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 Ontario
Changing door locks in Ontario typically costs $95 to $260 for a standard deadbolt or knob replacement, and most jobs are completed the same day we hear from you. If you’ve lost keys, moved into a new home, or had a tenant leave the property, you need the old keys to stop working immediately. That’s what a lock change does, and our Change Door Locks team handles it every day for homeowners across Ontario, from the bungalows off Euclid Avenue to the new subdivisions in Ontario Ranch. Call (910) 714-4287 and a live person answers, any hour.
Why Dunmore Locksmith Is Ontario’s Preferred Change Door Locks Company
Ontario homeowners call us because the technician who shows up is the person we said we were sending. Before every visit, you get the tech’s name and photo, a photo ID badge is shown at the door, and the written price comes before any work starts. That’s the Threshold Standard, and it’s been the backbone of our service since 2007 as part of the Threshold Group family of independent locksmith businesses.
Our Ontario customers regularly point to two things in their feedback: the 365-Day Done Right Promise, which puts a written guarantee on every job, and the fact that a real person answers the phone 24 hours a day. No voicemail. No chatbot. Perry Osgood, who leads our Ontario service area, has built the local team around one idea: you should know exactly who is coming to your door before you open it.
We know Ontario’s streets. We know the difference between a 1950s ranch home on Euclid Avenue with worn, non-standard keyways and a 2019 Ontario Ranch build with a smart-lock prep that’s misbehaving. That local knowledge means faster diagnosis and the right hardware on the first visit.
Lock Change in Ontario
Lock Change in Ontario means removing the existing hardware from your door and installing a new lock, whether a deadbolt, knob, lever, or electronic deadbolt. Homeowners across the city need this after a break-in, a lost key, a separation, or when a door starts sticking so badly the bolt won’t throw. It’s the right call when you need a physical fresh start on a door, not just a rekeyed cylinder. Pricing for a standard lock change in Ontario runs $110 to $260, including the new hardware, and we quote the full price in writing before dispatch.
When to Replace Instead of Rekey
If the lock body itself is worn, the keyway is non-standard and no longer made, or you want to change the style and finish of your door hardware, a lock change is the better choice. In Ontario’s pre-1970s bungalows, we often find original passage sets that have been rekeyed so many times the cylinders are sloppy. A full lock change with an ANSI Grade 1 deadbolt is the honest fix there.
What a Lock Change Includes
Every lock change in Ontario includes removal of the old hardware, installation of the new lock, alignment of the strike plate, fresh keys, and a function test of the bolt throw. The written guarantee covers the work for 365 days. If anything fails, we return at no charge.
Change Lock Cylinder in Ontario
Change Lock Cylinder in Ontario is a more targeted job: we swap out just the internal cylinder of your existing lock so the old keys no longer turn it, while the exterior hardware stays in place. This is common when a homeowner wants to keep matching brass or oil-rubbed bronze hardware across the house but needs to invalidate old keys after a tenant leaves or a key goes missing. A cylinder change in Ontario typically runs $95 to $180 per lock, and it’s often paired with a full rekey so every door responds to a single new key.
Cylinder Swap vs. Full Lock Change
If the finish and body of your lock are still solid, a cylinder change costs less and takes less time. If the bolt is binding, the strike plate is loose, or the lock is a builder-grade unit that’s reached the end of its service life, replacing the whole lock makes more sense. We’ll tell you which one you need, and the written quote matches the final invoice.
Non-Standard Keyways on Older Ontario Homes
Many Euclid Avenue bungalows still carry original cylinders with keyways that modern blanks won’t fit. A cylinder change on these doors requires matching the existing tailpiece and bolt pattern, which is exactly the kind of work our techs do regularly across Ontario. We stock cylinders for the older Kwikset, Schlage, and Weiser profiles found in these homes.
Trusted Brands We Service in Ontario
We install and service Schlage, Kwikset, and Medeco hardware across Ontario, and we keep a local stock of common cylinders, deadbolts, and strike plates so you’re not waiting on a parts order. For Ontario Ranch homes with builder-grade smart locks, we’re factory-authorized on the major electronic deadbolt lines and handle firmware pairing issues as well as mechanical bolt repairs. If the hardware on your door says Medeco, we can service it under warranty. If it says Kwikset and it’s fighting you at 6 p.m. on a summer evening, we can replace it before dark.
Common Change Door Locks Problems We See in Ontario Homes
- Heat-bound deadbolts on aluminum and steel frames. Summer afternoons in Ontario push 105°F to 110°F, and the metal frame expands enough that the bolt strikes short and won’t fully throw. We fix this with stainless reinforced strikes and slightly enlarged mortise pockets that give the bolt room to seat.
- Dry cylinders from Santa Ana wind cycles. Graphite and oil-based lubricants desiccate within months in Ontario’s inland air, leaving pin and tumbler stacks so dry that keys jam or snap mid-turn. We clean and re-lubricate cylinders with a dry film that holds up to the heat.
- Builder smart-lock failures in Ontario Ranch. Firmware mismatches and lost pairing codes leave keypad deadbolts unresponsive, even when the mechanical bolt still works. We re-flash or re-pair these units, then re-pin the fallback cylinder so a physical key always works.
- Worn non-standard keyways on pre-1970s bungalows. Original passage sets along the Euclid Avenue corridor often use keyways no modern blank fits. A straight lock change avoids reframing the door, and we stock the replacement cylinders that match these older profiles.
Pricing for Change Door Locks in Ontario, CA
A standard lock change in Ontario runs $110 to $260 per door. A cylinder change runs $95 to $180 per lock. Labor and hardware are included in these ranges, and the price is delivered in writing before any technician is dispatched. What shifts the number is the hardware grade: a Kwikset entry knob costs less than an ANSI Grade 1 Schlage deadbolt, and a Medeco high-security cylinder costs more than a standard pin-tumbler cylinder. There’s no call-out surcharge added when the tech arrives, and no ballooning estimate. The written quote is the invoice. Call (910) 714-4287 for a free estimate on your specific doors.
We Also Serve Cities Near Ontario
Our Change Door Locks in Ontario team regularly dispatches to Montclair, Claremont, Upland, and Rancho Cucamonga. If you’re in a neighboring city and need a lock changed, the same written pricing, named technician, and 365-day guarantee apply. We coordinate scheduling and dispatch from our Inland Empire office, with crews serving Ontario locally.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario 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 Ontario
Your door frame expands in the heat. Ontario’s inland valley location regularly sees 105°F to 110°F summer days, and steel or aluminum frames expand enough that the strike plate shifts and the bolt hits the edge instead of seating. We fix this by installing a stainless reinforced strike with a slightly larger mortise pocket, which gives the bolt room to throw even when the frame moves. Call (910) 714-4287 and we’ll diagnose it on the first visit.
Yes, they do. Ontario Ranch smart-lock preps are firmware-driven, and most failures are electrical or code-related, not mechanical wear. A lost pairing code, a failed motorized bolt, or a firmware mismatch requires a tech who can re-pair the keypad, re-flash the module, or replace the motorized bolt without losing your app connection. We handle these jobs regularly, and we always re-pin the fallback cylinder so a physical key keeps working even if the electronics fail. Call for a written quote before any work starts.
Yes. The bungalows along Euclid Avenue often have non-standard keyways and original passage sets, but the door itself is usually solid wood and worth keeping. We can swap the cylinder to a modern profile, or install a new ANSI Grade 1 deadbolt in the existing bore, and rekey the passage set to match. The work doesn’t require reframing the door. Call (910) 714-4287 and tell us the age of your home, and we’ll bring the right cylinder and tailpiece on the first trip.
Stainless steel and marine-grade hardware hold up best in Ontario. The heat-binding and desiccation problems we see on standard aluminum and brass hardware are much less common with stainless reinforced strikes, stainless deadbolts, and cylinders lubricated with dry film rather than graphite or oil. For high-wear doors, we recommend ANSI Grade 1 Schlage deadbolts. For maximum key control, Medeco cylinders are our go-to. Call (910) 714-4287 and we’ll recommend the right hardware for your specific doors and exposure.
If the existing hardware is in good shape and you just want the old keys to stop working, a rekey is usually enough and costs less. If the locks are worn, the keyway is non-standard, or you want to upgrade to a deadbolt with a different finish or higher security grade, a lock change is the better investment. In Ontario’s older bungalows, we often recommend a lock change on the front and back doors with a rekey on interior locks to match. Call (910) 714-4287 and we’ll walk through what your home actually needs, with a written price before you commit.
Dunmore comes from old words for a great fort, a stronghold built to keep what is inside safe. That’s the standard we work to on every lock change in Ontario. Call (910) 714-4287 for a free estimate, answered by a live person any hour of the day or night.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Ontario since 2007.