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Wilshire Lock & Key

24/7 locksmith · Montebello, CA

Deadbolt Installation in Montebello, CA

Wilshire Lock & Key installs and replaces single and double-cylinder deadbolts in Montebello, CA, around the clock, seven days a week. We align the bore, latch and strike so the bolt throws smoothly. Call (213) 577-1366 any hour and we'll talk through your door and the right deadbolt type.

  • Since 1987
  • Westwood storefront + mobile vans
  • A person answers, day or night
New deadbolt with the bolt thrown, fitted flush in a wooden door edge

What does a properly installed deadbolt actually do?

A deadbolt does one job: it drives a solid steel bolt into the door frame, and it only moves when a key or thumbturn moves it. A standard doorknob latch is spring-loaded, and it can often be pushed back with a thin piece of plastic. A deadbolt has no spring to defeat. That is the whole reason it is worth having.

The hardware is only half of it, though. A deadbolt that is drilled crooked, set into a frame with short screws, or mounted on a door that has swollen and shifted will bind, stick, or sit so loosely that a hard shove opens the door anyway. Most deadbolt trouble we see is installation trouble, not product trouble. The bolt has to line up with the strike, the strike has to be anchored into solid framing, and the door has to close without being pulled or lifted into place.

This page covers deadbolt installation and deadbolt replacement for Montebello homes, apartments and small buildings: which type to choose, how we put it in, what moves the cost, and what to watch for. If you only want old keys to stop working on a lock that is otherwise fine, that is a different job, and lock rekeying is the page for it.

Single-cylinder or double-cylinder: which deadbolt belongs on your door?

A single-cylinder deadbolt has a keyed cylinder outside and a thumbturn inside. It is what most homes use and what we install most often. A double-cylinder deadbolt has a keyed cylinder on both sides, so it takes a key to open it from the inside as well as the outside.

Double cylinder deadbolt installation makes sense in a few specific situations, and it comes with a real tradeoff. This is how we walk people through the decision:

  • Glass near the lock. If the door has a window, sidelight or decorative glass within arm's reach of the thumbturn, someone can break the glass, reach in and turn it. A keyed inside cylinder closes that gap.
  • The emergency-exit tradeoff. If you cannot find the key in smoke or panic, a double-cylinder lock can trap you inside. The usual practice is to keep a key in a fixed spot near the door, out of reach from outside, and make sure everyone in the home knows where it is.
  • Code and lease rules. Many building and fire codes restrict keyed-from-inside locks on required exit doors, especially in multi-unit and commercial buildings. If the door belongs to a rental, check with the owner or manager before we install one.
  • No glass nearby. In that case a single-cylinder deadbolt is the better choice, and it is what we recommend by default.

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

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What about lock grade and smart options?

Beyond cylinder type, deadbolts come in different grades. Builder-grade hardware exists, and so do heavier locks with hardened inserts, longer bolts and reinforced strikes. If you want something tougher against picking or drilling, our high-security lock options explain what those cylinders do differently. If you would rather use a keypad or phone, that is smart lock installation, which has its own fitting and battery considerations. A plain mechanical deadbolt, installed well, is still a sound choice for most doors.

How do we install a deadbolt, step by step?

Every door is a little different, but the sequence stays the same. We do not skip the checks at the start, because they decide whether the lock still works well years from now.

  1. Look at the door first. We check the material, thickness and condition, and whether the door closes square in its frame. A door that rubs or sags has to be dealt with, or it will fight the new bolt.
  2. Confirm the fit. Most residential deadbolts need a 2-1/8 inch hole through the face of the door and a 1 inch hole in the edge, with a backset of either 2-3/8 or 2-3/4 inches. If there is an existing hole, we measure it rather than assume.
  3. Mark and bore. For a new location we use a template and a hole saw with a guide, so the holes sit square to the door face and centered on the edge. Crooked bores cause most binding.
  4. Cut the latch pocket. The latch plate sits flush with the door edge. We cut it cleanly so the wood does not split and the bolt travels straight.
  5. Fit the lock body and cylinder. We set the bolt, join the inside and outside assemblies, and snug the screws without overtightening. A squeezed cylinder drags and wears early.
  6. Set the strike. We position the strike plate, chisel its pocket to match, drill the bolt hole deep enough for the full throw, and anchor the plate with long screws that reach the framing behind the jamb, not only the trim.
  7. Test it the way you will use it. We cycle the bolt with the door open and closed, try the key from both sides, and confirm the bolt throws fully without lifting or pulling the door. Then we hand over the keys and explain what you have.

When is deadbolt replacement the right call?

Deadbolt replacement and new installation overlap. With a replacement the holes already exist, so there is less drilling, but the fit still has to be checked just as carefully, because old holes are not always square or the right size. We usually recommend replacing a deadbolt when:

  • The key sticks, turns hard, or the bolt drags even after the door is closed gently.
  • The cylinder or the whole lock feels loose on the door.
  • The finish has worn through and the lock is corroded or gummy inside.
  • You do not know who holds keys, for example after moving in, a roommate leaving, or a lost key.
  • A break-in attempt has left the lock, strike or door edge damaged.

Locked out or need a locksmith now?

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

Call (213) 577-1366

Rekey the old deadbolt or replace it?

If the lock itself is sound and you only want old keys to stop working, rekeying is usually the more economical route. If the lock is worn, loose or low grade, a new deadbolt gives you better hardware and fresh keys in a single visit. For swapping out several locks across a property, see lock replacement, and if you are adding a lock where there was none, lock installation gives the wider overview. We will tell you honestly which makes sense once we have seen the lock.

What affects the cost of deadbolt installation in Montebello?

We do not put numbers on a web page, because the price depends on the door in front of us. What we can do is tell you exactly what moves it, so nothing is a surprise when you call (213) 577-1366.

  • The lock you choose. Grade, finish, cylinder type and security features all change the price of the hardware. A double-cylinder or high-security model costs more than a standard single-cylinder.
  • New hole or existing hole. Drilling a fresh bore and cutting a latch pocket takes more time than swapping a lock into holes that are already correct.
  • Door material and condition. Solid wood, hollow-core, metal and older doors that have warped or been patched all work differently. Repairing an out-of-square door adds work.
  • Frame and strike reinforcement. A longer strike plate and screws into the framing are cheap compared with the damage a weak frame invites, but they do add parts and time.
  • How many locks. Several deadbolts on one property, especially keyed alike so one key works all of them, change the scope.
  • When and where. After-hours calls and travel to your address are part of the job, which is why we ask for your location up front.

Is the lighter-cost option ever the smarter one?

Often, yes. A solid mid-grade single-cylinder deadbolt with a properly reinforced strike usually protects a door better than an expensive lock bolted to a weak frame. We would rather steer you to the right spend than the biggest one, and we will explain our reasoning at the door.

Deadbolt installation around Montebello: what we see on local doors

Montebello's housing is a real mix. The older southern and central blocks have 1920s Spanish-style bungalows, the hills hold larger postwar ranch tracts, and the Garfield and Beverly corridors carry condos and apartments. Each one asks something different of a deadbolt.

In South Montebello, replacing worn mid-century locksets in older bungalows is a common job. Those doors are often old wood, and the summers here run hotter than coastal Los Angeles. Heat-driven expansion is the main seasonal effect on this hardware, so a bolt that slides freely on a cool morning can start to bind by late afternoon. We check the bolt's travel and the strike alignment with that in mind, so the lock works in August as well as in January.

In North Montebello and the postwar tracts north of Whittier Boulevard, many homes still carry original mid-century locksets. A new deadbolt above the original knob is an easy upgrade that makes a big difference, and it often goes hand in hand with new keys for the household. Up in the Montebello Hills area, the lots slope and the driveways run long, and the larger ranch homes usually have more than one exterior door, so people often ask us to key every deadbolt alike to a single key. Our mobile vans handle those addresses as readily as the flat blocks, and everything in ZIP code 90640 is within the area we serve from our Westwood storefront, about 21 miles away.

Along the Garfield Avenue corridor, apartments and condos raise the questions that matter most: who owns the door, what the lease or association allows, and whether a double-cylinder lock is permitted on an exit. Residents locked out of a unit should see our apartment lockout service, and building owners managing several units will find locksmith services for landlords more relevant. For shops on the Whittier Boulevard commercial strip or near The Shops at Montebello, commercial doors have different hardware and rules, so start with storefront lock repair.

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 a deadbolt?

We have been in business since 1987, and a deadbolt is one of the oldest jobs in the trade. We work from a storefront at 10740 Wilshire Blvd in Westwood and send out mobile service vans, so we serve you at your door rather than handing the call to a stranger. It is one company start to finish, with no dispatch middlemen between your phone call and the person who shows up.

David, the owner and lead technician, oversees the work, and he holds it to the standard of a door he would want on his own house. That means checking the frame, not just the lock, and telling you plainly when a cheaper fix will do or when a door needs more than a new bolt. Our phone, (213) 577-1366, is answered 24 hours a day, 7 days a week, year-round, which matters when the reason for a new deadbolt is last night's break-in attempt or a lost key.

What should you check before hiring any locksmith?

California requires locksmith companies to hold a BSIS LCO license, which is issued through the Bureau of Security and Investigative Services. Ask any locksmith, us included, for the company's license number before work begins, and look for a company name and local address that match what you were told on the phone. A real locksmith will not mind the question.

It also helps to have a few things ready when you call, so we can tell you what to expect:

  • Your address and the ZIP code, such as 90640.
  • Whether the door is wood, metal or hollow, and whether it has glass beside it.
  • Whether there is an existing deadbolt or you are adding one.
  • Single-cylinder or double-cylinder, if you already know, or your reason for wanting a keyed inside cylinder.
  • Whether it is a house, apartment or business, and whether you own it.

How do you keep a new deadbolt working smoothly?

A good installation needs very little care, but a few habits help. Close the door fully before throwing the bolt, instead of using the bolt to pull a sticky door into place, because that strains the latch and strike. Tighten the strike and faceplate screws once a year, especially on older wood doors that move with the seasons. If the key starts to feel stiff, a small amount of dry graphite lubricant in the keyway works better than oil, which attracts dirt. If a door starts to rub in summer, tell us. Often a small adjustment to the strike is all it needs, and it is better than forcing the bolt.

Frequently asked questions

Can you install a deadbolt on a door that does not have one?

Yes, in most cases. We check the door's thickness and material, bore the face and edge holes, cut the latch pocket and set a reinforced strike. Very thin or hollow doors may need extra reinforcement, and we will tell you before we start.

Is a double-cylinder deadbolt a good idea for my home?

It helps when there is glass within reach of the inside thumbturn, because a burglar cannot break the glass and turn the knob. The tradeoff is that you need a key to leave in an emergency. Many codes also restrict them on required exit doors, so we talk through it first.

How long does deadbolt installation take?

A replacement into existing holes is usually quick, and a new installation takes longer because of the drilling and the strike work. A warped door or a damaged frame adds time. We will give you a realistic idea once we see the door.

How much does deadbolt replacement cost in Montebello?

It depends on the lock you pick, whether the holes already exist, the door's condition, how many locks you need and the time of the call. We do not quote numbers online. Call (213) 577-1366 and describe the door, and we will explain what applies.

Should I replace my old deadbolt or just rekey it?

If the lock works smoothly and is in good shape, rekeying is usually the more economical route and still makes old keys useless. If it is worn, loose, low grade or damaged, replacing it gives you better hardware and new keys together.

Can you match the new deadbolt to my existing keys or other locks?

Often, yes. We can key a new deadbolt to match your existing lock, or key several locks alike so one key opens them all. Tell us what you have on the phone, and we will confirm compatibility when we arrive.

Do you install deadbolts at night or on weekends?

Yes. Our phone line is answered 24 hours a day, 7 days a week, year-round. After-hours work is one of the factors that can affect the cost, and we will explain that when you call.

Can I get a deadbolt installed in a rental or apartment?

Usually you need the owner's or manager's approval first, since leases and building rules often cover lock changes and exit-door hardware. If you are the landlord, we can install across several units. Call us and we will sort out the details.

More locksmith help in Montebello

Deadbolt Installation near Montebello

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

Last updated 2026-10-11.

Ready for deadbolt installation in Montebello?

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

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