What is a master key system, and who needs one in Lake View Terrace?
A master key system builds a hierarchy into your locks. Every lock still has its own key, but a higher-level key opens a defined group of locks, and a top-level master opens all of them. A tenant opens only their own door. A property manager's key opens the doors that are theirs to manage. The owner holds the key that opens everything. This is done by how the lock cylinders are pinned inside, not by adding more locks or more hardware to your doors.
In Lake View Terrace that fits more situations than people expect. Apartment and condo complexes along Foothill Boulevard need a way for management to reach units, laundry rooms and utility closets without carrying a ring of forty keys. A horse property needs gate, tack room, barn and house locks that the owner and a trusted ranch hand can use differently. A small business needs employee key control, so the person who opens in the morning does not hold the same access as the person who owns the building.
This page is about the system itself: design, installation, restricted keyways and key control. Where a neighboring job is a better fit, such as a one-off repair or a single-door rekey, we point you to that page instead of repeating it here.
Why do keys get out of control in the first place?
Almost nobody starts with a key plan. Locks get added one at a time, bought years apart, from different places, each with its own key. Keys get copied at a hardware counter because it is convenient. By the time someone asks who actually has access to what, nobody can answer with confidence.
The warning signs are usually easy to recognize:
- A manager or owner carries a heavy ring where every key opens just one door.
- Former employees, tenants, contractors or ranch hands may still hold working copies, and nobody can say for sure.
- Keys stamped 'Do Not Duplicate' are still copied by any open-counter machine, because the stamp is only a request.
- Doors share nothing, so one lost key forces a hard choice between rekeying a single lock or everything.
- There is no written record of who was issued which key.
- A key that opens the front door also opens the storeroom, the office and the gate, because it was never planned any other way.
How do we design and install a master key system?
The order of work matters. The expensive mistakes in master keying happen when someone starts cutting keys before the access plan is settled. Here is how we run it.
One honest note on scope: some locks cannot be master keyed, usually because the cylinders are worn, are an unusual make, or have no room inside for the extra pin parts. When that is the case we tell you which locks need replacing and why, rather than forcing a system onto hardware that will not hold it. Much of the installation can be done on site by our mobile locksmith service, while larger pinning and key-cutting runs may be handled at our Westwood storefront.
- Survey the property. We list every lock that belongs in the system: doors, gates, padlocks, cabinets, utility rooms. For each we note the brand, keyway and condition.
- Decide the access levels. You tell us who needs to open what, and we draw the hierarchy: individual change keys, group or sub-master keys, a grand master, and sometimes a level above that for larger sites.
- Choose the cylinder platform. Either a standard keyway with master pinning, or a restricted keyway whose blanks are controlled. We also flag any hardware that has to be replaced.
- Write the key schedule. Before any pin is touched, the whole system is laid out on paper as a bitting list, so every key and every lock is accounted for.
- Pin and cut. We rekey the cylinders to the schedule and cut the keys. Every key is tested in every lock, including the locks it should not open.
- Hand over the system. You receive the keys, the written schedule and a plain explanation of how to issue, log and reclaim keys, and how to request additions later.
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Call (213) 577-1366What is a restricted keyway, and are duplicate-protected keys really copy-proof?
A standard keyway uses blanks sold everywhere, which is why a key can be copied in a minute at almost any counter. A restricted keyway uses a profile whose blanks are controlled by the manufacturer and released only through authorized channels, usually against a record or authorization from the property owner. Duplicate-protected keys build on that, often with added patent or legal protection on the key design, so casual copying becomes much harder.
Honest expectations matter here. Restricted systems make unauthorized copying difficult, not impossible, and the level of protection differs from one product line to another. We tell you what a particular line offers before you commit to it. The trade-offs are real too:
- You cannot walk into a hardware store and get a copy, and that includes copies for yourself. Plan your spares at installation.
- Copies run through an authorized process, which takes a little more effort than a counter copy. That is the point, but you should know it going in.
- Protection is strongest when the key schedule and the authorization are kept in the hands of one or two people.
- If you also want hardware that resists picking and drilling, that is a separate layer. We cover it under high-security locks.
What affects the cost of a master key system in Lake View Terrace?
We do not quote a master key system blind, and you should be wary of anyone who does. The work depends on specifics that only show up once the locks are counted. These are the main factors:
- The number of locks and doors in the system, including gates, padlocks and cabinets.
- The number of levels in the hierarchy. A simple two-level setup is less work than a grand master with several groups beneath it.
- Whether your existing cylinders can be master keyed or have to be replaced.
- Standard keyway versus restricted keyway with duplicate-protected keys.
- How many keys are cut, and how many spares and future-expansion positions you want built in.
- The condition of the hardware. Weathered or worn locks take more time and sometimes more parts.
- How spread out the property is, which matters on larger lots with several gates and outbuildings.
- Whether you also want new door hardware, closers or electronic access added at the same time.
How can I keep the cost sensible?
The usually more economical route is to keep good existing hardware and bring it into the system by rekeying the cylinders rather than replacing every lock. Another sensible approach is to put restricted keyways only on the doors that matter most, such as the master-level areas, and use a standard keyway elsewhere. We will tell you plainly where spending more makes sense and where it does not. After the survey you get an estimate based on your actual lock list.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Why call Wilshire Lock & Key for a master key system?
A key system lasts for years, so the company behind it matters. We have been in business since 1987, with a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans that cover Lake View Terrace and 140 cities across Los Angeles and Ventura counties. You deal with one company, with no dispatch middlemen between your call and the technician who does the work.
David, our owner and lead technician, oversees how systems are designed, because the hierarchy is where most of the long-term value, and most of the long-term mistakes, come from. Our phone is answered 24 hours a day, 7 days a week at (213) 577-1366, so you can start the conversation whenever it is convenient. For businesses with broader needs, our commercial locksmith work covers the surrounding hardware too.
One more practical point: California requires locksmith companies to hold a license from the Bureau of Security and Investigative Services, called an LCO license. Ask any locksmith for it before work starts, especially for a system that controls access to your whole property.
How do master key systems fit properties around Hansen Dam, Foothill Boulevard and the canyon edge?
Lake View Terrace, ZIP code 91342, is about 21 miles from our Westwood base, and its properties vary a lot. A master key plan that suits one block would be wrong two streets over.
Along the Foothill Boulevard corridor, apartment and condo complexes are the natural fit for an apartment master key system. A common layout is a grand master for the owner or management company, sub-masters for laundry, trash and mechanical rooms, and a unique change key for each unit. When a tenant moves out, only that unit's cylinder needs rekeying, and the rest of the system stays untouched. Owners who manage several units may also want to look at our locksmith for landlords page.
On the Wentworth Street equestrian corridor, horse-zoned lots tend to have barns, corrals and long gated driveways, which means a lot of locks that all matter. One key family can cover the house, tack room, barn and gate padlocks. The owner's master opens everything, while a ranch hand's key opens only the barn and gate. If the ranch hand leaves, you recover one key or rekey one group, not the whole property.
Weather is a real factor here. Santa Ana winds push dust and grit through the Hansen Dam basin, and that can foul exterior gate locks and padlocks. A master-keyed cylinder has extra pin parts inside, so it tolerates grit and wear less well than a simple one. We recommend weather-appropriate hardware for anything outdoors, and when an existing gate lock is already struggling, we handle that first under gate lock repair so the system is built on something sound. Summer sun also dries out wood doors on unshaded lots, and a door that has shifted can bind a bolt. We check alignment so a door problem is never mistaken for a key problem.
Ranch homes near Little Tujunga Canyon, and canyon-edge parcels on larger, exposed lots, often have a main house, a detached building and several gates all running on different keys. Bringing them under one hierarchy usually makes life simpler. The same applies to properties near Shadow Hills and Kagel Canyon, and to the Hansen Dam area.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What are the downsides of master keying, and when is it the wrong choice?
Master keying adds convenience and control, but it also adds a path. If a master key is lost, every lock it opens is exposed, so the number of masters should stay small and every one should be logged. A master-keyed cylinder has more than one way to open it, which makes it somewhat less resistant to picking than a single-key cylinder. We offset that with better pins, restricted keyways and careful limits on how many keys exist.
It is also not always the right tool. A single-door home with a few keys usually needs simple rekeying, not a hierarchy. If you need to know who entered and when, or you want to cancel one person's access instantly without touching a lock, electronic access control installation may suit you better, and some sites use both. We would rather tell you that than sell you a system you do not need.
What should I have ready before I call?
You do not need a perfect plan. A rough picture is enough for us to start the conversation, and we do the detailed survey ourselves. It helps if you can say:
- How many doors, gates and padlocks you want in the system, even approximately.
- Who needs access to what: tenants, staff, family, a ranch hand, contractors.
- Who is authorized to order keys and approve additions.
- Whether you want copy-restricted keys or a standard keyway.
- Any locks that are sticking, worn or already failing.
- Whether you expect to add doors or units in the next few years.
Frequently asked questions
Can you master key the locks I already have?
Often yes, if the cylinders are in decent condition and are of a type that can be re-pinned for master keying. Some older, worn or unusual locks cannot, and those need replacing. We check each lock during the survey and tell you which is which before any work starts.
What is the difference between a master key system and keyed-alike locks?
Keyed-alike locks all open with the same single key, so everyone with that key can open everything. A master key system gives each lock its own key and adds higher-level keys that open groups of locks. Use keyed-alike for convenience, such as a front door and a side door. Use a master system when different people should have different access.
How many levels can a master key system have?
Most systems use individual change keys, a master key, and a grand master. Larger sites can add sub-master groups or another level above the grand master. More levels means more complexity and more compromise in the pinning, so we keep the hierarchy as simple as your site allows.
Can you set up an apartment master key system for a Foothill Boulevard complex?
Yes. A typical design gives each unit its own change key, with sub-masters for shared areas such as laundry and mechanical rooms and a grand master for management. We ask who is authorized to approve the system and order keys, since that person controls the whole thing.
Can a restricted key be copied at a hardware store?
Generally not at an ordinary counter. Restricted keyways use controlled blanks, and copies go through an authorized process tied to your record. That makes casual copying much harder, though not impossible. Plan your spare keys when the system is installed, and see our key duplication page for how authorized copies work.
What happens if an employee or ranch hand loses a key?
It depends on the level of the key. If it is a change key for one door, we rekey that cylinder. If it is a sub-master, the affected group may need re-pinning. If a grand master is lost, the situation is more serious and we would talk through your options. This is exactly why a hierarchy limits the damage.
Can I add more locks to the system later?
Yes, as long as the system was designed with room to grow and the key schedule has been kept. That is why we hand over written records. Without them, adding a lock can mean re-surveying part or all of the system.
How long does a master key installation take?
It depends on the number of locks and whether any need replacing. A handful of doors can often be finished in one visit, while a larger complex or multi-building property is better scheduled in phases. After the survey we tell you what to expect.
Do you take calls outside business hours?
Yes. Our phone is answered 24 hours a day, 7 days a week, year-round, at (213) 577-1366. Design and installation work for a full system is planned and scheduled, but you can call at any hour to start the conversation or to deal with an urgent key problem.
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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.