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 South San Francisco
A residential locksmith call in South San Francisco typically costs $95 to $320 depending on the job, and most lockouts, rekeys, and deadbolt installs are completed the same day. We cover every neighborhood from Old Town to Oyster Point, and the price you’re quoted on the phone with us is the exact price on your invoice. Call (409) 405-4485 and you’ll get a live person, a written price, and a trackable arrival time before anyone heads your way.
South San Francisco isn’t just one kind of housing market. The flat streets of Old Town hold pre-1960 homes with mortise locks that many newer locksmiths have never rebuilt, while the corridor along 101 and El Camino near Oyster Point is dense with newer apartments and condos running standard pin and tumbler deadbolts. Each calls for different tools, different parts, and different training. Our Residential Locksmith team carries both on every truck. That’s what lets us quote a job accurately over the phone and finish it on the first visit.
Why Preston Locksmith & Security Is South San Francisco’s Preferred Residential Locksmith Company
Our customers in South San Francisco keep calling back because they know exactly what they’re getting before we pull up. The Relay Visibility Guarantee means three things on every job: a written price before work starts, a live trackable arrival time, and before-and-after photos so you can see exactly what changed. No other locksmith in the South San Francisco area puts all three in writing as a standard practice.
We’ve been doing this since 2008 as part of the Relay Home Co. family, each location independently owned and operated. Our technicians are background-checked and arrive in uniform, so when you open your door on Grand Avenue or a side street off Spruce, you’re not guessing who’s standing there. Kevin Yoon, our owner, holds every tech to the 365-Day Done Right Promise: if it’s not done right, we make it right, and every repair carries a written guarantee with a free second visit if it fails.
Response time to South San Francisco is typically 30 to 50 minutes because we dispatch locally from the Bay Area office and our crews know the shortcuts around the 101 merge at Oyster Point and the residential grid west of El Camino. You’ll see the arrival window update live on your phone, same as a rideshare. No four-hour windows, no phone tag.
Smart Lock Installation in South San Francisco
Smart Lock Installation in South San Francisco runs between $180 and $420 for most single-door setups, and the job includes removing the old deadbolt, cutting the door prep cleanly if needed, mounting the smart lock, programming codes, and testing the full cycle. Older South San Francisco homes with mortise locks sometimes need a conversion plate, which we’ll quote before starting if your door calls for one.
What the install actually involves
Most smart locks replace an existing deadbolt, so the bulk of the work is mechanical: aligning the tailpiece, setting the strike plate flush, and making sure the bolt throws cleanly without binding. Then we handle the programming. Homeowners on the flat blocks of Old Town often ask about battery life and whether the lock still works with a physical key, and the answer is yes on both counts. We stock Schlage Encode and Kwikset Halo models and can install whatever brand you prefer.
Old mortise locks to smart locks
If your home was built before 1960 around Old Town or near South San Francisco High School, you likely have a mortise lock body instead of a standard cylindrical deadbolt. That doesn’t rule out a smart lock, but it does require a larger conversion project that typically adds $80 to $150 to the install. We’ll inspect the door and tell you straight what’s needed before any work begins.
Locked Out of Apartment in South San Francisco
Locked Out of Apartment in South San Francisco is the most common emergency call we get, and most non-destructive entries are completed in 15 to 30 minutes once we arrive. The typical cost runs $95 to $150 for a standard lockout, and that’s the full price: the written quote you approve before dispatch is what you pay when you’re back inside. No surcharge added on the doorstep.
What we do when you’re locked out
First, we verify who you are. In South San Francisco’s many multi-unit buildings, from the newer complexes near Oyster Point to older walk-ups along El Camino, we check a lease, ID, or utility bill before opening any door. It’s a liability issue for tenants, landlords, and us alike. Then we use picks and bypass tools to open the lock without drilling whenever possible. A drilled lock costs more to fix, so non-destructive entry saves you money and keeps your hardware intact.
When there are two locked doors
Many South San Francisco apartment buildings have a shared exterior door and your unit door. If both are locked and you can’t get through either, we treat the exterior entry and the unit entry as separate line items on the quote so you see exactly what each one costs before we touch anything. In practice, most building exteriors open quickly with a bump-resistant bypass, and your unit door is the main event.
Trusted Brands We Service in South San Francisco
We’re trained and equipped on Schlage, Kwikset, Medeco, Yale, Baldwin, Mul-T-Lock, Sargent, and Abloy hardware, from standard residential deadbolts to high-security cylinders. On a typical South San Francisco job, our trucks carry a working stock of Schlage and Kwikset cylinders, Medeco key blanks, and rekey kits. If your lock is a Baldwin mortise in an Old Town bungalow or an Abloy on a newer condo, we either have the part or can source it same day from Bay Area suppliers. You won’t wait a week for a lock cylinder.
Common Residential Locksmith Problems We See in South San Francisco Homes
- Fog corrosion on door hardware. The damp air that rolls off the Bay and sits over Westborough and Terrabay accelerates rust and tarnish on exposed door hardware, especially keypads and exterior deadbolts. We regularly replace corroded cylinders that have seized from salt air, even in homes less than ten years old.
- Misaligned strike plates on settling foundations. The fill soil in the flatlands near the shoreline, especially around Oyster Point and the older blocks east of El Camino, shifts over time. Doors settle, strike plates drift out of alignment, and deadbolts start slamming against the jamb instead of throwing cleanly. The fix is usually a strike plate adjustment or a hinge correction, not a new lock.
- Lockouts in multi-unit buildings with buzz-in systems. South San Francisco has a high share of apartment and condo buildings where a shared entry and a unit door both need to be addressed. Tenants frequently lock themselves out with only a phone and no lease on hand, which means we pause to verify identity properly rather than rushing the open.
- Rekey after roommate turnover. The rental turnover along the El Camino corridor and the newer stacked units near the 101 means former roommates, ex-partners, and old subletters sometimes keep copies of keys. Rekeying the cylinder, which means swapping the internal pins so the old key no longer works, costs far less than replacing hardware and gives the remaining tenant a fresh start the same day.
Pricing for Residential Locksmith in South San Francisco, CA
Rekeying a standard lock in South San Francisco runs $25 to $45 per cylinder, and we confirm the exact figure in writing before we start. A full lock change typically lands between $120 and $200 per door for hardware and labor. Deadbolt installation runs $150 to $250 for a standard single-cylinder model. Window locks and door reinforcement hardware like strike plates and hinge screws generally run $20 to $45 per opening. Every price above is the complete price you’ll see on the invoice, not a starting point.
What affects cost most is the number of cylinders, not the drive time. A house with four keyed-alike locks costs more than a single deadbolt rekey, and a smart lock install with platform work whether we’re converting a mortise lock or doing a straight deadbolt swap. You’ll get every line item on the phone first, including parts and any conversion plate your door requires. That’s the whole point: you agree to the number before dispatch. Call (409) 405-4485 for a free estimate on your exact setup. And no, there is no separate call-out fee tacked on when the tech arrives.
We Also Serve Cities Near South San Francisco
Beyond South San Francisco, our techs cover Residential Locksmith in South San Francisco neighbors including Brisbane, Daly City, San Bruno, and Millbrae. If you’re in one of those spots and need a rekey, lockout, or deadbolt installed, same written-price rule applies. Call (409) 405-4485 and you’ll get an exact number before anyone leaves the shop.
Serving South San Francisco, CA - Our Local Coverage Area
We’re based in the South San Francisco 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 South San Francisco
Yes, in most cases. We open standard pin and tumbler deadbolts and mortise locks non-destructively with picks and bypass tools, and we’ll only drill as a last resort if the lock is badly corroded or mechanically failed. Non-destructive entry in South San Francisco typically costs $95 to $150 depending on the lock type, and you’ll know the exact price before we start. Call (409) 405-4485 and we’ll confirm your lock and give you a written number.
Yes, we quote each door as its own line item, so you’ll see the exterior entry and the unit entry priced separately before we dispatch. In practice, shared building doors often open quickly with a standard bypass, and your unit door is usually the main part of the job. You’ll approve the full written total, including both doors, before we leave for your address. Call (409) 405-4485 for an exact quote.
Yes. Rekeying means we swap the internal pins inside the lock cylinder so the old key no longer turns the plug, and no new hardware is needed. In South San Francisco, rekeying a standard cylinder runs $25 to $45 per lock, and if multiple locks need to be keyed alike, we’ll give you a single written price for the whole set. It’s the cheapest way to make an old key worthless.
Yes, but it’s a conversion project, not a straight smart lock swap. Older homes in Old Town and around Spruce Avenue typically have mortise lock bodies, which means we either install a smart lock that fits the mortise pocket or convert the door prep to a standard cylindrical bore. Conversion adds roughly $80 to $150 to the smart lock install, and we’ll inspect the door before quoting so there are no surprises. Call (409) 405-4485 and we’ll look at your door in person.
You’ll get a live trackable arrival link before we leave the shop, so you’ll see the tech’s name and vehicle moving toward your address in real time. Our techs wear uniforms, arrive in marked vehicles, and carry ID that matches the name on your dispatch notification. Before any work starts, you’ll have a written price with The Relay Visibility Guarantee, and after the job, you’ll get before-and-after photos. If the person at your door can’t produce all three, they’re not us.
If you need a residential locksmith in South San Francisco, call (409) 405-4485. We’ll give you a written price, a live arrival time, and proof of who’s coming before they knock.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving South San Francisco since 2008.