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 Change Door Locks Across Atherton
Changing door locks in Atherton is rarely a quick deadbolt swap. Most estates here have multiple detached structures, motorized gates, and custom hardware that need a different approach than a standard Peninsula lock change. A typical Atherton lock change runs $95 – $310 per lock depending on whether it’s a simple knob or deadbolt replacement, a mortise retrofit, or a high-security cylinder keyed into an existing master system. We coordinate dispatch from our San Francisco Bay Area office and serve Atherton locally with same-day scheduling on most residential calls. Call (910) 714-4287 and a live person answers. That’s not a callback line. It’s us.
Why Dunmore Locksmith Is Atherton’s Preferred Change Door Locks Company
We’ve handled lock changes in Atherton for properties where the front door alone costs more than a car. The work here is different because the expectation is different. Homeowners off Atherton Avenue, Selby Lane, and in the Lindenwood neighborhood don’t want to hear that a standard Kwikset will do. They want to know exactly who is coming to the property, what hardware they’re installing, and whether the new key will work with the guest house, pool house, and motor court gate. So we answer those questions before the visit, in writing.
Every technician is background-checked and identity-verified under the Threshold Standard. We send you the technician’s name and photo before the visit. When the van pulls up the long driveway, the person at your door is the person you were told to expect, wearing a photo ID badge and a clean marked uniform. If someone shows up who you weren’t told about, that visit is on us at no charge.
Our 365-Day Done Right Promise covers every lock change in writing. If the repair fails within a year, we return at no charge. Not a vague satisfaction pledge. A written guarantee stamped on the job. Perry Osgood, who leads Dunmore Locksmith, insists on that because the name Dunmore comes from old words for a great fort: a stronghold built to keep what is inside safe. That’s the standard we bring to Atherton.
Door Lock Installation in Atherton
Door lock installation in Atherton usually means replacing hardware on a tall, solid-core entry door built for something stronger than what the chain stores sell. A standard single-cylinder deadbolt installation runs $95 – $155. A mortise-type lock on an older home starts around $190 and goes up with high-security cylinderwork. Read on for what that actually involves here.
When a standard deadbolt isn’t enough
Many Atherton homes from the 1920s through the 1950s still have original mortise lock bodies in the door. Swapping in a big-box cylindrical deadbolt leaves the top and bottom shoot bolts unsecured and looks wrong on a carved entry. We carry mortise retrofit hardware and can machine the door properly so the new lock actually engages the full locking mechanism, not just the center latch.
Keying new locks into an existing master system
If your main house, guest house, and pool house already work on one master key, we verify the existing pinning chart before cutting anything. Skip that step and one door silently drops out of the master. A change door locks job in Atherton is often really a key-control job: you should know exactly how many working keys exist for your property, and be able to prove it.
Patio Door Lock Change in Atherton
Patio door lock change in Atherton comes up a lot on estate properties where the rear of the house opens onto acres of landscaped grounds. A standard patio door lock replacement runs $85 – $145. Add a high-security cylinder or integrate with an existing alarm and the range moves to $150 – $240 per door. Think of it as one more opening in a securable perimeter, not a secondary door.
Multi-point locking and alarm integration
Tall patio doors on Atherton builds, especially post-2000 custom houses, often have multi-point locking at the top, bottom, and center. We check that the new lock body throws all the shoot bolts when the door closes. If the door already talks to an alarm or smart-home platform, we confirm the new hardware doesn’t trip a tamper or leave the door reporting open when it isn’t.
Weather-rated cylinders for exposed doors
The marine layer off the Bay means anything facing the garden or the pool house collects moisture year-round. An unpainted cylinder on a patio door can seize within a season. We install weather-rated cylinders with proper lubrication and tell you what to expect, so you’re not fighting the lock next January.
Trusted Brands We Service in Atherton
We work on Schlage, Kwikset, Medeco, and Abloy hardware every week in Atherton. Medeco and Abloy matter here because their key blanks are patented and can’t be copied at a neighborhood hardware store. That’s key control, and for estates where staff, contractors, and house managers come and go, it’s the difference between knowing who has keys and hoping nobody made a spare. We stock common parts for these lines and carry cylinder pinning kits in the van, so most lock changes happen in one visit without a return trip for a special order.
Common Change Door Locks Problems We See in Atherton Homes
- One lock drops out of the master key system. A previous lock change keyed a new cylinder without checking the pinning chart, so now the pool house door only opens on its own key. We recover the master and restore full coverage before leaving.
- Fog-seized outdoor deadbolts on perimeter fencing. The persistent marine layer in Atherton sits on unpainted iron gate hardware and gate deadbolts for months at a time. A fresh install without weather-rated cylinders fails by spring. We see it every year.
- Multi-point locks only half-engaging. On tall entry doors built for mortise multi-point hardware, a replacement deadbolt often leaves the top and bottom shoot bolts free. The door looks locked and isn’t. We verify full engagement, not just the latch.
- Duplicate key control from a kiosk copy. Someone copied a standard residential key at a retail machine before a contractor handed it back. Now the property has keys no one counted. Patented cylinders from Medeco or Abloy end that problem because blanks can’t legally be cut without authorization.
Pricing for Change Door Locks in Atherton, CA
Honest numbers: a basic knob or deadbolt lock change in Atherton runs $95 – $155 per lock. A mortise lock change starts at $190. High-security cylinders like Medeco or Abloy add $45 – $90 per cylinder depending on pinning and key blank cost. A full estate rekey spanning main house, guest house, pool house, and motor court typically lands between $850 and $1,950, depending on cylinder count and whether we’re building or recovering a master key system. The price is written down before any work starts, and no call-out surcharge appears on the invoice. Call (910) 714-4287 for an exact quote, and we’ll walk the whole property scope with you.
We Also Serve Cities Near Atherton
Dunmore Locksmith covers Atherton and the surrounding Peninsula including Menlo Park, Redwood City, Palo Alto, and Stanford. Our Change Door Locks team handles the same estate-grade hardware work across the wider service area. If your property sits near the Atherton border, we’ll still come out and treat it the same way.
Serving Atherton, CA - Our Local Coverage Area
We’re based in the Atherton 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 Change Door Locks in Atherton
Yes, and that’s exactly the kind of job we do most often here. We verify the existing pinning chart before cutting anything, then key the new cylinder into the master so one key still opens the main house, guest house, pool house, and any other structures on the system. Call (910) 714-4287 and we’ll inspect the current hardware.
We can almost always reconcile them, though it sometimes means rekeying rather than replacing. A large share of Atherton properties have gates and doors keyed separately by different contractors over the years. We carry access-control interface hardware and high-security rim cylinders so we can bring both onto one key or one master system in a single visit.
We install Medeco and Abloy high-security cylinders with patented blanks that can’t be duplicated at a retail machine. You control who gets keys, how many, and whether they can be copied at all. For Atherton estates with rotating staff, that’s the difference between a real key count and a guess.
Not always. If the cylinder and bolt still turn after the correct lubrication, we may be able to preserve the existing hardware. If the internal pins are corroded, you’ll get a longer-lasting result from weather-rated replacement cylinders. Either way, the fix is priced in writing before work starts.
We check the existing integration before changing hardware. On most Atherton patio doors tied to monitored access platforms, the new lock body gets installed so the door still reports open and closed states correctly. If the system needs a minor reprogram, we’ll tell you before the work happens, not after.
Call (910) 714-4287 for a free estimate on changing door locks anywhere in Atherton. A live person answers, you get a written price before anyone is dispatched, and that price is the price on the invoice.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Atherton since 2007 as part of the Threshold Group family.