What are high security locks, and does a San Marino home need them?
A high security lock is a cylinder, and often the bolt and strike plate around it, built to resist the quiet ways locks get defeated: picking, bumping, drilling, and unauthorized key copying. A standard cylinder from a home center is designed to be affordable and easy to key. A high security cylinder is designed to be difficult to manipulate, and it is paired with a restricted keyway, which means the key blanks are not sold openly and copies require authorization from whoever controls the key records.
Whether you need one is a judgment call, and we will tell you plainly when you do not. For many houses, a properly installed, good-grade deadbolt is a sensible baseline. High security cylinders make the most sense when key control matters as much as the lock itself: you want to know exactly how many keys exist, you want nobody to be able to duplicate them on a whim, or you simply want a front door that takes real effort to defeat without a key.
San Marino has a particular profile for this. The city is almost entirely single-family homes on large lots, so every exterior door, side gate, and garage entry is a door that someone has to secure on its own. That adds up to a lot of cylinders and, over the years, a lot of keys in a lot of hands.
The situation: period doors, large lots, and keys that pile up
Most of the homes here were built in the 1920s and 1930s in Spanish Colonial Revival, Tudor, Monterey, and other period styles. Many still carry their original mortise locksets and period door hardware. That hardware is often handsome and well made, but it was keyed for a different era. Original cylinders can be worn, and over several owners, contractors, and household helpers, nobody can say with confidence how many keys are out there.
The good news is that a mortise lockset takes a mortise cylinder, and many mortise cylinders can be swapped for pick-resistant, restricted-key versions without removing the original lock body or changing the look of the door. Whether that works on your door depends on the lock body and its condition, which is why we want to see it before promising anything. Sometimes the right answer is a high security cylinder in the original hardware. Sometimes the original lock body is too worn to be worth upgrading, and a different approach is more honest.
Summer heat adds its own wrinkle. San Marino sits inland in the San Gabriel Valley, with hot, dry summers, and heat can swell wood doors and pull older mortise hardware out of alignment. A bolt that drags or a latch that no longer lines up with its strike is not a cylinder problem, and a high security cylinder will not cure it. We check door fit and alignment as part of the job, because a lock that does not engage fully is not protecting anything.
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Call (213) 577-1366How do we install or replace high security locks, step by step?
The process is the same whether we are upgrading one front door or a whole property. What changes is how many doors there are and what we find when we look at them.
- You call (213) 577-1366 and tell us what you have: the type of door, the age of the home, and what is prompting the upgrade, whether that is a recent purchase, a lost key, or a general wish for tighter control.
- A technician looks at each door and its hardware: the cylinder, the lock body, the bolt, the strike plate, the frame, and how the door sits in the opening.
- We explain your options in plain language, including which parts of the existing hardware are worth keeping and which are not, and what a restricted-key system would mean for who can order copies.
- We choose the cylinders and, if needed, the deadbolts or strikes that fit your doors, and we confirm the keying plan: which doors share a key, which do not, and how many keys you want cut.
- We install the hardware, reinforce the strike and frame where the door needs it, and adjust the door so the bolt throws fully and the latch catches cleanly.
- We test every lock with the new keys, with the door open and closed, and make sure the old keys no longer work on the replaced cylinders.
- We hand over the keys and any key-control paperwork, and explain how to order additional copies later so you are not caught off guard.
Pick-resistant, bump-resistant, drill-resistant: what the terms actually mean
Marketing around locks can get vague. Here is what these terms mean in practice, and what to ask about when you compare options.
- Pick-resistant locks use security pins, tighter tolerances, and sometimes additional locking elements inside the cylinder so that standard picking techniques take far more skill and time. They are harder to pick, not impossible.
- Bump-resistant locks are built so that a bump key, a cut key struck to jar the pins, does not line up the internals the way it does in a basic cylinder. Some designs achieve this with a secondary locking element or a different internal layout.
- Drill-resistant construction uses hardened inserts or plates in the cylinder and housing so that drilling the face takes longer and is more likely to fail.
- Restricted keys use a keyway and blank that are controlled by the maker, with copies available only through authorized sources. This is the part that stops casual duplication.
- Grade ratings for the deadbolt itself, such as ANSI/BHMA grades, describe the strength of the bolt and housing. A strong cylinder in a weak deadbolt, or a weak frame, leaves the weak point exactly where it was.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How much do high security locks cost in San Marino?
We do not quote numbers on a web page, because the honest answer depends on your doors. We would rather explain what moves the cost so you can judge any quote you receive, ours included. What drives it:
- How many cylinders you are changing, and whether they are for a single door or the whole property.
- Whether we are swapping only the cylinder or the whole lock, deadbolt, or mortise body. Keeping good original hardware and upgrading only the cylinder is usually the more economical route when the lock body is sound.
- The security level and keyway system you choose. A restricted system with key-control paperwork costs more than a pick-resistant cylinder with a standard keyway, and more again for options that include additional protections.
- Door and frame condition. A swollen, misaligned, or worn door may need adjustment, a reinforced strike, or frame work for the new lock to perform.
- Keying plan. One key for every door, a few separate keys, or a master-key arrangement all affect the work and the number of keys cut.
- Timing. A planned visit during regular hours is simpler than a late-night call, and after-hours service can be priced differently.
- Whether you order extra restricted keys now or later.
Where high security locks make sense around San Marino
San Marino is about 22 miles from our Westwood storefront, and we serve the city's 91108 ZIP code with mobile vans. The places where we see high security locks making the most sense follow the way the city is laid out.
On the estate streets around Lacy Park, a lockout is a common reason someone calls us in the first place. If you already have a pick-resistant, drill-resistant cylinder, we do not drill it. A skilled technician works it open or gets you in another way, and your lock stays intact. That is one practical argument for choosing quality hardware: a lockout becomes a service call rather than a lock replacement. For anyone shut out right now, our house lockout service covers that situation directly.
Near San Marino High School, homes change hands, and a full-house rekey after a sale is one of the most natural moments to step up to restricted keys. You do not know who holds keys from the previous owner, their contractors, or the agents involved. Moving to a restricted system at that point means the old keys are retired and new copies come only through you. If a standard rekey is all you need, our lock rekeying service is the lighter-cost option, and we will say so.
Along the Huntington Drive corridor, large fenced lots mean side doors and gates carry as much weight as the front door. Those locks are exposed to weather and see heavy daily use, so quality matters, and we cover that work separately in our gate lock repair service. Homes around the Huntington Library area, the El Molino Viejo and Old Mill area, and the Oak Knoll border near Pasadena share the same character: older construction, period hardware, and plenty of doors worth looking at one by one.
Because San Marino's inland climate is far from the coast, salt-air corrosion is not a concern the way it is near the beach. Heat is the bigger factor, mostly through the effect on wood doors and old mortise hardware, which is why we check alignment on every door we upgrade.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Commercial security locks for the Mission Street business district
The Mission Street business district is small, but the shops there have the same needs as any storefront: a front door that locks reliably, a back door that does not get forgotten, and a way to control who holds keys when employees come and go. Commercial security locks use the same ideas as the home versions, restricted keyways and pick-resistant cylinders, but the hardware around them is built for heavier use, with commercial-grade deadbolts, strikes, and sometimes a master-key arrangement.
If you run a shop there and want tighter key control, we start by asking who currently holds keys and how you would like that to work. A restricted keyway means a former employee cannot simply have a copy made at a corner kiosk. If your needs go beyond the cylinder, our commercial locksmith work covers door hardware, closers, and key systems for the rest of the building.
Why call Wilshire Lock & Key for high security locks?
We have been in business since 1987, and high security hardware is not something we learned recently. Our storefront is at 10740 Wilshire Blvd in Westwood, with mobile service vans that come to you in San Marino and across 140 cities in Los Angeles and Ventura counties.
You are dealing with one company, not a call center that hands your job to whichever contractor is available. There is no dispatch middleman between you and the person who shows up. David, the owner and lead technician, oversees the work, which matters on a job like this because the right decision is often the one that costs you less: keeping a sound original lock body, for example, rather than replacing everything.
Our phone line is answered 24 hours a day, 7 days a week, year-round. High security upgrades are usually planned, but the reason for them often is not. A break-in attempt, a lost set of keys, or a sudden move can leave you needing to change what protects your doors right away, and you can call (213) 577-1366 at any hour.
What a high security lock cannot do, and what to ask any locksmith
A high security cylinder will not stop someone from kicking in a weak door, breaking a window beside it, or prying a thin frame. If the strike plate is held by short screws into soft wood, the best cylinder in the world is protecting very little. That is why we look at the whole door, and why some jobs include a reinforced strike or a new deadbolt installation alongside the cylinder.
If you are weighing a keyless or connected lock instead, that is a different category with its own tradeoffs, and our smart lock installation page covers it. If a lock is simply worn out past the point of upgrading, our lock replacement service is the right starting point.
One more thing worth knowing: California requires locksmith companies to hold a license from the Bureau of Security and Investigative Services, known as a BSIS LCO license. Ask any locksmith you consider for their license number, and verify it with the state before you let them work on your doors. That applies to us as much as anyone else.
Frequently asked questions
What is the difference between a high security lock and a regular lock?
A regular cylinder uses simple pins and a common keyway, so it can be picked or bumped by someone with basic tools and its keys can be copied almost anywhere. A high security lock uses tighter tolerances, security pins or secondary locking elements, and usually a restricted keyway, so it resists picking and bumping and controls who can duplicate the key.
Can I put high security cylinders in the original mortise locks on my older San Marino home?
Often yes. Many original mortise locksets accept a standard mortise cylinder, and high security versions exist in that format. It depends on the make and condition of the lock body, so a technician has to look at it. If the body is worn beyond reason, we will say so rather than upgrade something that will not hold up.
Are bump-resistant locks really bump-proof?
No lock is proof against everything. Bump-resistant designs are built so that a bump key does not work the way it does on a basic cylinder, and they are a real improvement. They are one layer, and they work best with a solid door, a reinforced strike, and good key control.
Can I get extra copies of a restricted key at the hardware store?
Generally no, and that is the point. Restricted key blanks are controlled, and copies come only through authorized sources with the right paperwork or ID. Plan how many keys you need up front, and call us when you need more, so you are not stuck without a spare.
Should I get high security locks when I buy a home in San Marino?
It is a good time to think about it. You cannot know who holds keys from the previous owner, their contractors, or earlier occupants. A rekey retires old keys at the lighter-cost end. A high security system goes further by also controlling who can copy the new ones. We will talk through which fits your situation.
Will a high security lock prevent me from getting locked out?
No, but it changes what a lockout costs you. You can still be locked out of any lock. With quality hardware, a technician can often get you in without drilling or destroying the cylinder, so the lock survives. If it happens late at night, call (213) 577-1366 and someone will answer.
Do you install commercial security locks for Mission Street shops?
Yes. We handle commercial-grade security locks, restricted keyways, and master-key arrangements for storefronts and small offices. Tell us how many doors you have and who holds keys, and we will recommend what fits your setup.
How long does it take to install high security locks?
It depends on how many doors you have, whether the hardware needs adjustment, and whether restricted keys must be ordered. A single cylinder swap on a sound door is a short visit. A whole-house job with reinforced strikes and a keying plan takes longer. We tell you what to expect after seeing your doors.
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High Security Locks near San Marino
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.