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Wilshire Lock & Key

24/7 locksmith · Diamond Bar, CA

Locksmith for landlords and property managers in Diamond Bar, CA

Wilshire Lock & Key handles rekeys, master key systems, key control and lockouts for Diamond Bar landlords and property managers. We answer 24/7 at (213) 577-1366, work from a Westwood storefront with mobile vans, and have been in business since 1987. Turnover work is planned; lockouts and failures are not, and we cover both.

  • Since 1987
  • Westwood storefront + mobile vans
  • A person answers, day or night
Mobile locksmith van at night with amber work lights on a city street

What does a Diamond Bar landlord actually need from a locksmith?

Most locksmith pages are written for someone standing outside a locked door. Landlords and property managers have a different problem: keys that multiply, tenants who move out without returning everything, and a building where one bad lock becomes a maintenance ticket, a security worry and sometimes a liability question. The work repeats, and doing it consistently matters more than doing any single job quickly.

We have been working in Southern California since 1987, and the pattern is familiar. The owner who rekeys every unit at turnover rarely has key-control trouble. The owner who hands the previous tenant's key to the next tenant and hopes for the best eventually does. This page covers the recurring jobs we handle for rental owners: turnover rekeys, master key systems, after-hours lockouts, and the small repairs that keep a unit rentable.

If something is urgent right now, call (213) 577-1366. The line is answered around the clock, every day of the year, and the 24-hour locksmith page explains how after-hours calls work.

How does a tenant turnover rekey work?

Rekeying changes the internal pins of a lock so old keys stop working and a new key takes over, without replacing the hardware. For a rental it is usually the more economical route compared with buying new locks for every door, and it keeps the hardware you already chose and installed.

Here is how a typical turnover job goes when you plan it ahead:

  1. You tell us the addresses, how many locks each unit has, and the date the unit becomes vacant.
  2. We confirm what is on each door: entry deadbolt, knob or lever, and any secondary locks such as sliding door locks, side gates or storage doors.
  3. A technician rekeys each cylinder to a new key pattern, or to your existing master system if the property already has one.
  4. We test every lock with the new key and cut the number of copies you need: one set for the incoming tenant, a manager's set, and spares.
  5. Anything worn, sticking or damaged gets flagged on the spot, so you can decide between repair and replacement now instead of learning about it from a tenant complaint.

When is rekeying the wrong call?

Rekeying only makes sense when the lock itself is in good shape. A cylinder that has been forced, a deadbolt that no longer throws all the way, or a knob that rattles loose will just be a worn lock with a new key. In those cases replacement is the sounder decision, and we will say so plainly. Our lock rekeying page goes through the mechanics in more detail.

Timing matters too. Turnover windows are tight, and an owner who gives us the move-out date in advance can have the rekey done in the gap before the next move-in. Planned work is calmer and easier to scope fairly than a rush the afternoon a tenant is supposed to arrive.

Locked out or need a locksmith now?

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

Call (213) 577-1366

How do master keys and key control work in a multi-unit property?

A master key system lets each tenant's key open only that tenant's door, while a manager's key opens many. Once you manage more than a handful of doors, carrying one key instead of a ring is a real convenience. Design is what separates a good system from a headache: every added level of master keying adds complexity, and a poorly planned one can quietly weaken security. Our master key system page covers how we lay them out.

A few principles we work from with small multifamily owners:

  • Decide who needs access to what before you cut anything. A manager, a maintenance contractor and a cleaner rarely need the same reach.
  • Where practical, use key blanks that are harder to copy casually. What is realistic depends on the hardware already on your doors, and we will tell you what is possible.
  • Keep a written record of who holds which key. A simple log beats memory every time.
  • If a master key goes missing, rekey the system rather than a single door. One lost master is a problem for every unit it opens.
  • Treat key duplication as the weak point. Most key-control failures start with a copy nobody tracked.

What should a lockout policy look like for tenants?

Lockouts are the call property managers dread, mostly because of when they happen: late evenings and weekends. A written policy prevents arguments. Settle the questions in advance and put the answers in your lease or house rules.

Here is what we suggest you decide:

  • Who authorizes the call: does the tenant phone you first, or may they call us directly? Many managers prefer to approve first.
  • Who pays: the tenant, the owner, or a split such as owner-paid for the first incident only. Whatever you choose, state it in writing.
  • How we confirm the right to enter: we ask for proof that the person belongs in the unit, such as ID matching the lease or authorization from the manager, before we open any door.
  • What counts as a repeat lockout: a tenant locked out several times may need a spare key, or the lock may be failing and needs attention.
  • What happens if non-destructive entry is not possible: we tell you before drilling, since replacing the lock then becomes part of the job.

What does an apartment lockout call involve?

For the single-door situation, our apartment lockout page explains the process. We aim to open the door without damaging the lock whenever the hardware allows it. When the hardware is already worn or the door has been forced, the lock may need repair or replacement afterward, and we will lay that out before work begins.

If you have a written policy, give it to us when you call. It is far easier for us to follow your rules than to guess at them, particularly when a tenant is on the phone upset and you are not on site.

Locked out or need a locksmith now?

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

Call (213) 577-1366

Which recurring repairs keep a rental running?

Between turnovers the calls are usually small. They are also the ones that become big if they sit.

The most common small jobs for rental owners:

  • Binding deadbolts and sagging doors. Often the fix is alignment, a strike plate or a hinge rather than a new lock.
  • Tenant-lost mailbox keys. Before we touch anything, confirm who owns and controls the mailbox, because that determines what can be changed. Our mailbox lock replacement page has the details.
  • Pedestrian and driveway gate latches that no longer catch. See gate lock repair for how we approach them.
  • Keys snapped off in a lock. A broken key is a repair job, not a reason to replace the lock outright.
  • Entry doors with no deadbolt, or a deadbolt that has been loose for a year. These are worth fixing before a problem happens.

What affects the cost of locksmith work for landlords?

We do not quote numbers on a web page because the job decides the answer. What moves the cost, in roughly the order it matters:

  • How many locks and how many units are in the job. Batching several doors in one visit is usually the more economical route than separate trips.
  • Rekey or replace. Rekeying is typically the lighter-cost option when the lock is sound.
  • Hardware grade. A basic builder-grade deadbolt and a high-security cylinder are very different products.
  • Master key complexity. More levels and more doors mean more planning and more cutting.
  • Time of day. Planned daytime work differs from an after-hours or weekend emergency.
  • Distance and access. Diamond Bar is about 42 miles from our Westwood storefront, and gated or restricted properties can add coordination.
  • Condition of the existing locks. Worn, forced or corroded hardware may need parts.

Why call Wilshire Lock & Key for rental property work?

Property owners tend to value the boring things: a phone that gets answered, the same company showing up, and straight explanations. Here is what we can honestly put on the table:

  • In business since 1987, which means we have seen most of what rental hardware can do to an owner.
  • A storefront at 10740 Wilshire Blvd in Westwood plus mobile service vans, so there is a real place behind the phone number.
  • One company, with no dispatch middlemen. The person you reach is part of the company doing the work.
  • David, the owner and lead technician, oversees the work.
  • Phones answered 24 hours a day, 7 days a week, year-round at (213) 577-1366.

What do Diamond Bar rental properties look like to a locksmith?

Diamond Bar was master-planned from the 1960s onward, so much of its housing is 1960s to 1980s hillside tract homes. That age matters for rental owners. Original hardware, or hardware replaced several tenants ago, is common, and a unit where nobody has looked at the locks in years is a candidate for a thorough turnover check.

Condo and townhome clusters sit along Golden Springs Drive and Diamond Bar Boulevard, and HOA-managed communities are widespread across the city. If you rent a unit in an HOA, read the association's rules on exterior doors and hardware before changing anything visible from outside. HOA townhome and condo rekeys along Golden Springs Drive are a regular kind of work here, and a rekey keeps the existing hardware in place, which usually sidesteps finish and appearance questions.

The guard-gated Country Estates holds large custom homes on estate lots. A rental there tends to involve estate gate hardware and higher-security locks rather than basic builder-grade cylinders. Because the community is guard-gated, tell us in advance which property we are going to and who will be present so access can be arranged. For the lock side, see our high security locks work.

The climate adds its own quirks. Diamond Bar's inland hills have hot summers, and wind funnels through Brea and Tonner Canyons. The realistic effects on hardware are heat expansion of doors, which can make a deadbolt bind in summer, and dust packing into exterior keyways. If a tenant calls in July about a lock that suddenly will not turn, a swollen door or a dusty cylinder is a good first suspect.

Smart locks are a growing request for hillside tract homes. For a single-family rental, a keypad deadbolt can mean fewer physical keys to chase between tenants, since codes can be changed instead of keys recut. They add batteries and a setup step to manage, so we talk through whether it suits your tenant mix. Our smart lock installation page explains the details. If a unit is rented short term, our vacation rental locksmith page covers the different access needs.

We work across 91765 and its neighborhoods, including Diamond Point, South Pointe, Summitridge, and the Sunset Crossing Road area, along with the Golden Springs Drive, Diamond Bar Boulevard, Grand Avenue and Brea Canyon corridors. If your holdings include retail space in the shopping centers along Diamond Bar Boulevard and Grand Avenue, we handle storefront and commercial hardware as well.

Locked out or need a locksmith now?

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

Call (213) 577-1366

What should you ask any locksmith before hiring them?

California requires locksmith companies to hold a BSIS LCO license, issued through the Bureau of Security and Investigative Services. Ask any locksmith you consider for the license number, including us, and check it yourself rather than taking anyone's word for it.

A few other questions are worth asking before you give a company your keys and your tenants' addresses:

  • Will the person answering the phone be the company that sends the technician, or is the call passed to a third party?
  • How do you confirm someone has the right to open a door?
  • Will you explain the scope of the job before work starts?
  • Can you describe what you would do for my kind of building, rather than a generic job?

Frequently asked questions

Can you rekey several units in one visit?

Yes. Give us the addresses, the number of locks per unit and the dates the units are vacant, and we can plan the visit as a batch. Grouping doors at one property is usually the more economical route than separate trips, and it keeps every unit on a consistent key plan.

Should I rekey or replace the locks between tenants?

If the locks are in good shape, rekeying is usually the lighter-cost option and keeps your existing hardware. If a lock is worn, forced, loose or no longer throws cleanly, replacement is the better decision. We check each lock at turnover and tell you which is which.

Can you set up a master key system for a small building?

Yes, including smaller properties where a manager wants one key for several doors. The design depends on your hardware, who needs access and how much key control you want. Call (213) 577-1366 and describe the property, and we will explain what is practical.

What do you need before opening a tenant's door?

We ask for proof that the person has a right to be in the unit, such as ID that matches the lease or authorization from the manager or owner. If you have a written lockout policy, share it when you call so we can follow it.

Do you work with HOA-managed properties in Diamond Bar?

Yes. HOA communities are widespread in Diamond Bar, and rekeying keeps your existing hardware in place, which often avoids appearance questions. Check your association's rules on exterior hardware before replacing visible locks or deadbolts.

Are smart locks a good idea for a rental?

They can be, especially for single-family rentals where changing a code is easier than recutting keys. The trade-offs are battery upkeep and a setup step for each tenant change. We go through your situation and tell you whether a standard rekeyable deadbolt is the simpler choice.

Do you answer after hours if a tenant has a break-in or a broken lock?

Our line is answered 24 hours a day, 7 days a week, year-round at (213) 577-1366. If a door will not secure after a break-in or a lock has failed, call and tell us what you are seeing so we can plan the right repair.

How far is Diamond Bar from your shop?

Diamond Bar is about 42 miles from our storefront at 10740 Wilshire Blvd in Westwood, and we serve it with mobile service vans. For planned work, batching doors and giving us dates in advance makes the visit more efficient.

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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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