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Get your free estimateMedeco Locksmith in Millbrae, CA | Citadel Locksmith
We provide Medeco service in San Bruno and independent Medeco locksmith service across Millbrae, from rekeying a Biaxial cylinder on a 1950s rancher to fitting a new Maxum deadbolt on a recently built ADU off El Camino Real. What sets our Medeco work apart in this city is simple: we stock the vintage mortise-to-cylindrical conversion kits and reinforced strikes that Millbrae’s postwar door stock actually requires. Most shops don’t, which is why their techs leave and come back twice. Call (833) 589-8078 for an honest conversation about your lock before anyone gets in a van.
Why Millbrae Residents Choose Us for Medeco Service
Not all locksmiths speak Medeco, and it shows the moment a restricted keyway is involved. We do. Roland Vásquez, our owner, learned the mechanical end of this trade at City College of San Francisco’s locksmithing program, and he has spent decades since working high-security cylinders the way other techs work Kwikset. The Medeco sidebar mechanism, the angled cuts, the patent-protected key control, those aren’t exotic to us. They’re routine. For homeowners across Millbrae, that matters because a Medeco lock is only as good as the technician servicing it. A sloppy re-pin or a knockoff key blank turns a $200 cylinder into a decorative doorknob. We use genuine Medeco cylinders, pins, and key blanks whenever the keyway authorization allows it, and we’ll tell you plainly when a tired cylinder is worth re-pinning versus replacing. You get a straight answer, not a sales pitch.
We’re local to this market in the way that matters. A locksmith who knows Millbrae’s housing stock knows that a large share of these 1940s and 1950s stucco ranchers still carry original mortise locks on wood doors that have swollen and shifted for sixty-plus years. When you call us for a Medeco upgrade or repair, we arrive anticipating that. The right strike, the right drill prep, the right shims ride in the truck. Millbrae service area work is our daily reality, not a one-off drive down from the city. That means faster diagnostics and fewer return trips. One call covers your car, your home, and your emergency, and for Medeco owners specifically, it covers the lock that most generalist shops would rather not touch.
Styles & brands we work with







Common Medeco Locksmith Problems We Solve in Millbrae
- Binding or stiff rotation during wet winters. Millbrae’s fog-influenced winters don’t freeze much, but the moisture does swell wood doors and jambs. A Medeco Maxum deadbolt that throws smoothly in August will suddenly hang up in February. The key turns, the sidebar fights you, and the bolt won’t seat. We fix the mechanical cause: door realignment, strike adjustment, and cylinder servicing, so the lock operates cleanly year-round.
- Worn or dirty pin tumbler and sidebar assemblies in older Biaxial and Original cylinders. These locks run for decades, which means the pins wear and debris builds up inside the cylinder. A Medeco that feels gritty or needs a wiggle to turn is telling you something. We clean, lubricate, and re-pin with genuine Medeco components when the wear is minor, and we’ll recommend replacement when it isn’t.
- Strike-plate and jamb misalignment on postwar stucco ranchers. The original mortise cutouts on 1950s Millbrae doors were never designed for a modern deadbolt’s bolt dimensions. When a Medeco retrofit was done without proper prep, the bolt drags or fails to extend fully. We cut the jamb cleanly and install a reinforced strike that actually accepts the bolt. A lock is only as strong as the decision behind it, and the decision to reinforce that jamb is what keeps the lock doing its job.
- Lost or duplicated restricted Medeco keys with no card on file. Medeco’s key control is the entire point of the system, but when the original authorization card is lost and the keyway can’t be duplicated, you need a path forward. Usually that means rekeying to a new keyway or swapping the cylinder. We’ll walk you through exactly what’s involved, the cost, and the timeline before we touch anything.
- Retrofitting Medeco hardware onto original mortise-equipped doors. Many Millbrae homes still have the original mortise lock body in the door, and a new Medeco Maxum deadbolt won’t simply drop in. The door prep is wrong. We carry conversion kits and the drilling jigs to do this cleanly, without butchering the door. Whether it’s one front door or ten doors across a townhome complex, the prep is everything.
Medeco Service in Millbrae: What Local Conditions Mean for Your Equipment
The Broadway and Millbrae Avenue neighborhood pockets are full of nearly identical 1950s front doors, and that sameness is actually useful if your locksmith pays attention. Those original mortise locks sit in a 2-1/8 inch crossbore that was cut for a lock body half the size of a modern Medeco Maxum. When a homeowner asks us to replace that old mortise with a high-security deadbolt, we don’t show up with just a lock in a box. We bring a vintage mortise-to-cylindrical conversion kit, a reinforced strike plate, and the faceplate hardware to make the retrofit look like it was born there. That’s the difference between a Medeco install that seats flush and one that leaves gaps, drag marks, and a door that never quite closes right. A Medeco cylinder’s precision is wasted on a poorly prepped door. In Millbrae, the prep is the hard part, and it’s the part we’ve already solved for.
Here’s what that looked like on one call. On a foggy spring afternoon off Millbrae Avenue, our tech found a 1954 rancher whose original mortise lock had been swapped years ago for a Medeco Biaxial cylinder. Every time the wood door swelled, the key bound and the bolt refused to throw. We cleaned and re-pinned the Biaxial, shimmed and reinforced the strike plate, and realigned the jamb so the bolt moved smoothly. One visit, because the truck already carried the right vintage mortise cylinder and strike for that postwar door prep. That’s what Medeco service in Millbrae should look like.
Medeco Models & Products We Service in Millbrae
We work on the full family of Medeco hardware: the classic Medeco Original cylinder, the Biaxial cylinder with its two-level sidebar engagement, the M3 and M4 product lines with their upgraded key control and bump resistance, and the Maxum deadbolt line that’s become the standard for residential high-security upgrades. When a cylinder needs pins, we stock genuine Medeco pins. When a key needs to be cut, we follow the keyway authorization path, which sometimes means working with the original card or setting up a fresh keyway with a new cylinder. We don’t substitute aftermarket internals into a UL 437-rated lock. The rating matters, and so does the key control. For Millbrae homeowners, the practical benefit is this: we can usually service your Medeco in one visit because the parts that keep these locks running are already in our inventory. For a full rundown of Medeco sales & service, that page covers our brand-level expertise in more depth.
Medeco Service Pricing in Millbrae
Honest pricing starts with understanding what’s actually wrong. A Medeco service call in Millbrae is a diagnosis first, a repair second. Here’s what you should expect:
- Service call fee: $65 – $95, which covers the technician’s dispatching and on-site diagnosis.
- Medeco lock repair or re-pinning: $40 – $120, depending on cylinder condition and parts needed.
- Full rekey of an existing Medeco cylinder to a new key: $55 – $150, depending on whether the keyway is available for duplication or needs replacement.
- New Medeco Maxum deadbolt installed on a standard prepared door: $180 – $340, including the lock, cylinder, and labor.
- Vintage mortise-to-cylindrical conversion (common in Millbrae’s 1950s ranchers): $90 – $160 in labor on top of the lock price, since the door prep has to be redone.
Every quote is given on the phone before anyone is dispatched, and that quoted price is the price on the invoice. There’s no call-out surcharge added when the tech arrives, and no bait-priced teaser rate that evaporates. If the diagnosis reveals something different from what we discussed, we stop and call you before doing any work. Call (833) 589-8078 for a free estimate on your specific lock and door.
Serving Millbrae, CA — Our Local Coverage Area
We’re based in the Millbrae area and know this community well, and we also offer Burlingame Medeco service. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Medeco Locksmith in Millbrae
Yes, in most cases we can. If the original card is missing, the existing Medeco keyway usually can’t be duplicated, so we’ll rekey the cylinder to a new restricted keyway or swap the cylinder entirely. That re-establishes key control under your name. We’ll explain the cost and timeline before starting. Call (833) 589-8078 and we’ll figure out your exact situation in five minutes.
Your door is swelling. Millbrae’s wet winters soak into older wood doors and jambs, and that expansion changes the alignment between the bolt and the strike. A Medeco cylinder’s tight tolerances make it more sensitive to that shift than a loose conventional lock. We fix it by clearing the cylinder, then realigning the door or adjusting the strike so the bolt throws freely. It’s a mechanical fix, not a new lock. Call us and describe what you’re feeling in the key, we’ll tell you what we think it is.
We stock the Maxum deadbolt and, just as importantly, the conversion hardware that 1950s door prep requires. The original mortise cutout won’t accept a modern cylindrical deadbolt without a conversion kit and a properly cut crossbore. We bring both. You’re not paying for a second trip because the truck was short a strike plate.
Yes. We can set up a Medeco master-key system across multiple properties in Millbrae and provide Medeco in Hillsborough, including newer infill townhomes and older single-family rentals. You get one key for yourself and restricted individual keys for tenants or units, all on Medeco’s patent-protected keyways. We’ll map the system on paper first and review it with you before cutting anything.
The Biaxial is the older workhorse with two-level angled cuts and a hardened steel sidebar. The M3 and M4 lines add upgraded key control, stronger bump resistance, and newer patent protection. For a Millbrae homeowner, both are dramatically stronger than a standard deadbolt, but the M3 is the better choice if you want the newest keyway protection. We can look at your door and your existing hardware and tell you which one fits your situation and budget. Call (833) 589-8078 for a straight answer.
Service Areas Near Millbrae
Our Medeco service area extends well beyond Millbrae to the surrounding Bay Area communities. We regularly serve customers in Mountain View, Inverness, Petaluma, and Pittsburg, plus the nearby neighborhoods of Loyola and Temelec. If you’re in one of those areas and need Medeco work, we’re familiar with the housing stock and the hardware. See Medeco service in Larkspur or Medeco service in North Richmond for location-specific details in those areas.
Book Your Medeco Service in Millbrae Today
If your Medeco lock is binding, your keys are restricted, or you’re ready to upgrade a 1950s rancher to real high-security hardware, call Citadel Locksmith at (833) 589-8078 for Medeco repair in South San Francisco and Millbrae. We’ll quote the full price on the phone, answer your questions plainly, and get your Medeco working the way it should. Same-day service is available for urgent lock and rekey situations in Millbrae.
Written by Roland Vásquez, Owner at Citadel Locksmith, serving Millbrae and the Bay Area with independent Medeco service.