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Wilshire Lock & Key

24/7 locksmith · Walnut, CA

Lock Installation in Walnut, CA

Wilshire Lock & Key handles lock installation in Walnut, CA around the clock. We fit new front door locks, deadbolts, mortise sets, lever handles and commercial hardware on homes and businesses in 91789, and we answer the phone 24 hours a day, 7 days a week at (213) 577-1366.

  • Since 1987
  • Westwood storefront + mobile vans
  • A person answers, day or night
Drilling a clean bore for a new lockset in a wooden door

What does a proper lock installation actually involve?

Most people think installing a lock means swapping one handle for another. Sometimes it is that simple. Often it is not. A lock is only as good as the door it sits in, and a new lock on a badly prepared door will bind, sag, or fail to latch long before the hardware wears out. Our job is to get the lock, the door, the strike plate and the frame working together as one system.

New lock installation covers a few different situations. You might be fitting a lock on a door that has never had one, such as a side gate, a garage entry door or an interior office. You might be replacing worn hardware with something stronger. Or you might be building out a new door, where the bore holes, edge latch mortise and strike have to be cut correctly from the start. Each of those is a different job with different tools, and we tell you which one you actually have before we start.

This page is about putting new locks in. If your existing lock still works and you only want the keys changed, that is a different service, and you can read about lock rekeying instead. If the lock is broken or worn out and needs to come out, lock replacement is the closer match. Installation is for when the opening needs a lock fitted, and fitted correctly.

What kinds of lock installation do we do in Walnut?

We install locks on doors of every type, for homes and for businesses. The list below covers what Walnut customers ask for most.

  • Front door lock installation: knob sets, lever sets, handlesets and the deadbolt that goes with them, matched to your door's thickness and bore layout.
  • Door lock installation for interior and secondary doors: garage entry doors, patio and side doors, home offices, and storage rooms.
  • Residential lock installation on new or remodeled homes, including multi-door keyed-alike setups so one key runs every exterior door.
  • Commercial lock installation: office doors, storeroom doors, and shop entries, including heavier-duty cylindrical and mortise hardware.
  • Security lock installation: higher-grade deadbolts, reinforced strikes, longer screws and door-edge reinforcement where the frame is the weak point.
  • Mortise lock installation: cutting or fitting the pocket in the door edge and setting the full mortise body, trim and cylinder.
  • Lever lock installation: lever handles for accessibility, for commercial use, or simply because you prefer them to round knobs.

How we handle a lock installation, step by step

Here is how a typical visit goes. The details change by door, but the order does not.

  1. You call (213) 577-1366. A person answers, day or night, and asks what door it is, what material it is made of, what is on it now, and what you want it to do. Photos help if you can send them.
  2. We tell you what we expect the job to involve and what will drive the cost, and we give you a clear time for arrival when you call. If you are not sure what you need, we help you work that out before anyone drives out.
  3. On site, we inspect the door before we touch the hardware: thickness, bore size, backset, edge condition, how the door hangs, and whether the frame is solid where the strike goes.
  4. We confirm the lock choice with you. If the door suggests a different grade or style than you had in mind, we explain why and you decide.
  5. We prepare the door. That may mean using existing bores, enlarging or truing them, cutting a mortise pocket, or reinforcing a thin or damaged edge. We do not force a lock into a door that is not ready for it.
  6. We fit the lock, set the latch and strike, and align everything so the bolt throws freely with the door closed and does not need to be lifted or pushed to lock.
  7. We test it repeatedly: key from outside, thumbturn or lever from inside, latch with the door swinging firmly, and bolt engagement into the frame.
  8. We hand over the keys, show you how any special features work, and tell you plainly if anything else on the door deserves attention.

Locked out or need a locksmith now?

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

Call (213) 577-1366

How much does lock installation cost in Walnut?

We do not quote numbers on a web page because the honest answer depends on the door in front of us. What we can do is tell you exactly what moves the price, so a quote over the phone makes sense to you.

The usual lighter-cost situation is a standard residential door that already has the right bores, where we are fitting a standard-grade lock. The cost climbs as the job asks for more materials or more labor.

  • The lock itself: basic-grade, mid-grade and high-security hardware are very different products, and finish and brand change the price too.
  • The number of locks: a single deadbolt is a different visit than keying every door in a house alike.
  • Door preparation: a pre-drilled door is quick. A solid door that needs new bores, or a door edge that needs reinforcing, takes more time.
  • Mortise work: cutting a mortise pocket or fitting a mortise body is more involved than a bored lock and is priced accordingly.
  • Door and frame condition: a warped door, loose frame or damaged jamb has to be addressed or the new lock will not perform.
  • Commercial requirements: heavier-duty hardware, specific function types, and any need to match existing keying.
  • Timing: planned work during normal hours is usually the more economical route. Late-night and urgent calls carry extra for the hour and the urgency.
  • Travel: Walnut is about 39 miles from our Westwood storefront, and we will explain how that figures into your visit when you call.

Mortise and lever lock installation: what is different

Mortise and lever locks get their own mention because they are installed differently from the common bored lock found on most tract-home doors.

A mortise lock sits inside a rectangular pocket cut into the edge of the door, rather than in two round holes. The lock body holds the latch and deadbolt together, and the trim and cylinder connect to it from each side. Mortise locks are older in design, very sturdy when properly installed, and still common on commercial and some custom residential doors. The catch is that the pocket has to be cut cleanly and to the right depth. A sloppy mortise weakens the door edge and gives you a lock that rattles. If your door was prepared for a mortise lock already, installation is straightforward. If it was not, expect extra time and a more careful quote.

Lever lock installation is mostly about the handle and the function. Levers are easier to operate with a full hand, a wrist or an elbow, which is why they are common in commercial and accessibility-minded installations. They are not a separate lock type so much as a trim choice, available on bored sets and mortise sets alike. The things to settle before we install are the function (passage, privacy, entry or storeroom), the handing of the door, and whether you want a return-style lever that will not catch on clothing or bags.

For a shop or office, we also check how the door is rated and used. Doors with special requirements, such as fire-rated assemblies, have limits on how much can be cut or drilled. We will tell you if that applies rather than modifying something we should not. For related hardware such as closers and exit devices, see our page on commercial door hardware.

Locked out or need a locksmith now?

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

Call (213) 577-1366

Lock installation across Walnut's neighborhoods

Walnut, ZIP 91789, is mostly single-family tract homes from the 1970s through the 1990s, many on hillside lots and many inside HOA-governed communities. That shapes the installation work we see. In areas like the Snow Creek area, the Lemon Creek area and Walnut Hills, the doors are usually the original wood or steel units from when the tracts went up, and the hardware on them is often decades old. When owners decide to upgrade, it tends to be a whole-house project: new front door lock installation, matching deadbolts, and consistent finishes front to back.

A common Walnut scenario is the new owner in an HOA community. You have just closed on the house, you do not know how many people have copies of the old keys, and you want solid hardware on every exterior door. Sometimes the right answer is installing new locks on every door, and sometimes rekeying is enough. We will look at what is on the doors and tell you which makes sense. If the existing locks are in decent shape, rekeying is often the lighter-cost route. If they are worn, mismatched or low grade, new installation is the better use of the money. One practical note: some associations have rules about the appearance of exterior hardware, so it is worth checking your HOA's guidelines on finish and style before you pick a lock.

Heat matters here too. Hot inland-valley summers cause doors and frames to expand, and a lock that fit in March can bind in August. We pay attention to strike alignment and bolt clearance during installation so the lock works when the door is swollen as well as when it is not. Santa Ana dust also gets into exterior hardware, which is one reason we favor solid-bodied exterior locks with decent weather sealing on the doors that face the weather.

Away from the residential tracts, small businesses along the Amar Road corridor, the Grand Avenue corridor and the north edge of the Valley Boulevard corridor have their own needs: office and shop doors that need commercial lock installation, storeroom locks, and hardware that holds up to daily traffic. Properties in the south Walnut hills near Brea Canyon Cutoff, and the larger equestrian-zoned lots, often add barns, side gates and outbuildings to the list. For gates that already have a lock needing work, see gate lock repair.

Choosing the right lock before we install it

A good installation begins with the right product. A few minutes spent choosing saves you from a second visit.

Grade matters. Locks are graded for durability and strength, and a lock meant for an interior closet is not the same as one meant for a front door. For exterior doors we steer toward the higher grades because the cost difference is usually small compared with the extra strength and lifespan. If your concern is forced entry rather than convenience, look at our page on high-security locks, which covers pick-resistant cylinders, restricted keyways and reinforced strikes.

Function matters. An entry set locks from the outside with a key. A privacy set locks from inside only. A passage set does not lock at all. A storeroom function stays locked until a key opens it. Telling us what the door is for avoids buying the wrong function.

Door and frame matter. Thickness, backset, bore diameter and the material of the jamb all affect what will fit. We measure rather than guess.

Keying matters. Decide whether you want every lock on one key, whether any door needs its own key, and whether you ever want to add restricted copies later.

If you are considering a keypad or app-controlled lock, that is a separate conversation with different power and mounting questions, covered on our smart lock installation page.

Locked out or need a locksmith now?

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

Call (213) 577-1366

Why call Wilshire Lock & Key for installation in Walnut?

We have been in business since 1987. David, the owner and lead technician, oversees the work, and the people who answer your call work for the same company that comes to your door. There is no dispatch middleman who takes your call and hands it to whoever is free.

We run a storefront at 10740 Wilshire Blvd in Westwood alongside our mobile service vans, so we carry a wide range of hardware and can get the right parts rather than making do with whatever happens to be in the truck. We serve 140 cities across Los Angeles and Ventura counties, and Walnut is one of them. Our phone is answered 24 hours a day, seven days a week, year-round, at (213) 577-1366.

We also believe in telling you the truth about the job. If your door is the problem, we say so. If a cheaper lock will do, we say that. If you need a different service than the one you called about, we point you to it.

California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith you hire for it. That is a fair question, and you are right to ask it of us as well.

When a new lock is not the right answer

Sometimes people call for installation when something else would serve them better. If you were locked out after a break-in and need the door secured quickly, our emergency locksmith service is the right place to start, and we can talk about a permanent upgrade once the door is safe. If a key snapped in an existing lock, that is an extraction job, not an installation. If a lock is only sticking, sometimes the fix is adjusting the strike or cleaning the cylinder instead of buying hardware.

We would rather solve the actual problem than sell you hardware you do not need. That is why the first call is a conversation, not a sales pitch.

Frequently asked questions

Can you install a lock on a door that has never had one?

Yes. We measure the door, drill the bores and edge cut for the lock you choose, fit the latch and strike, and align the frame. A door with no prior hardware simply means a little more preparation than one that is pre-drilled.

Can you install the lock I already bought?

Usually, yes. Bring the model details or send photos before we come. We check that it suits your door, and if it is a lower-grade lock on an exterior door, we will tell you honestly so you can decide.

How long does a lock installation take?

A standard lock on a prepared door is a short job. Doors that need new bores, a mortise pocket cut, or frame repair take longer. When you call, we describe the job and tell you what to expect.

What is the difference between installing a lock and rekeying one?

Installation fits new hardware to a door. Rekeying keeps the existing lock and changes its internal pins so old keys stop working. If your locks are in good shape, rekeying is often the more economical route.

Do you install mortise locks?

Yes. We fit mortise locks on prepared doors and can cut the pocket on doors that were not prepared. Cutting a mortise takes extra care and time, so it affects the quote.

Can you install locks on a commercial door in Walnut?

Yes. We handle commercial lock installation on office, shop and storeroom doors, including heavier-duty hardware. Fire-rated doors have limits on modification, and we will tell you if that applies.

Will my HOA allow the lock I choose?

That depends on your association. Some have rules about exterior hardware finish or style. Check your HOA guidelines first, and tell us what they say so we can choose a lock that complies.

Do hot summers in Walnut affect new locks?

Heat can make doors and frames expand, which can cause a lock to bind. We check strike alignment and bolt clearance during installation so the lock works in hot weather as well as cool.

Do you install deadbolts separately from the handle set?

Yes. A deadbolt is often added alongside a handle or lever set. Our page on deadbolt installation covers that work in more detail.

Can I call at night for lock installation?

Yes. We answer the phone 24 hours a day, 7 days a week at (213) 577-1366. Urgent security needs get handled first, and planned installations can be scheduled for normal hours.

More locksmith help in Walnut

Lock Installation near Walnut

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

Last updated 2026-10-11.

Ready for lock installation in Walnut?

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

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