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 Newark
You’re locked out on a Tuesday night in Newark, standing on your own porch on Cedar Boulevard, and the key turns but the deadbolt doesn’t. Or you just bought a 1962 ranch near Newark Community Park and you’re wondering how many old keys are still floating around out there. Either way, you need a locksmith who answers the phone, gives you a real price, and shows up when they say they will. That’s what we do. Preston Locksmith & Security handles Residential Locksmith work across all of Newark, and we answer live at (409) 405-4485, 24 hours a day, no voicemail trees.
Newark isn’t a huge city, but it’s dense in a way that matters for locksmith work. We know the difference between a 1950s Eichler-inspired tract home on the west side and a newer two-story infill project near the Dumbarton shoreline. That means we don’t send a technician who has to circle the block three times figuring out where to park, and we don’t quote you a price that changes once the door is open.
Why Preston Locksmith & Security Is Newark’s Preferred Residential Locksmith Company
We’ve been doing residential lock work since 2008, and Newark has always been part of our core service area. Homeowners here tend to be practical about their money. They want to know the price before the work starts, not after. That’s exactly how we operate. Every job, from a simple lockout on Thornton Avenue to a full rekey on a four-bedroom house near the Civic Center, gets a written price before a single tool comes out of the bag.
Our technicians are background-checked and arrive in uniform. You’ll see a live, trackable arrival time on your phone, so you’re not waiting through a four-hour window. When the tech knocks, you already know his name, what he looks like, and when he was supposed to get there. Newark has a lot of tight residential courts where neighbors watch unfamiliar vans. We send someone who looks like he belongs there, because he does.
Each location in the Relay Home Co. family is independently owned and operated, and ours is led by Kevin Yoon. Kevin built this shop on a simple rule: the price we quote on the phone is the price on the invoice. Full stop. No “door is seized” surcharge added at your front step on National Avenue. No “that’s a security lock, that’ll be extra” after the fact. If we can’t do the job for what we said, we tell you before we dispatch anyone.
Lost Key Replacement in Newark
Lost Key Replacement in Newark is one of the most common calls we get, and it usually doesn’t mean changing the whole lock. When a homeowner loses a key, the right move is often a rekey, which means we pull the cylinder, swap the internal pins, and cut a new key that works. Old keys stop working immediately. The lock itself stays in place. In Newark, a standard rekey for a Schlage or Kwikset cylinder typically runs $25 – $45 per lock, and we can usually finish three or four locks in under an hour. If you want all your doors on one key, that’s a keyed-alike job, and we’ll quote it the same way: a written number before we start.
When a Homeowner Should Rekey Instead of Replace
Most 1950s and 1960s homes in Newark still have solid brass or steel mortise locks that are built better than half the new hardware at the big-box store. Rekeying preserves that hardware and costs a fraction of a full replacement. We’ll be straight with you: if the lock itself is worn out, loose, or rusted from decades of Bay Area salt air, we’ll say so. But if it just needs new pins, we won’t sell you a new deadbolt you don’t need.
What “Non-Destructive Entry” Actually Means
When you’ve lost a key and need to get back into your Newark home, we try non-destructive entry first. That means picking or shimming the lock open without drilling it. Most standard residential locks can be opened this way, including the 1950s Schlage pin and tumbler deadbolts that are all over the city. Drilling is a last resort. A drilled lock has to be replaced, and that turns a $30 rekey into a $150-plus job. We’ll tell you before we drill, and we’ll tell you exactly what it’ll cost.
House Key Locksmith in Newark
House Key Locksmith in Newark work covers everything from duplicate keys to full home rekeys to keyed-alike conversions. The most common scenario we see is a homeowner who just moved into a house near Newark Memorial High School and wants to know who else has a key. The honest answer is: you probably don’t know. Previous owners, cleaners, contractors, dog walkers, neighbors who fed the cat. A rekey solves that. In Newark, a full home rekey for a typical three-bedroom house with two exterior doors plus a garage door runs $75 – $140 total, depending on how many cylinders are involved and whether they’re all the same brand.
One-Key Convenience for Older Newark Homes
Plenty of Newark homes have a front door that takes one key, a back door that takes another, and a garage access door with yet another. That’s three keys on your ring for one house. We can key all of those locks alike, usually in a single visit, using the existing hardware. For Kwikset and Schlage locks, it’s a straightforward pin swap. For older mortise cylinders with no visible brand marking, we’ll identify the keyway by hand and cut the new key on the spot.
When to Cut New Keys vs. Rekey the Lock
If your key works but is worn down or bent, we’ll cut a new one from the code or by tracing the original. That’s a $5 – $10 job per key in Newark. If you have a working key but want to block out everyone who ever had a copy, you need a rekey, not just new keys. Copying a key doesn’t stop the old copies from working. Rekeying does.
Trusted Brands We Service in Newark
Our technicians are trained and equipped to service Medeco, Schlage, Kwikset, and Abloy hardware, among others. What that means for a Newark homeowner is that when you call us about a deadbolt that won’t turn, we don’t have to guess or order parts sight unseen. We carry common pins, springs, and cylinders for Schlage and Kwikset on the van, which covers the majority of locks in Newark’s housing stock. For Medeco and Abloy high-security systems, we’ll schedule the work and handle the key control paperwork properly, because those brands require authorized key records. No shortcuts.
Common Residential Locksmith Problems We See in Newark Homes
- 1950s mortise locks with no brand markings. These are all over the older tracts near the Civic Center and along Thornton Avenue. The cylinders often predate modern keyways, which means a generic replacement from the hardware store won’t fit. We identify the keyway by hand and rekey the original cylinder, which preserves the lock body and costs less than a retrofit.
- Salt air corrosion on shoreline-area locks. Homes closer to the Don Edwards Wildlife Refuge and the Dumbarton shoreline get more salt in the air than the rest of the Bay Area already does. Exterior deadbolts and striker plates corrode faster there. We see rusted set screws and seized tailpieces on a regular basis. A little graphite or silicone spray once a year helps, but if the cylinder is already seized, it usually needs to come out and get cleaned or replaced.
- Misaligned strike plates on settling slab foundations. A lot of Newark’s older homes sit on slab foundations that settle over decades. When the door frame shifts even a millimeter or two, the deadbolt no longer lines up with the strike plate, and you get that grinding resistance when you turn the key. Sometimes it’s a simple plate adjustment. Sometimes the door itself needs to be rehung. We’ll tell you which one it is before we touch it.
- Doors that were never rekeyed after a change in occupancy. Whether it’s a rental turnover near Ohlone College or a sale in a 1960s neighborhood off Jarvis Avenue, a surprising number of homes still have the original keys from decades ago in circulation. We strongly recommend a rekey every time occupancy changes, and we’ll key all the exterior doors alike so you’re walking around with one key, not four.
Pricing for Residential Locksmith in Newark, CA
Here are honest numbers for Newark, because you deserve to know before you call.
- Rekey a standard Schlage or Kwikset cylinder: $25 – $45 per lock
- Full home rekey (2 – 3 exterior doors, garage access, keyed alike): $75 – $140
- Non-destructive lockout entry: $75 – $125 depending on lock type and time of day
- Deadbolt installation: $45 – $90 per lock plus the hardware, which we’ll quote before we order it
- Lock change, standard knob or deadbolt: $60 – $120 per door, including labor and standard hardware
- Duplicate keys cut on-site: $5 – $10 per key
The price we quote on the phone is the price on your invoice. No “it’s a security lock” add-on at the door. No “we had to use special tools” surcharge. If something changes, we call you first and get your okay in writing. Estimates are free. Call (409) 405-4485 and you’ll get a live person, not a recording.
We Also Serve Cities Near Newark
If you live just outside Newark, we still have you covered. We serve Fremont to the north, Union City to the east, and Palo Alto and Sunnyvale across the bay. The same pricing rules apply everywhere we go: a written quote before we start, a live trackable arrival time, and a uniformed, background-checked technician who shows up ready to work. Residential Locksmith is what we do every day, and we treat every call like it’s our own front door.
Serving Newark, CA - Our Local Coverage Area
We’re based in the Newark 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 Newark
You’ll know before he even pulls up. We send a live, trackable arrival time to your phone, so you can watch the van move toward your house. The technician arrives in a Preston Locksmith & Security uniform and carries a company ID. If anything doesn’t match, he won’t take offense if you call the office to confirm. We’d rather you double-check than let a stranger into your home. Transparency is the whole point of what we do. Call (409) 405-4485 and ask for the tech’s name before he arrives if you want extra certainty.
We remove the lock cylinder, swap the internal pins to match a new key, and put the cylinder back in. The old key stops working immediately. You keep your existing hardware, which is usually better quality than anything cheap you’d buy to replace it. In Newark, where 1950s mortise locks and modern deadbolts sit side by side on the same street, rekeying is often the smartest move because it preserves original hardware that fits the door properly. A standard rekey runs $25 – $45 per lock, and we’ll have it done before you finish your coffee.
In most cases, yes. Standard pin and tumbler locks, including old Schlage and Kwikset deadbolts common in Newark, can usually be picked or shimmed open without damage. We always try non-destructive entry first. Drilling is a last resort because it destroys the cylinder and turns a cheap job into an expensive one. If we do need to drill, we’ll stop and tell you the cost before we put a single hole in your door. No surprises.
You can, and a lot of Newark homeowners do. But 1950s doors are thinner than modern ones, and some have narrow backset measurements that limit which smart locks fit. The mortise locks on those older Eichler-style homes also don’t have standard prep holes, so a smart deadbolt install can require boring a new hole and filling the old mortise pocket. We’ve done plenty of these installs, and we’ll tell you honestly whether your door can take the lock you want or whether you’d be better off with a high-security mechanical deadbolt. Either way, the quote comes in writing before we order anything.
No. The estimate is free, and the price we quote on the phone is the price on the invoice. We don’t charge a “trip fee” that turns out to be a surprise charge when the tech arrives. We tell you the price range for the job you’re describing, and we confirm a written price before any work begins. If we get to your house and things are different than described, we’ll call you, explain what changed, and get your approval before we touch anything. The full price is always quoted before anyone is dispatched. Call (409) 405-4485 for an exact quote.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving Newark since 2008.






