What counts as a high security lock, and what doesn't?
The phrase gets used loosely. A lock is not high security because the box says so or because it is heavy and shiny. In our trade, a high security lock is a cylinder and key system built to resist the specific ways locks are actually defeated: picking, bumping, drilling, and unauthorized key copying. Everything else is a standard lock with good marketing.
A standard builder-grade cylinder uses simple pins and a common keyway. Anyone with a few cheap tools and some practice can open one, and any hardware store can cut a copy of the key. A true high security cylinder changes that in several ways, and the differences are mechanical, not cosmetic.
We install and replace these for homes and for businesses, and the same principles apply to both. If you have seen the terms home security locks or commercial security locks, they usually point at the same hardware, just fitted to different doors.
- Security pins and tighter tolerances inside the cylinder, so picking takes far more skill and time than it does on a basic lock.
- Bump-resistant design, so the common key-bumping technique does not transfer force to the pins the way it does on a basic cylinder.
- Restricted keyways and key blanks, so copies can only be cut by an authorized source, not by a kiosk or a neighbor with a duplicator.
- Drill and tamper resistance in the cylinder body, often with hardened inserts that protect the shear line.
- A deadbolt or mortise body strong enough that the cylinder is not the easiest thing on the door to attack.
Why Lomita homes and businesses ask for high security locks
Most of the calls we get about this come from a few situations. Someone has lost a key set and does not know who might have found it. A tenant, contractor, or former partner has had a key and nobody can say how many copies exist. A break-in happened nearby, or on the street, and the old lock suddenly feels flimsy. Or a business owner wants to stop employees from duplicating keys at a hardware store.
Lomita is a small city with a lot of older housing, and a lot of the hardware on those doors is as old as the houses. Cottages and ranch homes from the 1940s and 1950s often still carry the original or a decades-old replacement lockset. Upgrading the cylinder is one of the few changes that improves security without altering how the door looks.
A high security lock does not make a door impossible to break through. Nothing does. What it does is remove the quiet, fast, no-damage methods, which are the ones that make up a large share of the real-world attacks on residential entries. It also gives you control over who can ever make a copy of your key, and that matters as much as the pick resistance for many customers.
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Call (213) 577-1366How we handle a high security lock installation, step by step
Whether it is a high security lock installation on a new door or a high security lock replacement on an existing one, the process is the same. We do not sell you a cylinder over the phone and hope it fits. Doors vary, and a good lock on a poorly prepared door is wasted money.
- You call (213) 577-1366 at any hour. We ask what the door is made of, what hardware is on it now, and what worries you most: picking, key control, forced entry, or all three.
- We send a mobile van to your location in Lomita, or you can visit our Westwood storefront at 10740 Wilshire Blvd to look at hardware samples before deciding.
- On site, we inspect the door, the strike plate, the frame, and the existing lock. We tell you plainly if the cylinder is the weak point or if something else is.
- We recommend a specific cylinder and key system, and explain what it resists, what it does not, and how key copies will be controlled.
- We install the new hardware, fit and adjust the bolt so it throws cleanly, and reinforce the strike or frame if it needs it.
- We test every key, hand over the key card or ownership paperwork if your system uses one, and explain how to order additional keys the right way.
Pick-resistant, bump-resistant, restricted: what are you actually buying?
These three terms get blended in advertising, but they describe different protections. Knowing which one you care about helps you avoid paying for features that do not match your risk.
Pick-resistant locks use internal parts, such as security pins and sidebars, that make it hard to set the pins one by one with a pick. Bump-resistant locks are designed so that a bump key, which is a specially cut key struck to jolt pins, does not open the lock. Many quality cylinders do both, but not all do. Ask for both if both matter to you. Restricted keys are about who controls the copies. The blank itself is controlled, and duplicates require authorization, often with proof of ownership.
- If your main worry is a stranger opening the door quietly, prioritize pick and bump resistance.
- If your main worry is lost keys, tenants, or employees making copies, prioritize a restricted key system.
- If your main worry is brute force, the cylinder matters less than the deadbolt, the strike plate, and the door frame.
- If you need many doors on one key, a restricted system can be combined with a master key system so that control stays tight.
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We answer around the clock, every day of the year.
Call (213) 577-1366How much do high security locks cost in Lomita?
We do not quote numbers on a web page, because an honest price depends on specifics we have not seen yet. What we can do is tell you exactly what moves the cost up or down, so that when we quote you on the phone or on site, it makes sense.
The cylinder itself is the biggest variable. Higher grades of pick and bump resistance, patented key control, and restricted blanks all cost more to make, and that shows up in the price. A system that lets you order extra keys only with authorization costs more than one that does not.
The second variable is the door. If your existing deadbolt bore, backset, and edge prep fit the new hardware, installation is simple. If the door is warped, swollen, or poorly drilled, additional work is needed. The third variable is how many doors and how many keys are involved, since re-keying several locks to one restricted system takes more labor than swapping one.
- Grade and brand of the cylinder or full lockset you choose.
- Whether you need a new deadbolt body, or only a new cylinder in an existing one. A deadbolt installation is a different scope than a cylinder swap.
- Number of doors, and whether they will share one key.
- Number of keys you need cut up front, and whether they are restricted blanks.
- Door and frame condition, including any reinforcement needed.
- Time of day and distance. A late-night call to a mobile van costs more to staff than a daytime storefront visit.
- Whether you can keep your existing hardware and simply rekey it, which is often the more economical route when the lock body is already sound but the cylinder is not enough.
High security locks around Lomita: cottages, townhomes, mobile homes, and PCH storefronts
Lomita's housing and commercial mix shapes what we recommend. Here is how it plays out across the ZIP code 90717 and the neighborhoods around it.
On the older cottage and ranch streets, especially on the deep lots that trace back to the city's small-farm era, the front door often has a decades-old lockset, while the back door, a side gate, a garage, or a workshop out back may have almost nothing. Deep-lot properties give someone a long stretch of yard where they can work unseen. We often suggest a high security cylinder on the back and side entries first, and a keyed-alike setup so you are not carrying a ring of different keys. A workshop with tools in it is a good candidate for a restricted key system.
Newer townhome and condo infill is a different situation. Many of these units sit under HOA rules, and rekeying townhome and condo HOA units is a common request. If you want to upgrade to a pick-resistant, bump-resistant cylinder, check what your HOA allows for exterior hardware first, and we can match the finish and fit. Where the original hardware stays, a restricted cylinder swap is usually the least visible change.
Along the Pacific Coast Highway corridor, the Narbonne Avenue corridor, and the Lomita Boulevard corridor, small businesses face a constant mix of foot traffic, employees with keys, and after-hours exposure. A storefront that has seen one too many key copies needs a restricted system more than a heavier bolt. If the front door is worn or misaligned, we may start with storefront lock repair and then add the high security cylinder once the door closes properly.
Several mobile home parks sit along and near PCH. Mobile home entry doors are often lighter-built than a standard house door, and the cylinder has to fit the existing door preparation, so we look at the hardware first. A pick-resistant cylinder can still make a real difference there, as long as the strike and latch are solid.
If you are near Harbor Hills, near Walteria in Torrance, or near Harbor City, we serve you too, with the same mobile approach. The small apartment buildings clustered near Narbonne Avenue and PCH are another place where restricted keys earn their keep: when a tenant moves out, you do not want a copy floating around that you cannot account for. Landlords can read more on our landlord locksmith page, though that is a separate service from this one.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What a high security lock will not fix
We would rather tell you this now than after the install. A high security cylinder protects against some attacks and does nothing against others. If the door is hollow, the frame is split, or the strike plate is held by short screws into soft wood, someone can kick the door in and never touch the lock. A cylinder cannot compensate for that. We check these things and tell you what else needs attention.
Lomita's climate adds a small wrinkle. The city sits at the foot of the Palos Verdes Peninsula a couple of miles from the water, so the marine layer brings damp, though only mild salt-air exposure. Older wood doors commonly swell in the damp months. A swollen door can make a new deadbolt bind or stop the bolt from throwing fully, and a bolt that does not fully extend is not providing the security you paid for. We adjust the fit as part of the installation and tell you if the door itself needs planing or replacement.
If you also want electronic convenience, a smart lock installation is a different product with a different security profile. Some people want a mechanical high security deadbolt on one door and a smart lock on another. We can explain the tradeoffs without pushing either.
Why call Wilshire Lock & Key for high security locks
We have been in business since 1987, and high security hardware is one of those areas where experience matters, because the mistakes are invisible until the day they count. A cylinder that is badly fitted works fine for years until someone tests it.
We are a real company with a storefront at 10740 Wilshire Blvd in Los Angeles and mobile vans that come to you. That means one company, not a dispatch middleman that sends whoever is free. When you call (213) 577-1366, the line is answered 24 hours a day, 7 days a week, year-round. David, the owner and lead technician, oversees the work, and he is the one who decides what is a reasonable recommendation and what is overselling.
We serve 140 cities across Los Angeles and Ventura counties, and Lomita is one of them. For jobs that start as something else, such as a lock replacement after a break-in, or a mobile locksmith call that turns into an upgrade conversation, we can handle the whole thing without handing you off. If you need extra keys down the road, we explain how key duplication works with a restricted system so you are never surprised.
One more thing to ask of any locksmith, us included: California requires locksmith companies to hold a license from the Bureau of Security and Investigative Services, known as a BSIS LCO license. Ask to see the number before work starts. A legitimate company will give it to you without hesitation.
Frequently asked questions
What is the difference between a high security lock and a regular deadbolt?
A regular deadbolt mainly resists brute force, and its cylinder is usually easy to pick, bump, or copy. A high security lock adds a cylinder designed to resist picking and bumping, and usually uses a restricted key that cannot be duplicated freely. The best setup pairs a high security cylinder with a solid deadbolt body.
Can a high security lock still be picked or bumped?
No lock is unbeatable, and we will not tell you otherwise. Pick-resistant and bump-resistant cylinders make those methods much harder and slower, and they push an attacker toward noisier, more visible methods. That is the realistic goal: raise the effort and the risk for anyone trying to get in.
Do I need to replace my whole lock, or can you upgrade just the cylinder?
It depends on the lock body and the door. If your existing deadbolt is sound and fits a compatible high security cylinder, swapping only the cylinder can be the more economical route. If the body is worn or low quality, replacing the whole lock makes more sense. We look at it on site and tell you which applies.
What is a restricted key, and why does it matter?
A restricted key uses a controlled blank and keyway, so copies can only be made by an authorized source, usually with proof of ownership. It matters if you have tenants, employees, contractors, or anyone who has had a key in the past, because it prevents unlogged copies from being made at a hardware store.
Can you install high security locks on my business in Lomita?
Yes. We work on storefronts and other commercial doors, including along Pacific Coast Highway, Narbonne Avenue, and Lomita Boulevard. Depending on the door, we may combine a high security cylinder with door repair or a larger key control plan. See our commercial locksmith services for the wider scope.
Will a high security lock work on an older wood door or a mobile home door?
Often yes, but we check the door first. Older wood doors in Lomita can swell in damp months, and mobile home doors can be lighter-built, so the bore, backset, and strike area all have to be sound. We adjust or reinforce what is needed so the lock actually performs.
Can I get a high security lock installed at night or on a weekend?
Yes. Our phone line at (213) 577-1366 is answered 24 hours a day, 7 days a week, year-round. For a true emergency, such as a break-in where the door will not secure, we can come out and make it safe, then talk through a full high security upgrade when things are calmer.
How do I get extra keys for a high security lock?
Because the key blank is restricted, you cannot take it to a general hardware kiosk. You order additional keys through an authorized source, which we can handle, usually with proof that you own the system. That inconvenience is the point: it is what keeps copies under your control.
More locksmith help in Lomita
High Security Locks near Lomita
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
