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 Redwood City
Changing door locks in Redwood City typically costs $65 to $180 per lock for a standard cylinder change, and most jobs are completed the same day. If you’re off Farm Hill Boulevard with a detached workshop and a street gate, or off Seaport Boulevard where salt air eats cylinders, the job is different than it is five miles inland. We know that because we work every part of this city. Call (910) 714-4287 and a live person answers, any hour, every day.
Dunmore Locksmith is part of the Threshold Group network, serving Redwood City since 2007. Our Change Door Locks team coordinates dispatch from the brand’s San Francisco Bay Area office, and our crews serve Redwood City locally. You get a written price before any work starts, and the technician at your door is background-checked, identity-verified, and sent to you by name and photo before the visit.
Key Takeaways: Change Door Locks in Redwood City
- Standard lock change: $65 – $180 per lock, quoted in writing before dispatch.
- Rekey (keying existing locks to a new key): $25 – $45 per cylinder when done as part of a multi-lock visit.
- Master key system for house, shop, and gate: $150 – $300 depending on cylinder count, one service trip.
- Same-day service: Yes, across Redwood City including Emerald Hills, North Fair Oaks, and the waterfront.
- Guarantee: 365-Day Done Right Promise, written, on every job.
Why Dunmore Locksmith Is Redwood City’s Preferred Change Door Locks Company
Redwood City homeowners call us for one reason more than any other: they want to know who is walking up their driveway before they open the door. We send the technician’s name and photo before the visit. The tech arrives in a marked uniform, carries a photo ID badge, and shows it at the threshold. If anyone shows up who you were not told to expect, that visit is covered at no charge. That is the Threshold Standard, and it is not a marketing line. It is how we have run our Redwood City jobs since 2007.
Local knowledge matters here. A lock cylinder off Seaport Boulevard in the Port of Redwood City corridor fails differently than one up in Emerald Hills. A 1940s duplex in North Fair Oaks has different hardware than a newer condo near the Caltrain station. We carry parts for both. Our Redwood City customers routinely tell us the same thing: the written price matched the invoice, the tech showed up when promised, and the lock worked a year later. We hold ourselves to that because the guarantee is on paper, stamped on every job.
Patio Door Lock Change in Redwood City
A Patio Door Lock Change in Redwood City is one of the most common calls we get from the ranch homes and 1950s – 1960s tract houses across Woodside Plaza and Friendly Acres. Sliding glass patio doors from that era often shipped with a flimsy hook latch or a thin mortise lock that a child can pop with a flathead. Redwood City homeowners upgrade these to a proper patio-door bolt or a keyed surface-mount lock when they realize the back slider has been the weakest entry point on the house for fifty years. A standard patio door lock change runs $75 – $150, parts included.
Upgrading Sliding Door Hardware
Many Redwood City patio doors still have the original aluminum latch from the Carter administration. We replace those with a Schlage or Kwikset keyed patio bolt, and we set the strike so the door does not flex open an inch when a kid leans on it. The job takes under an hour in most cases.
Keying the Patio Door to the Front Door
If your back slider has its own separate key, we can key it to match your front deadbolt so one key works the whole house. That is a rekey-and-change combination, typically $40 – $70 added to a patio lock change when we are already on site. It saves you carrying a second key for the next decade.
Door Lock Change in Redwood City
A Door Lock Change in Redwood City means pulling the old cylinder, knob, or deadbolt and installing new hardware, not just rekeying what is already there. You do this when the lock is corroded, the key is snapped off in the cylinder, or the hardware is builder-grade and failing at the strike plate. In North Fair Oaks especially, where 1940s – 1960s duplexes still carry builder-grade knob latches, the strike plate often fails long before the cylinder does. A standard door lock change in Redwood City runs $65 – $180 per door, with the exact figure written down before we start.
Deadbolt Replacement for Front Doors
A new ANSI Grade 1 deadbolt on a front door is the single biggest security upgrade for under $200. We install Schlage and Kwikset deadbolts by default, and we can fit bump-resistant cylinders for Redwood City homeowners who want more than a standard pin-tumbler lock.
Antique and Mortise Lock Retrofit
Near downtown Redwood City, many pre-WWII Craftsman bungalows and Victorian-era homes still have original mortise locksets. We do not rip them out. We rebuild the mortise body or fit a modern cylinder into the existing frame, preserving the door and the trim. That is slower work, but it is the right way to do it on a house that has stood for a century.
Trusted Brands We Service in Redwood City
We install and service Schlage, Kwikset, and Medeco hardware daily, and we carry common cylinder parts and deadbolts for those lines in our Redwood City service vehicles. Abloy hardware shows up more often on commercial and high-security jobs, and our techs are factory-trained on those cylinders as well. Because we stock parts locally, a door lock change in Redwood City does not wait on a distributor shipment. We show up with the right cylinder, the right tailpiece, and the right strike, and we finish the job that day.
Common Change Door Locks Problems We See in Redwood City Homes
- Salt-corrosion failures on waterfront properties: Along Seaport Boulevard and the Port of Redwood City, salt-laden air off the South Bay pits exterior lock cylinders until the pins bind and the key stops turning. We see this at marina offices and industrial doors far more than at inland homes.
- Mismatched keys across multiple structures: Emerald Hills and Edgewood Park acreage parcels often have a house, a workshop, a pump house, and a driveway gate, each on a different key. Owners call us after years of carrying four keys, and we key everything alike in one trip.
- Builder-grade latches failing at the strike plate: North Fair Oaks duplexes built in the 1940s – 1960s frequently still have the original knob latches. The strike plate wallows out, the latch no longer seats, and a hip-check pops the door. A new deadbolt solves what a new cylinder cannot.
- Original mortise locks in pre-war homes: Downtown and the historic districts around the Fox Theatre block have houses with rim locks and mortise locksets that are still mechanical and still working, but their cylinders were last changed decades ago, if ever.
Pricing for Change Door Locks in Redwood City, CA
Here are the honest numbers for Redwood City. A standard door lock change runs $65 – $180 per door. Rekeying a standard knob or deadbolt cylinder costs $25 – $45 when done as part of a visit that already includes other work. A master key system covering a house, detached shop, and gate runs $150 – $300 depending on how many cylinders we are keying. The full price is quoted on the phone before anyone is dispatched, and that is the price on the invoice. There is no call-out surcharge added on arrival, and estimates are free. Call (910) 714-4287 for an exact quote on your Redwood City property.
We Also Serve Cities Near Redwood City
Our Change Door Locks in Redwood City crews also cover the surrounding mid-Peninsula. If you are in Atherton, Menlo Park, San Carlos, or Palo Alto, the same written pricing, background-checked technicians, and 365-day guarantee apply. Dispatch is coordinated from the San Francisco Bay Area office, and service times are the same across the region.
Serving Redwood City, CA - Our Local Coverage Area
We’re based in the Redwood City 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 Redwood City
Yes, and this exact job is a specialty of ours on the acreage parcels in Emerald Hills and Edgewood Park. We pull the cylinders from each structure, key them to a single master key schedule, and upgrade any failing builder-grade hardware while we are there. One service drive covers the house, workshop, shed, and gate. Call (910) 714-4287 and we will quote it by the cylinder count, in writing, before dispatch.
Salt air. The consistent salt-laden breeze off the South Bay near the Port of Redwood City accelerates pitting and corrosion inside exterior lock cylinders within a few years. Inland properties a few miles toward Woodside do not get that exposure, so their cylinders wear differently. On a waterfront lock, we usually replace the cylinder with a corrosion-resistant finish rather than trying to rebuild what the salt has already eaten.
In almost every case, no. A locksmith drills a cylinder only when there is no working key and no other way to retract the latch without damaging the door. If you have the key, we can pull the cylinder cleanly and swap it. If you lost the key, we can often pick it open first. Drilling is a last resort on a Redwood City door, especially an original mortise lockset we cannot replace in kind.
If the existing lock hardware is in decent shape and the tenant returned the keys, a rekey is usually the right call and costs $25 – $45 per cylinder. But in North Fair Oaks, many of those 1940s – 1960s duplexes still carry builder-grade knob latches that have never been upgraded. If the strike plate is wallowed out or the latch is sloppy, a full lock change to a deadbolt is the honest recommendation. We will tell you which one your unit actually needs, and quote it before we touch a single screw.
In most cases, yes, with a retrofit plate and a modern cylinder, but it is not a blind swap. Original mortise locksets in Redwood City’s pre-war commercial and residential buildings have wider faceplates and deeper pockets than modern cylindrical locks, so we fit the smart lock to the existing mortise body rather than hollowing out the door. We have done this on buildings around the Fox Theatre block and throughout the downtown corridor. Call (910) 714-4287 and we will assess your specific mortise lock before quoting anything.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Redwood City since 2007.