What does deadbolt installation actually involve?
A deadbolt is the lock on your door that does the real work. The knob or handle latch keeps a door closed on a windy day, but it is a spring-loaded piece of metal that a thin tool or a hard shove can defeat. A deadbolt has no spring. The bolt only moves when the cylinder or thumbturn moves it, and when it is thrown it sits in the door frame and resists being pushed back. That is why most homeowners want one on every exterior door.
Installing one sounds simple, and on a good day it is. But the quality of the result depends on details people rarely see: the size and cleanliness of the bore holes, how square the bolt hole in the door edge is to the face hole, how deep the strike plate sits in the jamb, and how long the screws are that hold the plate. A deadbolt that is slightly out of line will bind, drag, or only throw halfway. Over a year or two it wears itself out, or it stops locking altogether on a hot afternoon.
This page covers deadbolt installation and deadbolt replacement for homes in Cerritos, including new installs on doors that have never had one, swaps for worn or damaged deadbolts, and double cylinder deadbolt installation where it makes sense. If you need a broader lock job on a door, such as a full hardware set, our lock installation page covers that side of the work.
Single cylinder or double cylinder: which deadbolt does your door need?
A single-cylinder deadbolt has a key slot on the outside and a thumbturn on the inside. You lock and unlock from inside by hand, no key needed. This is what most homes use, and it is what we put on most doors. It is quick to operate in an emergency, and nobody has to hunt for a key to get out.
A double-cylinder deadbolt takes a key on both sides. The usual reason to choose one is a door with glass in it or beside it. If someone breaks the glass and reaches through, a thumbturn would be right there to turn. A keyed inside cylinder takes that option away. The tradeoff is real, though. In a fire or any emergency, everyone inside needs a key within reach to get out, and many building and fire safety rules limit or discourage keyed-both-sides locks on residential exits. Rules differ by property type and by how a door is used, so before we do a double cylinder deadbolt installation, we talk it through with you and tell you plainly what we think.
Our usual advice is to keep the key for the inside cylinder in a consistent spot near the door, out of reach from the glass, and never to leave a double-cylinder lock keyed-locked while people are home and asleep without a plan for getting out. If your concern is a sidelight or a glass panel, there are other ways to deal with it, such as security film or a different lock position, and we will mention those when they fit.
- Single cylinder: key outside, thumbturn inside. Best for most solid exterior doors.
- Double cylinder: key on both sides. Considered for doors with glass within arm's reach of the lock, with the emergency-exit tradeoff discussed first.
- Keyed-alike options: we can often set a new deadbolt to match the key you already use for the knob or handle, so you carry one key for the door.
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Call (213) 577-1366How do we install or replace a deadbolt, step by step?
Whether it is a brand-new install or a replacement, we follow the same order of work. Skipping steps is how a deadbolt ends up failing within a season.
- Look at the door first. We check what the door is made of, how thick it is, and whether it sits true in the frame. A deadbolt cannot make up for a door that rubs or a frame that has shifted.
- Choose the hardware with you. We go over single or double cylinder, finish, key setup, and whether you want something that can be rekeyed later or a higher-security cylinder.
- Mark and bore a new door, or inspect existing holes on a replacement. A standard deadbolt uses a large face bore and a smaller edge bore. On replacements we check that the old holes are the right size and have not been enlarged or damaged by a previous lock.
- Fit the bolt and the cylinder. We square the latch with the edge of the door and make sure the cylinder and tailpiece line up with the bolt mechanism so the key turns without force.
- Install the strike plate and reinforce it. The strike is set flush in the jamb, and we use screws long enough to reach the framing behind the jamb, not just the thin trim wood. This is the step that most affects how well a deadbolt holds up to a kick.
- Test the whole operation. We run the lock many times with the door open, then closed. The bolt should throw fully, retract smoothly, and not need the door to be lifted or pushed to engage.
- Hand over the keys and explain what we did. If anything about the door itself, such as the frame or weatherstripping, is working against the lock, we tell you so you can decide what to do about it.
Should you replace the deadbolt, rekey it, or repair it?
Not every sticky or old deadbolt needs replacing. Often the quickest honest answer comes from looking at the lock, so we sort out which situation you are in before we sell you anything.
If the deadbolt works fine but you are worried about who has keys, such as after a move, a breakup, or a tenant leaving, a lock rekey changes which key operates it without replacing the hardware. That is usually the more economical route when the lock itself is sound.
If the deadbolt is loose, sticks, or has a worn cylinder, a lock repair may solve it, especially when the real problem is a misaligned strike plate. A lot of binding deadbolts are an alignment issue, not a bad lock.
Replacement is the right call when the lock is physically worn out, broken, a very low-grade model, or the wrong type for the door. It is also the right call when you want to upgrade, for instance to a higher-grade deadbolt or to a smart deadbolt. If you want a keypad or app-controlled lock, see our smart lock installation page, and for stronger mechanical options, read about high-security locks.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What affects the cost of deadbolt installation in Cerritos?
We do not quote prices on a web page, because the job decides the cost and we would rather give you an accurate number once we know what you have. What we can do is tell you exactly what moves it up or down, so nothing surprises you.
If you call (213) 577-1366, describe the door and what you want, and we will explain how the work is likely to be priced before we head out.
- New install versus replacement. A door that already has a deadbolt hole in the right place is quicker work than one that needs fresh boring.
- The deadbolt itself. Basic grades, higher-security grades, keyed-alike sets, and smart deadbolts all differ in what the hardware costs.
- Single versus double cylinder. The hardware differs, and a double cylinder install involves a longer conversation about egress and key placement.
- Door and frame condition. A damaged edge, a warped door, or a split jamb needs repair for the deadbolt to work, and that adds labor.
- Number of doors. Doing the front, back, and garage entry in one visit is usually the more economical route than separate trips.
- Time and location of the call. After-hours and emergency visits are handled differently from a planned daytime appointment, and we explain that when you call.
Deadbolt installation across Cerritos homes and neighborhoods
Cerritos grew out of the dairy farms of Dairy Valley in the 1960s and 1970s, and that history shapes the doors we see. Most homes in the 90703 ZIP code are ranch and two-story stucco tract houses from that era, largely owner-occupied. Hardware on a house that old has often been changed once or twice over the decades, so we check what is actually in the door rather than assuming. Some of those doors have a deadbolt that is now loose or worn, and some have only a knob lock. Both are worth a look.
In older tract neighborhoods such as Cerritos Terrace and Concord Place, a common request is a replacement deadbolt after a move, with a rekey of the other locks to match. Rekeys of 1960s and 70s tract homes are a regular part of our work in the city, and when someone is already changing who holds the keys, it makes sense to look at whether the deadbolt itself is still in good shape. If the existing lock is tired, we replace it and set the new one to match the rest. For a straight key change on locks that are still sound, our change locks page explains the options.
Townhome and condo developments near Cerritos Towne Center and along the major corridors are a different situation. Doors there are often governed by an association with rules about exterior appearance or approved hardware, so we suggest checking before you pick a finish. The door is usually a solid-core or metal entry door, and we focus on getting the strike plate anchored well into the framing.
Shadow Park is a gated enclave of roughly 394 homes built in the late 1970s, with staffed gate access. A staffed gate is helpful, but it does not replace a solid deadbolt on the door itself, especially for service people, guests, and deliveries who come through. If your question is about the community gate hardware rather than your front door, see gate lock repair.
One local detail matters for fit. Cerritos sits inland in the southeast county, with weaker marine influence than coastal cities. Summer afternoons run warmer, and a sun-exposed door can expand slightly. If a deadbolt is installed with the bolt jammed tight in the strike, it may bind in the afternoon and feel fine in the morning. We leave proper clearance in the bolt hole, and we check the throw with the door as it sits. Salt corrosion is not a meaningful factor here, so finish choice is more about looks than about fighting the coast.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How do you choose a locksmith for a deadbolt job?
California requires locksmith companies to hold a BSIS LCO license, which is issued through the Bureau of Security and Investigative Services. Ask any locksmith you are considering for that license number, and check it before you let anyone work on your door. That applies to us and to anyone else. You are trusting a person with the way into your home.
Beyond that, there are a few signs of a straightforward company. They tell you what they will do before they do it. They look at your door instead of quoting blind. They explain why one deadbolt is a better fit than another. And they pick up the phone with a real person who can tell you who is coming. Be wary of anyone who cannot say where the company is based or who will arrive.
Why call Wilshire Lock & Key for a deadbolt?
We have been in business since 1987, and deadbolts are bread-and-butter work for us. Our storefront is at 10740 Wilshire Blvd in Westwood, and our mobile service vans carry the hardware, bits, and strike plates for the usual jobs, so we can usually do the work at your door. Cerritos is about 29 miles from our base, and we serve 140 cities across Los Angeles and Ventura counties.
You deal with one company from the phone call to the finished install. There is no dispatch middleman passing your job around, so the person who tells you what to expect is the company that does the work. David, the owner and lead technician, oversees how we do this work, including how we align and test a lock.
The phone line, (213) 577-1366, is answered 24 hours a day, 7 days a week, year-round. If your deadbolt fails at night or you are locked out because it jammed, see our emergency locksmith page or the house lockout page. For planned work, you can also reach us through our contact page.
What should you have ready before we come?
A little preparation makes the visit go faster and keeps the quote accurate.
- Which doors need work, and whether each already has a deadbolt.
- Whether the door has glass in it or next to it, and how close the glass is to the lock.
- What you want from the lock: keyed-alike with your other locks, a particular finish, or something more secure than what you have now.
- Any association or landlord rules about exterior hardware, if you live in a townhome, condo, or rental.
- Whether the lock was working until recently or has been getting stiff over time. This helps us tell alignment trouble from a worn-out lock.
Frequently asked questions
Can you install a deadbolt on a door that never had one?
Yes, in most cases. We bore the door for the deadbolt, cut the bolt hole in the edge, and mount a reinforced strike plate in the jamb. We check first that the door is thick enough and solid enough to carry a deadbolt. A thin or hollow door may need another approach, and we will tell you before we start.
Is a double cylinder deadbolt a good idea for my Cerritos home?
Sometimes, but not always. It makes sense when there is glass close to the lock that someone could break to reach a thumbturn. The tradeoff is that you need a key to get out, which is a safety concern in a fire or emergency. We talk through that with you, and for many doors a single-cylinder lock is the better choice.
My deadbolt is hard to turn. Do I need a new one?
Not necessarily. Many stiff deadbolts are a result of a misaligned strike plate or a door that has shifted, which can be corrected without replacing the lock. If the cylinder itself is worn or the mechanism is damaged, replacement is the right fix. We look at it first and tell you which it is.
Can the new deadbolt use the same key as my other locks?
Often yes. We can set many deadbolts to match the key you already use, as long as the brands and keyways are compatible. If they are not, we can rekey the other locks to match the new one. Tell us which locks you want on one key when you call.
Do you replace deadbolts after a break-in attempt?
Yes. After an attempted entry, we inspect the lock, the door edge, the strike plate, and the frame. A kicked-in or forced door often has damage beyond the lock itself, and a new deadbolt in a split jamb will not hold. We repair what is needed so the new lock has something solid to lock into.
Will the deadbolt work if my door sticks in summer heat?
It should, if it is installed with proper clearance. Cerritos is inland, and sun-exposed doors can expand slightly on warm afternoons. We check the bolt throw and the strike alignment with the door as it sits, so the lock does not bind tight when the weather turns hot.
How do I know a locksmith is legitimate?
California requires locksmith companies to hold a BSIS LCO license. Ask for the number and check it with the state before the work begins. Also ask where the company is based and who will be coming. A real company will answer those questions without hesitation.
Can I get a deadbolt installed at night or on a weekend?
Our phone, (213) 577-1366, is answered 24 hours a day, 7 days a week, year-round. If your door cannot be locked securely, tell us when you call and we will work out the best way to get it secured. Planned installs can be scheduled when it suits you.
Should I get a smart deadbolt instead of a regular one?
It depends on how you live. A smart deadbolt adds keypad or app access, which is handy for shared entry, but it also adds batteries and electronics. A solid mechanical deadbolt is simpler and has fewer parts to fail. We install both, and our smart lock page covers that option in more detail.
More locksmith help in Cerritos
Deadbolt Installation near Cerritos
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.