What makes a lock a high security lock?
The term gets used loosely, so here is what we mean by it. A high security lock is a cylinder, and usually the deadbolt around it, built to resist the common ways a standard lock gets defeated: picking, bumping, drilling, and unauthorized key copying. The cylinder inside is different from the builder-grade one that ships in most doors. It has tighter tolerances, extra internal locking elements, hardened inserts where a drill would normally bite, and a key that is harder to duplicate.
Two features matter most. The first is pick and bump resistance in the mechanism itself. The second is a restricted keyway, meaning the key blank is controlled, so a copy can't be cut at a hardware-store kiosk on a whim. Some systems back that up with a patent or a registered-owner arrangement for key orders; others rely on a proprietary key profile. We tell you which type a given product is before you buy it, because the difference affects how you order spare keys later.
What a high security lock is not: magic. No lock is pick-proof or burglar-proof. High security hardware raises the skill, time, and noise needed to get past a door, and that is usually enough to send an opportunist somewhere easier. It does its best work as part of a door and frame that are also built to hold.
Why do Norwalk homeowners and businesses upgrade?
Norwalk is a 1950s post-war suburb, block after block of single-story stucco tract homes, and plenty of them still carry original mid-century door hardware or a basic replacement cylinder that went in decades ago. Over that many years, keys multiply. Previous owners, relatives, contractors, a neighbor who watered the plants once: nobody can say how many copies of a standard key are out there, and a standard key can be copied by anyone with a few minutes at a machine.
A high security cylinder with a restricted key fixes the second half of that problem in a way that ordinary rekeying alone does not. These are the situations that most often lead people to call us about it:
- You bought or inherited a home and want a front door you can trust, not just a re-pinned lock that still takes an easily copied key.
- There was an attempted break-in, and you can see scratches, drill marks, or damage around the keyway.
- You are a landlord or property manager who wants control over who can duplicate keys to a unit.
- You run a small business and employee turnover means keys walk out the door.
- A detached garage, ADU, or side door holds tools, equipment, or belongings you care about, and it currently has the weakest lock on the property.
- You read about bumping and picking and want a straight answer on whether your existing lock is exposed.
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Call (213) 577-1366How do pick-resistant and bump-resistant locks actually work?
A standard pin tumbler lock uses simple pin stacks that line up at a shear line when the right key goes in. That simplicity is also its weakness. Pick tools can set pins one at a time, and a bump key can jolt the pins into alignment with a quick tap. High security cylinders add layers that make both harder.
Different manufacturers use different approaches, and we install more than one type so we can match the lock to your door and your needs. The common building blocks are:
- Security pins: spool, serrated, and similar shapes that bind and give false feedback to a pick instead of setting cleanly.
- A second locking element: a sidebar, rotating discs, or a secondary pin row that must also be satisfied before the plug turns, so alignment of the main pins alone is not enough.
- Tighter tolerances and restricted keyways: the key profile is narrow or unusual, which makes picking awkward and blocks cheap blanks.
- Bump resistance: designs that interrupt the energy transfer a bump key relies on, or that need a second action a bump key can't supply.
- Drill and pull resistance: hardened steel inserts in the cylinder and a housing designed to resist the common attacks on the face of the lock.
- Key control: the blank is restricted, and in some systems a card or registered authorization is needed to order more keys.
How we install or replace high security locks
Most jobs are straightforward. We bring parts to your door with our mobile vans, or you can come to the storefront at 10740 Wilshire Blvd in Westwood if you would rather pick hardware in person. Here is how a typical high security lock installation goes:
- You call (213) 577-1366 and tell us which doors are involved, what they are made of, and what you are worried about. If you can describe your current lock or text us a photo, even better.
- We look at the door, the frame, and the existing hardware. A strong cylinder in a weak door is a poor use of money, so we tell you what we see before anything gets installed.
- We recommend a system that fits the door and your habits. That includes whether you want one key for several doors, who should be allowed to order duplicates, and whether the lock needs to be keyed alike with anything you already own.
- We install the cylinder or the full deadbolt, check the bolt throw and strike alignment, and adjust until the lock operates cleanly with no forcing.
- We test every key under real use, then walk you through how spare keys are ordered, what any key card or authorization means, and who should hold it.
- If the job turns up a loose strike plate, a short screw, or a door that does not close squarely, we point it out and explain the fix. It is your call whether to do it.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What affects the cost of high security lock installation in Norwalk?
We don't quote numbers on a web page, because the honest price depends on the specifics of your door. What we can do is tell you what moves the cost up or down, so nothing surprises you on the phone.
- The system you choose: a pick-resistant cylinder that drops into your existing deadbolt costs differently than a full high security deadbolt, and patented, controlled-key systems cost differently than proprietary-profile ones.
- Cylinder only versus complete lock: if your current deadbolt is in good shape and fits a better cylinder, swapping the cylinder is usually the more economical route. If the deadbolt itself is worn or low quality, replacing the whole unit makes more sense.
- Number of doors and key sets: several doors keyed alike, or extra restricted keys, adds parts and programming time.
- Door and frame condition: a door that was bored off-center, a sagging frame, or a damaged strike area can need extra work before a new lock will sit right.
- Key control level: registered or card-controlled keys carry a different setup than keys that are restricted by profile only.
- Part availability: common cylinders are on our vans. Less common systems may need to be ordered, which affects scheduling more than anything else.
- When you call: after-hours and emergency visits are priced differently than scheduled work, and we say so up front.
High security locks across Norwalk: what we see locally
Norwalk's ZIP code 90650 covers a mix of housing, and the right lock upgrade looks different depending on where you live. In the older tract neighborhoods, a common call comes after a home sale. In the post-war tracts off Rosecrans Avenue, new owners often start by wanting the old keys rendered useless. That alone can be handled by rekeying the locks, but many choose to go a step further and fit a pick-resistant, restricted-key cylinder on the front door and any side or garage door at the same time. That way the new key cannot be casually copied by anyone who ends up holding one.
Along Pioneer Boulevard and Imperial Highway, apartment clusters have a different concern. A tenant's unit door and a landlord's shared entrances are used by many people over the years. Near Cerritos College, around Alondra Boulevard and Studebaker Road, rentals turn over with the school calendar, and key copies tend to circulate with them. A restricted keyway on a unit's entry door is a straightforward way to keep track of who actually has a key.
Closer to the Civic Center district at Norwalk Boulevard and Imperial Highway, and around Norwalk Town Square at Firestone and Pioneer, shops and small offices are more concerned with after-hours entry and employee keys. We cover that side of things below.
Climate matters a little too. Norwalk sits on a flat inland coastal plain with a mild climate, and salt-air corrosion is minimal, so cylinders here generally don't suffer the way they would near the beach. The one local quirk is that warm summers can make older wood doors and garage side doors swell and stick. A high security lock does not like being forced. If your door binds in July, we will fix the fit of the door first, so the bolt isn't fighting the frame every time you turn the key.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What about commercial security locks and rental properties?
Commercial security locks follow the same logic as home security locks, with a few more demands: heavier use, more key holders, and often a need for a hierarchy of keys. For a shop at Norwalk Town Square or along Firestone Boulevard, a restricted-key cylinder on the back door and the stockroom is a sensible place to start, because those are the doors an ex-employee's spare key would open. Our broader commercial locksmith work covers the rest of the building hardware.
If you have several doors and several people, a master key system built on high security cylinders lets one key open what it should and nothing it shouldn't, without a pocketful of keys for the owner. The restricted blanks also stop staff from making their own copies.
Landlords have their own considerations: turnover, shared doors, and the need to prove who had access. If you manage rentals in Norwalk, our page for locksmith services for landlords explains how we handle rekeying, key control, and multiple units. For small businesses along Norwalk Boulevard, gates and padlocks are often the weak link, and we can talk through restricted-key padlocks and gate hardware during the same visit.
Why call Wilshire Lock & Key for high security locks?
We have been in business since 1987, and we serve 140 cities across Los Angeles and Ventura counties, Norwalk among them. Our base is the storefront at 10740 Wilshire Blvd in Westwood, roughly 26 miles from Norwalk, and our mobile vans do the driving. When you call (213) 577-1366, you reach us directly at any hour, any day of the year.
Here is what that means in practice. We are one company, with no dispatch middleman reselling your call to whoever is closest. David, the owner and lead technician, oversees the work. The people who tell you what to buy are the people who stand behind the installation. We also tell you when a high security lock is more than you need. Not every closet door needs one, and we would rather sell you the right hardware for the front door than the most expensive hardware for all of them.
One more point worth knowing before you hire anyone for this kind of work. California requires locksmith companies to hold a BSIS LCO license, issued through the Bureau of Security and Investigative Services. Ask any locksmith for that license number before they touch your locks, and that includes us. High security locks are an investment in your safety, and the person installing them should be willing to be checked.
If you are comparing options, you may also like to know that our 24-hour locksmith service is available if a break-in or attempted entry means you need the lock changed tonight, not next week.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366When a high security lock is not the right first move
Sometimes the strongest cylinder is not where your money does the most good. A deadbolt with a short strike plate and half-inch screws can be kicked in whatever the cylinder is made of. A hollow door, a worn frame, or a glass panel next to the handle changes the picture. We look at those first, and we say so plainly.
If your real issue is that you've lost track of keys, a replacement of the lock hardware may be all you need, or a new deadbolt installation if there is no real deadbolt on the door today. If you want keyless entry, that is a different decision, and our smart lock installation page covers the tradeoffs. A good pick-resistant cylinder can also sit alongside a smart lock on a second door. We will help you sort out which combination fits the way you live.
Frequently asked questions
What is the difference between a high security lock and a regular deadbolt?
A regular deadbolt has a throw bolt and a standard pin tumbler cylinder that a skilled person can pick or bump, and its key can be copied almost anywhere. A high security lock adds hardened parts, extra internal locking elements, tighter tolerances, and a restricted key. The deadbolt and the cylinder are separate things, and often the cylinder is where the upgrade matters most.
Are pick-resistant locks really pick-proof?
No. No honest locksmith will tell you any lock is pick-proof. Pick-resistant locks use security pins, a second locking element, and tighter tolerances so picking takes more skill, more time, and specialized tools. The goal is to make your door a poor target. We explain the specific resistance features of whatever product we install, and we do not oversell it.
Can you make my existing lock bump-resistant?
Often yes. If your deadbolt is good quality and the cylinder is replaceable, we can swap in a bump-resistant, pick-resistant cylinder and leave the rest of the hardware alone. If the lock body is worn, low quality, or an odd fit, we will recommend replacing the whole lock instead. We confirm which applies when we see the door.
Can you install high security locks on a rental in Norwalk?
Yes, though who is allowed to authorize the change depends on your lease. A landlord can install high security locks on units and shared doors. A tenant should check with the landlord or property manager first. We can document the keying so you know who can order duplicates, which is helpful when units turn over frequently.
How do I get extra keys for a restricted-key lock?
It depends on the system. Some use a restricted profile, so duplicates must come from us or another authorized source. Others require a registered owner or key card. We explain the exact process when we install, and we can cut extras at the time or later. Our key duplication service covers restricted blanks where the system permits it.
Will a high security lock fit my older Norwalk home's door?
Usually it will. Most homes built in the 1950s have standard bored holes that accept modern deadbolts and cylinders. Old doors sometimes have been drilled unevenly, or swell and stick in summer, which can affect how a lock sits. We check the door and frame before installing and fix alignment issues so the new lock works smoothly.
Do you only install high security locks during business hours?
No. We answer the phone at (213) 577-1366 around the clock, every day of the year. If you need a lock changed after a break-in, we can talk through emergency options. Planned upgrades are usually easier to schedule during the day, since you can choose hardware calmly and we can order a specific system if needed.
Is a high security lock worth it for a small business?
Often, for the right doors. Back doors, stockrooms, and any entrance with many key holders benefit most, especially if you have had staff turnover. Restricted keys stop copying, and a master key system can organize access. We would rather protect the three doors that matter than put expensive cylinders on every door in the building.
More locksmith help in Norwalk
High Security Locks near Norwalk
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
