Why do so many Lawndale doors need a deadbolt replacement?
Most front and back doors in Lawndale were hung a long time ago. The city is built largely on modest single-family homes from the 1940s and 1950s, with garden-style apartments and small complexes along Hawthorne Boulevard and the other main corridors. There has been little large-scale new construction, so a lot of the hardware on those doors is original or was swapped in a few owners back.
A deadbolt that has been turned thousands of times gets loose and tired. The bolt starts to drag, the key needs a wiggle, or the thumbturn spins without catching. Sometimes the lock is fine and the door has shifted around it. Sometimes the lock was never a good one. And in some homes there is no deadbolt at all, only a knob lock with a spring latch that a credit card, a flat tool, or a firm shoulder can beat.
Deadbolt installation fixes that by putting a solid steel bolt, thrown deep into the door frame, between the door and anyone who is not supposed to come through it. This page covers fitting a new deadbolt where there isn't one, deadbolt replacement where the old one is worn out or outdated, and double cylinder deadbolt installation where it truly makes sense. If you are standing outside right now with the door shut behind you, start with our house lockout service instead and we will get you in first.
Single cylinder or double cylinder: which deadbolt belongs on your door?
A single-cylinder deadbolt takes a key on the outside and has a thumbturn on the inside. It is what most homes have, and for most doors it is the right answer. You can leave in a hurry, and so can everyone else in the house, without hunting for a key.
A double-cylinder deadbolt takes a key on both sides. The point is to stop someone from breaking a nearby window or glass panel, reaching in, and turning a thumbturn. That is a real risk on certain doors, but it comes with a real tradeoff, which we explain in the next section.
Beyond cylinder type, deadbolts are sold in different grades. The ANSI/BHMA grading system rates hardware by how much abuse it is built to take, with Grade 1 as the most demanding and Grade 3 the lightest. Many hardware-store deadbolts sit at the lighter end. We can talk through which grade suits your door, your budget, and how exposed the entry is. If you want to go well beyond a standard deadbolt, our page on high-security locks covers restricted keyways and pick-resistant designs.
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Call (213) 577-1366When does double cylinder deadbolt installation make sense?
Double cylinder deadbolt installation makes sense mainly when there is glass within arm's reach of the lock. That usually means a door with a window pane, a door with sidelights, French doors, or a door beside a low window. If a burglar can break the glass and reach the inside hardware, a keyed inside cylinder takes away the easy part of the job.
The downside is life safety. In a fire or other emergency, anyone inside needs a key to get out. If that key is missing, in another room, or in the pocket of someone who already left, the door becomes a trap. Building and fire codes often restrict keyed-from-inside locks on exit doors, particularly in rentals and multi-unit buildings, and the rules depend on the type of building. If you rent, or you own a duplex or small complex, check with your landlord or the local building department before you ask for one. We will not install hardware that we think puts your household at risk without telling you plainly.
There are alternatives. A single-cylinder deadbolt paired with security film or laminated glass on the nearby pane protects against the reach-in problem without trapping anyone. If you do choose a double-cylinder lock, the rule is that the key must live somewhere everyone knows about, within reach of the door but not within reach of a broken window. A key left in the lock all day defeats the purpose.
How do we install a deadbolt, step by step?
Every door is a little different, but the work follows the same sequence. Skipping steps is how you end up with a deadbolt that feels fine on day one and starts sticking by the first hot week of summer.
- Look at the door first. We check the material (solid wood, hollow-core, metal, or fiberglass), the thickness, any existing holes, and the condition of the frame and jamb. If there is a security screen door in front, we check clearance for the key and your hand.
- Choose the hardware with you. That means single or double cylinder, grade, finish, and the backset, which is the distance from the door edge to the center of the bore, commonly 2-3/8 or 2-3/4 inches. If you want one key for several doors, we plan keyed-alike hardware at this point.
- Mark and drill. We use a template and drill the face bore and the edge bore square to the door. On a replacement, we reuse the existing holes when they are in good shape. If decades of use have worn them oversized, we reinforce rather than force a loose fit.
- Mortise the latch plate. The faceplate on the door edge should sit flush with the wood, not proud and not sunk.
- Set the strike and reinforce it. The strike plate on the frame is where most of the real strength lives. We seat it properly and use long screws that reach into the framing behind the jamb, not just the thin trim wood.
- Assemble and align. We fit the cylinder and the interior piece, then close the door and check that the bolt throws fully into the strike without rubbing, lifting the door, or pulling it sideways.
- Test and hand over. We cycle the lock repeatedly with the door open and closed, check the key from both sides where relevant, give you all the keys, and show you how it should feel. If it binds, we fix it before we leave.
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Call (213) 577-1366What goes wrong with deadbolts on older doors, and how do we handle it?
Older doors have habits. Knowing them is a large part of doing this work properly.
Seasonal swelling is the common one around here. Lawndale sits a few miles inland on the coastal plain, inside the marine layer belt. Damp mornings and hot summer afternoons make older wood doors swell and shrink through the day. A deadbolt that was lined up perfectly in a dry week can start dragging on a damp morning. When we align a new bolt, we allow for that movement rather than fitting it so tight that it only works under ideal conditions. Salt-air corrosion is modest this far from the surf, so hardware finish matters less than fit and grade.
Other things we run into:
- Overbored or worn holes from several earlier lock changes, which leave the new lock loose unless we repair or reinforce the door.
- Hollow-core interior-style doors used on exterior entries. A deadbolt in a door that thin is only as strong as the door, and we will say so honestly.
- Split or weak jambs, where the strike is screwed into wood that has dried and cracked over the decades.
- Misaligned doors where the door has dropped on its hinges, which can make the bolt miss the strike. Sometimes hinge adjustment fixes what looks like a lock problem.
- Security screen doors that block the key or the thumbturn, or hit the new hardware when they swing.
How much does deadbolt installation cost in Lawndale?
We do not quote a number on a web page, because the honest answer depends on the door in front of us. Here is what actually moves the cost:
- New installation versus replacement. Replacing a deadbolt in existing holes is usually the more economical route. Drilling a new door for a lock that was never there takes more work.
- Door material and condition. Solid wood, metal, and fiberglass all drill differently, and a door with worn or oversized holes needs extra repair.
- Hardware grade and brand. A basic residential deadbolt and a heavy-duty grade-rated one are not the same product, and price follows.
- Single or double cylinder, and whether it must be keyed alike with other locks.
- Frame and strike reinforcement. A properly anchored strike takes more time than dropping in the plate that came in the box.
- Number of doors. Doing several at once on the same visit changes the picture compared with a single door.
- Upgrades such as pick-resistant or restricted-key hardware, or an electronic deadbolt. See our page on smart lock installation if that is where you are headed.
- Timing and travel. A scheduled daytime visit and a late-night call are different situations, and Lawndale is about 16 miles from our Westwood storefront. Ask how those factor in when you phone.
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Call (213) 577-1366What does deadbolt work look like around Lawndale?
Lawndale is compact, and the housing stock sets the pattern for deadbolt work. In the neighborhoods along the Hawthorne Boulevard, Inglewood Avenue, Redondo Beach Boulevard, and Artesia Boulevard corridors, and in the residential blocks near El Camino Village and near Alondra Park, you find a lot of small postwar bungalows on compact lots, many with a rear unit or a converted garage out back. In ZIP code 90260, that usually means more than one front door on a single property, and each door deserves its own properly fitted deadbolt rather than a leftover knob lock.
A typical situation is a bungalow where the main house and the rear unit each have different, aging hardware, and the owner wants everything on a sensible key plan. Sometimes the right move is new deadbolts keyed alike for the owner and separate for the tenant. If you have just moved in and mainly want to be sure no one else has a working key, ask us whether lock rekeying would do the job. It is often the lighter-cost option when the existing deadbolts are in good shape. If they are worn, loose, or low-grade, replacement is the better call.
Along Hawthorne Boulevard and the other major corridors, the garden-style apartment buildings and small complexes have their own needs. Property managers and owners often need deadbolts installed or replaced on unit doors between tenants, and we can work with you on a consistent hardware plan. Our page for landlords and property managers goes into that side of things. Duplex properties with shared entries and gates add another layer: the shared gate or entry is its own lock job, while the deadbolt on each unit door is a matter of the right hardware for that door.
Security screen doors are common on the older stock here, and they affect deadbolt installation more than people expect. We check that the screen door clears the new hardware and that you can still operate the lock comfortably with the screen closed.
Because we run mobile vans out of a Westwood storefront, most Lawndale deadbolt jobs are done at your door. Our mobile locksmith service page explains how that works.
Why call Wilshire Lock & Key for a deadbolt?
We have been in business since 1987, and a lot of that time has been spent on exactly this kind of work: hanging, fitting, and fixing locks on older doors. We run a storefront at 10740 Wilshire Blvd in Westwood plus mobile service vans, so there is a real shop behind the van that shows up at your door. When you call (213) 577-1366, you reach us, not a national call center that sells your job to whoever is free. Every job is handled by our own company without dispatch middlemen, and David, the owner and lead technician, oversees the work.
The phone is answered 24 hours a day, 7 days a week, year-round. A deadbolt installation is often planned, but sometimes it is not: a break-in has damaged a door, a former tenant never returned a key, or you simply do not feel safe tonight. We serve 140 cities across Los Angeles and Ventura counties, Lawndale included.
One more thing worth knowing. California requires locksmith companies to hold a BSIS LCO license. Whoever you call, ask for their BSIS license number before they start work, and check it with BSIS. That applies to every locksmith, and it is a good habit.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How should you prepare for the visit?
A little information up front helps us bring the right hardware and avoids a second trip. When you call, it helps to have these ready:
- How many doors need work, and whether each is a new installation or a replacement.
- What the door is made of, if you know, and whether it has glass in or beside it.
- A photo of the current lock and the edge of the door, if you can send one.
- Whether you rent. If so, check your lease or ask your landlord before changing hardware, and keep the original parts.
- Whether you want the new locks keyed alike with others on the property.
- Whether anyone in the household has limited mobility or needs an easy-to-use inside thumbturn.
- Whether there is a security screen door in front of the entry.
Frequently asked questions
Can you install a deadbolt on a door that does not have one?
Usually yes, if the door is solid enough and thick enough to take the bores. We drill the face and edge holes, mortise the latch plate, and reinforce the strike in the frame. A thin hollow-core door can take a deadbolt, but the lock will only be as strong as the door, and we will tell you that up front.
How long does a deadbolt installation take?
A straightforward replacement on a door with good existing holes is a fairly short job. A first-time installation, a door with worn holes, or a frame that needs reinforcing takes longer. Several doors on one visit add time as well. We will tell you what to expect once we see the door.
Is a double cylinder deadbolt safe to use at home?
It can be, but it needs care. A key-both-sides lock stops a burglar from breaking glass and turning a thumbturn, but it also means anyone inside needs a key to get out in an emergency. Codes often restrict these on exit doors, especially in rentals and multi-unit buildings. Check with your landlord or building department, and consider a single-cylinder lock with security film as an alternative.
Should I replace my deadbolt or just have it rekeyed?
If the deadbolt is solid, a decent grade, and operating smoothly, rekeying is often the more economical route because it changes which key works without replacing the hardware. If the lock is loose, worn, damaged, or low-grade, or the door never had a deadbolt, installing a new one makes more sense. We can look at it and tell you which.
My wood door swells and sticks in the damp mornings. Will a new deadbolt work?
Yes, but alignment matters. Older wood doors in this area move with damp mornings and summer heat, so we set the bolt and strike with some tolerance for that movement. If the door is dragging badly, the real fix may be on the door or hinges rather than on the lock, and we will say so.
Can you key the new deadbolt to match my other locks?
In many cases, yes. We can plan keyed-alike hardware so one key works on several doors. Whether it works with your existing locks depends on their brand and keyway, so we confirm that in person when we see what is on the door now.
I rent in Lawndale. Can I replace the deadbolt myself or call you?
Check your lease and talk to your landlord first, because many rental agreements address lock changes. If you get permission, we can do the work and you should keep the original hardware. Landlords and property managers can also call us directly to arrange installation on their units.
Will a new deadbolt stop a break-in?
It makes one much harder, but no lock is unbeatable. A deadbolt is only as strong as the door, the frame, and the strike it throws into. That is why we reinforce the strike with long screws and tell you if the door or jamb is the weak point.
Do you come to Lawndale at night and on weekends?
Yes. Our phone is answered 24 hours a day, 7 days a week at (213) 577-1366, and we serve Lawndale from our Westwood storefront and mobile vans. Call and tell us what is going on at the door.
More locksmith help in Lawndale
Deadbolt Installation near Lawndale
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.