For anything beyond a standard car lockout, a dedicated professional locksmith is the right call. A1 Los Angeles Locksmith handles both automotive and residential or commercial needs, so one call to (631) 380-4138 covers the full range — and we answer 24/7.

As the original A.S.A.P. locksmith serving the Los Angeles area, our mobile team is stocked and trained to handle an extensive range of lock and security needs on the spot, without a return visit. Our emergency locksmith services include: residential lockouts, commercial lockouts, mortise lock rekey, mortise lock replacement, cylindrical deadbolt installation, door knob lock replacement and installation, bedroom door knob lock replacement, high-security deadbolt upgrades, master key system setup and rekeying, lock repair after break-in or forced entry, broken key extraction, car lockout service, truck and SUV lockout service, motorcycle lockout service, ignition cylinder repair and replacement, car key duplication, transponder key programming, key fob replacement, mailbox lock replacement, garage door lock service, padlock opening and replacement, safe opening, safe lock replacement, electronic and smart lock installation, commercial door lock upgrade, and multi-unit rekey projects for landlords and property managers.

Each service begins with an on-site assessment and a confirmed price before work starts. We do not dispatch and then revise the quote once we are at your door. Whether you are a renter in Los Feliz who just moved in and wants the cylinders rekeyed, a building manager in Downtown LA dealing with a mortise lock that has seen better days, or a driver locked out of your car near LAX at midnight, the process is the same: call, confirm the quote, get the job done.

The simplest framework: if your lock hardware is solid, your current keys work, and you just need to invalidate old copies, rekeying is almost certainly your most cost-efficient move. If your hardware is damaged, worn, or inadequate for your security needs, replacement delivers better long-term value. Mortise lock situations deserve a professional eye because the hardware is more complex, the replacement process is more involved, and the wrong call can damage an irreplaceable door. For everything else — door knob locks, standard deadbolts, bedroom locks — the condition of the hardware and your security goals together determine the right answer.

If you are still unsure after reading this, the fastest path to clarity is a quick call. A1 Los Angeles Locksmith is available 24 hours a day, 7 days a week, across the full Los Angeles area. Describe your situation, and we will tell you what we recommend and why before you commit to anything. Call (631) 380-4138 — we answer 24/7.

Do we offer 24/7 emergency locksmith services? Yes, without exception. Our mobile team operates around the clock, every day of the year, including holidays. There is no situation where a lockout or urgent lock failure falls outside our service hours. How quickly can a locksmith arrive? Our response time depends on your exact location within the LA metro area and current traffic — this is Los Angeles, after all. We will give you an honest estimated arrival window when you call, and we stay in contact if conditions change. We do not promise a specific minute count and then show up late — we prefer to be accurate rather than optimistic.