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 Fairfax
A residential locksmith call in Fairfax usually costs between $95 and $240 for a standard lock change or rekey, and most jobs are finished the same day. We work throughout Fairfax, including the hillside streets off Scenic Road, the flats near Bolinas Road, and the older cottages that line Sir Francis Drake. If you’re locked out, need a deadbolt replaced, or want a smart lock on a 1940s door, call (818) 390-9007 and a live person answers, day or night.
Fairfax is not San Rafael. The housing stock is older, the canyon air is wetter, and the doors are rarely plumb. A technician who only knows new-construction hardware will struggle here. We know which original mortise locks can be saved, which cylinders are worth rekeying, and when a door frame, not the lock, is the actual problem.
Why Blackthorn Locksmith & Security Is Fairfax’s Preferred Residential Locksmith Company
Our Residential Locksmith team has spent years working inside Fairfax’s craftsman bungalows and board-and-batten cottages. We know the hardware that came on these homes: Baldwin mortise locks, Schlage single-cylinder deadbolts from the 1960s, Kwikset knobsets fitted during landlord turnovers in the 1980s, and the occasional skeleton-key setup that still works fine if you know how to service it. Fairfax homeowners call us because we diagnose before we replace.
Shane Delaney runs our operation, and he holds every technician to the Cedarwell Care Promise: shoe covers and drop cloths before we step inside, a written price before any work starts, and a photo of the clean-up before we leave. That matters in Fairfax, where homes have fir floors, wool rugs, and kids and dogs underfoot. We treat the entryway like it belongs to a neighbor, because it does.
Response time to Fairfax is typically 30 to 45 minutes for lockouts, depending on where you are in the valley. We dispatch from our Bay Area office, and our crews know the shortcut up Center Boulevard and the hairpin turns near the Meadow Club without relying on a GPS that loses signal under the redwoods. A live person answers the phone 24 hours a day, 7 days a week, including holidays.
Lock Replacement in Fairfax
Lock Replacement in Fairfax typically runs $110 to $260 for a standard deadbolt or entry knob, and $180 to $400 when a legacy mortise lock needs a conversion plate, new strike, or custom boring. The first thing we do is check whether the existing lock actually needs to go. In this town, a deadbolt that won’t throw in January is often a swollen door frame, not a dead cylinder. We’ll tell you straight which one it is.
When a lock has genuinely failed, a paint-filled cylinder, a stripped tailpiece, a spindle that snaps inside the mortise body, replacement is the honest fix. We carry Schlage and Kwikset hardware in common Fairfax finishes, including aged bronze and satin nickel, so the new lock doesn’t look out of place on a 1930s door.
Mortise Lock Conversions
Many Fairfax homes still have the original mortise lock body in the door edge, with a faceplate that doesn’t match any modern footprint. We carry adapter plates and conversion kits that let a modern deadbolt sit cleanly over the old cutout without leaving gaps or splintering the door edge.
A conversion done properly means the new deadbolt throws into the original strike, the trim plate covers the old screw holes, and the door latches on the first push. Done poorly, you end up with a drafty hole and a deadbolt that grinds. We’ve fixed enough amateur conversions in this town to know the difference.
Deadbolt Upgrades
A single-cylinder deadbolt with a proper hardened-steel bolt is still the right choice for most Fairfax doors. We install Schlage B60-series deadbolts and Kwikset 980 models as our standard residential upgrades, and we can key them to match your existing knobs so you carry one key instead of two.
For homes with glass near the door, a double-cylinder deadbolt may be worth considering, but we’ll walk you through the trade-offs. Fairfax has its share of vintage leaded-glass entryways, and a thumb-turn deadbolt within reach of a broken pane is a real security gap. We’ll quote both options before any work begins.
Smart Lock Installation in Fairfax
Smart Lock Installation in Fairfax runs $145 to $320 for the labor, plus the lock itself, and we’ll quote you a written total before we touch a screwdriver. The challenge in Fairfax is rarely the smart lock, it’s the door. Pre-1960 deadbolt cutouts, thick trim plates, and warped frames mean a smart lock install here takes more care than in a newer subdivision.
We install Schlage Encode, Yale Assure, and Kwikset Halo locks on Fairfax doors regularly. We set up the app with you, walk you through codes for family members and cleaners, and make sure the auto-lock works without the door binding in winter.
Fitting Smart Locks to Older Doors
A smart lock’s motorized bolt needs a straight shot into the strike plate. If your Fairfax door frame has settled, even a quarter-inch of misalignment will make the motor strain, drain the batteries, and eventually strip the gears. We re-set or reposition the strike as part of a smart lock install, so the bolt glides instead of grinding.
We also carry motorized deadbolts and latch adapters for doors where the existing knob is too close to the deadbolt, a common condition on narrow-stile Fairfax doors from the 1930s and 40s. You don’t need a new door. You need a technician who has seen that door before.
Keypad and Touchscreen Preferences
Keypad deadbolts are the most popular smart lock in Fairfax, because they solve the classic Fairfax problem: a tenant turnover with seven different keys floating around the neighborhood. A keypad lock gives a landlord a new code per tenant, no rekeying, no hardware swap.
Touchscreen models tend to struggle in the canyon’s damp air more than button keypads, and we’ll be honest about that trade-off. If your front door is shaded and moss grows on the north side, we’ll steer you toward a physical-button keypad that won’t have condensation sensitivity.
Trusted Brands We Service in Fairfax
We carry and service Schlage, Kwikset, Yale, Baldwin, and Medeco hardware, and we stock common parts for Fairfax’s older locks rather than ordering everything from a warehouse. That means a 1960s Schlage deadbolt with a worn tailpiece or a Yale mortise cylinder with a corroded plug gets fixed in one visit, not two. We’re a Medeco dealer, so we can install and service high-security Medeco deadbolts and keys for Fairfax homes where key control matters, and we’ve rekeyed our share of Baldwin mortise locks in this town. If your hardware is obscure, we’ll source the part honestly and tell you the lead time before you commit.
Common Residential Locksmith Problems We See in Fairfax Homes
- Winter deadbolt bind from swollen door frames. The canyon’s trapped moisture swells fir and redwood doors against their jambs every winter. The deadbolt won’t throw, the key won’t turn, and the lock seems dead, but by August it works again. We re-set the strike and plane or sand the binding edge so the lock works year-round.
- Paint-filled cylinders from decades of repaints. Fairfax landlords and tenants love a fresh coat of paint, and the locks usually get painted right along with the door. Paint inside the cylinder plug stops the pins from seating. Sometimes we can flush it clean; when the corrosion underneath is too deep, the cylinder gets replaced.
- Obsolete mortise locks with no modern drop-in replacement. A 1930s Fairfax bungalow with the original mortise body in the door edge won’t accept a modern Kwikset or Schlage deadbolt without a conversion. We’ve seen doors where someone forced a modern lock into an old mortise pocket and split the wood. We do it the right way, with adapter plates and proper reinforcement.
- Long-term rental turnovers with un-rekeyed cylinders. Some Fairfax tenants stay in the same cottage for 15 or 20 years, and the lock hasn’t been touched since the Clinton administration. The cylinder is often so corroded from the damp canyon air that rekeying is impossible, and a full replacement is the only way to restore reliable key control and security.
Pricing for Residential Locksmith in Fairfax, CA
Here’s what you can expect to pay in Fairfax, honestly: a lockout runs $85 to $160 during the day and $120 to $220 after hours. A lock change or rekey is $95 to $240 depending on the hardware. Smart lock installation labor is $145 to $320. A mortise lock conversion with parts runs $180 to $400. We quote a written price before any work starts, and that’s the price on your invoice, no call-out surcharge added on arrival. The only thing that moves the number is what we find behind the door when we see the actual hardware. Call (818) 390-9007 for a free estimate based on your specific door and lock.
We Also Serve Cities Near Fairfax
Most of our Fairfax calls come from within the town itself, but we also work in San Anselmo, Kentfield, San Rafael, and Larkspur. If you’re in one of those towns and need a Residential Locksmith in Fairfax who understands Marin’s older doors and damp, wooded neighborhoods, we’re glad to help, and our pricing doesn’t change at the county line.
Serving Fairfax, CA - Our Local Coverage Area
We’re based in the Fairfax 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 Fairfax
Usually not. What you’re describing is almost always the Fairfax valley microclimate at work: winter humidity swells the redwood or fir door frame, the edge of the door presses against the jamb, and the deadbolt’s bolt binds inside the strike plate. The lock itself is often fine. We fix it by re-setting the strike plate, adjusting the hinges, and trimming or sanding the binding edge so the door clears the jamb with an even gap. The deadbolt then throws and retracts without fighting the frame. We’ll inspect the lock too, but in January, the frame is the culprit far more often than the cylinder. Call (818) 390-9007 and we’ll diagnose it on site.
It depends on the condition of the mortise lock body and the cylinder. If the lock body’s springs and levers still move cleanly and the cylinder plug isn’t heavily corroded, we can rekey it with a fresh pin and tumbler set and keep the original hardware. If the cylinder is paint-filled, deeply pitted from Fairfax’s damp air, or the mortise body has a snapped spring or a cracked case, rekeying is a temporary patch and we’ll be straight with you. A replacement mortise cylinder or a full mortise lock replacement is then the honest recommendation. We’ll always tell you which you’ve got before we quote anything.
A smart lock can work on a 1930s Fairfax door if the deadbolt cutout is round and the door frame is sound, but the install often needs more than just swapping the hardware. We set or reposition the strike plate so the motorized bolt travels straight, because a misaligned strike makes the motor grind, drain batteries, and eventually fail. We install Schlage Encode, Yale Assure, and Kwikset Halo models on Fairfax craftsman doors regularly. Touchscreen keypads can be finicky in our damp, shaded canyon conditions, so we often recommend physical-button keypads for Fairfax doors that sit under redwood canopy and catch morning fog.
That’s one of the most common calls we get in Fairfax, and the answer depends on what’s inside the cylinder after all that time. If the cylinder is just dusty and a little stiff, we can rekey it with new pins and send you on your way with new keys and the old ones useless. But if the cylinder was painted over through multiple turnover repaints and the plug is corroded from decades of canyon humidity, it won’t rekey reliably. The pins won’t seat cleanly, and the new key will feel sloppy or stick. In that case, we replace the cylinder or the whole lock, and we’ll show you the old parts so you can see why. Call (818) 390-9007 and we’ll tell you which path you’re on before we begin.
We use non-destructive entry methods first, and in most cases, we don’t drill anything. The right tool, the right technique, and patience with a 70-year-old lock gets most Fairfax doors open without damage. We carry lock bypass tools, loiding tools for old spring-latch Knobsets, and picks sized for older keyways, and we’ve opened plenty of Baldwin mortise locks on this town’s original doors without leaving a mark. Drilling is a last resort for a seized cylinder or a deadbolt with no bypass, and if we have to drill, we’ll tell you before we touch the door and replace the cylinder cleanly. Fairfax’s older doors deserve a careful hand, and that’s how we work.
Written by Shane Delaney, Owner at Blackthorn Locksmith & Security, serving Fairfax since 2008.






