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 San Ramon
When a deadbolt stops turning or a key snaps off in the front door, waiting four hours for help isn’t an option. A residential locksmith in San Ramon typically charges $110 – $230 for a standard lockout and $25 – $45 per cylinder for San Ramon Rekey Locks services, with most jobs completed same day. Our crews reach neighborhoods like Dougherty Valley, Gale Ranch, and Twin Creeks in 30 – 45 minutes during normal hours. Call (409) 405-4485 and a live person answers, 24/7, no phone tree.
We know San Ramon. The housing here splits between 1980s tract homes off Crow Canyon and Alcosta Boulevard still running original builder-grade Kwikset and Schlage hardware, and newer Dougherty Valley construction where smart-lock integrations and HOA door standards are already in place. That means a locksmith rolling into San Ramon has to carry old pin kits and new smart-lock modules on the same truck. We do.
Every job we do for San Ramon homeowners gets a written price before anyone picks up a tool, a live trackable arrival time, and before-and-after photos. That’s The Relay Visibility Guarantee, and it’s stamped on every repair we finish.
Why Preston Locksmith & Security Is San Ramon’s Preferred Residential Locksmith Company
We’ve been doing Residential Locksmith work across the Tri-Valley since Preston Locksmith & Security opened in 2008. Homeowners from San Ramon keep calling us back because our tech shows up in a marked vehicle with a uniform, and the first thing they hand over is a written quote, not a bill.
Background checks run on every technician before they ever step onto a San Ramon porch. When a stranger in a plain van says they’re here to open your door, you should be able to verify who they are, what company sent them, and what the job will cost. We make all three checks easy. Kevin Yoon, who leads our team, built the dispatch process around one rule: if it can’t be verified, it doesn’t happen.
Response time to most San Ramon neighborhoods runs 30 – 45 minutes on weekdays, 40 – 60 minutes on nights and weekends. That’s not a promise we can’t keep. The live arrival tracking means you watch our tech drive toward your address in real time, so there’s no sitting on the porch wondering.
Our San Ramon customers also get the 365-Day Done Right Promise: if a repair we made fails within a year, we come back free. No charge, no argument, no re-quoting the job. That guarantee is written on the invoice, not implied in a handshake.
Apartment Locksmith in San Ramon
Apartment Locksmith work in San Ramon usually means one of three things: a unit lockout, a tenant turnover rekey, or a keypad-plus-deadbolt situation where the building door has electronic access but the unit door still runs on a physical key. The most common call we get from San Ramon apartment renters is a rekey after a roommate moves out or a landlord needs a fresh key set between tenants.
A standard apartment lock rekey in San Ramon runs $25 – $45 per cylinder. If the landlord wants a master key system that opens both the common area and the individual unit, expect $35 – $65 per cylinder depending on the keyway. We confirm the price in writing before work starts, and we handle the paperwork landlords need for key logs and tenant sign-offs.
We service buildings along Bollinger Canyon Road, Norris Canyon Road, and around San Ramon’s apartment clusters near the City Center and Iron Horse Trail. Landlords in San Ramon often call us between tenants when a key log is incomplete or a previous renter never returned a set of keys.
Tenant Turnover Rekeys
When a lease ends in San Ramon, the old tenant might have given out copies to dog walkers, partners, or neighbors. A full unit rekey resets control so only the new key set works. We can rekey most Schlage, Kwikset, and Baldwin cylinders on site in under 20 minutes per lock, and we’ll match the new unit key to any existing common-area or mailbox keys the landlord wants to keep.
Keypad Plus Deadbolt Setups
Many newer San Ramon apartments have an electronic keypad at the building entrance but a traditional keyed deadbolt and knob on the unit door. That’s a normal configuration, and we rekey the unit-side hardware without touching the building’s keypad system. If the property manager wants us to coordinate with the access-control provider, we’ll handle that too, in writing.
Lost Key Replacement in San Ramon
Lost Key Replacement in San Ramon usually means one of two paths: cutting a new key from the lock itself, or rekeying the cylinder so the lost key stops working altogether. If you know the lost key could be in the wrong hands around San Ramon, rekeying is the safer move. A straight key replacement runs $15 – $35 per key; rekeying runs $25 – $45 per cylinder.
We were called to a home in the Dougherty Valley area off Bollinger Canyon Road where an interior door lock had failed closed with a child’s bedroom on the other side. Our tech used non-destructive entry on the pin and tumbler cylinder, then rekeyed the whole house to a single Kwikset key so the family didn’t have to keep track of three old keys. Total job was under an hour and the homeowner watched the rekey happen at the door.
If you lose a key to an older San Ramon tract home still running builder locks, the lock itself is usually a basic five-pin Kwikset or Schlage. Cutting a replacement from the cylinder takes minutes. If you’ve lost the only key and want to raise security at the same time, we’ll quote you a rekey or a lock replacement from the same written estimate, your call.
Rekey After a Lost Key
Rekeying swaps the internal pins so the lost key no longer turns the lock. No new hardware needed. For San Ramon homeowners who gave a spare to a contractor, a house cleaner, or an ex, that means locking out everyone who ever held the old key at once, without replacing the whole lock.
Smart Lock Replacement
If you lose a physical key but the lock itself is worn or damaged, we can install a new smart lock and rekey it to match your existing key or set up fresh codes. Most San Ramon homes with smart locks run Kwikset Kevo, Schlage Encode, or Yale Assure models. We carry hardware and pin kits for all three.
Trusted Brands We Service in San Ramon
We stock pin kits and strike plates for Kwikset, Schlage, Medeco, Yale, and Baldwin hardware, which covers nearly every lock we touch in San Ramon. The 1980s homes around Twin Creeks and the Norris Canyon corridor mostly run Kwikset and Schlage. Newer Dougherty Valley builds lean toward Kwikset smart locks and Baldwin entry sets. We bring both old and new hardware on the truck, so a San Ramon customer doesn’t wait for a second trip because their lock predates our youngest tech.
Common Residential Locksmith Problems We See in San Ramon Homes
- Original builder locks getting sloppy after 30+ years. In San Ramon’s 1980s tract homes off Bollinger Canyon and Dougherty Road, the original Kwikset deadbolts often still turn but with enough play that the latch no longer seats cleanly. Rekeying usually fixes weak turning, but worn latch mechanisms sometimes need a $15 – $40 replacement.
- Smart locks installed without checking door alignment. Dougherty Valley homes are newer, but settling and seasonal temperature swings can shift the door frame enough that a smart lock’s motor stalls. We see this most in homes near the San Ramon hills where morning shade and afternoon heat move the door slab by a few millimeters.
- Mailbox and side gates keyed differently from the front door. San Ramon subdivisions often use one key for the front door and another for the side gate or community mailbox. We rekey everything to a single key when possible, which cuts down the number of keys on your ring and the places a lost key can compromise.
- Deadbolts drilled during lockouts. Some out-of-town locksmiths drill first instead of using non-destructive entry. That turns a $110 lockout into a $200+ lock replacement. In San Ramon’s tighter cul-de-sac neighborhoods, drilling also leaves a visible mess on the door that neighbors notice.
Pricing for Residential Locksmith in San Ramon, CA
Here’s what San Ramon homeowners actually pay us. A standard lockout runs $110 – $230 depending on lock type and time of day. Rekeying runs $25 – $45 per cylinder, with most whole-house rekeys of three to four locks landing between $120 and $200 total. Deadbolt installation runs $95 – $220 including hardware. Window lock installation runs $35 – $85 per window. Door reinforcement plates run $75 – $160 depending on the strike plate and frame work needed.
The quote we give on the phone is the price on the invoice. No trip fee added when we arrive, no fuel surcharge, no “high-security upgrade” line item invented on the doorstep. That bait-and-switch pattern is common in this trade, and we tell San Ramon homeowners the same thing every time: if a locksmith won’t put a final number in writing before the job, find another locksmith.
Call (409) 405-4485 for a free estimate. You’ll talk to a live person who can quote most San Ramon jobs on the spot.
We Also Serve Cities Near San Ramon
Beyond San Ramon, our crews cover Dublin, Danville, Hayward, and Pleasanton on the same dispatch system, usually within 45 – 60 minutes from a San Ramon call. Whether you’re in a new build near Gale Ranch or an older Danville neighborhood, the pricing structure, written quote, and Residential Locksmith standards stay the same. One phone number handles all of it: (409) 405-4485.
Serving San Ramon, CA - Our Local Coverage Area
We’re based in the San Ramon 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 San Ramon
No. The price we quote on the phone is the final price, with no trip fee, fuel surcharge, or arrival add-on. Any locksmith who gives you a cheap number and then adds fees once the tech is standing at your San Ramon address is running a well-known bait-pricing play. Call (409) 405-4485 for an honest quote.
Ask for identification, a uniform, a marked vehicle, and a written quote before any work starts. Our San Ramon techs carry ID, wear Preston Locksmith & Security uniforms, arrive in marked vehicles, and hand over a written price before touching a tool. Kevin Yoon’s dispatch process is built on verification: you know who is coming, what they look like, and when they’ll arrive before they knock. If a locksmith can’t show any of that, don’t unlock the door for them.
Yes. The keypad on the building common entrance is separate from your unit’s keyed deadbolt. We rekey just the unit cylinder, usually $25 – $45, without touching the building’s keypad or access system. If your San Ramon landlord needs a key log or a rekey receipt for their records, we provide that in writing at no extra charge.
If the deadbolt still throws and retracts smoothly, rekeying is usually enough and costs $25 – $45 per cylinder. If the latch is sloppy, the bolt sticks, or the door frame has been kicked at some point, Door Lock Repair in San Ramon or a replacement makes more sense. We’ll show you the wear on your San Ramon lock before recommending anything, and the recommendation comes with a written price either way. Call (409) 405-4485 for an estimate.
In most San Ramon subdivisions, especially in Dougherty Valley, a smart lock on your own front door doesn’t need HOA approval. What can trigger a notice is a smart lock that changes the exterior door finish, requires a different door slab, or adds a deadbolt where one didn’t exist. We install Kwikset, Schlage Encode, and Yale Assure smart locks with the existing footprint when possible, so the door hardware stays HOA-quiet. Call (409) 405-4485 and we’ll tell you plainly what your specific San Ramon HOA likely allows.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving San Ramon since 2008.






