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 Hillsborough
Changing door locks in Hillsborough usually costs between $145 and $390 per lock including hardware and labor, with a full estate-scale rekey running $450 to $1,200 depending on how many cylinders and access points are involved. We can typically have a technician at your Hillsborough property within 45 to 60 minutes, and you’ll know the exact price before we dispatch anyone. Call (910) 714-4287 and a live person answers, any hour, every day.
Hillsborough isn’t like other Peninsula cities. There are no apartment complexes, no storefronts, no commercial buildings. Every single call we take here is for a private estate, and most of those estates have hardware that generic lock-change crews simply don’t stock parts for. That’s why we keep Medeco, Mul-T-Lock, Abloy, and Schlage cylinders on the truck whenever we head up from the San Francisco Bay Area office into Hillsborough. When the tech shows up, you know the name and the face before the door opens. That’s the way it should work everywhere, but it matters more here.
Why Dunmore Locksmith Is Hillsborough’s Preferred Change Door Locks Company
Dunmore comes from old words for a great fort, a stronghold built to keep what is inside safe. That’s not marketing copy. It’s the premise we work under. Our technicians are background-checked and identity-verified, and before any visit you receive the tech’s name and photo. At the door, they show a photo ID badge. If someone arrives who you were not told to expect, that visit is covered at no charge. We call this the Threshold Standard, and it’s why Hillsborough homeowners who are often alone, or have young kids, or simply don’t want to gamble on who’s at the door choose us. Perry Osgood, who leads Dunmore Locksmith, has built the Hillsborough service around one guarantee: the price goes in writing before any work starts, and every repair is covered for 365 days. If it fails, we return at no charge.
We don’t run countdown clocks or tell you “only two slots left.” We tell you who is coming, what they’ll do, and what it costs. That steadiness is what Hillsborough homeowners tell us they value most.
Door Lock Change in Hillsborough
A door lock change in Hillsborough means removing the existing lock hardware from the door and installing a new locking mechanism in its place. In most of our work here, that involves swapping a worn cylinder rather than replacing a perfectly good mortise lock body. The distinction matters, because Hillsborough’s housing stock from the 1920s through the 1940s often has original heavy-duty mortise lock bodies that a modern cylindrical deadbolt simply won’t fit without butchering the door. We check first, and we tell you honestly whether you need a full replacement or just a cylinder change.
Cylinder Replacement on Original Doors
When the lock body is sound but the cylinder is worn, a cylinder swap restores key control without altering the door. In Hillsborough, that’s common on Spanish Colonial Revival and Mediterranean estates where owners want to preserve original hardware. A standard cylinder replacement in Hillsborough typically runs $145 to $220 per door.
Full Lock Replacement on Warped or Damaged Doors
Some of the original doors here have shifted over decades. The strike plate no longer lines up, the bolt drags, and a new lock that should drop in will not. In those cases we measure the mortise pocket, correct the strike alignment where possible, and install hardware that fits what’s actually there, not what the box says should be there. Full lock replacement including a new Schlage or Baldwin set runs $265 to $390 per door in Hillsborough.
Lock Change in Hillsborough
A lock change in Hillsborough often isn’t a single-door job. Because the town is zoned exclusively for ultra-high-end single-family homes, with no apartments or commercial buildings anywhere in town, nearly every call is an estate-scale property running premium European cylinders alongside gate and smart-home access. A typical Hillsborough lock change means a main residence, a guesthouse, a motor court gate, and a detached garage, often all on different key systems. That’s a scope of work a Burlingame or San Mateo locksmith rarely encounters. We handle it as the standard, not the exception.
Whole-Property Rekey After Staff Changes
When household staff changes over, a single-property rekey across multiple structures is the most common request we get in Hillsborough. We rekey every cylinder so old keys stop working everywhere, main house, guesthouse, gate, garage, in a single visit. Pricing for a whole-property rekey in Hillsborough typically runs $450 to $1,200 depending on how many cylinders and access points the estate has.
High-Security Cylinder Lock Changes
Hillsborough homes routinely run Medeco, Mul-T-Lock, and Abloy restricted keyway cylinders. These are not standard pin-and-tumbler locks, and rekeying them requires authorized keycards and proper training. We are factory-authorized on all of those lines, so key control stays intact and you keep the restricted keyway protection. Expect $85 to $140 per high-security cylinder for a lock change, with the labor included.
Trusted Brands We Service in Hillsborough
We stock Schlage and Kwikset cylinders for the standard work, and we carry Medeco, Mul-T-Lock, and Abloy cylinders specifically because Hillsborough estates depend on them. When a homeowner off Floribunda Avenue needs a Mul-T-Lock cylinder rebuilt or an Abloy cam mechanism replaced, we don’t have to order parts and come back next week. We carry what Hillsborough doors actually use. That’s a deliberate choice, not an accident of inventory. It means faster turnaround on a town where every property is residential and every residential property is substantial.
Our techs have factory authorization on Schlage, Kwikset, Medeco, Yale, Baldwin, Mul-T-Lock, Sargent, and Abloy hardware. The authorization matters for one reason: high-security cylinders require vendor-specific keycards and pin kits to rekey properly. A generic locksmith can’t do it without breaking key control.
Common Change Door Locks Problems We See in Hillsborough Homes
- Forced modern deadbolts in warped original doors: On 1920s to 1940s homes, we regularly see modern cylindrical deadbolts that were forced into mortise pockets that were never measured. The door binds, the bolt drags, and the strike placement never aligns. Fixing it often means pulling the modern lock, restoring or replacing the mortise body, and aligning the strike properly.
- Rekeyed high-security cylinders that lost key control: A Medeco or Mul-T-Lock cylinder rekeyed by a technician without the proper keycard and pin kit often loses its restricted keyway function. The lock works, but the protection is gone. We restore the cylinder to factory-spec key control on the same visit.
- Corroded wrought-iron gate locks: The coastal fog rolling in off the Bay keeps motorized gate locks and exposed hardware damp. Internals rust, lubricant breaks down, and the mechanism fails within a season or two. Regular cleaning and lubrication extends the life, but once rust sets in, the cylinder and often the cam need replacement.
- Detached garage and outbuilding locks on different key systems: Many Hillsborough properties have a motor court gate, a detached garage, and sometimes a guesthouse, each keyed separately over the years. Owners often don’t realize how many different keys exist until someone leaves. We consolidate everything onto one controlled key system during a lock change.
Pricing for Change Door Locks in Hillsborough, CA
Here’s what Hillsborough homeowners can expect to pay for a change door locks job. A standard cylinder replacement runs $145 to $220 per door. A full lock replacement with a new Schlage or Baldwin set runs $265 to $390 per door. A whole-property rekey across a main house, guesthouse, gate, and detached garage typically runs $450 to $1,200. High-security Medeco, Mul-T-Lock, or Abloy cylinders run $85 to $140 per cylinder rekeyed or changed, not including the price of matching original hardware if replacement parts are needed. The biggest variables are the number of cylinders on the property, whether the hardware is standard or high-security, and whether any original mortise lock bodies need restoration work.
We give you one number on the phone before anyone is dispatched, and it’s the number on the invoice. No call-out surcharge added on arrival. Call (910) 714-4287 for a free estimate.
We Also Serve Cities Near Hillsborough
While this page covers Hillsborough specifically, our crews also serve nearby communities across the region. We handle Change Door Locks work in Los Angeles, San Diego, San Jose, and San Francisco. If you’re outside Hillsborough but nearby, call (910) 714-4287 and we’ll route the nearest technician.
Serving Hillsborough, CA - Our Local Coverage Area
We’re based in the Hillsborough 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 Hillsborough
Yes, in most cases we can rekey the original mortise lock without replacing it. The lock body is often still mechanically sound even after 80 or 90 years. What fails is the cylinder, the pin and tumbler stack, or the strike alignment. We rekey the cylinder in place, or fit an antique-compatible replacement cylinder into the existing mortise body. This preserves the original period hardware. Full replacement is only necessary when the lock body itself has cracked or the internal springs have failed. Call (910) 714-4287 and we’ll assess it honestly, with photos sent to you before any work is done.
Not properly, because Medeco cylinders require the authorized keycard and factory pin kit to rekey without breaking key control. We are factory-authorized on Medeco, so we can change or rekey the cylinder and keep the restricted keyway protection intact. A technician without that authorization either can’t do the job or will do it in a way that defeats the point of having a Medeco lock. Call (910) 714-4287 and we’ll tell you what you have and what it needs.
Yes, one visit is standard. In Hillsborough that usually means a main residence, a guesthouse, a motor court gate, and a detached garage. We rekey every cylinder so all old keys stop working everywhere, then cut new keys on one system. The whole-property rekey typically runs $450 to $1,200 in Hillsborough. Call (910) 714-4287 for a written quote before we dispatch.
The persistent coastal fog and marine layer keeps exterior hardware damp, and that salt air corrodes the internal cam mechanisms and breaks down lubricant far faster than locksmiths see in drier Peninsula towns like Woodside. Wrought-iron gate locks and exposed cylinders need regular cleaning and lubrication, but once rust sets in, the cylinder and often the cam need replacement. We stock replacement Abloy and Schlage cylinders for exactly this failure mode. Call (910) 714-4287 and we can inspect the gate hardware while we’re on site.
In almost all cases, no. Hillsborough’s older doors are original, and we will not drill through a 1930s door to force in a modern lock. We measure the mortise pocket, use antique-compatible cylinders where the hardware is original, and only resort to drilling when a lock has failed so badly that the cylinder cannot be removed any other way. Even then, we drill the cylinder only, never the door. Call (910) 714-4287 and describe what you have; we’ll tell you what’s possible before anyone comes out.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Hillsborough since 2007.