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 San Mateo, CA
Rekey Locks is the service San Mateo homeowners call Citadel Locksmith about most, and for good reason. The city’s mix of 1940s bungalows, 1970s tract homes, and high-turnover rentals along the El Camino corridor means keys change hands constantly. Between landlord turnovers, roommate changes, and fog-damaged mortise locks that need replacement, a locksmith in San Mateo earns their keep by understanding both vintage hardware and modern cylinders. Call (833) 589-8078 when you need it done right.
Why San Mateo Homes Are Different
San Mateo’s housing stock spans nearly a century, and the older homes carry hardware most big-box stores stopped stocking decades ago. Single-story ranch homes and post-war tract houses from the 1940s and 1950s often still have their original mortise locks, the heavy rectangular lock bodies set into the door edge. Those locks were built well, but decades of moisture from the Bay do real damage. The marine layer rolls in most evenings, and winter fog settles into every exterior door. Locks that would last decades in a dry climate seize up here, their internal springs corroding and the brass tarnishing until the key barely turns.
Newer condos and apartments near downtown and the 101/92 interchange have modern cylindrical deadbolts, but they come with their own urgency. Tenant turnover in those buildings is high, and California landlord requirements mean rekeying between renters isn’t optional. A locksmith serving San Mateo has to carry parts for both worlds: replacement mortise lock bodies from salvage yards and specialty suppliers, plus current Kwikset and Schlage cylinders for the newer builds. Most shops stock one or the other. Citadel’s truck carries both, because in this city you never know which door you’ll face.
Styles & brands we work with
Our Main San Mateo Services
When San Mateo residents call us, two services account for the vast majority of the work. Here’s what each involves in this city specifically.
Car Key Replacement in San Mateo
Drivers along El Camino Real and the 92 corridor lose keys in predictable places: the gym, the office, the beach parking lot at Coyote Point. When it happens, the dealership quote stings. Citadel cuts and programs replacement keys for most makes and models, often the same day, without the tow truck and without the dealership markup. San Mateo’s mild climate rarely causes car key problems, but key fob batteries die on their own schedule, and transponder chips fail randomly. Car Key Replacement in San Mateo is a call you’ll be glad you saved.
Emergency Locksmith in San Mateo
Lockouts in San Mateo happen at the worst moments: late night outside a downtown apartment, early morning before work, weekend afternoon when the fog rolls in and you realize the house key is sitting on the kitchen counter. Our emergency response covers the whole city, from the 94401 zip code near downtown out to 94497 in the hills. We don’t drill locks unless there’s no other way. Most lockouts resolve in minutes with the original lock intact. Emergency Locksmith in San Mateo means one call covers your car, your home, and your emergency.
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 San Mateo
Rekeying a lock in San Mateo costs $65 to $180 per lock, depending on the cylinder type, and it’s the fastest way to take back control of who holds a key. In this city, where rentals turn over constantly and older mortise locks need special handling, rekeying is routine maintenance rather than an emergency fix. Citadel Locksmith has served San Mateo since 2011, and the rekey calls we get follow a pattern: a tenant moved out, a roommate left, a contractor still has a key, or a homeowner bought a 1950s bungalow and has no idea how many copies of the front door key exist. Rekeying answers all of those at once. If you want more detail on the process, our Rekey Locks page covers it end to end.
Lock Rekey
Signs you need it
You’ve moved into a new home or changed tenants and can’t account for every copy of the existing key.
What it costs in San Mateo
Standard cylinder rekeying in San Mateo runs $20 to $35 per lock in labor plus pins, so most single-cylinder jobs land between $65 and $95 total.
How we do it
We remove the lock cylinder, replace the pin tumblers inside with new ones matched to a fresh key, and reinstall the cylinder without replacing the visible hardware.
Rekey Door Lock
Signs you need it
Your deadbolt and doorknob use different keys and you want one key to operate both.
What it costs in San Mateo
Rekeying a standard door lock set (deadbolt plus knob) in San Mateo typically costs $75 to $180, including the service call.
How we do it
We rekey both cylinders to the same key, test the throw on the deadbolt, and check the strike plate alignment so the door latches without drag.
What Rekey Locks Costs in San Mateo
| Item | Typical range in San Mateo |
|---|---|
| Standard lock rekey (per cylinder) | $65 – $95 |
| Rekey door lock set (deadbolt + knob) | $75 – $180 |
| Additional cylinders beyond the service call | $20 – $35 each |
How long does rekeying take in San Mateo?
Most San Mateo homes with two or three entry doors are fully rekeyed in 30 to 60 minutes. Older mortise locks take longer because the cylinders require careful removal and sometimes need cleaning or replacement springs. Call (833) 589-8078 for a time estimate.
Can you rekey my 1950s mortise lock or should I replace it?
In San Mateo, many original mortise locks are still mechanically sound and can be rekeyed, but fog corrosion sometimes eats the internal springs. We’ll tell you honestly whether rekeying or replacement makes more financial sense. Estimates are free.
Brands We Service in San Mateo
Citadel Locksmith works across eight lock brands covering the full security spectrum. In San Mateo we see a lot of Kwikset and Schlage on newer builds, plus Baldwin and Yale on higher-end ranch homes and remodeled properties. We also service Medeco, Mul-T-Lock, Sargent, and Abloy for customers who want pick-resistant, drill-resistant hardware. Parts for common cylinders ride on the truck; specialty Medeco and Abloy parts we source same-week. See our brands page for what we carry.
Pricing for Locksmith in San Mateo, CA
| Service | Typical range in San Mateo |
|---|---|
| Lock rekey (standard cylinder) | $65 – $95 per lock |
| Rekey door lock set (deadbolt + knob) | $75 – $180 total |
| Additional cylinders beyond service call | $20 – $35 each |
| Car key replacement (basic non-chip) | $75 – $150 per key |
| Car key replacement (transponder chip) | $150 – $300 per key |
| Car key replacement (proximity fob / smart key) | $250 – $500 per key |
| Emergency lockout service call | $60 – $150 plus labor |
| Lost car key, no spare available | $200 – $600 depending on vehicle |
| High-security lock cylinder installation | $100 – $300 per cylinder plus hardware |
What pushes a San Mateo job toward the higher end is usually hardware age: a seized 1948 mortise lock takes longer to disassemble than a ten-year-old Kwikset deadbolt, and time is the honest variable. Whatever the range, the price we quote on the phone is the price on the invoice. No dispatch fee, no arrival surprise.
Neighborhoods We Serve in San Mateo
We cover every zip code in San Mateo: 94401, 94402, 94404, and 94497. Our service area includes the flatlands, the hills, and everything between the Bay and the 92.
- Downtown San Mateo
- Baywood / Aragon
- Hillsdale and the 94403 corridor
- Shoreview and Parkside
- San Mateo Highlands
Response across the city is typically within 30 to 45 minutes for emergency calls. Traffic on El Camino and Highway 92 can stretch that during commute hours, but weekends and midday calls move fast.
Service Area – Cities Near San Mateo
Citadel Locksmith also works the surrounding Peninsula communities. We handle rekeying for rental turnovers in Foster City, CA, older mortise locks in Belmont, CA, and high-security upgrades in Hillsborough, CA. Just north, we cover Highlands-Baywood Park, CA, where the housing stock mirrors San Mateo’s own mid-century inventory. One call covers your car, your home, and your emergency.
Serving San Mateo, CA — Our Local Coverage Area
We’re based in the San Mateo 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 San Mateo
Emergency response in San Mateo typically runs 30 to 45 minutes across all zip codes, though El Camino commute traffic can add time at rush hour. We prioritize lockouts and situations where a door won’t secure. Call (833) 589-8078 and we’ll give you a real ETA before anyone leaves.
No permit is required to rekey or replace residential locks or deadbolts anywhere in San Mateo. If you own a rental, California law requires you to rekey between tenants under most circumstances, but that has nothing to do with the city permitting desk. We handle rental turnovers routinely.
The price quoted on the phone before dispatch is the full price you pay on the invoice. Nothing gets added when our locksmith arrives, no separate trip charge, no fuel surcharge. Rekeying and installs are quoted as flat per-lock prices. Estimates for any job are free.
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 San Mateo Customers Say
"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"Told me over the phone that what I needed was a five dollar part from the hardware store, not a locksmith. I called him back a month later for real work because of that."
— Yolanda Mendoza"Key snapped off in the deadbolt. He extracted it without damaging the cylinder, which I did not think was going to be possible."
— Oscar Reyes