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.
Fast, Reliable Commercial Locksmith Across Brentwood
Commercial locksmith work in Brentwood runs $95 – $240 for most jobs, with rekeying a standard commercial lever or knob lock typically costing $35 – $85 per cylinder. Master key systems and panic bar installations land higher, usually $180 – $450 depending on door count and hardware grade. If you’re managing a retail space on Sand Creek Road or an office suite near the Streets of Brentwood, call (910) 714-4287 and you’ll reach a live person who can walk through exact pricing before anyone is dispatched.
We know Brentwood’s commercial and business districts, from the newer flex spaces along Lone Tree Way to the storefronts clustered around Balfour Road. Our Commercial Locksmith team stages locally, so response to a storefront lockout or a broken panic bar in Brentwood doesn’t come with a cross-county dispatch delay. You get a written quote on the phone, a named technician sent by photo before arrival, and a price that matches the invoice.
Why Dunmore Locksmith Is Brentwood’s Preferred Commercial Locksmith Company
Dunmore Locksmith operates as the Threshold Group member business serving Brentwood and the surrounding East Contra Costa corridor. We’ve been doing this since 2007, and the Threshold Standard applies to every Brentwood job: background-checked, identity-verified technicians who arrive in a clean marked uniform and show a photo ID badge at the door. Before the visit, you receive the tech’s name and photo. If someone shows up who you weren’t told to expect, that visit is covered at no charge.
Brentwood business owners tell us the same thing over and over: they want to know exactly who is walking through their door before they turn the handle. That’s the whole reason Dunmore exists. The name comes from old words for a great fort, a stronghold built to keep what is inside safe. Every repair we make in Brentwood carries the 365-Day Done Right Promise: a written guarantee stamped on the job. If the repair fails within a year, we return at no charge.
Phones here are answered by a live person 24 hours a day, 365 days a year. No voicemail tree, no chatbot. When a Brentwood restaurant loses its only working back-door lock on a Friday night, we answer, we quote, and we dispatch based on what the job actually needs, not a bait price that balloons after arrival.
Mortise Lock Replacement in Brentwood
Mortise lock replacement in Brentwood means swapping out the rectangular lock body that sits inside a pocket cut into the edge of a commercial door, common in older storefronts and office suites along Oak Street and Second Street. These are not the standard bored cylindrical locks you find in newer strip-mall spaces. A mortise lock replacement in Brentwood typically runs $180 – $320 including the hardware and labor, depending on whether the existing mortise pocket needs to be recut or the new lock drops into the original preparation.
We see mortise locks fail two ways in Brentwood: worn internal springs that leave the latch sluggish, and misaligned strike plates from doors that have settled in the hot, dry summer months. Neither one is a reason to replace the entire door. In most cases we can install a new mortise body, rekey the cylinder to match your existing keys, and have the door latching cleanly again in under an hour.
When a rebuild makes more sense
If the mortise lock body is intact but the cylinder is worn, rekeying runs $35 – $85 per cylinder and takes about fifteen minutes per door. If the lock body itself is binding or deadbolting inconsistently, replacement is the better call. We stock mortise bodies sized for the common commercial doors in Brentwood’s older commercial strips, which saves a second trip to a supply house in Concord or Antioch.
Matching finishes and escutcheons
Older Brentwood storefronts often have original brass or oil-rubbed bronze escutcheons that are no longer standard production. We can match those finishes and avoid the awkward look of a shiny new lock plate on a twenty-year-old door. If the existing hardware is beyond saving, we’ll walk through finish and trim options before any work starts so the door looks right when we leave.
Replace Commercial Door Lock in Brentwood
Replacing a commercial door lock in Brentwood generally costs $95 – $180 for a standard grade-2 cylindrical lock and $180 – $340 for a heavy-duty grade-1 or high-security cylinder, labor included. Most Brentwood commercial spaces, whether a dental office near the Kaiser facility on Balfour or a warehouse unit off Sunset Road, use cylindrical locks that can be replaced without modifying the door prep. The job takes under an hour and we carry common finishes on the truck.
The decision point is usually this: a failed lock on a high-traffic door should be replaced, not repaired. Springs wear out, tailpieces snap, and cylinders develop slop that no rekey corrects. For doors that need to hold up to daily employee and customer traffic, we recommend grade-1 hardware from Medeco or Schlage. The upgrade costs more upfront, but the mechanism is built for ten times the cycle count of a builder-grade lock.
Upgrading from builder-grade hardware
A lot of Brentwood’s commercial suites were finished with the same budget Kwikset or no-name cylindrical locks used in residential construction. Those locks are fine for a closet door and undersized for a commercial entry. We regularly swap them for ANSI grade-1 cylindrical locks with hardened steel tails and anti-pick cylinders. The replacement is straightforward, the existing door prep usually accepts the better hardware without modification, and the difference in how the door feels is immediate.
Key control after a lock replacement
If your Brentwood business has had employees come and go, a replacement is the right time to ask about restricted keyways. Medeco and Mul-T-Lock cylinders can only be duplicated by a registered locksmith with an authorization card, which means a former employee cannot walk into a hardware store and get a copy made. We set up key control systems for Brentwood offices all the time, and the per-cylinder cost is only slightly higher than standard keyways.
Trusted Brands We Service in Brentwood
We’re factory-authorized to install and service hardware from Schlage, Medeco, Mul-T-Lock, Kwikset, Yale, Baldwin, Sargent, and Abloy. For Brentwood commercial customers, that means we don’t just sell you a lock: we stock replacement cylinders, tails, and strike plates for the common Medeco and Yale hardware already installed in East Contra Costa buildings. If a Brentwood office has an existing Medeco key system, we can extend it without swapping every door. If the hardware is worn Baldwin or Kwikset from the original build-out, we can rekey or replace it with something that will actually hold up to the next fifteen years of use.
Common Commercial Locksmith Problems We See in Brentwood Homes
- Original construction keys still operating on exterior doors. Many Brentwood homes built between 1995 and 2010 in master-planned subdivisions like Deer Ridge and Shadow Lakes were sold with builder’s locks keyed alike. A surprising number of those homes still have exterior doors, side gates, and garage entry doors all operating on the original construction key that was passed to contractors, subcontractors, and real estate agents during the build.
- Summer deadbolt binding from thermal expansion. Brentwood routinely hits 100°F in summer, hotter than most of Contra Costa County. Steel door frames and deadbolt throw bolts expand in that heat, and a lock that turns fine in March can bind hard in July. The fix is usually a strike plate adjustment, not a new lock.
- Worn builder-grade lever sets on hollow-core interior doors. The interior lever hardware installed in Brentwood’s boom-era subdivisions was never meant to last twenty years. We regularly see office and home lever sets with broken return springs and floppy handles, especially on doors that get heavy daily use.
- Incomplete home-sale rekeys that leave side access points open. A quick rekey of the front door and the door from garage to house misses the side gate and the exterior garage entry door. In Brentwood, those access points often still work on the original construction key, meaning multiple people who worked on the home years ago may still be able to open something you think is secured.
Pricing for Commercial Locksmith in Brentwood, CA
Here are honest Brentwood market ranges, quoted before dispatch, with no call-out surcharge added on arrival:
- Rekey a standard commercial lock cylinder: $35 – $85
- Commercial lockout: $75 – $140
- Commercial door lock replacement (grade 2 cylindrical): $95 – $180
- High-security or grade 1 lock replacement (Medeco, Mul-T-Lock, Schlage): $180 – $340
- Mortise lock replacement: $180 – $320
- Panic bar installation: $220 – $450 per door
- Master key system (up to 10 cylinders): $180 – $400
- Access control or smart lock integration: $250 – $600 per entry point
What moves the number: door count, cylinder count, hardware grade, and whether we’re extending an existing key system or starting fresh. The quote we give you on the phone is the price on the invoice. No dispatch fee added at the door, no “unexpected complications” that double the bill. Call (910) 714-4287 and we’ll price your Brentwood job while you’re on the line.
We Also Serve Cities Near Brentwood
Our Brentwood commercial locksmith coverage extends naturally into the surrounding East Contra Costa communities. We run service to Oakley, Discovery Bay, Antioch, and Byron throughout the week, often on the same day as the call. Whether your business is in a Brentwood strip mall or a Discovery Bay marina office, the same Threshold Standard applies: named technician, written price, 365-day guarantee.
Serving Brentwood, CA - Our Local Coverage Area
We’re based in the Brentwood area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Commercial Locksmith in Brentwood
If you never rekeyed after closing, yes, there’s a real chance the original construction key still operates your exterior locks. Many Brentwood subdivisions were built with dozens of homes keyed alike. The only way to know for sure is to rekey, and we can do that for $35 – $85 per cylinder, which retires every old key in one visit. Call (910) 714-4287 and we’ll schedule a time that works.
That’s thermal expansion. Brentwood’s summer heat, regularly over 100°F, causes steel door frames and deadbolt throw bolts to expand. The lock isn’t broken; the strike plate is misaligned under heat load. We adjust the strike plate or deepen the pocket slightly, and the deadbolt turns smoothly again. Simple fix, usually under $100.
Yes. In most Brentwood homes, the original Kwikset cylinders can be swapped to grade-1 Schlage or Medeco cylinders while keeping the existing trim, or we can replace the entire lockset if the trim is worn. The per-lock cost for a cylinder upgrade runs $85 – $180. You get much better pick resistance without changing the door prep.
For most Brentwood doors built after 1995, a smart lock retrofits into the existing single-bore prep without drilling. We install the smart lock, rekey or match it to your existing key, and walk you through programming codes and app access. Budget $250 – $450 per entry point depending on the lock and whether you want app integration or just a keypad. The quote we give you on the phone is the price on the invoice.
We handle both. Commercial work in Brentwood includes storefront lock replacement, panic bar installation, master key systems, access control, and file cabinet locks, along with the same residential rekeying and lock repair work that has kept us busy here since 2007. One number covers it all: (910) 714-4287.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Brentwood since 2007.






