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 Sunnyvale
Door lock repair in Sunnyvale typically runs $85 – $220 for most common jobs, and we can usually have a technician at your door within 45 – 60 minutes of your call. If you live in Sunnyvale and your deadbolt is stiff, your smart lock won’t respond, or a key broke off in the cylinder, you want someone who knows this city’s specific housing stock and can fix it without selling you hardware you don’t need. That’s what we do. Call (910) 714-4287 and a live person answers, any hour, every day.
Sunnyvale isn’t like neighboring cities. The mix of 1950s ranch homes in Lakewood and Cherry Chase, 2010s condos near the Caltrain station, and corporate campuses along Mathilda Avenue means a locksmith here has to be fluent in corroded mid-century Kwikset cylinders, modern access controllers, and everything in between. Our crews work Sunnyvale daily. We know which doors on which streets fog in from the bay and which smart lock retrofits actually hold alignment. That local knowledge changes how fast the repair gets done right.
Why Dunmore Locksmith Is Sunnyvale’s Preferred Door Lock Repair Company
We’re part of the Threshold Group network, which has backed independent local locksmith businesses since 2007. Every technician we send to Sunnyvale has passed a background check and identity verification. Before the visit, you get the technician’s name and photo. At your door, they show a photo ID badge before you open it. If someone arrives who you weren’t told to expect, that visit is covered at no charge. That’s the Threshold Standard, and it matters most exactly when you’re about to let a stranger into your home.
Sunnyvale homeowners put us on their preferred list for a reason. The 365-Day Done Right Promise is written on every invoice: if the repair fails within a full year, we come back and fix it at no charge. Prices go in writing before any work starts, so the number you agree to is the number you pay. And when you call at 2 a.m. with a lock that just failed, you get a live person on the phone, not a voicemail. Perry Osgood, who leads the team, has built the Sunnyvale operation around one idea: you should know exactly who is coming to your door before you turn the handle.
Our dispatchers coordinate from the San Francisco Bay Area office and route Sunnyvale jobs to the nearest available technician, so response times stay tight across the city, from Borregas down to the Wolfe Road corridor. We carry the cylinders, pins, springs, and replacement parts for the brands Sunnyvale homes actually use, which means fewer return trips and fewer “we’ll order that and come back” delays.
Broken Key Extractor in Sunnyvale
Broken key extractor is the tool we use when a key snaps off inside a lock cylinder, and in Sunnyvale this usually happens on north- and west-facing doors where bay fog has been feeding corrosion into the cylinder for a decade. The key was already fighting the plug, the owner gave it one hard turn, and the blade sheared. We remove the broken key fragment without pulling the whole lock, then we assess whether the cylinder is worth repairing or should be rekeyed onto fresh pins. A broken key extraction in Sunnyvale typically runs $65 – $120, and if the cylinder itself is too far gone, a rekey typically adds $45 – $95 on the same visit.
Corrosion Damage in Older Sunnyvale Cylinders
On a 50-year-old ranch home in Lakewood or Cherry Chase, the keyway itself may be so pitted that even a clean extraction won’t make the lock turn smoothly. We’ll show you what the extracted key looks like and what the cylinder walls show. If the plug has deep pitting, the honest fix is new pins and springs, not forcing a failing cylinder to keep working.
What to Do When a Key Breaks
Don’t force another key in behind the broken blade. That pushes the fragment deeper and can damage the spring stack. Don’t glue anything into the keyway either. Call us and describe what happened; we’ll tell you what to expect and give you a written price before anyone is dispatched, with no call-out surcharge added on arrival.
Sliding Door Lock Repair in Sunnyvale
Sliding door lock repair in Sunnyvale covers the latch mechanisms, handles, and foot locks on patio and balcony doors, and it’s a service we run constantly in this city because so many homes, from older ranch houses to newer condo units, open onto a back patio or balcony where the hardware gets ignored until it stops latching. A sliding door lock repair in Sunnyvale typically runs $90 – $180 depending on whether we’re replacing a worn latch, rebuilding a handle mechanism, or adding a secondary lock to a door that never latched from day one.
Worn Latch and Handle Mechanisms
The latch on a heavily used patio slider wears down until it no longer seats into the strike. The door looks closed but isn’t secured. On Sunnyvale’s ground-floor condos near the downtown Caltrain station, that’s a real security gap. We replace the latch assembly, adjust the strike alignment, and verify the door actually resists opening.
Adding Secondary Locks to Sliders
Many mid-century Sunnyvale sliders were built with a single flimsy latch and no better option. We install secondary locks, including foot bolts and auxiliary pin locks, that don’t require drilling into the glass frame. For a rental or a condo with an HOA, we can recommend a non-invasive option that keeps the door secure without modifying the track.
Trusted Brands We Service in Sunnyvale
We’re factory-authorized to work on the brands Sunnyvale homes and offices actually carry: Schlage, Kwikset, Yale, and others. Most of our Sunnyvale trucks stock common Schlage and Kwikset cylinders, pins, springs, and strike plates, so a standard repair doesn’t wait on a parts order. For a Yale smart lock or a Schlage Encode that won’t play nicely with HomeKit or Google Home, we troubleshoot the lock, the hub, and the door alignment together, because one visit has to fix the whole system, not just the hardware.
Common Door Lock Repair Problems We See in Sunnyvale Homes
- Salty bay air corrosion on north- and west-facing exterior cylinders. The marine layer that rolls in from the northwest keeps those lock bodies damp, and after years of that, the cylinder stiffens until a key snaps. This is one of the most common calls we get in Borregas and the older neighborhoods along Remington Drive.
- Builder-grade deadbolts reaching the end of their service life. The original hardware on 1950s and 1960s tract homes often survives 50 to 70 years, but the pin stacks wear until the shear line shifts. The lock works one day and locks you out the next.
- Smart lock retrofits that fit the door but don’t align with the strike. An August or Schlage Encode bolts onto the interior thumbturn, but if the new bolt doesn’t seat cleanly into the old strike plate, the motor grinds and the HomeKit status reports a jam. The lock isn’t broken; the door prep is wrong.
- Builder’s keys still operating a newly purchased home. In Sunnyvale’s newer master-planned communities and the condo towers near downtown, builders often hand over homes with a construction key still active. Until the lock is rekeyed, an unknown number of contractor keys could open the front door. Rekeying is the fastest way to close that gap.
Pricing for Door Lock Repair in Sunnyvale, CA
Standard door lock repair in Sunnyvale runs $85 – $220 for most residential jobs. A broken key extraction is $65 – $120. Rekeying a standard knob or deadbolt runs $45 – $95 per cylinder, which means a typical three-lock home can be rekeyed for roughly $135 – $285. Sliding door lock repair runs $90 – $180. What changes the number is what we find inside the lock: a corroded cylinder that needs new pins costs more than a simple latch adjustment. You’ll get a written quote before any work starts, and the price on that quote is the price on the invoice. Call (910) 714-4287 for an exact quote; estimates are free and there’s no call-out surcharge.
We Also Serve Cities Near Sunnyvale
Our Door Lock Repair team covers Sunnyvale and the surrounding area every day. If you’re in Mountain View, Santa Clara, Cupertino, or Los Altos, we can usually route a technician to you just as quickly. Door Lock Repair in Sunnyvale is our core route, but the crews know these neighboring cities well and stock the same parts.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
In most cases we can repair it. The original deadbolts on 1960s Sunnyvale tract homes are usually brass or zinc-bodied units with worn pin and tumbler stacks, and replacing the pins and springs restores a smooth, reliable key turn. It’s cheaper than a new lock and keeps the original finish matched to the door. If the cylinder body itself is cracked or the bolt is bent, replacement makes more sense. We’ll give you a written price for both options before any work starts. Call (910) 714-4287 to schedule.
Rekey the lock immediately. Builders and contractors often use a single construction key across multiple units, and until the cylinder is rekeyed, you have no way of knowing who else holds a working key to your front door. We can rekey a standard deadbolt in about 20 minutes, usually for $45 – $95, and you’ll get a new set of keys that are the only ones that work. If the condo uses an electronic fob or keypad system, we can also help reprogram the credential. Call (910) 714-4287 and we’ll walk you through what’s involved.
It’s often both working against each other. The August lock bolts onto the existing deadbolt, so if the underlying cylinder is stiff from bay fog corrosion, the motor has to work harder, which drains the battery faster and drops the HomeKit pairing. If the bolt also doesn’t align cleanly with the strike plate, the lock reports a jam and HomeKit drops the command as failed. We open the cylinder, clean or replace the pins, check alignment, and re-pair the lock to your HomeKit hub. For many Sunnyvale condos and ranch homes, that’s a single visit. Call (910) 714-4287 and describe what the lock is doing, and we’ll tell you what the most likely cause is before we arrive.
Yes, in most cases. We use spiral and hook extractors that slide into the keyway alongside the broken blade and pull it out without drilling or damaging the pins. If the key broke because the cylinder was already seized, we may recommend cleaning and re-pinning the cylinder after extraction so it doesn’t happen again. The extraction is usually $65 – $120. If the cylinder turns out to be worn beyond repair, we’ll show you and give you a written price for the rekey before proceeding. Call (910) 714-4287 for a free estimate.
We repair and replace sliding door locks all over Sunnyvale, from the patio sliders on Lakewood ranch homes to the balcony doors on downtown condos. The work includes latch replacement, handle mechanism rebuilds, strike plate realignment, and adding secondary locks like foot bolts or auxiliary pin locks where the original hardware is weak. Typical sliding door lock repair in Sunnyvale runs $90 – $180. Call (910) 714-4287 and we’ll quote your exact door over the phone.
If your door lock is stiff, broken, or just not keeping you secure, call (910) 714-4287 now. A live person answers, the quote goes in writing, and the technician who arrives is someone you already know by name and face.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Sunnyvale as part of the Threshold Group network.