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 Foster City
A residential locksmith call in Foster City usually comes down to three things: how fast we get there, what it costs, and whether the price holds once the work starts. We answer with a live person, 24/7, and you get a written price before a single tool leaves the bag. For most Foster City neighborhoods, including Isle Cove, Marlin Cove, and Parkside, we’re typically at your door in under 45 minutes. Call (409) 405-4485 and you’ll know the full scope and the real number before anyone is dispatched.
Why Preston Locksmith & Security Is Foster City’s Preferred Residential Locksmith Company
Foster City homeowners call us because we do something most locksmiths won’t: we put the price in writing before the truck moves. No “it’ll be more once I see it.” No surprise line items after the lock is open. The price quoted on the phone is the price on the invoice, and that’s covered by our 365-Day Done Right Promise. If a repair fails, we come back and fix it free. No charge, no argument, no re-quoting.
We’re part of the Relay Home Co. family, founded in 2008, and this location is independently owned and operated. Kevin Yoon leads the team, and every technician who shows up at your Foster City door is background-checked and in uniform. You’ll know who’s coming, what they look like, and exactly when they’ll arrive. The Relay Visibility Guarantee means you get a live trackable arrival time, before-and-after photos of the work, and a written guarantee on every repair. That’s not a marketing line. It’s stamped on the paperwork.
Foster City has a specific lock problem that most of the Bay Area doesn’t deal with, and we know it cold. More on that below.
Locksmith Key Replacement in Foster City
Locksmith Key Replacement in Foster City typically runs $95 to $190 for a standard Schlage or Kwikset key cut and programmed, depending on whether we’re copying an existing key, cutting from a code, or generating a fresh set after a rekey. If you’ve lost every copy of a key, we can cut a new one from the lock itself, and that’s a common call we get from homeowners on streets like Edgewater Boulevard and in the Parkside neighborhood.
Key replacement isn’t just about cutting metal. It’s about key control. If you bought a Foster City home and never rekeyed, the previous owner’s spare key, the house sitter’s key, the contractor’s key: they all still work. We cut new keys and rekey the cylinder so the old ones stop working entirely.
When a Foster City homeowner calls for key replacement
Most calls start with a lost key or a key that snapped in a deadbolt. Foster City’s salt-laden air, especially on lagoon-side streets, weakens brass keys over time. A key that’s been on the same ring for years can snap on a Tuesday morning. We cut a duplicate from the lock, confirm the cylinder turns cleanly, and check whether the pins are corroded enough to warrant a rekey while we’re there. The written quote covers both before we touch the door.
What the job actually involves
We measure the keyway, cut the new key to the existing pin depth, and test it in both the deadbolt and the handle. If the cylinder is worn or the key sticks, we’ll tell you the rekey price upfront: $25 to $45 per cylinder is typical for Foster City homes, written price confirmed before we start. No new hardware needed unless the cylinder itself is shot. If it is, you’ll see the replacement price in writing before we swap it.
Smart Lock Installation in Foster City
Smart Lock Installation in Foster City runs $165 to $390, including the labor to fit, align, and program the lock to your keypad, app, or deadbolt setup. The spread depends on what’s on your door now. A standard Kwikset or Schlage smart deadbolt swaps onto most Foster City doors in about 45 minutes. If you’ve got an older mortise lock or an offset bolt pattern, the labor goes up because we’re modifying the door prep, not just screwing in a new unit.
Foster City homes built in the 1960s and 1970s often have narrower door preps than today’s smart locks expect. We bore and chisel when needed, but you’ll know the full labor number before we start. No hidden prep charge, no “the door was harder than expected” add-on.
Smart locks that hold up to lagoon air
Salt air eats cheap electronics. We recommend smart locks with sealed keyways and corrosion-resistant cylinders for Foster City homes on Isle Cove, Marlin Cove, or any street within a block of the lagoons. Schlage Encode and Kwikset Halo are workhorses. For high-security setups, a Medeco smart cylinder with a motorized deadbolt is overkill for most homes, but it’s an option. We’ll quote the difference in writing and let you decide.
What we test before we leave
Battery level, app pairing, keypad feedback, and the physical key override. On a Foster City door, the physical override matters more than people think. If the motor fails and you’ve got a corroded backup cylinder, you’re locked out with a dead smart lock. We check both. We also align the strike plate so the deadbolt throws cleanly without rubbing. A smart lock that grinds against the frame burns batteries and fails early.
Trusted Brands We Service in Foster City
Our Foster City trucks carry common Schlage, Kwikset, and Medeco parts so we can do most repairs in one trip. If you’ve got a Baldwin or Abloy deadbolt that’s fighting you, we service those too. The salt-air problem on lagoon-side streets means we keep extra cylinders and pin kits on hand specifically for Foster City work. Corroded locks don’t wait for a parts order, and neither do we. Kevin Yoon’s team trains on premium and everyday hardware so we can fix what’s on your door, not upsell you into a replacement you didn’t ask for.
Common Residential Locksmith Problems We See in Foster City Homes
- Seized cylinders from lagoon salt air. The key turns halfway and stops. This is the most common call we get from Isle Cove, Marlin Cove, and the waterfront side of Parkside. Non-destructive entry followed by a cylinder swap and rekey usually solves it without drilling.
- Old keys still circulating after a sale or tenant turnover. A new owner moves into Foster City, the previous owner’s key is still out there, and nobody flagged it. Rekeying every exterior cylinder at move-in closes that gap for $25 to $45 per cylinder.
- Strike plates that never got a long screw. Foster City doors in older homes often have strike plates held by half-inch screws. One solid kick and the door opens. We reinforce with 3-inch screws into the stud, which is the single cheapest security upgrade you can do.
- Deadbolts that weren’t installed for the climate. A lock that works fine in San Mateo can seize up a block from the lagoon. Anodized or sealed hardware matters here. We carry brands built for coastal air and we’ll tell you if what’s on your door is going to need attention again in a year.
Pricing for Residential Locksmith in Foster City, CA
Here are the real numbers we quote on Foster City calls. Lockout service runs $85 to $145, including non-destructive entry. Rekeying runs $25 to $45 per cylinder. A lock change runs $95 to $185 depending on the hardware. Deadbolt installation runs $120 to $230. Window locks run $35 to $75 per lock installed. Door reinforcement runs $135 to $275, including a reinforced strike plate and longer screws. Smart lock installation runs $165 to $390 depending on door prep. These are all-in prices, written before we start. No dispatch surcharge, no arrival fee added on. The quote you get on the phone from (409) 405-4485 is the price on the invoice, period.
We Also Serve Cities Near Foster City
Most of our Foster City calls come from Isle Cove, Marlin Cove, and Parkside, but our Residential Locksmith team also covers homeowners in Los Angeles, San Diego, San Jose, and San Francisco. If you’re right at the city line or you own a rental in one of those cities and live in another, call and we’ll route the nearest technician. Same written-price guarantee, same live answer on the phone. Our team knows Foster City well, and we dispatch locally, not from a call center three states away.
Serving Foster City, CA - Our Local Coverage Area
We’re based in the Foster City 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 Foster City
You’ll see a live arrival time with the tech’s name, photo, and vehicle description before they arrive, and they’ll be in a Preston Locksmith & Security uniform. The price was already agreed in writing before dispatch. If anything on the van or the person doesn’t match, don’t open the door and call us back at (409) 405-4485. Call for a free estimate and we’ll walk you through exactly what to expect before we send anyone out.
Most of the time it can be rekeyed. Salt air corrodes the pins and springs inside the cylinder, and a rekey swaps those internal components for fresh ones, no new hardware needed. If the cylinder body itself is pitted or the keyway is deformed, we’ll quote a new cylinder in writing before the work. On Isle Cove and Marlin Cove doors, rekeying runs $25 to $45 per cylinder. Call (409) 405-4485 and describe what the key does, and we’ll tell you which path you’re likely on.
Yes. The price you get on the phone is the written price, and it’s the invoice price. No dispatch fee added on arrival, no rekey line item that wasn’t discussed, no “the lock was rusted so it costs more.” If a Foster City tech finds a real problem beyond the scope, we stop, show you, and quote the addition in writing before touching it. You approve it or you don’t. Call (409) 405-4485 for an exact quote; estimates are free.
Usually yes, but it’s more labor. Older Foster City homes, especially in Parkside and near the original 1960s builds, often have mortise locks that need the door re-bored to fit a modern smart deadbolt. That labor is included in the $165 to $390 range unless the door needs significant structural work, which we’d quote separately before starting. In many cases, a smart lock retrofit with a motorized cylinder keeps the existing mortise body and adds keypad entry without carving up the door.
Because a rekey physically replaces the pins inside the cylinder so the old key no longer lines up. We do every exterior cylinder at the same time, keyed alike to one new key. If you want documented key control, like a system where you know exactly how many keys exist, ask us about a master key system. That’s a common request from Foster City landlords with multiple units. Call (409) 405-4485 and we’ll quote the whole property, not just one door.
We got a call from a homeowner on Marlin Cove whose Schlage deadbolt had seized after years of lagoon-side salt air, the key would turn halfway and stop. Rather than break out a drill, our tech used non-destructive entry to get them in, then swapped the corroded lock cylinder and rekeyed the pin and tumbler to a fresh key set. The homeowner was quoted the full scope before we rolled, and the final invoice matched it line for line.
If you need a residential locksmith in Foster City, call (409) 405-4485. You’ll get a live person, a written price, and a real arrival time. No drill-first surprises, no bait pricing, no invoice that swells at the door.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving Foster City and the surrounding Bay Area since 2008.