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 Altadena
Changing door locks in Altadena usually means one of two jobs: swapping the hardware entirely, or replacing just the cylinder so old keys stop working. Most Altadena homes we visit need a decision on that fork before we touch a screwdriver, because the pre-war bungalows here often have original mortise bodies that don’t accept modern cylinders without adaptation. Call Dunmore Locksmith at (910) 714-4287 and we’ll tell you over the phone which route your door needs, then put the exact price in writing before any work starts.
Why Dunmore Locksmith Is Altadena’s Preferred Change Door Locks Company
Altadena homeowners don’t just want a new lock. They want to know who is standing on the porch before the door opens. That concern runs deeper here than in neighboring Pasadena, because Altadena is unincorporated LA County with no municipal locksmith licensing layer. Nobody gets a city-issued locksmith permit here. We answer that gap with the Threshold Standard: every technician is background-checked, identity-verified, and sent to you by name and photo before the visit. The person at the door shows a photo ID badge. If someone shows up who you were not told to expect, that visit costs you nothing.
Perry Osgood leads our Altadena work, and our techs know the difference between a 1928 mortise body and a 2004 Kwikset knob by sight. That matters when half the job is telling a homeowner honestly whether a rekey will hold or the cylinder needs replacement. We answer the phone live, 24 hours a day, every day. No voicemail tree, no chatbot. You call, a real person picks up, and you get a written price before dispatch.
Lock Change in Altadena
Lock change in Altadena means removing the existing hardware from the door and installing new, keyed components. In this community that often starts with an older mortise lockset in a 1920s craftsman or a single-cylinder knob in a post-war ranch. A standard residential lock change in Altadena typically runs $95 to $180 per door for common hardware, with the exact figure quoted in writing before we arrive. That price covers the new lock, labor, and disposal of the old hardware.
The wild card in Altadena is the door itself. Many original wood doors have racked over decades of Santa Ana wind cycles, so the new bolt may not align with the old strike without adjustment. We account for that in our written quote rather than surprising you at the end.
Full Hardware Replacement
When the existing lock is a skeleton-key setup with no deadbolt, the right call is often a full replacement. We pull the old mortise body and fit a modern deadbolt with an ANSI Grade 1 strike, keeping the original brass trim where possible. Altadena homeowners frequently choose this route on back doors and side gates.
The key question we answer first: does this door accept a standard cylindrical bore, or does it need a mortise-specific solution? If the door is original, the answer changes the labor. Our quote reflects that before we start.
Rekey Versus Replace Decision
Sometimes a lock change is actually a rekey in disguise. If the hardware is in good shape and you just want old keys dead, we can rekey (changing the internal pins so your old keys no longer work) for $25 to $45 per cylinder. But on worn Altadena mortise bodies, a rekey often won’t hold torque, and the cylinder itself has to be replaced. That’s the honest fork we walk through on the phone.
Change Lock Cylinder in Altadena
Change lock cylinder in Altadena is a more surgical job than a full lock swap. We remove the old cylinder from the existing lock body, install a new one, and cut new keys. The lock body stays. A cylinder change in Altadena typically runs $65 to $120 per cylinder, depending on whether it’s a standard pin-tumbler format or an older mortise cylinder that needs extra labor to extract.
This is the most common call we field on original Altadena mortise locksets. The brass body is still solid, but the cylinder inside is worn to the point where the key wiggles and the pins don’t hold. Replacing the cylinder restores key control without cutting new mortises into century-old wood.
Mortise Cylinder Replacement
Original mortise cylinders in 1920s and 1930s Altadena homes are no longer produced in the common formats you’ll find at a hardware store. They have threaded collars, through-bolts, and swing-arm cams that don’t match modern replacements. We stock mortise cylinder kits and can order the exact format within a day or two.
A standard rekey often fails on these bodies because the cylinder bore is wallowed from eighty years of use. We see it regularly behind original brass trim. The fix is a fresh cylinder, not more pins.
Deadbolt Cylinder Swap for Santa Ana Wind Damage
Altadena sits at the San Gabriel foothills and catches some of the most intense Santa Ana wind events in the LA Basin. Dust and grit work into exposed deadbolt cylinders. Thermal cycling and racking doors cause the bolt to miss the strike by a fraction of an inch. Homeowners think the lock failed. Often the cylinder is just packed with grit or the door has shifted. We swap the cylinder when the pins are shot, and adjust the strike when the door has moved. That distinction saves Altadena residents from buying hardware they never needed.
Trusted Brands We Service in Altadena
We carry and service Kwikset, Medeco, Yale, and Baldwin hardware, along with Schlage and Mul-T-Lock. For Altadena’s older stock, Baldwin matters because their mortise-compatible trims match the look of original brass and oil-rubbed bronze on pre-war bungalows. Kwikset covers the budget-conscious rekey work on rental units and rebuild properties. Yale and Medeco serve homeowners who want high-security cylinders on fire-rated steel doors. We keep common cylinders and strikes on the truck so most Altadena jobs finish in one visit.
Common Change Door Locks Problems We See in Altadena Homes
- Worn original mortise lock bodies. In 1920s to 1950s Altadena bungalows, the lock body itself is often so worn that a standard rekey will not hold. The cylinder has to come out and get replaced, not just repinned.
- Skeleton-key locks with no deadbolt. Many original doors off Lake Avenue and around Farnsworth Park still operate on a single skeleton-key knob. There is no deadbolt. A bump or a shove and the door opens.
- Santa Ana wind racking. Doors on west-facing Altadena streets shift seasonally. A deadbolt that lined up in October misses its strike by November. It’s not a bad lock; it’s a moved door. We adjust first, replace only when warranted.
- Eaton Fire rebuild mismatches. New builds going up beside century-old parcels often get modern Schlage or Kwikset cylinders that do not drop into an old mortise pocket without adapters. Cheap swaps fail within months, and we redo a lot of them.
Pricing for Change Door Locks in Altadena, CA
A full lock change on a standard Altadena door runs $95 to $180. A cylinder-only change runs $65 to $120. A plain rekey lands at $25 to $45 per cylinder. Those are the real ranges for this market, and the price goes in writing before anyone is dispatched. That written price is the price on the invoice. No call-out surcharge added on arrival, no “the door is worse than we thought” balloon. If you tell us the door is a 1930s original, we quote for that door, not for a new-build slab. Call (910) 714-4287 and get an exact number for your specific lock before we schedule the visit.
We Also Serve Cities Near Altadena
Our Change Door Locks teams cover the broader foothill corridor. If you’re in Pasadena, San Marino, Sierra Madre, or South Pasadena, we bring the same written-price commitment and the same Threshold Standard vetting. Many of our Altadena customers call us after moving from these neighboring cities, so our name already travels the area. See our full Altadena coverage for local specifics.
Serving Altadena, CA - Our Local Coverage Area
We’re based in the Altadena 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 Altadena
It depends on the condition of the cylinder and the lock body. If the body is solid and the cylinder still holds torque, we can rekey it for $25 to $45 per cylinder. But many original Altadena mortise cylinders are wallowed from decades of use, and a rekey will not hold. In those cases we replace the cylinder, not the whole trim. That runs $65 to $120 per cylinder. We’ll tell you which route your lock needs before we quote. Call (910) 714-4287 for an honest assessment over the phone.
You have two. We can keep the skeleton-key function and add a modern deadbolt above it, which preserves the vintage look while giving the door genuine key control. Or we can convert the mortise pocket to accept a modern cylindrical lock, which requires boring a new hole and patching the old mortise cavity. On a 1920s craftsman, most homeowners choose the first route: keep the original, add a Baldwin single-cylinder deadbolt with an ANSI Grade 1 strike. We quote both options in writing before work begins.
Yes, this is a standing part of our Altadena workload. Since the January 2025 Eaton Fire, we have rekeyed properties purchased in the burn zone, fit new hardware on rebuilds beside century-old parcels, and padlocked chain-link fence gates on bare concrete slabs to protect salvageable plumbing and metal while owners wait on insurance. If you are buying or securing a recovery-zone property, we can survey the site, give you a per-lock price, and schedule the work. Call (910) 714-4287.
No municipal agency licenses locksmiths in unincorporated Altadena. Work here falls under LA County jurisdiction and the Altadena Sheriff’s Station. So the vetting burden falls on the homeowner, which is exactly what the Threshold Standard answers: every Dunmore technician is background-checked, identity-verified, photo-badged, and sent to you by name and photo before the visit. If the person at your door is not the person we told you to expect, that visit costs you nothing.
Yes. Smart locks with a physical key override can be rekeyed without replacing the electronics. For keyless smart locks, disabling old digital access codes is a programming job, and we can do that during the same visit. Many post-Eaton-Fire rebuilds in Altadena use smart hardware, and we configure or rekey it so any contractor, realtor, or prior owner who still has a code or key loses access the day you close. Call (910) 714-4287 and we’ll give you a written price before coming out.
What Shapes Change Door Locks Calls in Altadena
Altadena is not a city. That fact does more than confuse the mail; it means locksmith work here operates under County Sheriff jurisdiction out of the Altadena Station with no municipal license layer, and the January 2025 Eaton Fire has permanently changed the call mix. We still do routine lock swaps on Lake Avenue bungalows, but we also rekey burn-zone purchases, fit hardware on fresh rebuilds, and padlock chain-link gates on bare concrete slabs where a house used to stand. Nothing about that second category shows up on a generic locksmith page.
One call that stuck with us came from a 1920s craftsman off Mendocino Lane. Our tech found an original mortise lock with a worn skeleton-key cylinder and no deadbolt. We rekeyed the existing mortise body to keep the original brass trim, then fitted a Baldwin single-cylinder deadbolt with an ANSI Grade 1 strike so the door finally had real key control. The homeowner kept one vintage key for the mail slot and gained a modern deadbolt without cutting new mortises into century-old wood. That job could only happen in a place with Altadena’s specific housing stock, and our crew has done it enough times to quote it accurately on the first call.
That is the fork Altadena presents, and the one this page exists to answer: rekey the original, or replace the cylinder, or swap the whole lock out. The answer depends on the condition of the door, which in this drought-and-wind climate means it depends on things a chain locksmith can’t see from a call center. We see it, we name it, and we put a written price on it.
Call Dunmore Locksmith at (910) 714-4287 for a free estimate on changing door locks in Altadena. We answer live, any hour, and the price we quote on the phone is the price you pay.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Altadena since 2007.