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 Commercial Locksmith Nationwide
Blackthorn Locksmith & Security has handled commercial lock and door hardware for storefronts, offices, warehouses, and multi-tenant buildings across the United States since 2008. If you’re in Southern California, our Los Angeles Commercial Locksmith team brings the same expertise to local businesses. Our commercial technicians arrive background-checked and in uniform, with a written price in hand before any work begins. We know a failed storefront lock or a misaligned door closer means lost revenue, so our crews carry the parts to finish most jobs on the first visit. If your business door is not latching, locking, or closing the way it should, call (818) 390-9007 and a live person will answer, any hour, any day.
Key Takeaways
- Written price before work starts – not an estimate, not a verbal range. The number you approve is the number on the invoice.
- Live person answers 24/7 – no voicemail tree when a lock fails at midnight.
- Background-checked, uniformed technicians on every commercial call.
- 365-Day Done Right Promise – if the repair or installation is not done right, we make it right, in writing.
- Full hardware range – from Schlage and Yale to Medeco and Mul-T-Lock high-security cylinders.
High Security Locks
High Security Locks are cylinders and deadbolts engineered to resist picking, drilling, bumping, and unauthorized key duplication. Blackthorn Locksmith & Security installs and services high-security hardware from Medeco, Mul-T-Lock, and Abloy, and we cut restricted keys on-site so you control who can duplicate them. Expect $220 to $550 per opening installed, depending on cylinder grade and keyway restrictions; we always deliver a written price before the first screw comes out.
Restricted Keyways and Key Control
A restricted keyway means blanks are not available at hardware stores. Only the keyholder authorized on your account can order copies, and every cut is recorded. For a pharmacy managing staff turnover or a property manager issuing keys to contractors, that audit trail matters.
Drill-Resistant Hardware and Tailpieces
We install cylinders with hardened steel pins and reinforced tailpieces that defeat common drill attacks. The difference is measurable: standard cylinders fail in seconds against a cordless drill, while a Medeco or Mul-T-Lock cylinder will stall a thief long enough that they move on.
Commercial Door Repair
Commercial Door Repair covers the full working assembly: hinges, pivots, closers, thresholds, astragals, and the door slab itself when it sags, drags, or no longer seals. Blackthorn Locksmith & Security repairs or replaces these components on aluminum storefronts, hollow metal doors, and wood office entries. Most repairs run $160 to $400 per door; full slab or frame replacements run higher, and the written price you approve is the price on the invoice.
Hinge, Pivot, and Threshold Work
A door that scrapes the threshold or hangs low on the latch side puts strain on every other component. We replace worn continuous hinges, adjust or rebuild pivot sets, and shim or replace thresholds so the door sits square and closes against the stop. Left alone, a sagging door will eventually destroy the frame.
Sagging Slab and Frame Correction
When a hollow metal door drops, the fix is not always a new door. Often the frame needs adjustment or the hinge reinforcement is worn. We evaluate the full opening before recommending replacement, and we put that recommendation in writing with a flat price.
Master Key System
A Master Key System gives each employee or tenant a key that opens only their assigned doors, while a single master key opens all of them. Blackthorn Locksmith & Security designs, pins, and expands master key systems for offices, medical buildings, and retail operations. Typical pricing starts around $250 to $500 for system design and cylinder pinning, plus $30 to $60 per cylinder, with a written price delivered before we begin.
Levels of Access, Mapped to Your Floor Plan
We sit down with your building map and assign access by role: cleaning crew reaches storage and common areas only, managers reach the register room, owners reach everything. Each level is documented in a chart you keep, so when someone leaves, we know exactly which cylinders may need repinning.
Repinning and Expansion Without Replacing Hardware
When a key is lost or an employee departs, you should not have to replace every lock. We repin affected cylinders to a new key code while preserving the master hierarchy, and we do it at a fraction of replacement cost. Expansion works the same way: new locks are pinned into the existing system, and new keys are cut from the same hierarchy.
Replace Commercial Door Lock
To Replace a Commercial Door Lock means removing the existing cylinder or lockset and installing new hardware that matches your security and function needs. Blackthorn Locksmith & Security carries commercial-grade mortise locks, cylindrical levers, interconnected locks, and electronic keypads from Schlage, Yale, and Sargent. Expect $150 to $400 per opening for standard commercial replacement, hardware included, with a written price before work starts.
Mortise Lock Replacement
Mortise locks are the rectangular-bodied workhorses found in office doors and storefront entries. Replacement means matching the case size, trim, and function without butchering the door. We cut and fit the pocket cleanly, and the old screw holes are filled and finished.
Cylindrical Lever and Keypad Swaps
For back-of-house and office doors, a cylindrical lever or keypad is often the right replacement. We install hardware with the correct handing, backset, and door thickness, and we test the lock through ten full cycles before we leave.
Panic Bar Installation
Panic Bar Installation puts code-compliant exit devices on doors that require one-motion egress, such as rear exits, corridor doors, and assembly occupancy spaces. Blackthorn Locksmith & Security installs rim, vertical rod, and concealed vertical rod panic devices from major manufacturers, with typical costs ranging $500 to $1,200 per opening depending on device type and door width. The written price covers hardware, labor, and adjustment.
Rim Devices for Single Doors
A rim panic bar mounts to the inside face of a single door and latches into a strike on the frame. It is the most common and most cost-effective exit device we install. We set the latch depth so the door releases with one push and still seals against weather and noise.
Vertical Rod Devices for Double Doors
Double doors without a center mullion need vertical rod panic bars that throw bolts into the top and bottom of the opening. These are more involved, and we check the threshold and header alignment before drilling. A poorly aligned vertical rod device will bind and leave the exit unsafe, which is why our written quote always includes a full inspection of the opening.
Storefront Door Repair
Storefront Door Repair addresses the aluminum and glass entry systems common to retail and hospitality: the door itself, the pivot or hinge hardware, the header, and the frames. Blackthorn Locksmith & Security repairs or replaces these assemblies so the door opens smoothly, closes tightly, and locks against the strike every time. Repairs typically run $200 to $600, while a full storefront door replacement starts around $900.
Pivot and Bottom Sweep Adjustments
Aluminum storefront doors ride on top and bottom pivots that wear over time. When they do, the door drops, the bottom sweep drags, and the lock misses the strike. We adjust or replace the pivot sets and install a new sweep so the door clears the threshold and seals at the bottom.
Glass and Frame Alignment
Temperature cycles and heavy foot traffic flex storefront frames, and a quarter-inch shift is enough to keep the latch from engaging. We true the frame, replace worn gaskets, and reset the closer so the door latches without slamming. The goal is a door that opens for a customer with one hand and locks behind them when they leave.
Commercial Door Closer Repair
Commercial Door Closer Repair fixes the hydraulic or pneumatic devices that control how a door closes, preventing it from slamming or failing to latch. Blackthorn Locksmith & Security adjusts, rebuilds, or replaces overhead closers, and we stock replacement arms and valves for the brands most common in commercial buildings. Repair and adjustment runs $120 to $300; replacement with a new closer typically runs $250 to $550 installed, with a written price before work begins.
Closer Valve Adjustment and Seal Replacement
A closer that slams or creeps shut has an internal valve or seal problem. We adjust sweep speed, latch speed, and backcheck so the door closes firmly enough to latch but gently enough not to hurt a hand or a child. Where seals are blown, we rebuild the closer body in place and refill the fluid.
Closer Arm and Bracket Replacement
The arm on an overhead closer takes repeated abuse, and when it bends or the bracket pulls loose from the frame, the door loses all closing force. We replace arms and reinforce brackets with new fasteners sized for the door material, then test the door through a full open-close cycle under real use.
Commercial Lock Installation
Commercial Lock Installation covers new locks on new doors, conversion from one hardware type to another, and adding locks to doors that never had them. Blackthorn Locksmith & Security installs mortise locks, cylindrical levers, deadbolts, exit devices, and electronic access hardware, with standard installs ranging $150 to $450 per opening and high-security or electronic hardware running higher. Every quote is written, and the written price is the final price.
New Construction and Renovation Installs
We work from door schedules and finish hardware specs when a building is going up or being renovated. That means the right backset, handing, and finish on every door, installed before the painters arrive. We also verify that each opening functions after trim and paint, not just when the door is bare.
Retrofit and Hardware Conversion
When an old lock is no longer secure or the door is being repurposed, we convert the opening to the new hardware while salvaging what we can. The old hardware is removed cleanly, the new lock is fitted to the existing prep where possible, and the door is tested to confirm the latch, deadbolt, and strike all align.
Brands We Service
We install and service Medeco high-security cylinders, including the M3 and Biaxial lines, and we stock Medeco tailpieces, springs, and driver pins to rebuild them properly in the field. Medeco’s key control program is one of the strictest in the industry, and we handle the paperwork and key cutting for our commercial accounts.
Yale commercial hardware covers a wide range, from mortise locks to exit devices to keyless entry, and we have installed and serviced Yale throughout office buildings and retail sites nationwide. When a Yale closer fails or a Yale mortise cylinder needs repinning, we have the parts and the know-how to make it right on the first visit. Whether you have these brands or any other make, we can help.
Signs You Need a Pro Right Now
- A key turns but the lock will not throw. This usually means the cylinder tailpiece is broken or the latch is misaligned. A door that will not lock is an open invitation, and the problem will not fix itself.
- The door will not close or latch on its own. A failed closer or a sagging hinge leaves your entry propped open. That affects security, heating and cooling costs, and whether your building passes inspection.
- Employees report keys working only sometimes or with force. Worn pins and worn keys only get worse. When staff start jiggling keys, the cylinder is usually close to failing completely, usually at the worst time.
- A panic bar is stiff, noisy, or does not release on the first push. Exit devices are life-safety hardware. If someone cannot get out in an emergency, the liability is serious. This needs professional service immediately.
- You cannot account for every key to the building. If a former employee left without returning keys, or a contractor made copies, you have no idea who can walk in. Repinning or upgrading to restricted hardware is the only way to close that gap.
Our Process, Step by Step
- 1
Call and talk to a live person. You reach Blackthorn directly, any hour. We ask what is wrong, what kind of door and hardware you have, and when you need us.
- 2
We assess the opening and inspect the full assembly. The technician checks the lock, strike, hinges, closer, and threshold. We test the door under normal use, not just while it sits open.
- 3
You receive a written price before any work begins. That price includes hardware, labor, and any adjustments needed to make the job right. If we discover something unexpected, we stop and get your written approval before changing the scope.
- 4
We do the work and clean as we go. Shoe covers and drop cloths go down before we start. We use quiet tools where we can, and we respect the space as the work happens.
- 5
We test and document the finished job. The door is cycled repeatedly, the lock is verified, and we photograph the completed work and the clean-up before we leave. Then the 365-Day Done Right Promise applies, in writing.
How Much Does Commercial Locksmith Cost?
A standard commercial lock replacement or installation typically runs $150 to $450 per opening, including hardware and labor. High-security cylinders from Medeco or Mul-T-Lock run $220 to $550 per opening. Panic bar installation runs $500 to $1,200 per door. Door closer repair runs $120 to $300, and a replacement closer runs $250 to $550. Storefront door repair spans $200 to $600, with full replacement starting around $900. For a detailed breakdown, see our Commercial Locksmith cost guide.
What affects the price: hardware grade and brand, door type and condition, accessibility, and whether the opening needs frame or hinge work. The way to avoid overpaying is to demand a written price before work starts and to refuse any service that gives only a verbal range. Blackthorn provides that written price every time, and it is the price on the invoice. A free estimate includes the full inspection of the door, the lock, and the frame, so call (818) 390-9007 and get the number before you commit.
Where We Work
Blackthorn Locksmith & Security serves businesses and homeowners across the United States through local crews dispatched from our service network. From single storefronts to multi-location office buildings, our background-checked technicians arrive in uniform with the same written-price promise and the same 365-Day Done Right Promise. Call us from anywhere in the country and a live person will answer.
Frequently Asked Questions About Commercial Locksmith
A commercial locksmith installs, repairs, and maintains locks, door hardware, and access control on commercial properties, including storefronts, offices, warehouses, and multi-tenant buildings. Following a Commercial Locksmith Maintenance Schedule: What to Do and When helps prevent emergencies and extend hardware life. Blackthorn Locksmith & Security handles everything from mortise locks and exit devices to master key systems and high-security cylinders. The work covers the full door assembly, not just the lock body. Call (818) 390-9007 for a written price on any commercial job.
Most commercial lock replacements and repairs take between one and three hours per opening, depending on hardware type and door condition. Panic bar installation and master key system design typically take longer, often half a day or more. We carry the common parts on the truck so most jobs finish on the first visit. Ask for a time estimate when you call.
Standard commercial lock replacement runs $150 to $450 per opening, high-security cylinders run $220 to $550, and panic bars run $500 to $1,200 per door. Door closer repair runs $120 to $300, and storefront door repair spans $200 to $600. Blackthorn gives you a written price before any work starts, and that written price is the price on the invoice. Call (818) 390-9007 for a free estimate with no obligation.
Yes, we install, service, and repin Medeco, Yale, and Mul-T-Lock hardware, including high-security and restricted keyway systems. We stock OEM parts for these brands and our technicians are trained on their specific installation and keying requirements. Whether your building uses one brand or a mix, we can service it. Tell us what hardware you have when you call.
Yes, a live person answers our phone 24/7, including holidays, and we dispatch for commercial lock emergencies nationwide. If a door will not secure or a key breaks in a cylinder, we prioritize that call because an unsecured opening is a real problem. Call (818) 390-9007 and tell the person who answers exactly what is wrong, and we will get a technician moving.
Every Blackthorn job carries the 365-Day Done Right Promise: if the work is not done right, we make it right, in writing. Manufacturer warranties on hardware apply on top of that. If a lock fails or a door stops latching within a year of our work, call us and we will address it. The promise covers all completed work, no fine print.
Clear access to the affected doors and let us know who is authorized to approve work on site. Have any existing key information or hardware documentation nearby if you have it. We place drop cloths and wear shoe covers, and we will walk you through the written price before any work starts. A photo of the finished work and clean-up is sent before we leave.
Schedule Your Commercial Locksmith Service Today
Call (818) 390-9007 to schedule a commercial locksmith visit with a written price before any work starts. A live person answers 24/7, and our background-checked, uniformed technicians carry the hardware to finish most jobs on the first trip. No surprise line items, no bait pricing, and the 365-Day Done Right Promise on every job. Get a free, no-obligation estimate when you call.
Written by Shane Delaney, Owner at Blackthorn Locksmith & Security, serving businesses across the United States since 2008.