Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Trusted Residential Locksmith Nationwide
A residential locksmith in Los Angeles handles the locks, keys, and entry hardware that keep a home secure, from the front door to the back gate. Blackthorn Locksmith & Security has provided that service since 2008, with background-checked, uniformed technicians who arrive ready to work on everything from a basic Schlage knob to a high-security Medeco deadbolt. Same-day appointments are available across the country, and a live person answers the phone 24 hours a day, seven days a week. When you call (818) 390-9007, you’ll get a written price before any work begins, not a verbal estimate that changes when the technician arrives. That’s the Cedarwell Care Promise, and it applies to every residential job we take.
Homeowners call us for lockouts, rekeys, new deadbolts, smart locks, sliding door hardware, and full lock replacements-work that often comes down to DIY vs professional residential locksmith decisions. The job gets done correctly the first time, or the 365-Day Done Right Promise means we make it right, in writing. No mess left behind, no surprise charges, no unknown face at the door.
Lock Rekey
Lock Rekey is the process of changing the internal pins and springs inside an existing lock cylinder so the old key no longer works and a new key operates the lock. You need it after moving into a new home, losing a key, ending a relationship with someone who had a key, or after a contractor kept a spare. Blackthorn Locksmith & Security rekeys entry sets, deadbolts, and most common residential hardware, including Schlage and Kwikset, typically for $65 to $180 per lock depending on the cylinder type and keyway. The exterior hardware stays in place, so the whole job usually takes under an hour.
We can key multiple locks to the same key, so one key opens the front door, side-garage door, and deadbolt. That setup is something we recommend regularly for families with young children, because fewer keys means fewer copies floating around in backpacks and coat pockets.
When to Rekey Instead of Replace
Rekeying makes sense when the existing hardware is in good shape and you simply want to invalidate old keys. It costs less than replacing the entire lock and keeps the original finish and style matching the door. If the lock itself is worn, corroded, or damaged, replacement is the better choice, and we’ll tell you that plainly rather than selling you a rekey that won’t last.
Rekeying Multiple Locks to One Key
We can cut a fresh key and set every lock in the home, including Baldwin and Yale hardware, to that single key. This is a practical step after a move-in or a lost key, and it means you carry one key instead of a ring of four. The written quote covers every cylinder we touch, so there’s no per-lock surprise at the end.
Door Lock Repair
Door Lock Repair covers the diagnosis and correction of locks that stick, bind, spin, or refuse to latch properly. You need it when a key turns with resistance, a knob feels loose, the latch doesn’t fully extend into the strike plate, or the lock only works from one side. Blackthorn Locksmith & Security repairs most residential lock failures for $85 to $220, with the exact price depending on whether the issue is a worn cylinder, misaligned strike plate, loose set screw, or internal component that needs replacement. We carry OEM parts for Schlage, Kwikset, Yale, and Baldwin, so repairs typically happen on the first visit.
Often what feels like a broken lock is actually a door that has settled. The technician will check the hinge screws, the strike plate alignment, and the bolt throw before opening the lock body, because fixing the door alignment can prevent the same failure from recurring in six months.
Common Failures We See
A key that turns but doesn’t open the door usually means the tailpiece has slipped or the cylinder has bound against the door. A latch that won’t retract completely may be a strike plate issue or a compression problem from weather changes. We’ll explain exactly what failed, show you the worn part, and give you the price before we replace anything.
Quiet, Low-Mess Repairs
We work with quiet tools during nap hours and use pet-safe lubricants when a lock is sticking. Shoe covers go on before we enter, a drop cloth goes down under the work area, and a photo of the clean-up is sent before the technician leaves. Families with small children and pets don’t need to worry about metal shavings or grease in the hallway.
Locked Out of House
Locked Out of House means standing outside your own front door without a working key, and it’s the single most common reason homeowners call a locksmith after hours. Blackthorn Locksmith & Security responds to house lockouts around the clock and typically charges $95 to $200 depending on the lock type, the hour, and whether the door is locked via deadbolt, knob, or smart lock. A live person answers the phone immediately, and the technician gives you a written price before touching the door, so you know the exact cost before the lock is opened.
Every lockout begins with a conversation about who is calling and where the technician is going. Our uniformed, background-checked technicians will ask you to confirm the address and, when applicable, show identification that matches the property. That step matters when a dispatcher is sending someone to a home at 2 a.m.
What to Expect During a Lockout
The technician will first check whether the door can be opened without damage using non-destructive entry methods, including lock picking and bypass tools specific to residential hardware. Most house lockouts are resolved in under 20 minutes with no damage to the door or lock. If the cylinder has failed or the key has broken off inside, we’ll quote the repair before doing it.
After the Door Opens
Once you’re inside, we’ll test the lock from both sides and recommend a rekey if keys are missing or may be in someone else’s hands. That’s a practical next step many families take, especially after a lost key that could be found by someone unknown. The rekey is never pushed, simply offered with a written price.
Deadbolt Installation
Deadbolt Installation adds a hardened steel bolt that extends deep into the door frame, securing an exterior door against forced entry far better than a spring-latch knob alone. Blackthorn Locksmith & Security installs single-cylinder and double-cylinder deadbolts from Schlage, Kwikset, Yale, and Baldwin, with most standard installations running $120 to $280 per door including hardware and labor. The price depends on whether the door needs fresh boring, whether we’re matching an existing finish, and the grade of the deadbolt, from Grade 3 residential to Grade 1 commercial-rated units.
A properly installed deadbolt is only as strong as the strike plate and the screws holding it. We replace the short factory screws with 3-inch screws that reach the framing stud behind the door jamb on every installation, because the standard half-inch screws can be kicked out with one hit. That detail is why we photograph the work and explain what we’ve done before we leave.
Single vs Double Cylinder Deadbolts
A single-cylinder deadbolt uses a key on the outside and a thumbturn on the inside, which is right for most homes. A double-cylinder deadbolt requires a key on both sides and is sometimes used on doors with glass within arm’s reach of the thumbturn. We’ll walk through the fire-safety trade-off with you before recommending either option.
Strengthening the Whole Entry
A new deadbolt won’t matter if the door itself is weak or the frame is split. Our technicians check the door slab, the hinge screws, and the strike plate during installation and will flag anything that undermines the new hardware. When we leave, the front entry, the side-garage door, or whichever door we’ve worked on closes with a solid thunk instead of a rattle.
Lock Replacement
Lock Replacement means removing an existing lock entirely and installing new hardware, typically because the old lock is worn beyond repair, the finish no longer matches, the previous owner’s keys are unaccounted for, or you want upgraded security. Blackthorn Locksmith & Security replaces entry knobs, leversets, and deadbolts across the full brand spectrum, from everyday Schlage and Kwikset to high-security Medeco, Mul-T-Lock, and Baldwin hardware, with most replacements priced from $150 to $400 depending on the cylinder type and finish. We’ll remove the old hardware, prepare the door if needed, and leave the new lock working smoothly.
Replacement is a better choice than repair when the lock is older than 10 years, the cylinder is pitted, the internal springs are shot, or you simply want modern features like keyless entry. The old hardware gets set aside for you to keep or we dispose of it on request, and the new lock is keyed to your existing keys when possible so you don’t end up with a ring full of mismatched keys.
Matching Existing Finishes and Styles
A lock is one of the first things people touch when they enter a home, and mismatched finishes stand out. We stock satin nickel, oil-rubbed bronze, polished brass, and matte black across the major brands, and we’ll match the hinge finish and other door hardware so the entry looks intentional, not patched together.
High-Security Replacement Options
For homes that want more than a standard cylinder, we install Medeco and Mul-T-Lock high-security systems with patented keyways that can’t be duplicated at a hardware store. That means a key can’t be copied without your authorization, which matters when a housekeeper, contractor, or pet sitter has held a key in the past. The written quote includes the cylinder, the keys, and the labor, with no separate trip charge added on arrival.
Smart Lock Installation
Smart Lock Installation replaces or augments a standard deadbolt with an electronic lock that opens via keypad code, smartphone app, fingerprint, or a physical key backup. Blackthorn Locksmith & Security installs and programs smart locks from Schlage, Yale, Kwikset, and Baldwin, with typical installation running $150 to $350 plus the cost of the lock itself, which ranges widely from $150 to $500 depending on the model and connectivity features. The installation includes alignment, programming, app setup, and a walkthrough of every access method before we hand it over.
A smart lock is only reliable if the deadbolt aligns perfectly and the door doesn’t bind. Many smart lock failures we see come from a lock installed on a door that was never properly prepped, so the motor strains and drains batteries in weeks instead of months. We set the door up right first, then install and calibrate the lock.
Choosing the Right Smart Lock
The right lock depends on how your family actually moves through the house. A keypad model with no Wi-Fi is simple and reliable for a side-garage door. A Wi-Fi-connected lock lets you lock and unlock remotely and give temporary codes to a dog walker or house cleaner, which we can show you how to set up in the app. We’ll recommend based on your door, your habits, and what you’re actually willing to manage.
Codes, Phones, and Backups
We program the master code, set up temporary user codes, and connect the lock to your phone if the model supports it. Then we test the physical key override to make sure you’ll never be locked out if the batteries die. You keep every code; no code is stored by us or written down on any paperwork we leave behind.
Sliding Door Lock Repair
Sliding Door Lock Repair addresses the latches, foot bolts, mortise locks, and locking mechanisms on patio doors, balcony doors, and glass sliders that no longer secure properly. You need it when the sliding panel can be lifted off its track from the outside, the latch won’t engage, the key cylinder spins without turning, or the handle is loose and wobbly. Blackthorn Locksmith & Security repairs sliding door hardware for $95 to $260, depending on whether the fix is a simple latch adjustment, a cylinder replacement, or new secondary locking hardware.
Sliding doors are a common weak point in a home because the original latch is often little more than a friction hook. We’ll assess the track, the rollers, the latch, and the frame, and we’ll recommend a secondary lock like a foot bolt or a surface-mounted keyed latch if the existing hardware can’t be brought up to standard. The goal is a sliding door that a child can operate easily but an intruder can’t lift or pry.
Fixing Latches That Won’t Catch
A latch that misses the strike plate is usually a misalignment issue from a door that has settled or rollers that have worn down. The technician will adjust the door height and the strike plate position so the latch seats fully, then test it from the inside and outside. If the latch itself is cracked or the spring has failed, we’ll replace the component with a matching part rather than rigging a temporary fix.
Adding Security to Glass Sliders
For sliders that only have a flimsy factory latch, we often install a keyed lock or a foot bolt at the base of the door for a second point of contact. That gives the sliding panel a solid anchor point low on the frame, where it can’t be lifted or forced. We’ll show you how each lock works and explain why the combination matters before we leave.
Locked Out of Apartment
Locked Out of Apartment means being unable to enter your rental unit, whether the key was left inside, lost, broken in the lock, or the cylinder was changed without your knowledge. Blackthorn Locksmith & Security serves apartment residents across the country, typically for $95 to $200 per lockout, with the price set before the technician arrives. We respond 24 hours a day, and the technician will confirm your right to enter before opening the unit, which usually takes 15 to 25 minutes.
Apartment lockouts have an extra layer: property management. Some buildings require the leasing office to authorize any lock work, and we’ll always ask the right question up front so you don’t get stuck in a hallway waiting on a manager who was never contacted. If the property has its own locksmith, we’ll say so and help you reach the right channel instead of charging you for work that might violate a lease clause.
Working With Property Managers
If the building manager needs to approve the work, we can speak to them directly and provide our credentials, insurance information, and the written price before touching the door. That step protects you from lease violations and protects us from working on a unit without authorization. Most property managers are cooperative once they see a written quote and a uniformed technician on site.
After the Apartment Lockout
If the key broke inside the lock, we extract the broken piece and test the cylinder to make sure no fragments remain. If the cylinder was damaged, we’ll quote a replacement and, with management’s approval, install it that same visit. A rekey after a questionable lost key is also an option, and it’s often the fastest way to settle your mind when you don’t know where the key went.
Brands We Service
Blackthorn Locksmith & Security works across the full spectrum of residential hardware. We install and service Schlage and Kwikset daily, and we stock the pins, cylinders, and tailpieces needed to rekey or repair those locks on the first visit. For homes with higher-end hardware, we carry and service Baldwin and Yale, including their mortise locks and smart lock lines, and we regularly order genuine OEM parts when a finish or cylinder needs to match exactly.
On the high-security side, we install and service Medeco and Mul-T-Lock cylinders, including systems with patented keyways and key cards that prevent unauthorized duplication. If you have a Sargent or Abloy lock, our technicians can assess, service, and replace those as well. Whether you have a basic Kwikset knob on a rental or a Medeco deadbolt on your own front door, we can help.
Signs You Need a Pro Right Now
- Your key turns, but the lock doesn’t open. This often means a tailpiece has slipped or the cylinder has bound. Left unfixed, you can end up locked out entirely, and the lock may need to be drilled to get the door open.
- The deadbolt doesn’t fully extend. If the bolt stops short, the door isn’t actually locked even though you heard a click. A short-throw bolt can be pushed back with a thin tool, and the fix is usually strike plate alignment or a deeper bore.
- You just moved in and don’t know who has keys. The previous owners, their sitters, their contractors, and their family members could all hold copies. A rekey wipes that access clean in under an hour, and it’s the most practical home-security step you can take right after closing.
- The lock is loose or wobbly in the door. A wobbly lock is either a loose set screw or a cylinder that’s no longer seated properly. If it fails while you’re out, you may not be able to get back in, and a technician may need to disassemble the whole assembly to fix it.
- You’ve installed a new door or frame. A new door without a properly bored and aligned lock is an open invitation. We bore, mortise, and align the hardware correctly so the deadbolt throws fully and the latch seats without binding.
Our Process, Step by Step
- 1
Call and speak to a live person. You’ll reach a human being, any hour of the day or night. We’ll ask what’s going on, what lock or door is involved, and when you need someone there. Then we schedule a window that works for you and give you the technician’s name before they arrive.
- 2
Your technician arrives in uniform. The technician will introduce themselves, show identification, and walk you through what they see at the door. Shoe covers go on before entering, and a drop cloth goes down under the work area. If there are pets or children in the home, we’ll ask where they are so we can work around them.
- 3
Diagnosis and written price. The technician will assess the lock, door alignment, and hardware condition, then put a written price in front of you before any work begins. That price covers the parts, labor, and any hardware needed. If additional work is recommended, you’ll see a second written price for that work and you decide whether to proceed.
- 4
The work, done carefully. We open, rekey, repair, replace, or install the lock with the tools and parts brought for the job. The workspace stays covered, and we use lubricants that are safe for pets. The C.A.R.E. values guide how we work: clean up like it’s our own home, ask before we move or touch anything, respect the family’s time and quiet hours, and explain the price before the work.
- 5
A photo of the clean-up, then we walk the job. Before the technician leaves, they’ll show you the completed work, test every lock with you watching, and hand you the keys. You’ll get a photo of the clean-up. Then we’ll explain the 365-Day Done Right Promise: if it’s not done right, we make it right, in writing, on every residential job.
How Much Does Residential Locksmith Cost?
Residential locksmith pricing runs a broad range because the scope varies from a 10-minute lockout to a full high-security replacement. A typical lock rekey runs $65 to $180 per lock, while a standard house lockout runs $95 to $200 depending on time of day and lock type. Door lock repair typically falls between $85 and $220, and deadbolt installation runs $120 to $280 per door. Lock replacement lands at $150 to $400, smart lock installation at $150 to $350 plus hardware, and sliding door lock repair at $95 to $260.
What moves the price: the type of cylinder, the lock’s condition, whether the door or frame needs adjustment, the hour of the call, and the hardware grade you choose. What doesn’t move it: our promise on the phone. The written price covers everything, and there is no call-out surcharge added on arrival. You’ll see the full price in writing before the work starts, every single time. The 365-Day Done Right Promise covers every completed job, so if something isn’t right, we make it right at no additional charge. Call (818) 390-9007 for a free estimate on any residential locksmith service.
Where We Work
Blackthorn Locksmith & Security serves homeowners and businesses across the United States through local crews. Our technicians are dispatched from their own communities, carry the same tools and the same standards of care, and follow the Cedarwell Care Promise on every job, no matter the doorstep. Wherever your home is, you reach the same live person, the same written-price policy, and the same 365-Day Done Right Promise.
Frequently Asked Questions About Residential Locksmith
A residential locksmith is a trained professional who installs, repairs, rekeys, and opens the locks, deadbolts, and entry hardware on homes, apartments, and rental properties, as covered in The Complete Residential Locksmith Guide for Los Angeles Homeowners. Unlike a commercial locksmith who focuses on business doors and master key systems, a residential locksmith works on the front door, side doors, sliding patio doors, and smart locks that protect where people live. Blackthorn Locksmith & Security provides residential locksmith work with background-checked technicians and a written price on every job.
Most lock rekeys take under an hour, and a standard house lockout is resolved in 15 to 25 minutes. Deadbolt installation typically runs 45 to 90 minutes depending on whether the door needs fresh boring or just hardware replacement. Smart lock installation including programming and app setup usually takes one to two hours.
Residential locksmith services range from $65 for a single lock rekey to $400 or more for a high-security lock replacement. A standard lockout runs $95 to $200, door lock repair runs $85 to $220, and deadbolt installation runs $120 to $280 per door. The written price you receive before work begins is the price on the invoice, with no call-out surcharge added on arrival. Call (818) 390-9007 for an exact quote, estimates are free.
Yes, we service all four brands and carry their common parts on the truck, including pins, cylinders, tailpieces, and strike plates. We also install and service Medeco and Mul-T-Lock high-security systems. If you have hardware from a less common brand, we can usually source parts and handle the work on a follow-up visit.
Yes, a live person answers the phone 24 hours a day, 7 days a week, including holidays. We respond to lockouts at any hour, and the technician arrives in uniform with identification and a written price. No voicemail trees, no callback queues when a lock fails at midnight.
Every residential job is covered by the 365-Day Done Right Promise: if it’s not done right, we make it right, in writing. That promise covers the workmanship on locks we install, rekey, repair, or replace for a full year. Manufacturer warranties on hardware apply separately, and we’ll explain what’s covered on the specific lock you choose.
If you’re locked out, stay somewhere safe and have your identification ready, since the technician will verify you belong at the property. For scheduled work, clear the area around the door so the technician can work without moving your belongings, which also respects the C.A.R.E. standard we follow on every job. Keep pets in another room if they’re anxious around strangers, and have your questions ready so the technician can explain everything before the work begins.
Schedule Your Residential Locksmith Service Today
Blackthorn Locksmith & Security is ready when you are, day or night. Call (818) 390-9007 and speak to a live person who will schedule your service, answer your questions, and give you a free, no-obligation estimate before anyone is dispatched. You’ll get a written price before the work starts, a uniformed technician at your door, and the 365-Day Done Right Promise on every job. One call, and your locks are handled the right way.
Written by Shane Delaney, Owner at Blackthorn Locksmith & Security, serving homes across the United States since 2008.