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 Door Lock Repair Across Cotati
Door lock repair in Cotati is usually a same-day job, though the work itself depends on what’s actually wrong behind the faceplate. We answer the phone with a live person at (910) 714-4287 any hour, tell you exactly who’s coming and when, and hand you a written price before any tool comes out of the truck. Cotati’s mix of aging craftsman bungalows near the old hexagonal downtown and high-turnover Sonoma State rentals means we see a particular pattern of failures here: salt-corroded cylinders, springs that have given out after decades of use, and deadbolts that were never rekeyed between tenants. If your key sticks, turns without catching, or snapped off in the lock, we’ll tell you over the phone what the likely fix is and what it should cost.
Why Dunmore Locksmith Is Cotati’s Preferred Door Lock Repair Company
Cotati homeowners call us because the technician at the door is never a surprise. Every tech is background-checked, identity-verified, and sent to you by name and photo before arrival, wearing a marked uniform and a visible photo ID. That’s the Threshold Standard, and if someone shows up you weren’t told to expect, that visit is covered at no charge. It matters in a town where a lot of people are opening the door alone or with kids at home.
We’ve been doing this under the Threshold Group umbrella since 2007, led by Perry Osgood, who built the operation around a simple promise: written prices, verified people, and work that lasts. Every repair carries the 365-Day Done Right Promise. If the lock fails within a year, we come back and make it right at no charge. No fine print, no arguing.
We know Cotati’s housing stock because we’ve worked in it for years: the William Street cottages with original mortise locks, the Myrtle Avenue rentals with builder-grade Kwikset hardware that’s seen too many copied keys, the newer townhomes off East Cotati Avenue where patio sliders bind after a few wet winters. That local familiarity cuts the diagnostic time in half.
Sliding Door Lock Repair in Cotati
Sliding Door Lock Repair in Cotati most often means a patio door that won’t latch, a handle that spins without engaging, or a lock that’s seized from years of marine air and hard water. Cotati’s rental-heavy west side is full of 1970s and 80s wood-frame units with original sliding-glass doors still using low-grade aluminum mortise locks. Those locks fail in predictable ways: the internal spring breaks, the hook doesn’t drop into the strike, or the cylinder corrodes until the key just spins. We replace or rebuild them on-site, and a typical slider lock replacement in Cotati runs $95 – $185 depending on whether we’re swapping just the lock body or the full handle set.
Repair Versus Replacement on Rental Sliders
Landlords near Sonoma State usually want the cheapest fix that holds until the next lease. We tell them straight: if the slider body is sound but the hook is worn flat, a new lock assembly makes sense. If the track is bowed or the glass is out of square, no lock will hold, and we’ll say so before quoting anything.
Upgrading to a Sturdier Slider Lock
For homeowners planning to stay, we often recommend a zinc or stainless steel lock with a longer throw. That upgrade typically adds $40 – $60 to the job and means the door actually stays latched when the wind off San Pablo Bay pushes against it.
Deadbolt Repair in Cotati
Deadbolt Repair in Cotati is the job we do most, and the reason is almost always the same: the Petaluma Wind Gap. Cool, salt-laden marine air funnels through Cotati year-round, and it settles hard on west-facing doors. The pin-and-tumbler cylinders inside exterior deadbolts corrode from the inside out, keys start sticking, and eventually the key snaps off or the cylinder seizes completely. A straightforward cylinder swap or rebuild in Cotati runs $75 – $140. Replacing the whole deadbolt with a Grade 1 Schlage or Medeco unit runs $130 – $260 installed.
When the Key Won’t Turn at All
That’s usually a seized cylinder, not a broken deadbolt. We drill and pull the old cylinder only when there’s no nondestructive route, then rebuild the lock with fresh pins and a new tailpiece. You keep your door, you keep your deadbolt, and the rusted cylinder goes in the scrap pile.
Rekeying Adds Cheap Security
If you’ve just bought or rented a place in Cotati and don’t know who still has keys, we rekey the deadbolt and matching knob in one visit. Rekeying in Cotati runs $65 – $110 per lock, and there’s no reason to wait. Old keys that still turn your lock are a real risk here, especially with SSU turnover putting dozens of keys in circulation per rental unit.
Trusted Brands We Service in Cotati
We work on Schlage, Kwikset, Medeco, and Yale hardware every week in Cotati, and we keep the common replacement parts for those brands stocked on the truck. That means we can rebuild a Schlage B60 deadbolt or swap a Kwikset cylinder the same day without waiting on a parts run. For older homes with mortise locks, we source compatible Schlage and Yale bodies or retrofit a modern deadbolt above the existing mortise when repair isn’t practical. If your hardware is under factory warranty, we handle the service authorizations too. Perry Osgood’s team is factory-authorized on all four brands, so the repair doesn’t void the original warranty.
Common Door Lock Repair Problems We See in Cotati Homes
- Salt-corroded pin-and-tumbler cylinders on west-facing doors. The Petaluma Wind Gap pushes marine air over Cotati year-round, and it attacks brass and steel hardware far faster than people expect. A deadbolt that worked fine in May can be sticky by October.
- Pitted strike plates and hinge screws. Same coastal moisture, different symptom. The strike plate on an exterior door rusts, the latch stops aligning, and suddenly the door won’t close without shoulder-checking it.
- Deadbolts never rekeyed through multiple SSU tenant turnovers. We routinely pull cylinders here that are packed with broken pins and years of metal shavings from copied keys. The landlord thought the lock was fine; it was one turn from failure.
- Vintage mortise locks on downtown Craftsman bungalows. The hexagonal downtown grid and the streets around it hold Cotati’s oldest housing stock, with interior mortise locks that haven’t been lubricated or serviced in decades. We rebuild them when parts exist, and we’re honest when they don’t.
Pricing for Door Lock Repair in Cotati, CA
Here’s what you can expect in Cotati, in real numbers. A standard deadbolt cylinder repair runs $75 – $140. Rekeying a single knob or deadbolt runs $65 – $110. A full deadbolt replacement with a Grade 1 Schlage runs $130 – $260 installed. Sliding door lock replacement runs $95 – $185. The price gets quoted in writing before we touch anything, and the quote is the invoice total. We don’t tack on a call-out surcharge when the tech arrives, and we don’t bait you with a cheap teaser number. Call (910) 714-4287 and describe the problem; we’ll give you a range over the phone and a fixed written price before any work starts.
We Also Serve Cities Near Cotati
If you’re in Rohnert Park, Petaluma, Santa Rosa, or Sebastopol, you’re within our regular service loop and get the same written-price guarantee and same-day scheduling priority. For full details on what we do and where, see Door Lock Repair and Door Lock Repair in Cotati.
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 About Door Lock Repair in Cotati
Yes, almost always in Cotati. The persistent marine air through the Petaluma Wind Gap carries salt that settles inside exterior lock cylinders, causing brass pins and springs to corrode and bind. We pull the cylinder, clean or replace the pins, and re-lubricate with a corrosion-inhibiting product. If the housing is too far gone, we swap in a marine-grade cylinder. Call (910) 714-4287 and we’ll tell you over the phone whether it sounds like a lubricant fix or a full cylinder replacement.
Yes, and we do it routinely. The lock on a sliding patio door is a self-contained assembly that swaps out without touching the glass or frame. In Cotati we see these fail constantly on 1970s and 80s rentals where the original aluminum lock has finally given out. A typical slider lock replacement runs $95 – $185, and the door stays exactly where it is. Call (910) 714-4287 with the door’s brand if you know it; we’ll bring the right part.
Get it rekeyed before you move anything valuable in. Cotati’s rental turnover near SSU is constant, and we frequently find deadbolts that haven’t been rekeyed through three or four tenant changes. That means multiple old keys are out there, and the landlord usually has no idea who holds them. Rekeying a deadbolt and matching knob in Cotati runs $65 – $110 per lock, and we do it same-day. Call (910) 714-4287 and schedule it before the first night in the house.
Yes, whenever the lock allows it. We use bypass tools and picking techniques before we ever pick up a drill. Most residential locks in Cotati can be opened without damage in under 15 minutes by a trained tech. If drilling becomes necessary because the lock is broken beyond repair, you’ll know before we do it and the replacement cost is included in the upfront written quote. Call (910) 714-4287 any hour.
Often, yes. The craftsman bungalows around Cotati’s hexagonal downtown grid still have original or early mortise locks in their front doors, and those bodies are rebuildable if the cast iron isn’t cracked. We disassemble, clean, replace worn springs and levers, and re-lubricate. If the body is beyond saving, we’ll show you what’s broken and switch to a modern deadbolt installed above the mortise, preserving the door’s original hardware as a latch. Call (910) 714-4287 and describe the lock; we’ll bring the right rebuild kit.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Cotati since 2007.