High Security Locks in Sylmar · 24/7 mobile
High Security Locks in Sylmar, California
Crenshaw Lock Company installs pick-, bump- and drill-resistant high security locks and restricted keys across Sylmar, California. We are a fully mobile locksmith available 24/7, so we come to your home, barn or business. Call (323) 997-8867 to talk through your property and options.
- Mobile to your Sylmar location
- Available 24/7
- Price quoted before we start

A high security lock is built to resist the methods that defeat ordinary hardware: picking, bumping, drilling and forced removal. Better pin designs, hardened inserts and restricted keyways make the cylinder much harder to attack and keep key duplication under control. In Sylmar, where properties range from tract homes to gated subdivisions to large equestrian lots, the right upgrade depends on how your property is actually used.
Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar and our team work entirely on a mobile basis. There is no storefront to visit. We bring the hardware to you, look at your doors, frames and gates in person, and install on the spot.
A lock is only as strong as the door and frame holding it. Sylmar sits at the center of some of the region's most significant earthquake history, and many older homes have frames that have shifted over the decades. We check that the door, strike and jamb are sound before we fit a premium cylinder, because a strong lock in a racked frame will not perform as it should.
How it works in Sylmar
- 1
Talk through your needs
Call (323) 997-8867 and tell us what you want to protect: a front door, a gated entry, a barn, a detached workshop or a business. We ask about current locks, who has keys and any past problems so we can suggest suitable hardware.
- 2
Inspect the door and frame
We come to your property and examine the door, jamb, strike plate and surrounding structure. On older foothill homes we look for settling or racking that stops a deadbolt from throwing cleanly, since that affects which lock will work well.
- 3
Choose the security level
We explain the differences between pick-, bump- and drill-resistant cylinders and between restricted and standard keyways. You decide how much protection and key control fits your property and routine.
- 4
Install and correct the hardware
We fit the new high security lock, and where needed realign the strike, adjust the jamb or reinforce the plate. For outbuildings we can use weather-resistant, shrouded designs suited to dust and exposure.
- 5
Test and hand over keys
We cycle the lock repeatedly, confirm smooth operation from both sides, and give you the keys along with guidance on key control and any follow-up copies.
Need high security locks in Sylmar?
24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.
What affects the price
- The grade and style of high security cylinder or deadbolt you choose, including whether it uses a restricted keyway.
- How many doors, gates or outbuildings are being upgraded in one visit.
- Whether the door or frame needs repair, reinforcement or realignment before the lock will work properly.
- Whether you want existing locks rekeyed to match, or entirely new hardware throughout.
- Weather-resistant or shrouded designs for barn, tack-room and trailer use versus standard interior-door hardware.
- Number of additional restricted keys needed and whether integration with a keypad, gate or smart lock is involved.
Why Sylmar chooses us
- Fully mobile, so every consultation and installation happens at your property where we can see the actual door and frame.
- 24/7 availability, including for urgent upgrades after a break-in or a move.
- Serving Los Angeles and Ventura County since 1987, with the experience to know what holds up locally.
- We check frame and strike condition, which matters in Sylmar homes affected by settling and past earthquakes.
- Experience with a mix of properties: tract homes, gated subdivisions, equestrian lots and institutional-area businesses.
- Honest recommendations; we will tell you when a simpler upgrade or rekey meets your needs.
High Security Locks across Sylmar
Sylmar climbs from the valley floor into the San Gabriel foothills, and security needs change along the way. In gated communities like Rancho Cascades, residents often deal with driveway keypads, call-boxes and front doors that all need attention after a home sale. A high security deadbolt with a restricted key gives new owners better control over who holds copies, and we can pair that with rekeying the house so previous keys no longer work.
Around El Cariso and the equestrian properties off Hubbard Street and Foothill Boulevard, locks face harsh conditions. Santa Ana dust and grit can seize ordinary padlocks on barns and tack rooms, so weather-resistant, shrouded high security padlocks and cylinders are a practical choice. In the Olive View foothill district, older homes may have frames that have shifted since the 1971 Sylmar and 1994 Northridge earthquakes, so we realign strikes and jambs as part of the job.
Whether you are in ZIP code 91342 near Olive View-UCLA Medical Center, close to Veterans Memorial Community Regional Park, or off the I-5, I-210 or SR-14 corridors, we come to you. Call (323) 997-8867 any time of day or night.
- Rancho Cascades
- El Cariso
- Olive View / foothills district
Locked out or need a locksmith now?
24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.
Other Sylmar locksmith services
Access ControlInstall keypad, card and fob access-control systems for business entrances.
Automotive LocksmithMobile auto locksmith for cars, trucks, motorcycles, RVs and fleets.
Broken Key ExtractionKey snapped in a lock or ignition? We extract the piece and cut a replacement.
Business LockoutLocked out of a store, office or commercial building? Rapid commercial entry.
Car Key ReplacementReplace lost or broken car keys — cut and programmed on site, even with no original.
Car LockoutKeys locked in the car or trunk? Fast, damage-free vehicle unlocking.
Commercial Door HardwareRepair and replace storefront, aluminum-frame and mortise door hardware.
Commercial LocksmithBusiness locksmith for offices, stores, warehouses and industrial sites.
Deadbolt InstallationAdd or replace single- and double-cylinder deadbolts for stronger doors.
Door Closer RepairRepair, adjust and replace hydraulic door closers on commercial doors.
Emergency Locksmith24/7 emergency dispatch for lockouts and urgent lock failures across Greater LA.
Gate Lock RepairRepair and install gate locks and latches, including keypad and smart gate locks.
House LockoutLocked out of a house, apartment or condo? Damage-free entry on location.
Ignition RepairRepair or replace ignition cylinders and fix keys that won't turn.
Key DuplicationCut and copy house, office, mailbox and restricted keys on location.
Key Fob ReplacementReplace and program remote key fobs and smart/proximity keys.
Lock InstallationInstall new locks on new doors or where none existed before.
Lock RekeyingRekey existing locks so old keys stop working — ideal after a move or sale.
Lock RepairFix sticking, jammed, loose or misaligned locks, deadbolts and latches.
Lock ReplacementSwap worn, damaged or outdated locks for new hardware keyed to your needs.
Mailbox Lock ReplacementReplace and rekey residential, cluster and community mailbox locks.
Master Key SystemDesign and install master-key and restricted-key systems with key control.
Panic Bar InstallationInstall and repair panic bars, exit devices and emergency-exit hardware.
Residential LocksmithFull home locksmith service — rekeys, replacements, repairs and upgrades.
Safe LocksmithOpen, repair and service home and commercial safes; change combinations.
Smart Lock InstallationInstall, set up and troubleshoot smart, keyless and keypad locks.
Transponder Key ProgrammingProgram chip/transponder keys to your vehicle's immobilizer.
See all of our Sylmar services, or our citywide high security locks page.
High Security Locks in Sylmar — FAQs
What makes a lock high security?
Do you have a shop in Sylmar I can visit?
Can you upgrade locks on my barn or tack room?
My deadbolt barely throws in my older home. Will a new lock fix it?
Can you help after buying a home in a gated community like Rancho Cascades?
Are you available at night or on weekends?
Will high security locks work with my smart lock or keypad?
Does a high security lock make my door impossible to break into?
Reviewed by David Shar — Owner & Lead Technician
Crenshaw Lock Company has served Greater Los Angeles & Ventura County since 1987.
Last updated 2026-10-12.