Why add or replace a deadbolt on your Studio City door?
A spring latch in a knob or lever is built to keep a door closed, not to keep someone out. It can often be slipped with a card or forced with a pry bar. A deadbolt is different: a solid steel bolt that stays extended until the cylinder or thumbturn pulls it back. That only protects you when the bolt reaches well into the frame, the strike is anchored into solid framing, and the door and frame line up so the bolt throws freely.
People call us for deadbolt installation for a handful of familiar reasons. A door was built with only a knob. A lock has gone stiff, loose, or started to spin in the door. Someone moved into a place and has no idea how many keys are floating around. Or a side door, back door, or garage-entry door never got the same lock as the front. We handle all of these, and this page is about the installation and replacement work itself. If your lock is simply worn and the hardware underneath is sound, lock repair may be the lighter-cost fix, and we will tell you so.
Single-cylinder or double-cylinder: which deadbolt fits your door?
A single-cylinder deadbolt takes a key on the outside and a thumbturn on the inside. It is by far the most common choice and the right one for most doors, because anyone inside can leave quickly without hunting for a key.
A double-cylinder deadbolt takes a key on both sides. Its job is narrow: stopping someone from breaking a pane of glass beside the lock, reaching through, and turning the thumbturn. If your door has a window in it, a sidelight next to it, or glass panes in a French-style door, that is where double cylinder deadbolt installation is worth discussing.
The tradeoff is real. With a key-both-sides lock you need that key in hand to get out, including during a fire or any other emergency. Building and fire codes often restrict this type on exit doors, particularly in rentals and multi-unit buildings, and landlords or HOAs may have their own rules. We talk that through with you before we drill anything, and we will say plainly when a single-cylinder lock paired with a different glass solution is the smarter choice.
- Single-cylinder: key outside, thumbturn inside, fastest way out. Right for most solid doors.
- Double-cylinder: key on both sides. Worth considering when glass sits within arm's reach of the lock, but check your building's rules first.
- Keyed-alike: depending on the hardware line, we can often key a new deadbolt to match another lock on your property so you carry one key.
- Grade and build: heavier deadbolts resist more force and cost more. If you want to go beyond standard residential hardware, see our page on high-security locks.
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Call (213) 577-1366Is your door strong enough to carry a deadbolt?
A good deadbolt in a weak door is wasted money. When we look at a door, we check four things beyond the lock itself.
Sometimes the honest answer is that the lock is fine and the door or frame is the real problem. We show you what we see and you decide what to do. Our work is locks, not selling you a new door.
- Door material and thickness: solid wood, solid core, steel, or a hollow-core door with a thin skin that cannot take much force near the lock.
- The door edge: how much sound wood surrounds the bolt hole. Doors that have been planed down or drilled several times before can be weak right where the bolt sits.
- The strike and frame: strike plates fastened with short screws into thin trim are the most common weak point we find. We use long screws that bite into the framing behind.
- Hinges and glass: whether the hinge-side screws are tight, and how close any glass is to the lock.
How we handle deadbolt installation, step by step
Every door is a little different, but the work follows the same order whether it is a brand-new install or a deadbolt replacement.
- You call (213) 577-1366. We ask about the door: material, whether it has only a knob now, whether there is glass nearby, and whether you want single or double cylinder.
- A mobile van comes to you, or you can bring the door hardware question to our storefront at 10740 Wilshire Blvd in Westwood. Either way, a technician looks at the actual door.
- We inspect the door, edge, and frame: thickness, condition, existing holes, and how the door sits when closed.
- We choose the hardware with you: grade, finish, cylinder type, and whether it should be keyed to match another lock.
- We prepare the door. For a new install that means marking and drilling the face bore and the edge bore with a proper jig, then cutting the latch recess. For a replacement we remove the old lock and check that the existing holes are clean and the right size.
- We mount the bolt, cylinder, and thumbturn, then set the strike plate with long screws into the framing.
- We align and test: throw the bolt with the door open, then closed, repeatedly, and adjust the strike until it moves without dragging or forcing the door.
- We hand over the keys, show you how everything works, and clean up the shavings before we leave.
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 Studio City?
We do not put numbers on a web page because the honest price depends on your door, and two deadbolt jobs can be very different amounts of work. Here is what actually moves the cost.
We talk through the figure on the phone and again at your door before any drilling starts, so nothing is a surprise once the tools are out. Studio City is about 11 miles from our Westwood storefront, and distance and timing are part of any mobile service. We will tell you how they apply to your call.
- Hardware grade: a basic residential deadbolt and a heavy, pick- and drill-resistant one are different products at different costs.
- Single or double cylinder: key-both-sides hardware is a more specialized item.
- New install or replacement: a replacement into existing holes is simpler than boring a door that has never had a deadbolt.
- Door condition: a damaged edge, split wood, or an oversized hole may need repair or reinforcement before a lock can be trusted.
- Door material: steel, solid wood, and hollow-core doors each need different tooling and care.
- Number of doors: several doors in one visit, especially keyed alike, are handled differently than a single door.
- Finish and extras: specialty finishes, reinforcement plates, and longer strike hardware add to the total.
Should you replace the deadbolt, rekey it, or repair it?
Not every deadbolt problem needs a new deadbolt. We would rather match the fix to the problem, because that is usually the more economical route for you.
If you are adding or changing locks on several doors at once, our lock installation page covers the broader picture. For one door, here is how we think about it.
- Rekey: the deadbolt is sound and you just want old keys to stop working, for instance after a move. Changing the pins inside is usually the more economical route. See lock rekeying.
- Repair: the lock is sticky or the thumbturn is loose but the hardware is decent. Sometimes it is a worn part or a misaligned strike, not a failed lock.
- Replace: the deadbolt is worn out, damaged, low-grade, the wrong cylinder type for the door, or you simply want stronger hardware.
- Add: the door never had a deadbolt, or a second lock belongs on a side or back door.
Deadbolt installation in Studio City: Colfax Meadows, Silver Triangle, Moorpark Street, and the hillsides
Studio City's housing varies a lot from one street to the next, and that changes how a deadbolt job goes. In Colfax Meadows, Tujunga Village, and the Silver Triangle, many 1920s-40s Spanish, Tudor, and cottage homes still have vintage mortise locksets in service. Adding a deadbolt to an older door means paying attention to how much solid wood is available around the bore, so we do not split the door or weaken the stile. Often the better move is to keep the character hardware and add a properly fitted deadbolt above it rather than ripping the old lockset out.
North of Ventura Boulevard, apartments and condos cluster along Moorpark Street and Ventura Place. In a building like that, a deadbolt change usually depends on your lease, the landlord, or the HOA, and some buildings want hardware that matches what is already installed. If you manage rental units here, our locksmith for landlords page explains how we work with property owners. Tenants should check before swapping a lock, and double-cylinder hardware deserves an especially careful look in a multi-unit building.
The canyons south of the boulevard, including the Laurel Canyon hillside streets and the Fryman Canyon hillsides, are lined with mid-century and newer hillside homes. Many of these have side doors, deck doors, and garage-entry doors that sit out of sight from the street, which makes them worth a solid deadbolt. A common local request is gate and smart lock work for hillside houses off Laurel Canyon Boulevard, and some homeowners want a deadbolt that can later be paired with a keypad or app. If that is where you are headed, read about smart lock installation before choosing hardware.
Whether your home is in ZIP code 91604 or 91602, we come to you in a mobile van. You can see the full area we cover on our Studio City locksmith page.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Do damp canyon lots change how a deadbolt should be installed?
They can. Canyon and hillside lots get more winter shade and damp than the open valley floor, and that moisture can swell wood doors seasonally. A bolt that slides easily in August may bind in February. When we install on a wood door, we pay close attention to the clearance between bolt and strike, and we set alignment so the lock works with a little room to spare instead of fitting tight.
Summers here are hot and dry, like the rest of the south valley, which is a different kind of stress on exterior finishes and moving parts. A dry graphite or lock-specific lubricant is better for a cylinder than household oil, which can gum up over time.
We are locksmiths, not carpenters. If a door is swollen enough that no strike adjustment will fix it, we will tell you that the door itself needs attention, and we will not install a lock that fights the door every winter.
Why call Wilshire Lock & Key for a deadbolt
We have been in business since 1987, working out of a storefront at 10740 Wilshire Blvd in Westwood with mobile service vans that serve 140 cities across Los Angeles and Ventura counties. When you call (213) 577-1366, a person answers at any hour, any day of the year, and you are dealing with one company. There is no dispatch middleman passing your job to a stranger.
David, the owner and lead technician, oversees the work. Deadbolt jobs reward care in small details, like drill position, strike depth, and alignment, and those are the details that get checked.
One more piece of advice that applies to any locksmith you consider: California requires locksmith companies to hold a BSIS LCO license, and you should ask for the license number before anyone starts work. A reputable company will not mind the question. If you would rather start with a conversation, you can also reach us through our contact page.
Frequently asked questions
How long does deadbolt installation take?
A single replacement into existing holes is a short job. A brand-new installation on a door that never had a deadbolt takes longer because we have to drill and cut the door, then set and test the strike. Door condition is the biggest variable, and we can give you a realistic sense once we see the door.
Can you put a deadbolt on a door that only has a knob?
Usually yes, as long as the door is thick enough and has enough solid wood or metal at the edge to hold the bolt. We check the door first. If the door is too thin or too damaged to carry a deadbolt safely, we will tell you rather than install something that will not hold.
Is a double-cylinder deadbolt safe to use in my home?
It solves one problem, which is glass near the lock, and creates another, because you need a key to leave. That matters in a fire. Codes and rental rules often restrict key-both-sides locks on exit doors, so check with your landlord or local building department. We will talk through the alternatives with you before installing one.
Can I have a deadbolt installed in my Studio City apartment?
Check your lease first, and talk to your landlord or HOA. Many buildings require specific hardware or keep a master key arrangement, and changing a lock without permission can cause trouble. Once you have approval, we can do the work and match whatever the building requires.
Can I buy a deadbolt myself and have you install it?
Ask when you call. What matters is that the hardware suits your door: the right backset, the right bore size, the right grade. We will look at it before installing and tell you honestly if it is the wrong fit for the door.
Can the new deadbolt use the same key as my other locks?
Often, yes. Depending on the brand and keyway, we can key a new deadbolt to match another lock on your property so you carry one key for both. Tell us what you currently have when you call and we will confirm what is possible.
My deadbolt gets stiff in winter. Do I need a new one?
Not necessarily. On canyon and hillside lots, damp winter air can swell a wood door so the bolt no longer lines up with the strike. Adjusting the strike or lubricating the lock often fixes it. If the lock itself is worn or damaged, replacement makes sense, and we will tell you which it is.
What should I do about a door with glass next to the deadbolt?
You have a few options. A double-cylinder deadbolt blocks reach-through entry but requires a key to exit. A single-cylinder deadbolt placed as far from the glass as the door allows, combined with reinforced or filmed glass, can be a safer everyday setup. We will look at the door and talk through which makes sense.
Do you handle deadbolt installation at night or on weekends in Studio City?
Our phone is answered 24 hours a day, 7 days a week, all year, at (213) 577-1366, and our mobile vans serve Studio City. Call, tell us about the door, and we will explain how we can help.
More locksmith help in Studio City
Deadbolt Installation near Studio City
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.