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 Residential Locksmith Across Antioch
If you’re locked out, need a lock changed, or want your Antioch home rekeyed, Dunmore Locksmith gets there fast and does the job right the first time. Rekeying a standard knob lock in Antioch typically runs $65 to $120, and a full deadbolt replacement usually lands between $140 and $280 including the hardware. We answer the phone with a live person 24 hours a day, and our uniformed technicians arrive with a photo ID badge and a written price before any work starts. Call (910) 714-4287 and you’ll know exactly who’s coming to your door before you open it.
Antioch’s housing stock creates lock problems most cities don’t deal with at this scale. Thousands of nearly identical 1990s and 2000s tract homes along the Lone Tree corridor and eastern neighborhoods rolled off the line with builder-grade Kwikset knob-and-deadbolt combos. Those locks are now 20 to 30 years old. They fail in clusters. And because so many share the same original spec, a builder key from one house can still turn the deadbolt on another if it was never rekeyed after handover. That’s a security gap, not just a maintenance issue, and it’s one our Residential Locksmith team sees weekly across Antioch.
Why Dunmore Locksmith Is Antioch’s Preferred Residential Locksmith Company
Dunmore Locksmith is the Threshold Group member business serving Antioch and the surrounding Contra Costa communities. We’ve been doing this since 2007, and the name itself tells you what we’re about: Dunmore comes from old words for a great fort, a stronghold built to keep what is inside safe. That’s the standard we apply to every lock, every door, and every home we touch in Antioch.
Homeowners here consistently tell us they chose us for one reason above all: they know who’s coming before they turn the handle. Every Dunmore technician is background-checked and identity-verified under the Threshold Standard, then sent to you by name and photo before the visit. The same technician shows a photo ID badge at your door. If someone shows up you weren’t told to expect, that visit is covered at no charge. No exceptions.
We also back every repair with the 365-Day Done Right Promise. The guarantee is written on every job. If the repair fails within a full year, we return at no charge. That’s not a vague satisfaction pledge. It’s a written commitment.
Apartment Locksmith in Antioch
Apartment Locksmith work in Antioch has its own rhythm, and it runs steady along the Lone Tree Way and Somersville Road rental corridors. High tenant turnover, driven by Bay Area renters relocating from more expensive cities, means landlords rekey on nearly every vacancy cycle. Our crews handle multi-unit rekeying packages regularly here, which keeps turnarounds quick and pricing predictable.
Vacancy Rekey Packages
When a tenant moves out, the landlord can’t know how many keys are floating around. We rekey every lock on the unit to a fresh pin-and-tumbler set so old keys are worthless. Typical per-unit rekeying in Antioch apartments runs $65 to $120 per lock, with volume pricing for multi-unit buildings. We provide a written rekey certificate for property files, which many Antioch landlords now require before a new lease is signed.
Lockouts Without the Landlord
Locked out of an Antioch apartment and the landlord isn’t answering? We can usually gain entry and rekey the same visit if you’re a listed tenant with proof of residency. A standard residential lockout in Antioch runs $75 to $150. We verify tenancy before any non-destructive entry, which protects everyone involved.
Lost Key Replacement in Antioch
Lost Key Replacement in Antioch usually means one of two things: making a new key from an existing copy, or replacing the cylinder entirely when no key remains. If you still have a working key, cutting a duplicate in Antioch runs $5 to $15 for standard keys. If you’ve lost all copies, the cylinder itself needs replacing or rekeying, which typically runs $65 to $120 per lock.
Rekeying After a Lost Key
When a key disappears, replacing it isn’t enough. The lost key still works. Rekeying changes the internal pins so every old key, every copy, every key you forgot you handed to a neighbor is dead. For Antioch homeowners, this is the single most important security step after a lost key, and it’s the one most often skipped.
Key Replacement for High-Security Locks
Some Antioch homeowners upgraded to Schlage or Medeco high-security cylinders, which use restricted keyways. These need specific blanks and sometimes a card-of-authority to duplicate. We stock common Schlage and Kwikset blanks locally, so most standard key replacements in Antioch are done same-day. High-security Medeco cuts may take an extra day to source.
Trusted Brands We Service in Antioch
Dunmore is factory-authorized to install and service Schlage, Kwikset, Medeco, Yale, Baldwin, Mul-T-Lock, Sargent, and Abloy hardware. What that means for Antioch homeowners is simple: we stock the common Schlage and Kwikset parts locally, so deadbolt replacements and rekey jobs don’t wait on a parts shipment. For older bungalows near downtown Antioch, where mortise locks and specialty cylinders from Medeco or Yale show up often, we keep the less common blanks and components on hand too. When you call for a lock repair in Antioch, the part for your job is usually already in the van.
Common Residential Locksmith Problems We See in Antioch Homes
- Builder keys still working. Thousands of 1990s and 2000s tract homes along the Lone Tree corridor were never rekeyed after handover. If your key has a five-pin Kwikset bow and no brand stamp, there’s a real chance the original builder key pattern still operates your deadbolt. The fix is a $65 to $120 rekey, not a full replacement.
- Deadbolts that bind in summer. Antioch regularly runs past 100°F in summer, well inland from the marine-fog buffer. Wooden door frames and metal strike plates expand enough to throw deadbolt alignment off. If your key only turns halfway in August but works fine in January, the lock isn’t broken. The frame has shifted. We correct the strike alignment and re-lubricate the cylinder.
- Corroded zinc-alloy builder hardware. Delta-influenced humidity in fall and spring corrodes exterior locksets faster here than in drier Central Valley cities. The zinc-alloy internals in builder-grade Kwikset knobs are especially vulnerable. If your exterior lock feels gritty or the key sticks on entry, the mechanism is likely corroding from the inside out.
- Smart locks that don’t fit. Older bungalows near downtown Antioch often have pre-1960s mortise locks or narrow backsets. A modern smart lock retrofit on these doors needs a compatibility check first. Skipping it leaves homeowners with a deadbolt that won’t seat or a keypad that binds against the strike plate.
Pricing for Residential Locksmith in Antioch, CA
You should know the numbers before you call. Here’s what typical jobs cost in Antioch right now. A standard lock change or deadbolt replacement runs $140 to $280 including new hardware. Rekeying a knob or deadbolt runs $65 to $120 per lock. A residential lockout usually runs $75 to $150. Window lock installation or replacement runs $45 to $95 per window. Door reinforcement, including a Grade 1 strike plate and longer screws, runs $60 to $110 per door. The phone quote we give you is the price on your invoice. There is no call-out surcharge added when the technician arrives. Call (910) 714-4287 for a free estimate before anyone is dispatched.
Why Antioch Is Different: Same-Spec Homes, Shared Keys, Aging Hardware
Antioch’s 1990s and 2000s tract-home boom filled the Lone Tree corridor and eastern neighborhoods with thousands of homes built to the same spec. Same floor plans. Same doors. Same builder-grade Kwikset knob-and-deadbolt sets. And here’s the problem no neighboring city shares at this scale: when the builder handed over keys at closing in 2002, many homeowners simply never rekeyed. A single builder-key pattern from one address can still open the deadbolt on another home if it was never changed. It’s a real vulnerability that homeowners rarely discover until a neighbor’s key accidentally works, or a break-in happens with no sign of forced entry.
We saw it ourselves on Buckeye Court in the Lone Tree corridor. A homeowner’s builder-grade Kwikset deadbolt had grown so stiff the key would only turn halfway. After a non-destructive entry, we found the original builder key cylinder had never been rekeyed since the 2002 handover. Our technician rekeyed it to a fresh pin-and-tumbler set, upgraded the strike plate to ANSI Grade 1 spec, and installed a Schlage smart lock that tied into the existing keypad entry system. The family finally retired the builder keys for good.
The climate compounds the problem. Antioch sits inland past the marine-fog buffer, so summer heat above 100°F expands stucco-and-frame door openings. Deadbolts bind. Strike plates shift. Then Delta-influenced humidity corrodes the zinc-alloy hardware that was only rated for about 10 years of service anyway. A simple rekey without addressing frame expansion leaves the lock just as hard to turn. We address both in every job.
We Also Serve Cities Near Antioch
Our Antioch crews also serve homes in Oakley, Pittsburg, Clayton, and Brentwood. If you own a rental along the Somersville Road corridor in Antioch or a tract home in Oakley built in the same 1990s wave, the same rekey-and-upgrade issues apply. Same hardware, same climate, same fix. Call us and we’ll tell you what’s ahead.
Serving Antioch, CA - Our Local Coverage Area
We’re based in the Antioch 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 Residential Locksmith in Antioch
Look at the key. If it’s a five-pin Kwikset key with no brand stamp and the bow is plain brass or nickel, there’s a strong chance it’s the original builder key from handover. Never rekeyed. The fix is a straightforward $65 to $120 rekey that kills every old key. Call (910) 714-4287 and we’ll check the cylinder pattern and tell you on the spot.
Summer heat expands your door frame. Antioch regularly runs past 100°F inland, and wooden frames and metal strike plates shift enough to bind the deadbolt. The fix is usually a strike-plate realignment and cylinder lubrication, not a new lock. We see it on the same homes every August. Call (910) 714-4287 and we’ll diagnose it over the phone.
Yes, but it requires a compatibility check first. Older pre-1960s bungalows near downtown Antioch often have narrow backsets or non-standard keyways that standard smart locks don’t fit. We measure the backset, confirm the cylinder type, and recommend a compatible Schlage or Kwikset smart deadbolt before any cuts are made. Call (910) 714-4287 and we’ll walk you through what will and won’t fit your door.
If you’re a listed tenant with proof of residency, yes. We can rekey the unit and provide a rekey certificate for your landlord’s files. Many Antioch landlords along the Somersville Road corridor now require rekeying between tenants anyway, so it often works out to everyone’s benefit. Call (910) 714-4287 and we’ll walk you through what documentation we need.
A rekey changes the internal pins so your old keys no longer work. The existing lock stays in place. It costs $65 to $120 per lock. Replacing the deadbolt swaps the entire mechanism and costs $140 to $280 including hardware. For most Antioch homes where the builder key is the problem, a rekey is enough. If the deadbolt is corroded or binding beyond repair, replacement is the answer. Call (910) 714-4287 and we’ll tell you which one you actually need before any work starts.
Call Dunmore Locksmith for Residential Locksmith Service in Antioch
When you need a lock changed, a key replaced, or a deadbolt that’s finally stopped fighting you, call (910) 714-4287. We answer live, 24 hours a day. We send you the technician’s name and photo before they arrive. The price goes in writing before any work starts, and it’s the same price on your invoice. Every job carries the 365-Day Done Right Promise. If it’s not done right, we return at no charge. Call us and know exactly who’s coming to your door.
Written by Perry Osgood, Owner at Dunmore Locksmith, serving Antioch since the brand’s founding under Threshold Group in 2007.