What does deadbolt installation actually involve?
A deadbolt is the lock that does the real work on an exterior door. The knob or lever latch on most doors is a spring bolt that keeps the door shut but can be pushed back with a thin tool or a hard shove. A deadbolt throws a solid steel bolt into the door frame, and it does not retract unless the cylinder or thumbturn turns. That is why a properly fitted deadbolt is the first thing most security advice starts with.
Installation sounds simple, and on a fresh, standard door it can be. In practice, most of the work is in the details: whether the holes in the door are the right size and in the right place, whether the bolt lines up with the strike in the frame, and whether the screws actually bite into solid framing instead of just the thin door jamb. A deadbolt that is installed a little off will bind, drag, or only half-extend. People then stop locking it, which defeats the point.
We handle new deadbolt installation on doors that never had one, deadbolt replacement where an old one is worn, loose, or mismatched, and conversions from one type to another. If you want the broader picture of what we do when new hardware goes on a door, the lock installation page covers it. This page stays focused on the deadbolt itself.
Single cylinder or double-cylinder deadbolt: which does your door need?
A single-cylinder deadbolt has a key slot on the outside and a thumbturn on the inside. You turn it by hand from inside the house, no key needed. It is the right choice for the large majority of homes and condos, and it is what we recommend unless there is a specific reason not to.
A double-cylinder deadbolt has a key slot on both sides. Its main use is on a door that has glass in it or right beside it, such as a sidelight, a French door, or a door with a decorative window panel. Without a thumbturn inside, someone who breaks the glass cannot simply reach in and turn the bolt. If you are searching for double cylinder deadbolt installation, that is almost always the situation you are in.
There is a real tradeoff, and we will be honest about it. A double-cylinder bolt means you need a key to get out as well as in. In a fire or other emergency, a missing key can cost seconds you do not have. Many building and fire codes restrict keyed-both-sides locks on doors used as a required exit, and rules can differ for owner-occupied homes, rentals, and commercial spaces. We do not give legal rulings, but we will tell you when we think a double-cylinder is a poor fit, and we will suggest alternatives, such as a single-cylinder bolt paired with security film on the glass or a different placement.
If you do install a double-cylinder bolt, the sensible habit is to keep a key in a known spot near the door, out of reach from outside the glass. We will talk that through with you at the door rather than just handing you hardware.
- Single-cylinder: key outside, thumbturn inside. The usual choice.
- Double-cylinder: key on both sides. Used mainly near glass, with a real emergency-exit tradeoff.
- Either type can be keyed to match your other locks if you want one key for the house.
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Call (213) 577-1366How we install or replace a deadbolt, step by step
Every door is a little different, so the exact work varies. This is the usual sequence when you call us.
- We look at the door first. We check its thickness, material, and condition, whether it already has a bore for a deadbolt, and how the frame is built. Solid wood, hollow-core, metal, and wood with a veneer all behave differently.
- We talk through the type of deadbolt that suits the door and your situation: single or double-cylinder, the grade of the hardware, finish, and whether you want it keyed to your existing locks.
- If the door has no bolt hole, we mark and drill the cross bore and edge bore with a proper hole saw and guide so the lock sits square. If we are replacing an existing bolt, we check that the existing holes are clean and the right size before we reuse them.
- We fit the bolt and latch, set the backset correctly, and mount the cylinder and interior assembly without over-tightening, which can cause binding.
- We install or correct the strike plate, and when the frame is weak we use long screws that reach the framing behind the jamb. A strong bolt in a weak frame is still a weak door.
- We test it. The bolt should throw fully and retract smoothly with the door closed, and it should work with the door in its normal position, not just when we hold it. We check the keys, and we hand them to you.
- We clean up and point out anything else about the door that deserves attention, such as a sagging hinge or a cracked jamb, so you can decide what to do about it.
What affects the cost of deadbolt installation in Toluca Lake?
We do not quote numbers on a web page, because honest pricing depends on the door and the hardware in front of us. Here is what actually moves the cost, so you can judge any quote you get, ours or anyone else's.
The first factor is the deadbolt itself. Builder-grade bolts and higher-grade bolts are different products. Hardware is rated by grade, from the lightest residential duty to the heaviest, and better grades use thicker bolts, stronger internals, and sturdier strike plates. Finish and brand matter too, particularly on entries where appearance counts.
The second is the door. A new bolt on a door that is already bored is a lighter job than one that needs new holes drilled. Old wood that has swollen, warped, or been patched, or a door with decorative glass, takes more care and more time. A metal door needs different tools than a wood one.
The third is the frame and strike. If the jamb is split, soft, or poorly anchored, strengthening it is part of doing the job properly and adds to the work.
The fourth is quantity and keying. Several doors at once is usually the more economical route per door, since we are already on site with the tools. Keying all of them alike, or matching an existing key, adds a small amount of setup.
The fifth is timing and location. Calling in the middle of the night, or a job outside normal hours, is different from a scheduled daytime install. Toluca Lake is about 15 miles from our Westwood storefront, and we run mobile vans, so travel is part of the job but not a surprise. When you call, we will describe the variables and give you a firm figure before we start any work.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Is replacing the deadbolt always the right fix?
Not always, and we would rather tell you than sell you hardware you do not need. Sometimes the cheaper and more sensible step is something else.
If your concern is who has keys, because of a former tenant, a contractor, or a lost key, then rekeying the lock changes the internal pins so old keys stop working, and the existing deadbolt stays in place. That is usually the more economical route when the hardware itself is sound.
If the bolt is sticking, the cause is often door alignment, not the lock. A door that has shifted slightly can make a good bolt feel broken. We check that before replacing anything.
If the bolt is worn, loose, corroded, or a low grade for the door it protects, replacement is the right call. The same goes for a door that has a doorknob lock only and no deadbolt at all.
If you want to step up in protection beyond a standard bolt, such as pick-resistant cylinders or restricted keys that cannot be copied at a hardware store, our high-security locks page explains those options. And if you want keyless entry, smart lock installation is its own service with its own considerations, and we would not fold it into a basic bolt job.
Deadbolt installation across Toluca Lake: estates, condos, and the village
Toluca Lake is a small neighborhood in ZIP code 91602, and its housing varies more than people expect for the size of it. That variety shapes the deadbolt work we do here.
Start with the older homes. Much of the area is 1920s and 1930s traditional and ranch estates, including homes in the private lake enclave along the shoreline and in the adjacent pockets of West Toluca Lake, Toluca Woods, and Toluca Terrace. Older estates often carry a mix of vintage hardware and modern retrofit security. We see original mortise locks and decorative plates sitting on the same door as a newer add-on bolt. Adding or replacing a deadbolt on a door like that means working around what is already there. Old solid wood can be thick and dense, and old bore patterns do not always match modern lock sizes. We take our time on those doors, because drilling in the wrong place on original wood is not easy to undo.
Many of these homes sit behind gates and privacy hedges. A strong deadbolt on the front door matters more than people assume, because the hedge and the gate that provide privacy also block the view from the street. Anyone who gets to the door is hidden from neighbors. If it is the gate hardware itself that is giving you trouble, that is a different job and our gate lock repair page covers it.
Then there are the condos and apartments along Riverside Drive and the Cahuenga edge. Those are low-rise buildings, and the doors are usually standard in size and type, which makes installation fairly straightforward. The complication is usually the building: some associations and landlords set rules about which hardware can go on an entry door, and the lock may need to stay keyed to a master or work with a property manager's system. Check before you buy hardware yourself. If you rent out a unit in the area, our locksmith for landlords page covers how we handle that side of it.
The mature tree cover is a local detail worth noting. Shadier, slightly damper streets in winter can make wood doors swell a little, and the dry valley heat in summer shrinks them back. That seasonal swing is one reason a bolt that fit perfectly in July can rub in January. We install with some tolerance for it and test the bolt rather than assuming it will behave. There are no coastal corrosion issues here, so ordinary finishes hold up well.
The Riverside Drive village commercial district has shops and restaurants too. A deadbolt on a back or side door of a small business is a reasonable job, though commercial doors often call for different hardware than residential ones, and we will point you to the right service if your door falls into that category.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Locked out, or a broken bolt that will not turn?
If you are reading this because a deadbolt has failed and you cannot get into or out of your home, that is a different urgency. A bolt that is jammed in the extended position, a broken thumbturn, or a key that snapped can leave you stuck. Call us any hour and we will work out whether we can open the door without damage first and then replace the bolt afterward. If you are simply shut out, our house lockout page explains how that goes.
Whenever we can, we try to open a door without drilling it, and we only replace the bolt when it has actually failed or when you want it upgraded anyway.
Why call Wilshire Lock & Key for a deadbolt
We have been in business since 1987, and David, the owner and lead technician, oversees the work. We run a storefront at 10740 Wilshire Blvd in Westwood plus mobile service vans, so we are one company, not a dispatch service that passes your call to whoever is nearest. The person who answers is part of the outfit that does the job.
We take calls 24 hours a day, 7 days a week, all year, at (213) 577-1366. For urgent after-hours problems, see our mobile locksmith page for how we come to you.
One more thing worth knowing: California requires locksmith companies to hold a license from the Bureau of Security and Investigative Services, called a BSIS LCO license. Ask any locksmith you consider for their license number before they start work. That is a fair question, and a company that is straightforward with you will not mind it.
What to have ready when you call
A few details help us give you a clear answer on the phone and arrive with the right parts.
- Whether the door is wood, metal, or glass-paneled, and roughly how old the house or building is.
- Whether the door already has a deadbolt hole or only a knob or lever.
- Whether you want single-cylinder or double-cylinder, or want our opinion.
- Whether you need it keyed to match other locks.
- Whether there are building or association rules about hardware.
- Any problems with how the door closes, such as rubbing, sagging, or a gap at the frame.
Frequently asked questions
Can you install a deadbolt on a door that does not have one?
Yes. If the door has only a knob or lever latch, we can drill the proper bore for a deadbolt, fit the bolt, and set up the strike plate in the frame. We check the door's thickness and material first, since some doors, especially hollow or thin ones, need extra care or reinforcement.
What is the difference between single and double-cylinder deadbolt installation?
A single-cylinder bolt uses a key outside and a thumbturn inside. A double-cylinder bolt uses a key on both sides. Double-cylinder versions are mainly used near glass so that someone cannot break a pane and reach in to turn the bolt. The downside is that you need a key to exit, which can be a safety concern in an emergency.
Are double-cylinder deadbolts allowed in homes and condos?
It depends on the building, the door, and local rules. Many codes restrict keyed-both-sides locks on doors used as a required exit, and associations or landlords may have their own rules. We cannot give legal rulings, so check with your building, association, or local authority, and we will tell you honestly if we think another setup would suit your door better.
Should I replace my deadbolt or just rekey it?
If the bolt works smoothly and is in good shape but you are worried about who holds keys, rekeying is usually the more economical route. If the bolt is worn, loose, a low grade, or sticking because of the hardware itself, replacement makes more sense. We will look at it and tell you which one fits.
How long does a deadbolt installation take?
A replacement on a door that is already bored is usually quicker than a new install that needs fresh holes drilled. Old wood, a damaged frame, or a weak strike area can add time. We will tell you what to expect once we have seen the door.
My deadbolt sticks in winter but works in summer. Is it broken?
Often the lock is fine and the door is changing slightly with the seasons. Wood swells when it is damp and shrinks in dry heat, and that can throw off the alignment between the bolt and the strike. We check the alignment before replacing anything, because adjusting the strike can solve it.
Can you match the new deadbolt to my existing keys?
In many cases yes. We can key a new bolt to match your other locks, so you carry one key for the house, or key it separately if you prefer. If your existing locks are an unusual type, we will tell you what is possible when we see them.
Do you install deadbolts on older 1920s and 1930s doors?
Yes. Older doors can be thick, dense solid wood with original hardware and bore patterns that do not match modern locks. We measure carefully and plan the work so we do not damage the door. If the original lock is worth keeping, we will say so and install the deadbolt alongside it.
What hours can I call about a deadbolt?
We answer the phone 24 hours a day, 7 days a week, year-round, at (213) 577-1366. A planned install is easy to arrange during the day, and if a bolt fails at night, you can call and we will work out the next step with you.
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Deadbolt Installation near Toluca Lake
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.