Smart locks
House lockouts
Re-keying
Deadbolt upgrades
Schlage
Kwikset
Car keys & fobsNon-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.
Get your free estimateLocksmith in Foster City, CA
Foster City locksmith work centers on rekeying homes built between the late 1960s and 1980s, many of which still carry their original builder-grade entry locksets and aging lagoon-facing sliding doors. Salt air off the Bay corrodes exterior hardware faster than inland cities, so worn cylinders and sticky sliders are routine calls here. Citadel Locksmith has served Foster City since 2011, and you can reach us at (833) 589-8078 for a free estimate.
Why Foster City Homes Are Different
Foster City sits on reclaimed tidal marsh, a master-planned community engineered around the lagoon system. That single fact shapes nearly every locksmith job here. Most of the housing stock in the 94404 ZIP was built in a narrow window from the late 1960s through the 1980s, meaning we see the same three or four original lockset styles again and again. Those builder-grade Schlage and Kwikset entry sets were fine for their era, but 40 to 50 years of turning, salt exposure, and lagoon humidity leaves them loose, stiff, or simply worn past reliable operation. Sliding-glass patio doors face the water on a huge share of properties, and those handles and mortise locks take the brunt of wind-driven rain and fog. Homes with private docks add another layer: waterside gates and dock-door hardware sit in constant salt air and corrode several times faster than street-facing locks. Homeowners here often ask for every exterior lock on the property keyed alike, since a single house may have a front door, two sliders, a side gate, and a dock gate all on different keys.
Styles & brands we work with
Our Main Foster City Services
Foster City homeowners call us most often for two things: car key replacement when a transponder key is lost or dead, and emergency lockout response when a door slams shut at the worst possible time.
Car Key Replacement in Foster City
Losing a car key in Foster City usually means a transponder or fob-equipped key, not a simple metal blank. Many residents park in attached garages, but driveway and street parking near the lagoon means a lost key can leave a car exposed overnight. We cut and program replacement keys on site, including transponder and remote-head keys, at a fraction of dealership pricing and without a tow. For the full breakdown of what we cover and what it costs in Foster City, see our dedicated Car Key Replacement in Foster City page.
Emergency Locksmith in Foster City
A lockout on a foggy Foster City evening is not the time to experiment with a credit card on a door that has already seen 40 years of Bay weather. We arrive with the right tools for the lock style, whether it’s a corroded Kwikset on a 1970s tract home or a modern smart lock on a lagoon-front rebuild. If the lock is damaged after entry, we can rekey or replace it on the spot. Read the full scope and response details on our Emergency Locksmith in Foster City page.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Rekey Locks in Foster City
Rekeying is the fastest way to take back control of who holds a key. In Foster City, where entire neighborhoods were built in the same decade with the same lock hardware, we routinely rekey homes that have accumulated keys across multiple owners, tenants, contractors, and pet sitters over 40 plus years. Salt air accelerates cylinder wear, so rekeying often pairs with light cleaning and lubrication of the lock body, and many homeowners choose to have all exterior doors and gates keyed alike in one visit. That is the core of our Rekey Locks service, and it changes which keys work without replacing the hardware itself.
Lock Rekey
Signs you need it
You have moved into a Foster City home and cannot account for every key a previous owner, tenant, or contractor may still hold.
What it costs in Foster City
Lock rekeying in Foster City typically runs $75 to $160 when we come to you, with additional cylinders priced per lock.
How we do it
We disassemble the cylinder, swap the internal pins to match a new key, and test the lock for smooth operation before we leave.
Keyed Alike
Signs you need it
Your Foster City home has a front door, sliding doors, a side gate, and possibly a dock gate all on separate keys, and you want one key for everything.
What it costs in Foster City
Keying multiple locks alike in Foster City starts at $75 to $160 for the first cylinder and a smaller per-cylinder fee for each additional lock in the same visit.
How we do it
We set each cylinder to the same key code, so a single key operates the front door, sliders, gates, and any other lock you choose.
What Rekey Locks Costs in Foster City
| Item | Typical range in Foster City |
|---|---|
| Service call + first cylinder rekeyed | $75 – $160 |
| Each additional cylinder, same visit | $20 – $35 per cylinder |
| Keyed-alike setup (house, sliders, gates) | $75 – $160 first cylinder + per-cylinder fee |
Salt air corrosion on lagoon-facing hardware can add time if the cylinder needs extra cleaning to accept the new pins, but that is quoted on the phone before we dispatch. The price on the invoice matches the price on the quote.
How long does rekeying take in Foster City?
Most Foster City homes are rekeyed in 20 to 40 minutes for the first lock, with each additional cylinder taking about 10 minutes. Keying every exterior door and gate alike typically runs one to two hours on site.
Do I need to replace my locks or just rekey them?
If the hardware still turns smoothly, rekeying is enough, and it is cheaper than replacing. If salt air has corroded the cylinder or the finish is failing on lagoon-facing doors, we will tell you honestly whether replacement makes more sense.
Brands We Service in Foster City
We work across the brands serious about security, and that matters in Foster City where original Kwikset and Schlage hardware is common and newer lagoon-front rebuilds lean toward Medeco, Yale, and Baldwin. We stock common pins and parts for these lines on the van, so most rekeys and replacements finish same-day. See our brands page for the full roster.
Pricing for Locksmith in Foster City, CA
| Service | Typical range in Foster City |
|---|---|
| Rekey first cylinder (service call included) | $75 – $160 |
| Each additional cylinder rekeyed, same visit | $20 – $35 per cylinder |
| Keyed-alike setup for multiple locks | $75 – $160 first cylinder + per-cylinder fee |
| Car key replacement (transponder, program on site) | $150 – $450 per key |
| Emergency lockout, standard door | $85 – $180 |
| Emergency lockout, after-hours or weekend | $120 – $250 |
Lagoon-facing hardware with heavy corrosion can add labor time, and that is the main price variable on Foster City jobs. What it will not do is surprise you: we quote the full price on the phone before anyone is dispatched, and there is no call-out surcharge added on arrival.
Neighborhoods We Serve in Foster City
We cover all of Foster City in the 94404 ZIP, from the lagoon-front streets to the inland tracts. No area of Foster City is more than about 10 minutes from end to end, so response is quick regardless of which side of the lagoon you are on.
- Dolphin Bay
- Isle Cove
- Whale Cove
- Beach Park Boulevard area
- Edgewater Place
Service Area – Cities Near Foster City
Citadel Locksmith handles rekeying, emergency lockouts, and car key replacement across the bayside peninsula. In addition to Foster City itself, we regularly serve nearby Redwood Shores, CA, San Mateo, CA, Belmont, CA, and Highlands-Baywood Park, CA.
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 Locksmith in Foster City
Most Foster City calls are reached within 20 to 30 minutes because the city is compact and centrally located. Emergency lockouts are our priority, and you will get a realistic arrival estimate when you call (833) 589-8078, not a vague promise.
Exterior lock changes on your own doors do not require HOA approval, though some Foster City homeowners associations have rules about visible hardware finishes on street-facing doors. If your HOA requires a specific finish, we can match it with a compatible lock body.
Yes. One call covers your car, your home, and your emergency, which matters when a single afternoon means a lost transponder key and a house to rekey after a tenant moves out. We handle both on the same visit when possible, saving a second dispatch fee.
Call Citadel Locksmith at (833) 589-8078 for a free estimate on rekeying, car key replacement, or emergency lockout response in Foster City. The price we quote on the phone is the price on the invoice, and we are licensed and insured for every job in the 94404 ZIP.
What happens when you call
- 1A real person answersNo phone trees — talk to a local locksmith pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Foster City Customers Say
"Does good work. Card payment was a bit of a production, so have another option handy."
— Norma Herrera"Programmed a transponder key for a 2014 model that the dealership wanted an absurd amount for. Same key, fraction of the price, took him twenty minutes in my driveway."
— Grace Lin"Locked out at eleven at night with a kid asleep in the car. He was there in 25 minutes, had the door open in under two, and did not do the thing where the price goes up once he's standing in front of you."
— Greg Lawson