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Wilshire Lock & Key

24/7 locksmith · Pacoima, CA

Master Key System in Pacoima, CA

Wilshire Lock & Key designs and installs master key systems in Pacoima, CA: key hierarchies that let one key open many doors while each tenant, employee, or department keeps its own. We also set up restricted keyways. Our phone line, (213) 577-1366, is answered 24 hours a day, seven days a week.

  • Since 1987
  • Westwood storefront + mobile vans
  • A person answers, day or night
Lock cylinder, follower and pinning kit on a workbench during a rekey

What is a master key system, and who in Pacoima needs one?

A master key system is a plan for who can open what. Every lock in the building still has its own key, called a change key. On top of that, one or more master keys are cut to open a chosen group of those locks. The person who needs access to everything carries one key, and the person who needs access to one room carries one key.

The mechanics are simple to describe. A standard pin tumbler cylinder has one position where the pins line up and let the plug turn. A master-keyed cylinder is built with a second position that works for the master key. That second position is what makes the system convenient, and it is also why the system has to be planned carefully rather than improvised.

You probably need one if any of these sound familiar: a property owner with several rental units who is tired of carrying a ring of identical-looking keys, a shop or office where staff need different levels of access, a building with a back storage area, an equipment room, and a main entrance that should not all open for everyone, or an organization that has lost track of who holds which key.

If you only have one door and one or two people, you do not need a master key system. A straightforward lock rekey is the lighter-cost option, and we will say so when that is the honest answer.

The real problem: too many keys and no record of who has them

Most of the calls that turn into master key projects start the same way. Keys have piled up over the years. Someone copied a key at a hardware counter, a former employee never returned theirs, a tenant moved out and nobody changed the cylinder, and now nobody can say with confidence who can get in where.

The second common problem is the opposite: a system that was installed once and never documented. The original installer is gone, nobody has the bitting records, and adding a new door means guessing. A master key system without records is hard to extend and hard to trust.

A third problem is the quiet one. A key marked Do Not Duplicate is not protected at all. The stamp is a request, not a barrier, and a lot of copy shops will cut that key anyway. If key control matters to you, the protection has to be built into the lock, which is what a restricted keyway does. We cover that further down.

Fixing any of these starts with understanding how people actually move through your building, not with a sales pitch for hardware.

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How we plan and install a master key system, step by step

The order matters. Cutting keys is the last step, not the first. Here is how we approach a job.

  1. Walk the property and list every opening. We note each door, gate, cabinet, and storage room, what lock is on it now, and what condition it is in. Hardware that is worn or mismatched changes the plan.
  2. Talk through who needs access to what. We ask about staff, tenants, vendors, cleaners, and anyone else who holds keys, and about who should never be able to open certain doors.
  3. Design the hierarchy on paper. That means deciding on change keys for individual doors, master keys for groups, and, in larger buildings, a grand master above them. We also decide how much room to leave for future doors so the system can grow without being redone.
  4. Choose the cylinders and keyway. Some existing locks can be re-pinned into the system. Others cannot, because of brand, age, or condition, and need new cylinders. If you want duplicate-protected keys, this is where we pick a restricted keyway.
  5. Build and install. We pin the cylinders to the plan, install them, and test every key against every lock it should open and every lock it should not.
  6. Deliver the records and the rules. You get the bitting list or key schedule, a clear record of which key goes to whom, and our suggestions on issuing, tracking, and recovering keys. Keep that record somewhere secure and off the premises if possible.

Restricted keyways and duplicate-protected keys: what they do, and what they do not

A restricted keyway is a keyway whose blanks are not sold openly. The key profile is controlled, and in most restricted systems the manufacturer or distributor only supplies blanks and cuts additional keys when an authorized person in your organization requests them. That is what people mean by a restricted key system or duplicate-protected keys: copying is not impossible in every sense, but it cannot be done casually at a corner kiosk.

Restricted systems are worth the added planning when you need real key control, for example when employees come and go, when a building has sensitive storage, or when several people hold master-level keys. The benefit is that a lost or unreturned key cannot easily turn into a dozen copies.

Here is the honest limit. A restricted keyway makes duplication harder and slower; it does not make a lock unpickable or bump-proof by itself. If your concern is forced entry or picking, we should talk about high-security locks for the specific doors that matter most. Also, the control only works if someone in your organization actually manages authorization, since a system nobody supervises is no more secure than an ordinary one.

One more tradeoff worth knowing: a master-keyed cylinder has extra pinning, which gives it a slightly more complex profile than a single-key cylinder. For most small and mid-sized properties that is a reasonable trade for the convenience. For doors that protect something really valuable, we sometimes recommend keeping that door off the master system entirely.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

Business, apartment, and employee key control: three different setups

The same hardware idea gets used very differently depending on who is holding the keys.

  • Commercial master key system: usually a few tiers. Front-of-house staff get keys to public areas, managers get a master for their department, and the owner holds the top key. We often pair this with our commercial locksmith work on door hardware.
  • Apartment master key system: each unit has its own change key, and a building master lets the owner or manager reach every unit for repairs and emergencies. Turnover is the main issue here, since rekeying a single unit between tenants is routine and should not disturb the rest of the system. If this is you, our locksmith for landlords page covers the broader picture.
  • Employee key control system: the goal is accountability. A restricted keyway, a clear issue-and-return log, and a short list of master holders do most of the work. If you want to know exactly who opened a door and when, a keyed system will not tell you; that is the point where access control installation becomes the better tool, and the two are often combined.
  • Mixed properties: some owners have a shop on the ground floor and rental space above. We can design separate hierarchies that share a single top key if you want that, or keep them fully independent if you do not.

What affects the cost of a master key system in Pacoima?

We do not quote numbers on a web page because a master key system is a custom job, and any figure given without seeing your doors would be a guess. What we can do is tell you what moves the cost up or down, so you can plan.

  • Number of doors and cylinders. More openings mean more cylinders to pin, install, and test.
  • Reusing existing hardware versus replacing it. If your current cylinders can be re-pinned into the system, the job is usually the more economical route. If they are worn, mismatched, or an unsupported brand, new cylinders are needed.
  • Conventional versus restricted keyway. Restricted keyways involve controlled blanks and authorization, which adds to the cost, and is justified when real key control is the goal.
  • Depth of the hierarchy. A single master over a group of doors is simpler than multiple tiers with a grand master and separate zones.
  • Room for growth. Leaving expansion capacity in the design costs a little more up front and saves a full rework later.
  • Quantity of keys. Every key cut for every holder adds up, and restricted keys cost more to produce than ordinary ones.
  • Door condition. A cylinder cannot work properly in a sagging door or a worn latch. Where hardware needs repair, we point it out and quote that separately.
  • Timing. Planned work during business hours is different from an urgent after-hours call.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

Master key systems around Pacoima: what we see on the ground

Pacoima sits in ZIP code 91331 and is a mix of small-lot single-family homes from the 1940s and 1950s, the 1950s-era San Fernando Gardens public housing community, scattered newer infill townhomes, and commercial stretches along Van Nuys Boulevard, Glenoaks Boulevard, and Laurel Canyon Boulevard. That mix affects how a master key system gets designed here.

Along the Mural Mile on Van Nuys Boulevard, storefronts often need a few different access levels: the front door, a back or alley door, a storage area, and sometimes an office. Many older storefronts also have security screen doors or window grilles, which have their own latches that are not part of the master key system unless we deliberately rekey them to match. We can walk the door and decide which pieces belong in the hierarchy. For worn storefront hardware that needs work before it can join a system, our storefront lock repair page explains the options.

Near the San Fernando Gardens area, rental units are a major part of the housing picture. A property owner with several rental units nearby is the classic case for an apartment-style master key system: one key per unit for the tenant, one master for the owner or manager, and a clear plan for rekeying a single cylinder at turnover without touching the rest.

In the Whiteman Airport district, the work is different. Gates, fenced areas, and hangar-adjacent doors may call for a restricted keyway so that a key left behind or lent out cannot be copied easily. Exposed gates take punishment from weather, and our gate lock repair page covers that side of the work.

The climate matters too. Pacoima is one of the hotter parts of the Valley in summer, and Santa Ana winds funnel through the nearby passes. Heat and dry wind age door seals, weatherstripping, and exposed hardware. A master-keyed cylinder has tighter tolerances than a single-key one, so a dry, sun-baked, or gritty lock that is already sticking is a poor candidate for re-pinning. On exposed doors, we check the cylinder's condition before we commit to reusing it.

Pacoima is roughly 19 miles from our Westwood storefront, and our mobile vans handle site visits so we can do the walk-through at your property.

Why call Wilshire Lock & Key for master key work

Master key work rewards experience, because the mistakes do not show up on day one. They show up three years later when you add a door or lose a key. We have been in business since 1987, and David, the owner and lead technician, oversees how our systems are designed.

You deal with one company. There is no dispatch middleman who takes your call and hands the job to a stranger. We have a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans, so planning, cylinder work, and key cutting stay in-house.

We also tell you when a master key system is not the right answer. Sometimes a key duplication cleanup and a simple rekey does the job.

One practical note: California requires locksmith companies to hold a BSIS LCO license. Ask any locksmith you are considering for their license number before work begins. That is a fair question to ask anyone who will have your keys and your records.

Call (213) 577-1366 any time. The line is answered 24 hours a day, seven days a week, year-round.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

What to have ready before you call

You do not need a full plan to start the conversation. A rough count of doors helps, along with what brand of locks you have now if you know it, and who currently holds keys. Photos of the cylinders and a short list of who needs access to what are enough for us to talk through a realistic approach. If you have an older system with paperwork, bring it, since original key records can save real time and cost.

Frequently asked questions

What is the difference between a master key and a change key?

A change key opens one lock, such as a single apartment or office. A master key opens a group of locks that each have their own change key. Larger systems add a grand master above that, which opens several groups.

Can you convert the locks I already have into a master key system?

Often, yes, but it depends on the brand, age, and condition of your current cylinders. Some can be re-pinned into the system, while others need replacement. We check them on site and tell you which is which before any work starts.

Is a master key system less secure than separate keys?

It adds some complexity to the cylinder, and a master key is a higher-value key, so it needs careful handling. For most homes and businesses the convenience is worth it. For especially sensitive doors, we may suggest keeping them off the master system.

What does restricted keyway mean, and does Do Not Duplicate on a key do the same thing?

A restricted keyway uses blanks that are not sold openly, so extra keys generally require authorization. A Do Not Duplicate stamp on an ordinary key does nothing mechanical. Many shops will still cut it, so it is not real key control.

Can I use a master key system for my rental units near San Fernando Gardens?

Yes, this is a common use. Each unit gets its own key, and you hold a master that opens all of them. When a tenant leaves, we can rekey that one unit's cylinder to a new change key without redoing the system. Our work on lock rekeying fits right alongside this.

How do I keep track of which employee has which key?

Start with a written key log, a short list of master holders, and a restricted keyway so keys cannot be copied freely. We provide the key schedule when we finish. If you need to know who opened a door and when, we would talk about adding access control.

Can I add more doors to the system later?

Yes, if the system was designed with room for growth and we or you have the key records. That is why we plan expansion capacity up front and hand you the documentation. Without records, adding a door gets harder and may require re-checking existing locks.

How much does a master key system cost?

It depends on how many doors you have, whether your existing hardware can be reused, whether you want a restricted keyway, how many tiers the hierarchy has, and how many keys are cut. We do not give numbers without seeing the property. Call (213) 577-1366 and we can talk through what applies to you.

Do you come to Pacoima, or do I need to come to your shop?

We come to you. Our mobile vans serve Pacoima and the surrounding areas, and the walk-through of your doors is done at your property. Our storefront in Westwood is there if you would rather drop off cylinders or discuss a plan in person.

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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.

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