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 Anselmo
Door lock repair in San Anselmo typically runs $85 – $210 for a standard cylinder or deadbolt fix, and most jobs are done the same day we hear from you. If you live in a 1920s bungalow off San Anselmo Avenue or a 1950s tract home up toward Sleepy Hollow, you already know the locks here take a beating. Coastal fog rolling up the Ross Valley corridor corrodes cylinders faster than inland, and decades of settling shift door frames so bolts drag against misaligned strikes. We fix the lock you have before we sell you a new one. Call Preston Locksmith & Security at (409) 405-4485 and you’ll get a written price, a live arrival time you can track, and a background-checked tech in uniform at your door.
Why Preston Locksmith & Security Is San Anselmo’s Preferred Door Lock Repair Company
San Anselmo homeowners call us because we answer the phone, name a price, and show up when we say we will. Kevin Yoon founded Preston Locksmith & Security in 2008, and the same standard applies to every job in San Anselmo: a written quote before a single tool leaves the bag, before-and-after photos of the work, and a 365-Day Done Right Promise stamped on every repair. If it’s not done right, we make it right. No charge, no argument.
Our techs know San Anselmo’s housing stock. The town’s older bungalows and mid-century tract homes were built with mortise locks and faceplates sized for doors that have settled, shifted, and swollen over decades. A tech who only knows new-construction hardware will tell you the door is the problem and quote you a replacement. Our techs re-align strikes, clean and re-lubricate pin and tumbler assemblies, and re-key existing cylinders so you keep the original hardware when it still has life in it.
Response time to most San Anselmo neighborhoods runs 45 – 70 minutes for non-emergency calls. Every job is covered by The Relay Visibility Guarantee: a live trackable arrival time, before-and-after photos, and a written price confirmed before dispatch. You know who is coming, what they look like, and when they will arrive before they knock.
We serve the whole San Anselmo area, from the flats near Creek Park up into the hills around Butterfield Road and Broadmoor Avenue, out toward Sleepy Hollow and the bends of Sir Francis Drake Boulevard. Local knowledge means we know which streets get heavy marine-layer moisture, which homes still run original hardware, and how long it actually takes to cross town at school pickup time.
Sliding Door Lock Repair in San Anselmo
Sliding door lock repair in San Anselmo usually costs $95 – $185, and a surprising number of calls we take for “broken” sliding locks end up being a misaligned latch keeper or a striker plate that shifted as the track settled, not a failed lock body at all. Patio sliders on San Anselmo homes sit directly in the path of that afternoon wind coming up the Ross Valley, and the constant racking works keepers loose over time. The door will look locked when it isn’t, or won’t latch without lifting the panel and slamming it home.
Keeper and Latch Realignment
Most sliding door failures in San Anselmo are fixed by adjusting the keeper, shimming the latch, or replacing a worn spring-loaded hook. That’s a $95 – $135 job, done in under an hour, and you keep the original door hardware. We’ll show you the before-and-after photos so you can see exactly what changed.
Lock Body Replacement
When the mortise-style lock inside the slider frame is genuinely stripped or corroded, replacement runs $150 – $185 including the part and labor. We stock common replacement latches for the major sliding door brands, so there’s no week-long wait for a part when you just want your back door to actually lock tonight.
Deadbolt Repair in San Anselmo
Deadbolt repair in San Anselmo runs $90 – $160 for most jobs, including re-keying the cylinder if you want old keys dead, re-lubricating the internals, and adjusting the strike so the bolt throws clean. The most common call we get is the deadbolt that grinds halfway and stops: you have to lift the handle, pull the door, or curse at it to get the bolt to seat. That’s almost always a misaligned strike plate, not a broken lock.
Strike Plate Adjustment
In San Anselmo’s older bungalows, decades of settling shift the door frame so the deadbolt’s throw path no longer lines up with the strike plate hole. We file, shim, and reposition the strike so the bolt seats without force. Cost is typically $90 – $125, and it’s the difference between a door that locks right and one that leaves you jiggling keys in the dark.
Cylinder Replacement and Re-Key
When fog and marine moisture have corroded the cylinder to the point where the key sticks or won’t turn, we replace the cylinder and re-key it to match your existing key if that’s what you want. Runs $130 – $160 on average. We service Schlage, Kwikset, Medeco, Yale, Baldwin, Mul-T-Lock, Sargent, and Abloy hardware, including deadbolts that are no longer made and need a retrofit cylinder.
Trusted Brands We Service in San Anselmo
We’re trained and equipped to service Schlage, Kwikset, Medeco, and Yale hardware, from standard residential deadbolts to high-security commercial cylinders. Our techs carry common replacement parts, springs, tailpieces, and cylinders in the van, and for San Anselmo’s older mortise locks we can often source period-appropriate replacements from Bay Area suppliers within a day or two. That matters when you’ve got a 1920s bungalow with original hardware and you don’t want a modern deadbolt hacked into a door that was never built for it. Whether it’s a Baldwin mortise lock on a San Anselmo Avenue front door or a Schlage deadbolt on a Sleepy Hollow side entry, we fix it in place before recommending replacement.
Common Door Lock Repair Problems We See in San Anselmo Homes
- Mortise lock binding from door frame settling. Original mortise lock bodies in San Anselmo’s older bungalows bind because decades of settling shift the door frame, so the bolt drags against a misaligned strike. A modern replacement cylinder won’t fix that until the strike and door are re-aligned, which is exactly the repair we do most often.
- Corroded cylinders from Ross Valley fog. Fog and coastal moisture rolling up the Ross Valley corridor corrode lock cylinders and deadbolt internals faster than in inland Bay Area cities. Keys stick, the bolt seizes mid-throw, and suddenly the lock you’ve used for years won’t turn. Cleaning and re-lubricating often restores it; replacement is faster and cheaper than you’d think when the corrosion has gone too far.
- Sliding door keepers that fail before the lock body. Sliding door locks on San Anselmo patios often fail at the latch keeper rather than the lock body itself. Homeowners replace the whole assembly when a keeper adjustment or new latch is all that’s needed, so we always inspect the keeper and track alignment before quoting a replacement.
- Worn spindles and shifted strike plates on original front doors. The 1920s bungalows along San Anselmo Avenue and the surrounding streets frequently have original front doors with spindles worn smooth and strike plates shifted out of alignment. The bolt throws halfway and stops. It’s a repair, not a replacement, and it usually leaves the homeowner with their original hardware intact.
Pricing for Door Lock Repair in San Anselmo, CA
Here’s what door lock repair actually costs in San Anselmo: a standard cylinder or deadbolt fix runs $85 – $210. Sliding door lock repair lands at $95 – $185. Deadbolt-only work is $90 – $160. Mortise lock repair on older bungalows runs $140 – $240 depending on whether we’re machining a replacement faceplate or fitting a new cylinder into the original lock body. The price you’re quoted on the phone is the price on the invoice. No trip fee added on arrival, no surcharge for the neighborhood, no story about how the job was “bigger than expected.” That’s the whole point of The Relay Visibility Guarantee: the written price is confirmed before anyone is dispatched, and it’s the price you pay when the work is done. Call (409) 405-4485 for an exact quote, free.
We Also Serve Cities Near San Anselmo
If you’re just over the town line, we cover Fairfax, Kentfield, San Rafael, and Larkspur too. Our team of Door Lock Repair techs regularly runs calls across the Ross Valley corridor, so the same written-price guarantee and 45 – 70 minute response time applies whether you’re in San Anselmo proper or the next town over.
Serving San Anselmo, CA - Our Local Coverage Area
We’re based in the San Anselmo 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 Anselmo
Yes, in most cases. Original mortise locks on San Anselmo’s 1900s – 1950s homes can usually be repaired by replacing the worn cylinder, spindle, or springs, re-lubricating the pin and tumbler assembly, and re-aligning the strike plate. We only recommend full replacement when the lock body itself is cracked or the internal springs have failed beyond a rebuild. Repair typically runs $140 – $240, versus $300+ for a quality replacement mortise lock plus installation. Call (409) 405-4485 and describe your lock – we’ll tell you honestly whether it’s worth saving.
Most standard door lock repairs in San Anselmo take 30 – 60 minutes on site, once the tech arrives. Deadbolt adjustments and cylinder re-keys are usually done in under 45 minutes. Mortise lock rebuilds on older bungalows can take 90 minutes to two hours if we need to machine a faceplate or fit a retrofit cylinder. We’ll give you a time estimate on the phone along with the written price, before you commit to anything.
We give a written price before anyone is dispatched, and there’s no separate trip fee or call-out surcharge added on arrival. The price you agree to on the phone is the price on the invoice. The Relay Visibility Guarantee means you get a live trackable arrival time, before-and-after photos of the job, and a written guarantee on every repair, including a free second visit if the repair fails. Call (409) 405-4485 for a free estimate.
Every Preston Locksmith & Security tech arrives in uniform, is background-checked, and carries company identification. When you book, you’ll get the tech’s name and a live trackable arrival time through The Relay Visibility Guarantee. You’ll see exactly where the tech is before they arrive, so there’s no guessing whether the person at your door is the one we sent. If you’re ever unsure, call the office line at (409) 405-4485 and we’ll confirm the tech’s identity and current location immediately.
Almost always, yes. Sliding door lock failures in San Anselmo usually come down to a misaligned keeper, a worn latch, or a corroded internal lock body inside the door frame. We replace the specific part that failed – keeper, latch, or lock body – for $95 – $185. You do not need a new door, and in most cases you don’t even need a new lock assembly. We’ll show you exactly what we’re replacing with before-and-after photos.
Have a door lock that’s sticking, grinding, or won’t latch? Call Preston Locksmith & Security at (409) 405-4485 for a free quote. You’ll get a written price before any work starts, a live arrival time you can track, and a background-checked, uniformed tech who’ll fix the lock in place before selling you anything new.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving San Anselmo and the Ross Valley since 2008.






