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 Pasadena
Changing door locks in Pasadena typically runs $95 – $240 for a standard cylindrical lock swap and $160 – $380 when the job involves an original mortise lock cartridge on a pre-war Craftsman. Most calls in Pasadena are completed the same day, and we quote the full price in writing before any technician heads your way. You will know exactly who is coming to your door, because we send the tech’s name and photo before the visit. For a free estimate, call (910) 714-4287.
Pasadena is not a simple lock-change market. The city holds one of the densest collections of intact 1900 – 1930 Craftsman bungalows in the country, concentrated in Bungalow Heaven, Madison Heights, and the Orange Grove corridor. That means door lock change work here frequently involves original mortise lock sets, skeleton-key hardware, narrow door stiles, and old-growth fir frames that move with the San Gabriel Valley heat. Our Change Door Locks team carries mortise cartridges, strike plates, and rekeying kits for Corbin and Yale hardware that most shops in Los Angeles do not stock. If you live anywhere from Old Pasadena up through Altadena, we know what is behind your door.
Why Dunmore Locksmith Is Pasadena’s Preferred Change Door Locks Company
Perry Osgood leads our Pasadena-facing team, and his approach is simple: send a background-checked, photo-badged technician whose name you know before the doorbell rings, and put the price in writing before any work starts. We have operated as a Threshold Group member business since 2007, and every job carries the 365-Day Done Right Promise. If a repair fails, we return at no charge. That guarantee is written on every invoice.
Pasadena homeowners call us because we do not treat a 1921 mortise lock in Bungalow Heaven the same way we treat a 2005 Kwikset on a condo door. The city’s Mills Act program means hundreds of local owners cannot swap front-door hardware without risking their tax-reduction status. We know how to rekey a mortise cylinder, rebuild a worn box, or install a patio door lock change that preserves historic character and gives you real key control. Dispatch and scheduling run through our Los Angeles office, but the crews serving Pasadena live and work here.
Homeowners call us for another reason too. When you phone Dunmore Locksmith, a live person answers, 24 hours a day. Not a voicemail, not a chatbot. A real human who can dispatch a tech to Pasadena and give you a written price before anyone leaves the shop.
Patio Door Lock Change in Pasadena
A patio door lock change in Pasadena usually runs $110 – $260, depending on whether the sliding door carries a surface-mounted latch, a mortise-style handle, or a multi-point lock. Many Pasadena homes, especially the Spanish Colonial Revival builds in Madison Heights and the ranch houses north of the 210, have rear sliders or French doors that open onto patios and gardens. The lock hardware on these doors is often the weakest point in the whole house, and a worn patio lock is a favorite target for opportunistic entry.
We replace the lock body, rekey the cylinder, or install a keyed patio bolt that matches your existing key system. If the door is a multi-point Euro-style slider, we stock replacement gearboxes and shoot bolts. No modern retrofit on a patio door should force you to carry a second key.
Slider Lock Replacement
The common failure is a surface latch that no longer bites, often because the door frame has shifted after years of Pasadena’s heat-and-Santa-Ana cycle. We realign the door, then install a new keyed or thumb-turn lock. In many cases, the new lock is keyed to match the front door mortise, so one key controls the house.
French Door and Patio Deadbolt
French doors on older Pasadena homes often carry narrow door stiles, which limits what hardware fits. We carry narrow-backset deadbolts and mortise-style patio locks that install without enlarging the stile. If you have a Mills Act property, this matters as much on the back door as it does out front.
Door Lock Change in Pasadena
A door lock change in Pasadena on a standard cylindrical lockset typically runs $95 – $180 per door, including the hardware and labor. On pre-war bungalows and Victorians where the original mortise lock remains, the range shifts to $160 – $380 because the work involves disassembling the lock body, replacing the cartridge or springs, and rekeying the cylinder rather than drilling out the old hardware. Those prices are delivered in writing before the technician starts any work, and they are the prices on the invoice.
We change locks for every common reason in Pasadena: a new home purchase, a roommate or tenant transition, a lost key, or a break-in attempt. In a city with as many older homes as Pasadena, we also see a steady stream of owners who simply want key control over who has copies.
Mortise Lock Rebuild and Rekey
If your 1910s or 1920s door still has the original mortise box, do not let anyone drill it out without a second opinion. We rebuild these locks in place, replace worn springs and tumblers, and rekey the cylinder so old keys stop working. This preserves the door, the hardware, and your home’s historic character.
Front Door Deadbolt Upgrade
For modern doors we install Schlage or Kwikset deadbolts with a 1-inch throw, and we key them to match your existing knob or lever. If your door carries a smart lock or keypad, we can integrate the change with your current system or swap in a new deadbolt that works with your alarm panel.
Trusted Brands We Service in Pasadena
We are factory-authorized to install and service Schlage, Kwikset, Abloy, and Medeco hardware, along with Baldwin, Yale, Mul-T-Lock, and Sargent. For Pasadena’s older homes, we keep Corbin and Yale mortise components on the truck, because a 1924 mortise cartridge is not something you can pick up at a big-box store. When you need a patio door lock change or a full door lock change, we arrive with the right parts for your specific door, not whatever is left in the van. That is the practical difference between a locksmith who knows Pasadena and one who is just passing through.
Common Change Door Locks Problems We See in Pasadena Homes
- Mortise bolts binding in summer heat. San Gabriel Valley temperatures regularly push past 100°F, and the old-growth Douglas fir and redwood door frames in Pasadena’s Craftsman homes expand in that heat. The bolt binds inside the strike plate, and homeowners call thinking the lock is broken. What actually needs to happen is a frame adjustment or strike-plate realignment, not necessarily a lock replacement.
- Deadbolts failing to throw after Santa Ana winds. Fall Santa Ana events drop humidity so quickly that wooden door frames shrink and gap. A deadbolt that worked fine in August suddenly will not engage in October. We tune the frame and align the strike before changing locks, because a new deadbolt will not fix a door that has moved.
- Mills Act restrictions on hardco hardware. Pasadena homeowners with Mills Act contracts cannot drill out narrow door stiles to fit a modern cylindrical deadbolt without jeopardizing their tax status. We rekey the original mortise cylinder, rebuild the lock body, or install a narrow-backset deadbolt that fits the original prep.
- Patio doors with no keyed lock at all. Many older Pasadena homes have sliding patio doors that only carry a flip latch, which is essentially no lock at all. We install keyed patio bolts and slider locks, often keyed to the existing front-door system so you carry one key for the whole house.
Pricing for Change Door Locks in Pasadena, CA
Here is what Pasadena homeowners can expect to pay. A standard door lock change on a modern cylindrical lockset runs $95 – $180 per door. Patio door lock change work runs $110 – $260. Mortise lock rebuilds and rekeys on pre-war homes run $160 – $380 per lock. Rekeying without a full hardware change runs $75 – $145 per cylinder. High-security systems from Medeco or Abloy run $250 – $500 per cylinder, with patented key blanks that cannot be copied at a hardware kiosk. Every quote is written, and every quote is the final price. Call (910) 714-4287 for a free estimate, and we will tell you the exact number before anyone is dispatched.
We Also Serve Cities Near Pasadena
Our Change Door Locks in Pasadena service extends to San Marino, South Pasadena, Altadena, and San Gabriel. Homes in those areas share Pasadena’s pre-war housing stock and heat-driven frame movement, and we see the same mortise-lock and Mills Act constraints in San Marino and South Pasadena as we do in Bungalow Heaven. The same technicians, the same written-price policy, and the same 365-day guarantee apply wherever we go.
Serving Pasadena, CA - Our Local Coverage Area
We’re based in the Pasadena 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 Pasadena
Yes. We rebuild the existing mortise lock body, replace worn springs and tumblers, and rekey the cylinder so old keys stop working. No new holes are drilled, and the original hardware stays in place. This is the standard approach for historic Pasadena homes, and it costs $160 – $380 depending on the condition of the lock body.
Absolutely. We rekey the original mortise cylinder using the existing hardware and cut a new key set that works with your lock. We can also set up a master key system across multiple original locks, including patio doors, without altering any visible hardware. Mills Act compliance is preserved, and your old keys stop working immediately. Call (910) 714-4287 to discuss your specific door configuration.
That is almost always the door frame, not the lock. In Pasadena, 100°F+ summer heat expands old-growth fir and redwood frames, which moves the strike plate just enough to block the bolt. At night the frame cools and contracts, and the deadbolt works again. We fix it by realigning the strike plate and adjusting the frame, which is a faster and cheaper fix than replacing the lock. If the lock itself is worn, we will tell you and quote the replacement in writing.
Yes. We install smart deadbolts and keypad entry systems that talk to existing alarm panels from the major brands, and we key the hardware to match the rest of the house. For a Spanish Colonial Revival in Madison Heights, we also carry narrow-backset and mortise-compatible smart lock adapters that fit without altering the original door prep. The written quote covers hardware, labor, and the integration check.
We do. Old Pasadena’s brick commercial buildings still carry original storefront mortise locks and rim hardware, and those are not a job for a standard residential swap. We service and rekey commercial mortise locks, install access-control readers, and set up master key systems for multi-tenant buildings. For commercial work, we survey the property first, provide a written scope with a flat per-lock price, and schedule the work with the property manager. Call (910) 714-4287 for a free site assessment.
If you need a door lock change in Pasadena, from a Bungalow Heaven mortise rebuild to a rear patio door lock change on a Madison Heights Spanish Colonial, call Dunmore Locksmith at (910) 714-4287. Perry Osgood and the team will give you a written price, tell you exactly who is coming to your door, and back the work with the 365-Day Done Right Promise.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Pasadena and the San Gabriel Valley.