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Get your free estimateMedeco Locksmith in San Francisco, CA | Citadel Locksmith
Citadel Locksmith provides independent Medeco service across San Francisco, from Medeco service in Noe Valley to cylinder rebuilds in the Richmond and full high-security installations in the Mission. The difference here is that we work on Medeco locks inside buildings most locksmiths have never had to think about: Victorians built in 1908, hillside flats where the gate has been catching since before the Loma Prieta quake, and multi-unit buildings where three generations of landlords have each added a key to the ring. We’re not an authorized Medeco dealer, and that matters because we’re not pushing a dealership sales goal. We’re pushing original parts and correct work. For service in San Francisco, call (833) 589-8078.
Why San Francisco Residents Choose Us for Medeco Service
Most locksmiths in San Francisco can install a Schlage or a Kwikset. Far fewer can service a Medeco Biaxial cylinder that’s been in continuous use in a rent-controlled apartment building since the Reagan administration. We can, because that’s the work Citadel Locksmith was built around. Our owner, Roland Vásquez, grew up in the Excelsior and hung around his uncle’s hardware shop near Mission Street. He learned early that a seized high-security cylinder teaches you patience and the discipline of using the right pin kit. We service Medeco because we understand the restricted keyway is the whole point. When a tenant loses a Medeco key in a building where every cylinder is part of a master system, you can’t run to a hardware store for a $4 copy. You need a locksmith who understands key-control hierarchy, and that’s the work that spends weeks in our shop. We stock OEM Medeco components and we use them in repairs. No aftermarket shortcuts that leave a keyway with sloppy tolerances.
Styles & brands we work with
Common Medeco Locksmith Problems We Solve in San Francisco
- Fog-induced corrosion on exposed gate and garage cylinders. In the Sunset and the Richmond, the marine layer sits on everything for hours every morning. Medeco Maxum and M3 cylinders installed on alley gates and garage doors seize up when fine corrosion builds inside the sidebar mechanism. It’s the most common Medeco service call we get west of Twin Peaks.
- Keyway wear and binding in multi-unit buildings. Think of a three-story Edwardian near Dolores Park with six units, all sharing one front door. That lock gets cycled a hundred times a day. After enough years, the pins and springs in a Medeco Biaxial cylinder wear and the key feels like it’s grinding against gravel. That’s not a clean-and-spray job. It’s a rebuild.
- Deadbolt misalignment from racked door frames. In hillside neighborhoods like Noe Valley, Bernal Heights, and Potrero Hill, the ground shifts and settles constantly. A Medeco deadbolt that threw perfectly in September can bind hard by January, when winter rains swell the wood and the frame has rotated a few degrees. The lock itself is usually fine. The door it’s mounted in isn’t straight anymore.
- Lost keys inside a restricted system. Losing a Medeco key anywhere is annoying. Losing a Medeco key in a San Francisco building where the front door, garage, laundry room, and individual units all share a master key structure is a genuine security problem. Restricted keyway duplication requires authorization records and specialized cutting equipment, and it’s the kind of job an unqualified locksmith will refuse or, worse, botch.
- Historic mortise locks paired with modern Medeco cylinders. Many pre-war flats and SRO buildings still have their original mortise lock bodies. Someone, at some point, retrofitted a Medeco cylinder into them. The cylinder may be sound, but the old mortise body is a different story. We service the Medeco cylinder and the vintage mortise mechanism together, because in San Francisco you’re rarely dealing with just one.
Medeco Service in San Francisco: What Local Conditions Mean for Your Equipment
Here’s a fact that shapes high-security lock work in San Francisco more than almost anything else: a huge share of the city’s housing stock is pre-1930 wood-frame construction, and those buildings move. They move with rain, with drought, with the slow creep of hillside lots, and with the daily cycle of fog and dry afternoon sun. On a flat lot in Mountain View, a Medeco deadbolt installed on a modern door might go a decade without any frame related trouble. Here, in a Victorian on a sloped street in Bernal where rainwater tracks down the length of the foundation, that hardware is under constant geometric stress. The result is that San Francisco Medeco owners get a specific failure mode you don’t see much elsewhere: the cylinder itself stays strong, but the strike plate shifts, the deadbolt throw starts grinding, and the key gets blamed. Our technicians adjust, shim, and rebuild around the distortion rather than telling you to replace a door your building has had for more than a century. We were called to a Victorian flat in Noe Valley where the Medeco Maxum deadbolt on the shared alley gate had corroded and seized after years of fog and winter rains. Our tech disassembled the lock, cleaned and lubricated the cylinder, and replaced the worn pins with OEM Medeco parts, restoring smooth operation without altering the building’s original hardware. A lock is only as strong as the decision behind it, and sometimes the right decision is repair, not replacement.
Medeco Models & Products We Service in San Francisco
We work on the four Medeco lines San Francisco property owners actually install: the Maxum deadbolt, M3 and M4 cylinders, Biaxial locks, and KeyMark residential locks. Maxum shows up most on street-level gates and garage entries. M3 and M4 cylinders appear in multi-unit master key systems, and Biaxial locks are common in older high-security retrofits, especially where landlords needed restricted key control years before electronic systems were budget-friendly. KeyMark is the residential line we often install when a tenant in a shared building wants meaningful key control without a full building retrofit. For every repair, we use OEM Medeco parts to preserve the integrity of the restricted keyway. We stock a working inventory of Medeco pins, springs, and cylinder components locally, which is the difference between a same-week repair and a multi-week wait on shipped parts. For broader Medeco sales & service across the Bay Area, our shop handles everything from single-cylinder swaps to building-wide keyed-alike systems.
Medeco Service Pricing in San Francisco
What drives Medeco pricing in San Francisco more than anything is the combination of part availability and access time. A standard cylinder rekey on a Schlage in a single-family home is straightforward. A Medeco rekey means original pins, specialized tools, and often a walk-up in a building with no elevator. Here are the ranges you can expect, assuming no hidden structural problems:
- Medeco cylinder rekey (single cylinder): $75 – $150
- Medeco Maxum deadbolt installation (including hardware): $280 – $450
- Medeco M3/M4 cylinder rebuild (worn pins, binding keyway): $110 – $220 per cylinder
- Restricted key duplication (with authorization): $18 – $35 per key, depending on blank cut and keyway
- Service call to a San Francisco address: $45 – $89, rolled into the repair quote, not added on top of a bait price
Every quote we give on the phone is the price on the invoice. We don’t send a tech out with a teaser number. When you call (833) 589-8078, we’ll tell you the line-item cost before anyone gets in the van. That’s how this trade is supposed to work.
Serving San Francisco, CA — Our Local Coverage Area
We’re based in the San Francisco 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 – Medeco Locksmith in San Francisco
Yes. We can rekey a Medeco cylinder without the original key by disassembling the cylinder and decoding the pin stack, then replacing the pins with OEM Medeco components. If the lock is part of a restricted master key system, we’ll need authorization from the property owner or key control authority before cutting new keys. For Car Key Replacement in San Francisco, call (833) 589-8078 and we’ll walk you through what documentation fits your situation.
In San Francisco, winter rains swell the wood doors and jambs in older buildings, and on hillside lots the frame has often racked slightly from ground movement. That means the deadbolt throw is no longer aligned with the strike plate, and you feel it bind every time you turn the key. It’s rarely the Medeco lock itself. We adjust the strike, shim the hinges, or reset the cylinder alignment so the deadbolt throws clean without forcing it. Call (833) 589-8078 for an alignment check before the next storm cycle.
Yes. We design and service Medeco master key systems for San Francisco’s multi-unit buildings, including retrofit systems where existing cylinders are brought into a new key hierarchy. This includes restricted keyways, owner-level key control, and per-unit sub keys. Each system starts with a survey of every door, and you receive a written key schedule before any work begins.
Salt air accelerates the same fine corrosion that fog causes inland, so near the Marina, Dogpatch, and the Embarcadero, exposed Medeco cylinders gunk up faster and the internal sidebar mechanism can bind within a few years rather than a decade. Locks with even a partial weather hood last much longer. We recommend a service clean and lubrication every two years for Medeco locks within sight of the Bay. For an estimate, call (833) 589-8078.
Yes. Many of San Francisco’s Victorians and Edwardians have original doors with non-standard backset dimensions, thin stiles, or ornate escutcheons that can’t simply be drilled for a modern deadbolt. We modify the existing mortise or install reinforcing hardware that preserves the door’s face, rather than boring through century-old wood. A Medeco cylinder can often be retrofitted into the original lock body with no visible alteration.
Service Areas Near San Francisco
Citadel Locksmith serves all of San Francisco, including the Mission District and Chinatown, where Medeco service calls run frequently. Need our crews nearby? You’ll find Medeco service in Mission District and Medeco service in Chinatown pages that cover those neighborhoods in depth. For the wider region, we also take Medeco appointments in Mountain View, Petaluma, and Inverness. Our full San Francisco service area page lists every neighborhood and adjacent city where we operate.
Book Your Medeco Service in San Francisco Today
We’re independent Medeco specialists serving San Francisco, and we answer the phone for our Emergency Locksmith in San Francisco when the gate won’t open or the key won’t turn. Call (833) 589-8078 for a free estimate, read back to you before anyone is dispatched. Same-day service is available across the city.
Written by Roland Vásquez, Owner & Master Locksmith at Citadel Locksmith, serving San Francisco since his first rekey job in the Excelsior.