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 Door Lock Repair Across San Francisco
Door lock repair in San Francisco typically costs $95 – $220 for standard cylinders and mortise lock rebuilds, and a sticky deadbolt on a Victorian front door usually takes under an hour to put right. Most calls we handle in San Francisco are same-day, and you get a written price before anyone is dispatched. Call (409) 405-4485 and a live person answers, 24/7.
San Francisco is not a tract-home city. The housing stock leans old, the fog is real, and the doors are not standardized. That changes what “door lock repair” actually means here. On a block of 1920s flats in the Richmond or a Victorian row in Noe Valley, you are more likely dealing with a century-old mortise body than a modern bored deadbolt. Our Door Lock Repair team carries the parts and the patience for both, and we serve San Francisco neighborhoods from the Outer Sunset to Bayview.
Why Preston Locksmith & Security Is San Francisco’s Preferred Door Lock Repair Company
Since 2008, Preston Locksmith & Security has repaired locks in San Francisco under one simple rule: the price you agree to on the phone is the price on the invoice. No arrival fee added at the door, no vague “plus parts” line. The quote is written, and the 365-Day Done Right Promise backs the work. If a repair fails within a year, the second visit is free.
Every technician we send into San Francisco is background-checked and arrives in uniform. You know the name, the face, and the live arrival time before the van leaves. That matters in a city where a lot of lock work happens in narrow entryways and shared stairwells. The Relay Visibility Guarantee means you track the tech in real time, see before-and-after photos of every job, and get a written guarantee stamped on the repair. Kevin Yoon, who leads our team, insists on this for every single call. Phones are answered by a live person in San Francisco, not a callback queue.
Deadbolt Repair in San Francisco
Deadbolt repair in San Francisco usually means one of three things: a bolt that won’t throw because the strike plate has drifted, a thumbturn that spins without moving the bolt, or a cylinder so worn that the key drags. In older San Francisco buildings, the most common culprit is wallowed-out screw holes in 100-year-old door edges. The deadbolt body is fine; the wood around it is not. We fix it by re-boring and doweling the hinge-side screw holes, resetting the strike so the bolt seats fully, and re-tensioning the internal parts-often we can rekey locks in San Francisco as part of the same visit if needed. A standard deadbolt repair in San Francisco runs $95 – $180, and about half the time we can save the existing hardware rather than replace it.
When a Deadbolt Is Worth Replacing Instead
If the bolt itself is bent, the tailpiece is cracked, or the housing is so worn the key can be jiggled out, repair is throwing good money after bad. In those cases, we quote a replacement Schlage service in San Francisco or Kwikset deadbolt, show the written price, and install it on the spot. The replacement range in San Francisco is $140 – $240, including labor.
Fog-Corroded Cylinders
Near the Sunset and the Richmond, salt air makes cylinders corrode faster than inland neighborhoods. The key starts dragging, then stops turning entirely. We clean and re-lubricate the cylinder and re-pin it if the keyway is salvageable. If the pins are worn flat, we swap the cylinder and cut fresh keys. That cylinder swap in San Francisco runs $60 – $120 on top of any deadbolt repair.
Patio Door Lock Repair in San Francisco
Patio door lock repair in San Francisco often involves sliding glass doors that have sagged, shifted, or swollen in damp weather. The lock itself may be fine; the door is no longer sitting where it did when the lock was installed. On ground-floor units in neighborhoods like Bernal Heights or Glen Park, that matters for more than convenience: a patio door that doesn’t latch is an open invitation. We adjust the roller height, realign the strike, and repair or replace the hook latch or mortise lock at the door edge. Patio door lock repair in San Francisco typically runs $120 – $260, written price confirmed before we start.
Loose Hook Latches and Misaligned Strikes
The hook latch on a sliding patio door grabs a strike in the frame. When the door sags, the hook catches at the wrong angle, wears, and eventually stops holding. We reset the door on its rollers first, then replace the strike and re-tension the latch. If the keeper is stripped, we drop in a new one, not another layer of shims.
Keyed Patio Door Locks
Some San Francisco patio doors have a keyed cylinder at the handle. When that cylinder binds, the door locks from the inside and you cannot get back out that way without a working key. We repair or replace that cylinder the same day, usually within $80 – $140, and re-key it to match the rest of the house if requested.
Trusted Brands We Service in San Francisco
We work on Schlage, Kwikset, Medeco, Yale, Baldwin, Mul-T-Lock, Sargent, and Abloy hardware. For most San Francisco homes, Schlage and Kwikset are the everyday workhorses, and we stock common replacement cylinders, tailpieces, and strike plates locally so we do not have to order parts for a simple deadbolt repair. For commercial locksmith work in San Francisco or high-security jobs, we service Medeco and Mul-T-Lock cylinders in-house, including re-pinning to a restricted keyway where the building requires it. Kevin Yoon’s team trains on all of these brands, and we cut keys to factory depth-and-spacing specs, not eyeballed approximations.
Common Door Lock Repair Problems We See in San Francisco Homes
- Mortise locks stiffening up in pre-1930s buildings. Original mortise locks in Victorians and Edwardians collect a century of grime. The key turns partway and stops. We pull the mortise body, clean and lubricate the internals, and replace the worn cylinder without changing the look of the door.
- Stripped screw holes in old door edges. In 100-year-old wood, the screws holding a deadbolt or strike plate wallow out and the door stops latching. We plug and re-bore the holes rather than using longer screws that just strip again.
- Coastal fog corrosion. In the Sunset, Richmond, and any neighborhood within a few blocks of the ocean, salt air eats cylinder internals. Keys drag, then won’t turn. We clean, re-pin, or replace those cylinders and recommend a graphite or dry lubricant that does not gum up in fog.
- Doors that swelled or sagged after a cheap repair. A previous handyman replaced the lock but never adjusted the strike or checked the frame. The deadbolt throws, but only if you shove the door hard. We reset the strike, adjust the hinges, and get the bolt seating cleanly.
Pricing for Door Lock Repair in San Francisco, CA
Door lock repair in San Francisco runs $95 – $220 for most jobs. A standard deadbolt repair is $95 – $180. Patio door lock repair is $120 – $260. Cylinder swaps and re-pinning are $60 – $120. Full mortise lock rebuilds on older homes run $180 – $340 depending on what is salvageable. What moves the price: the age of the lock, whether we are repairing or replacing, and the condition of the door frame around it. You always get a written price before we dispatch, and it is the same price on the invoice. No call-out surcharge added on arrival. Call (409) 405-4485 for a free estimate, and a live person gives you a real number on the phone.
We Also Serve Cities Near San Francisco
Our San Francisco Bay Area office dispatches locally for Door Lock Repair in San Francisco, and we regularly cover the surrounding cities too. That includes Daly City, Brisbane, Sausalito, and South San Francisco. If you are just outside the city limits, call (409) 405-4485 and we will tell you same-day or next-morning availability.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the 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 Door Lock Repair in San Francisco
Usually not. In most San Francisco homes, a stiff key means the cylinder or mortise internals are gummed up, worn, or corroded rather than the entire lock being dead. Cylinder cleaning and re-pinning runs $60 – $120. A full mortise rebuild on an old Victorian lock runs $180 – $340, but we only replace the whole lock when the housing is cracked or the bolt is bent. Call (409) 405-4485 and describe what you are seeing; we will tell you the likely range on the phone.
The price you hear on the phone is the price on the invoice. We write it down before anyone is dispatched, and it includes labor and standard parts. If we find something genuinely different once the lock is open, we stop, show you the updated written price, and get your go-ahead before touching anything else. No arrival fee, no vague hourly rate, no “it’ll be more once we see it.” Call (409) 405-4485 for a real number.
You get the technician’s name, photo, and live trackable arrival time before they leave the office. They arrive in a Preston Locksmith & Security uniform and a marked vehicle. The Relay Visibility Guarantee means you see the same name on the booking, the app, and the badge at your door. If that does not match, do not let them in. Call (409) 405-4485 and verify.
Almost always, yes. We only drill a lock when the cylinder is so destroyed that no key can turn it and there is no other way to open the door without damaging the frame. On San Francisco’s older doors, we go out of our way to avoid drilling because the surrounding wood is often original. If drilling is absolutely necessary, we tell you before we do it and add the cost of a replacement cylinder to the written quote first. Call (409) 405-4485 and we will walk through your situation.
No. A patio door lock that won’t latch is part of the same door lock repair call in San Francisco. We adjust the rollers, reset the strike, and repair the latch or lock body in one visit. Patio door lock repair runs $120 – $260, and you get the written price on the phone before we come out. Call (409) 405-4485 to book it.
One last thing. We got a call from a homeowner on a Victorian block in the Mission whose front door mortise lock had stiffened to the point the key would only turn partway. The family was coming in through the garage every day. Our tech pulled the mortise body, cleaned and lubricated the ancient mechanism, replaced the worn cylinder and re-pinned it to a fresh key, then set the strike so the door latched without a shove and re-keyed the matching deadbolt so one key worked both. That is door lock repair in San Francisco. It is not always a swap. It is often a rescue.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving San Francisco since 2008.