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Get your free estimateMedeco Locksmith in Cotati, CA | Cypress Lock & Key
Need Cotati Emergency Locksmith service for Medeco? We service, rekey, and rebuild Medeco high-security locks across the 94931 ZIP code, including retrofit work on the original mortise locks still common in Cotati’s older ranch homes. The difference here: most Cotati Medeco work starts with a frozen 1950s – 60s mortise body, not a clean new deadbolt install. Call (877) 265-4385 and we’ll walk you through exactly what’s wrong before anyone gets in a truck.
Medeco locks earn their reputation for a reason. Restricted keyways, hardened pins, and tight manufacturing tolerances mean someone can’t walk into a hardware store and get a duplicate cut. That’s the selling point, and it matters in Cotati, where older homes and small commercial storefronts often sit quiet during the workday. But those same locks live inside doors and frames that have been settling, swelling, and drying out for fifty to seventy years. We don’t just know Medeco cylinders. We know how Cotati’s housing stock treats them.
Why Cotati Residents Choose Us for Medeco Service
Most locksmiths in Sonoma County can swap a Schlage or Kwikset without breaking a sweat. Medeco is a different animal. The tolerances are tighter, the key control is real, and the wrong pin kit turns a $40 service call into a cylinder replacement you didn’t need. We stock Medeco pinning kits, restricted key blanks, and replacement cylinders, and we’ve been working on these locks across Sonoma County’s older housing stock for years. When a Cotati homeowner calls about a Medeco lock, we already know what the lock is doing before we pull into the driveway.
Noel Carver, our owner and lead locksmith, finished a locksmithing and security systems program at Fresno City College and has been running calls in this part of Northern California for close to two decades. His background includes everything from basic pin-tumbler service to automotive transponder work, but the Medeco service calls are the ones where experience pays off fastest. You want someone who’s seen a Biaxial cylinder bind inside a 1962 mortise body more than once. That’s us.
We’re an Medeco sales & service shop in the practical sense: we service the hardware honestly and independently. No manufacturer authorization implied or claimed. If the cylinder can be rebuilt, we rebuild it. If it can’t, we tell you that too.
Styles & brands we work with







Common Medeco Locksmith Problems We Solve in Cotati
- Seasonal deadbolt binding from shifting door frames. Cotati’s wet winters swell the original 1950s – 70s wood doors, and a Medeco Maxum bolt that threw cleanly in November can seize against a shifted strike plate by February. The restricted cylinder itself is usually fine. The frame moved. We reset the strike and re-align the bolt throw.
- Frozen thumb-turns in vintage mortise bodies. In the older neighborhoods around downtown Cotati, many front doors still carry original 1950s – 60s mortise locks with skeleton-style keys. The interior thumb-turn is often frozen solid from decades of disuse. A Medeco retrofit cylinder can’t throw cleanly until that mortise body is freed, cleaned, and re-machined.
- Worn original keyways rejecting modern restricted keys. Decades-old brass and steel hardware around Medeco cylinders corrodes and binds. We regularly see Cotati homes where the original keyway has worn enough that a modern M3 or M4 restricted key won’t seat. The fix is a cylinder rebuild or replacement, not a new lock body.
- Summer dryness shrinking frames and misaligning strikes. Cotati’s dry summers pull moisture out of door frames. Frames shrink, strikes misalign, and hardware that turned fine in spring binds by August. Medeco deadbolts aren’t forgiving of misalignment. We re-shim strikes and adjust bolt paths for the seasonal movement.
- Landlords needing rental key control after tenant turnover. Medeco restricted keyways mean former tenants can’t have duplicates cut at the hardware store. That’s exactly why landlords in Cotati choose them. We rekey and issue controlled keys between tenants, and we can key a building so every unit opens on separate keys while the manager’s key works them all.
Medeco Service in Cotati: What Local Conditions Mean for Your Equipment
Here’s something you won’t read on a generic Medeco service page. Many front doors in Cotati’s older downtown neighborhoods still carry original 1950s – 60s mortise locks with skeleton-style keys, and the interior thumb-turn is frequently frozen solid from decades of disuse. This repair pattern essentially never turns up in Sonoma County’s newer subdivisions, where everything is cylindrical hardware from the last thirty years. Medeco retrofits in Cotati almost always start with freeing and re-machining that vintage mortise body before a restricted cylinder can be fitted. The door prep exists, the lock body is salvageable most of the time, but the thumb-turn mechanism needs real work before a high-security cylinder will throw cleanly. A shop that only does surface swaps will tell you to replace the whole thing. We don’t. The original mortise body in a 1960s Cotati ranch home is often better-built than anything you’d buy off a shelf today, and we’d rather rescue it.
On a ranch home off a downtown Cotati side street, we were called for Penngrove Medeco service to a front door that wouldn’t latch. The original mortise lock still held its skeleton-key era case, but the thumb-turn had frozen solid over decades and a prior Medeco deadbolt above had been fighting a shifted strike. We freed and cleaned the mortise body, re-fit a Medeco high-security cylinder to the existing prep, reset the strike for the shrunken summer frame, and left the homeowner with one restricted key working the deadbolt and a smooth-turning vintage thumb-turn. That’s what Medeco service in Cotati actually looks like.
Medeco Models & Products We Service in Cotati
We work on the full Medeco lineup you’re likely to find in Cotati homes and storefronts. The Medeco Maxum deadbolt is the most common high-security deadbolt we service here, and we stock the cylinders, tailpieces, and strike reinforcement parts that keep them running. The older Biaxial cylinder still turns up in buildings that were upgraded decades ago, and we re-pin and rebuild those regularly. Current Medeco M3 and M4 restricted-keyway cylinders are our most frequent new-install and retrofit request. We also fit Medeco deadbolt retrofit cylinders into legacy mortise bodies, which is the standard job on Cotati’s ranch and bungalow homes.
On parts: we use genuine Medeco cylinders and pins wherever the keyway profile requires it. Restricted key control only works if the cylinder is real Medeco, and we won’t fake that with aftermarket internals. For the surrounding deadbolt bodies, strikes, and reinforcement plates that don’t touch the restricted key control, quality aftermarket hardware does the job. If a Medeco cylinder can be rebuilt or re-pinned honestly, we do that rather than pushing a full replacement. Vintage mortise bodies in Cotati often aren’t worth swapping wholesale.
Know your hardware, know your options – the rest is just turning a key.
Medeco Service Pricing in Cotati
Medeco service in Cotati runs differently depending on what the lock needs. A standard rekey of an existing Medeco cylinder, including new restricted keys, typically costs more than a conventional cylinder rekey because the key blanks and pinning are controlled. That’s the trade-off for real key control. Rebuilding a Medeco Maxum deadbolt with new pins and springs usually lands in a similar range. Full cylinder replacement is the higher end, especially when the keyway is M3 or M4 restricted and the cylinder has to be ordered from the distributor.
| Service | Typical Range in Cotati |
|---|---|
| Medeco cylinder rekey (includes restricted keys) | $60 – $120 per cylinder |
| Medeco Maxum deadbolt rebuild or re-pin | $80 – $160 |
| Medeco M3 / M4 cylinder replacement | $150 – $300 per cylinder |
| Mortise body freeing + Medeco retrofit cylinder | $120 – $250 depending on body condition |
| Strike reset / seasonal alignment | $45 – $90 |
We quote the full price on the phone before anyone is dispatched, and that’s the price on the invoice. No call-out surcharge added when we arrive. Call (877) 265-4385 for a free estimate on your specific Medeco hardware. We’ll tell you what it needs and what it’ll cost before you commit to anything.
Serving Cotati, CA — Our Local Coverage Area
We’re based in the Cotati 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 Cotati
Yes, in most cases. The original mortise body usually has enough room to accept a Medeco retrofit cylinder, but only after the body is freed and re-machined. The frozen thumb-turn we described is the first thing we address, because a Medeco cylinder won’t throw cleanly through a seized mortise mechanism. Some severely corroded bodies do need replacement. Most don’t. Call (877) 265-4385 and describe your door; we’ll tell you honestly which way it’ll go.
Your door frame is soaking up winter moisture and swelling, which shifts the strike plate just enough to bind the bolt. The Medeco cylinder itself is rarely the problem. Cotati’s wet-winter/dry-summer pattern makes this a seasonal rhythm here: swollen frames in January, shrunken frames in August. We reset strikes and adjust bolt paths so the deadbolt throws cleanly year-round. Call (877) 265-4385 to schedule a seasonal adjustment.
In most Cotati commercial buildings, yes. The existing mortise body can often accept a Medeco retrofit cylinder, which means your storefront and your high-security deadbolts can all work from one restricted key. This is a common request from downtown Cotati business owners who want one key for everything without re-hardwaring the whole entrance. We’ll inspect the mortise body and tell you whether a retrofit is viable before any work starts.
If you’ve ever wondered how many copies of your rental key are floating around town, yes. A Medeco restricted keyway means nobody can walk into a hardware store and duplicate a key. When a tenant moves out, we rekey the cylinder and issue new restricted keys. The old keys become useless. For Cotati landlords with units turning over regularly, that’s real security value. Call (877) 265-4385 and we’ll quote a per-unit rekey rate for your property.
Don’t panic. If you have no key at all, the cylinder has to be picked, drilled, or removed and replaced depending on what it’s installed in. We can do that. You’ll get new restricted keys, and if you want to keep the same keyway, we can re-pin rather than replace the cylinder. The cost depends on whether the mortise body survives the process. Most do. Call (877) 265-4385 as soon as you realize the key is gone, and we’ll get you back in.
Service Areas Near Cotati
We run Medeco service calls across Cotati and the surrounding Sonoma County and North Bay corridors. That includes Cotati service area coverage throughout 94931, plus Medeco service in Rohnert Park for condo and apartment complexes, and Medeco service in Kenwood for the ranch properties and estate homes in that area. If you’re within reasonable driving distance of Cotati, we can usually get to your door the same week, often sooner.
Book Your Medeco Service in Cotati Today
Whether you need Medeco repair in Petaluma or here in Cotati — deadbolt binding, restricted key lost, or retrofit cylinder fitted to an original mortise lock — call (877) 265-4385. We quote the full price before dispatch, and we’ll tell you what your lock actually needs. No drama, no upsell pressure.
Written by Noel Carver, Owner at Cypress Lock & Key, serving Cotati and Sonoma County.