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 Pomona
Changing door locks in Pomona typically costs $95 – $240 per lock for standard residential hardware, with most jobs completed in under an hour once our technician arrives. We work throughout Pomona every day, from the Craftsman streets around Lincoln Park to the mid-century tracts south of Holt Avenue and the rental pockets near Cal Poly Pomona. Our crews know which lock sets your home actually has, not just what the big-box aisle sells. Call (910) 714-4287 and a live person answers, day or night.
Why Dunmore Locksmith Is Pomona’s Preferred Change Door Locks Company
Dunmore Locksmith is the Threshold Group member serving Pomona, and we have operated under that standard since 2007. Every technician sent to a Pomona address is background-checked, identity-verified, and sent to you by name and photo before the visit. When the person at your door matches the photo we sent, you open it with confidence. That is The Threshold Standard, and it is written into how we work: the price goes in writing before any work starts, and every job carries our 365-Day Done Right Promise. If the repair fails, we return at no charge, for a full year.
Pomona residents call us because the alternative is a stranger with a drill and a vague estimate. We do not work that way. Perry Osgood leads our team, and the way we handle a lock change on a 1920s Craftsman bungalow is the same way we handle a mid-century rental turnover in the south flats: written price first, named technician second, work that holds up to a Pomona summer third. Reviews from Pomona customers consistently mention two things: the technician arrived exactly when promised, and the invoice matched the quote.
Dunmore comes from old words for a great fort, a stronghold built to keep what is inside safe. That is the standard we hold in Pomona, where much of the housing stock predates modern security hardware and the heat does things to door frames that coastal locksmiths rarely see.
Door Lock Change in Pomona
A door lock change in Pomona means removing the existing lock body or cylinder and installing new hardware, rather than reworking the internal pins of the lock you already have. Homeowners in Pomona choose a full lock change when a lock is worn past reliable repair, when keys have been lost to an unknown party, after a break-in or attempted entry, or when upgrading from a knob-only lock to a deadbolt-plus-handle set. Standard knob or lever replacement runs $85 – $160 per lock, while a complete entry set with a Grade 1 deadbolt and handle typically runs $180 – $275 installed. Every quote is delivered in writing before we touch a single screw.
When a full replacement beats a rekey
If your existing lock still throws and retracts smoothly, a rekey is usually the cheaper move. But when the cylinder wobbles, the bolt sticks, or the tailpiece has worn so far that the key turns without engaging, a lock change is the honest fix. We see this constantly on the original mortise lock sets and hollow-core doors that dominate Pomona’s pre-1970s housing stock.
Legacy hardware swaps
In Pomona’s Lincoln Park and downtown-adjacent neighborhoods, many homes still carry original 1920s – 1940s mortise lock sets. Big-box replacement cylinders will not fit these sets, the tailpiece dimensions do not match. We know which specialty locksmith wholesalers carry compatible mortise components, and that sourcing difference is the whole job.
Lock Change in Pomona
A lock change in Pomona typically refers to replacing the locking cylinder and often the surrounding hardware on an existing door, and it is the most requested service we handle in this city. Cost runs $75 – $180 for a single cylinder swap on standard Schlage or Kwikset hardware, while mortise cylinder replacements on older Pomona homes run $120 – $240 because the compatible parts come from specialty suppliers, not the shelf at a home center. Landlords managing Cal Poly Pomona rental turnover keep us busy year-round, and we handle same-day lock changes across the city.
Mortise cylinder replacement done right
When we replace a mortise cylinder on an original lock set, the goal is to preserve the escutcheon and the door. We saw this recently on a 1928 Craftsman west of Lincoln Park where the original cylinder’s tailpiece had wallowed out, and on hot afternoons the bolt would not retract cleanly as the door frame swelled. We sourced a compatible mortise cylinder and tailpiece, kept the original faceplate, and paired it with an ANSI Grade 1 deadbolt keyed to a master key system. The landlord kept key control across the property, and the door still looks like 1928.
Rental turnover lock changes
For Pomona landlords, a lock change between Cal Poly tenants needs to be fast, documented, and priced flat per lock. We handle rekeys and cylinder swaps on Schlage knob locks and deadbolts across the fourplexes and small apartment buildings near campus, and we can add bump-resistant cylinders to units still running builder-grade hardware.
Trusted Brands We Service in Pomona
We are factory-authorized to install and service Schlage, Kwikset, Medeco, and Yale hardware, along with Mul-T-Lock and Baldwin for Pomona homes that need restricted keyways or higher-security cylinders. Because we work Pomona’s older housing stock daily, our vans carry the mortise-compatible components and tailpiece sizes that never appear on big-box shelves. That means a lock change on a 1930s bungalow does not wait on a parts order. For Pomona customers upgrading to restricted or patented key systems so keys cannot be copied at a kiosk, Change Door Locks is our core specialty.
Common Change Door Locks Problems We See in Pomona Homes
- Original mortise lock sets that big-box parts cannot fit. Pomona’s 1920s – 1940s Craftsman bungalows and downtown-adjacent homes often still carry their original mortise lock sets, and the cylinder and tailpiece dimensions do not match modern replacements. A correct lock change here requires sourcing from specialty locksmith wholesalers.
- Deadbolts that stop turning every summer when it tops 100°F. Pomona sits deep in the inland valley, beyond the marine layer. Sustained heat swells wood door frames until deadbolts pull out of strike-plate alignment, turning a simple cylinder swap into a strike-plate and jamb repair call. We see this spike after every heat wave.
- Inland UV destroying keypad and smart lock components on an accelerated timeline. The intense sun that hits Pomona degrades plastic keypads and rubber-sealed electronic components noticeably faster than in coastal LA communities. A keypad entry failure on a three-year-old lock in Pomona is common; the same hardware in Santa Monica would still look new.
- Hollow-core doors with undersized strike plates. Much of Pomona’s mid-century tract housing went up with hollow-core doors and lightweight single-cylinder deadbolts. The strike plates are often undersized, and a lock change on these doors should include a reinforced strike plate, which we do as standard practice.
Pricing for Change Door Locks in Pomona, CA
Expect to pay $85 – $160 for a standard knob or lever lock change in Pomona, $95 – $240 for a deadbolt or entry set replacement, and $120 – $240 for a mortise cylinder replacement on a pre-1970 home. A landlord doing three or four units near Cal Poly Pomona will usually land around $300 – $600 total for standard Schlage hardware, parts and labor included. What changes the price is the door and the hardware condition: hollow-core doors with undersized strike plates take more labor to reinforce, and legacy mortise components cost more to source than off-the-shelf cylinders. The price we quote on the phone is the price on the invoice. There is no call-out surcharge on arrival. Call (910) 714-4287 for a free estimate.
| Service in Pomona | Typical Price Range |
|---|---|
| Standard knob or lever lock change | $85 – $160 |
| Deadbolt replacement (single cylinder) | $95 – $180 |
| Complete entry set with Grade 1 deadbolt | $180 – $275 |
| Mortise cylinder replacement (pre-1970 homes) | $120 – $240 |
| Rekey standard knob lock (for comparison) | $65 – $110 |
We Also Serve Cities Near Pomona
Our Pomona customers often ask us to handle lock changes at rental properties or family homes just over the city line. We regularly serve Diamond Bar, Montclair, Chino Hills, and Claremont with the same written pricing and named-technician standard.
Serving Pomona, CA - Our Local Coverage Area
We’re based in the Pomona 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 Pomona
Yes, in most cases we can replace just the mortise cylinder and tailpiece while keeping your original escutcheon and door hardware, which is the correct approach for a 1920s Craftsman in Pomona. The compatible cylinders and tailpieces come from specialty locksmith wholesalers rather than big-box stores, and we stock the common mortise component sizes in our vans. Call (910) 714-4287 with a description of your lock, and we will bring the right parts on the first trip.
When Pomona hits sustained 100°F-plus heat, the wood in your door frame swells and pushes the deadbolt out of alignment with the strike plate, so the bolt cannot seat or retract cleanly. The fix is usually a strike-plate realignment and sometimes a jamb repair, not a new lock, but we will assess it on site before recommending anything. Call (910) 714-4287 and we can be at your Pomona door the same day.
The fastest reliable method is a cylinder rekey with a written key-control log, which takes about fifteen minutes per lock and typically costs $65 – $110 per standard knob lock in Pomona. If the existing cylinder is worn or the tailpiece is failing, we recommend a full cylinder swap at $75 – $180 per lock, so the next tenant is not dealing with a sticky bolt on move-in day. Call (910) 714-4287 and we will schedule a block of units so your vacancy window stays short.
Yes, we install Medeco, Mul-T-Lock, and other restricted and patented key systems in Pomona, and a restricted keyway means no kiosk or hardware store can duplicate the key without your authorization. For a landlord near Cal Poly Pomona or a homeowner in the historic core, this is the strongest key-control option available, and pricing is quoted per cylinder after we assess your doors. Call (910) 714-4287 for a written quote.
We service and replace multi-point locking systems on tall entry doors throughout Pomona, including the larger custom homes in the Phillips Ranch area and gated communities along the 57 corridor. Multi-point systems cost more than a standard deadbolt swap and are always quoted as a written flat price per door before work begins. Call (910) 714-4287 to schedule an assessment.
If you need a lock changed in Pomona and want to know exactly who is coming to your door, call (910) 714-4287. You will reach a live person, get a written price before any work starts, and have the name and photo of your technician before the visit. That is how we work, and it is why Pomona keeps calling us back.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Pomona under The Threshold Standard.






