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 Los Altos
Door lock repair in Los Altos typically costs between $95 and $380 depending on what’s wrong, and most jobs are completed the same day we’re called. We work on houses off Foothill Expressway, up in the hills near Purissima, and on the wide acreage lots around Loyola Corners where a single property often has three or four locks that all need attention. Los Altos is different from the rest of the Valley. The soil here doesn’t just sit still. It dries, it contracts, and it slowly pulls door frames out of square on older slab foundations. That means a deadbolt that worked fine in April starts binding in September, and the fix usually has nothing to do with the lock itself. We know the difference. Call (910) 714-4287 and you’ll reach a live person who can tell you what to expect before anyone gets in the truck.
Why Dunmore Locksmith Is Los Altos’s Preferred Door Lock Repair Company
Los Altos homeowners call us because we show up with a name and a face. Our technicians are background-checked, identity-verified, photo-badged, and sent to you by name and photo before the visit. Ask anyone who has had a stranger at their door after a lock failure and they’ll tell you that part matters more than the repair itself. We’ve been doing this since 2007 under the Threshold Group umbrella, and every job carries the 365-Day Done Right Promise in writing. If the repair fails within a year, we return at no charge. Not a pro-rated visit, not a service call fee. Zero.
We are a member of Door Lock Repair professionals serving the whole Bay Area, but the Los Altos calls have a rhythm of their own. Tuesday mornings are often keypad programming for housekeepers. Friday afternoons, someone coming home after a week of travel finds a deadbolt that won’t turn. We’ve run calls from the Country Club area down to the newer builds off El Monte Road, and the pattern holds: Los Altos residents want the work done correctly the first time, with a price in writing before anyone starts drilling. That’s the Threshold Standard. It is how we operate, every single job.
Deadbolt Repair in Los Altos
Deadbolt Repair on slab-foundation homes across Los Altos is rarely about the cylinder. It is about the frame. The dry season pulls moisture from the ground, the slab settles a fraction of an inch, and the bolt no longer lines up with the strike plate. Homeowners feel the resistance and assume the lock is failing. Most of the time, the lock is fine. The house moved. We adjust the strike plate, realign the bolt path, and the deadbolt throws clean again. A standard single-cylinder deadbolt repair in Los Altos runs $95 – $180. If the internal pins are worn and the key sticks, we rekey the cylinder on-site for $85 – $160 per lock.
When the cylinder itself is the problem
Original 1950s – 1970s pin-and-tumbler cylinders on ranch homes wear out internally. Keys stick halfway, then eventually break off. We see this most often on homes where three or four keys are in circulation across the house, workshop, and gate. The more keys, the more wear. We replace the cylinder or rekey it to fresh pins, and we can cut a master key system so the house, shop, and gate each have their own dedicated key while one key opens everything.
Slab shift across multiple structures
On larger Los Altos properties, the house and the detached garage or pool house sit on separate slabs. They settle at different rates. A deadbolt on the front door works fine while the back patio deadbolt jams. That is not a coincidence. That is independent slab movement. We send one technician to adjust every deadbolt on the property in a single visit, because the labor is in the travel and the diagnosis, not in the adjustment itself.
Patio Door Lock Repair in Los Altos
Patio Door Lock Repair in Los Altos usually means one of two things: the sliding door latch no longer engages, or the door has sagged enough that the lock tongue sits below the keeper. Los Altos homes built in the 1960s and 1970s used aluminum patio frames that flex under repeated heat cycles, and the teardown rebuilds with builder-grade vinyl frames are not immune either. We repair the latch mechanism, adjust the keeper, and if you want, we can add a positive-locking foot bolt that engages into the track for when you leave town. Typical patio door lock repair runs $110 – $240 in Los Altos.
Non-destructive entry for stuck patio doors
If a patio door lock has failed and the door cannot be opened from outside, our technicians use non-destructive entry techniques to get it open without cutting or drilling. This matters on custom doors where replacement glass costs more than the service call. We then replace the failed latch or lock body so the door works in both directions.
Adding a secondary lock for travel
Los Altos homeowners are on planes more than most. If you travel frequently or maintain the property as an investment, a secondary patio door lock is the cheapest security upgrade you can make. We install aftermarket surface bolts and loop locks that run $45 – $95 installed, and we key them to match the rest of the house where that hardware allows.
Trusted Brands We Service in Los Altos
We stock parts for Schlage, Kwikset, and Yale hardware on the trucks that run Los Altos calls, which means we can usually repair a lock in one visit rather than ordering parts and coming back. That matters when you have a housekeeper or contractor arriving the next morning and an access code that doesn’t work. We are factory-authorized on Schlage Encode and Yale Assure locks, so issues with Bluetooth pairing or Z-Wave enrollment after a power outage are handled as repairs, not replacements. If the problem is a Medeco high-security cylinder, we handle that too, including rekeying and card registration.
Common Door Lock Repair Problems We See in Los Altos Homes
- Dry-season slab shift binding deadbolts on outbuildings. Why do my deadbolts stick? Houses, detached workshops, and gates sit on separate slabs that settle independently when the soil dries out. One property commonly needs three or four separate deadbolt adjustments in a single visit. The lock is rarely the problem.
- Smart locks losing Z-Wave or Zigbee pairing after outages. Builder-grade electronic locks on new teardown-rebuilds in Los Altos frequently drop their network pairing after a power cycle. The keypad goes dead, the app shows offline, and no amount of battery swapping fixes it. We reprogram and re-enroll the lock, then test it with your home automation hub.
- Worn pin-and-tumbler cylinders on original 1950s – 1970s ranch hardware. Multiple keys across house, workshop, and gate accelerate internal pin wear. Keys stick harder each month until one finally breaks off in the cylinder. We extract broken keys, replace or rekey the cylinder, and often re-pin the whole set to a single key as part of the same call.
- Misaligned sliding patio door latches after frame flex. Aluminum patio frames from the 1960s and 1970s expand and contract through Los Altos temperature swings. The latch tongue settles just below the keeper, and the door locks only if you lift it while turning. We realign and replace the keeper, and often add a foot bolt for actual security.
Pricing for Door Lock Repair in Los Altos, CA
Straightforward numbers. Deadbolt repair on a house entry runs $95 – $180. Patio door lock repair runs $110 – $240. Cylinder replacement or rekeying runs $85 – $160 per lock. Service call, labor, and parts are quoted in writing before we begin. If your property has a workshop, pool gate, and main house that were all moving with the soil, we give you a line-item price per door, so you can say yes or no to each one. We’ve done Los Altos calls where one deadbolt adjustment fixed everything, and calls where four doors needed strike plates moved. The price you see on the invoice is the price we quoted on the phone. No dispatch fee appears on arrival, no surprise line items at the end. Call (910) 714-4287 and describe the problem; we’ll give you a working range and honor it.
We Also Serve Cities Near Los Altos
While this page is focused on Los Altos, our technicians regularly run calls across the same afternoon to Mountain View, Stanford, Palo Alto, and Portola Valley. The soil conditions, housing stock, and lock systems vary from city to city, but our response standards and pricing discipline remain the same. If you’re just over the border, call us anyway. We’ll tell you which team is closest and the honest wait time with the live person who answers the phone.
Serving Los Altos, CA - Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos
Because the lock isn’t the problem. The soil under your slab foundation dries and contracts during the Santa Clara Valley dry season, settling the foundation enough to shift the door frame out of square with the strike plate. Lubrication helps sticky cylinders, but it does nothing for misalignment. We adjust the strike plate and realign the bolt path so the deadbolt throws instead of dragging. Call (910) 714-4287 and ask for a slab-shift deadbolt inspection. A typical adjustment in Los Altos runs $95 – $180, and if the cylinder is also worn, we’ll tell you that separately before doing anything.
Yes. We service outbuildings, pool gates, driveway gates, and detached garages all over Los Altos. These locks are often strapped to their own separate slab that settles independently of the house, so the fix is not just about the cylinder. We adjust the alignment and repair or rekey the lock in one visit. We also carry gate-specific hardware, including ANSI Grade 1 mortise locks and heavy-duty gate latches on our trucks. If you can tell us the type of gate and what the lock is doing when you call, we’ll bring the right kit the first time.
Yes. Los Altos teardown-rebuilds often ship with builder-grade electronic locks that drop their Z-Wave, Zigbee, or Wi-Fi pairing after a power interruption. The keypad goes dead and the app can’t reach it. We factory-reset the lock, re-enroll it on your network, and confirm that the keypad codes, schedules, and remote functions all work. If you’re running Schlage Encode or Yale Assure, we handle the reprogramming the same day. We’ll also check the firmware and show you what we did. If you need temp codes for a housekeeper, contractor, or house-sitter, we’ll program those before we leave.
Yes, and we prefer it. On custom Los Altos patio doors, replacing the glass costs far more than a patient technician. We use non-destructive entry techniques to open the door without cutting or drilling, then repair or replace the failed latch. A typical Los Altos patio door lock repair runs $110 – $240. On older aluminum frames that have sagged, we often replace the keeper with an adjustable version and add a foot bolt if you’d like positive locking. You’ll get a written price before we open the door, so you don’t discover the cost after the lock is in pieces.
We rekey all cylinders on the property to match a single key, and we can add a master key system if you want the house, workshop, and gate opened by different keys while you carry only one. This is a standard request on larger Los Altos lots where a homeowner has several outbuildings. Tell us how many doors and gates you have when you call, and we’ll quote a per-cylinder price before dispatching. We bring the key blanks, pin kits, and a key-cutting machine, so it’s all finished the same day. Most properties in Los Altos are entirely keyed alike in under two hours once we’re on site.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Los Altos as part of the Threshold Group since 2007.