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West BayLocksmith Services
Emergency Tips2026-03-155 min read

Key Broke in Your Lock? Here Is What to Do

By West Bay Locksmith ServicesLicense #LCO8530

It happens more often than you might think. You are rushing out the door in Petaluma, turning the key a little too hard, and snap — half the key is in your hand and the other half is stuck inside the lock. A broken key is frustrating, but it is not the end of the world. Here is what to do, what to avoid, and when to call a professional locksmith in Sonoma County.

Should You Force a Broken Key Out?

Got a call from an office manager on Fourth Street in Santa Rosa whose front door key snapped at 7 AM with the whole staff waiting outside. Her first instinct was to grab pliers and try to yank the broken piece out. We told her the same thing we tell everyone: resist that urge. Forcing the key fragment deeper into the cylinder can damage the internal pins, turning a simple extraction into a full lock replacement. Do not try to insert another key alongside the broken piece either, because this almost always pushes the fragment further in. If the lock is on your front door in Sebastopol, Windsor, or anywhere else in Sonoma County, step back, take a breath, and assess the situation before you act.

Can You Extract a Broken Key Yourself?

If part of the broken key is still visible and sticking out of the keyhole, you may be able to remove it yourself. Try using thin needle-nose pliers to gently grip the exposed edge and pull it straight out. Another method is to apply a tiny drop of lubricant like WD-40 into the keyhole, then use a thin jigsaw blade or a broken key extractor tool (available at hardware stores for under $10) to hook the key fragment and slide it out. Work slowly and gently. If the key does not come out within a few minutes, stop. Continued attempts risk damaging the lock.

When to Call a Professional Locksmith

If the broken key is flush with or inside the cylinder, or if your DIY attempts are not working, it is time to call a locksmith. A professional has specialized extraction tools designed to grip and remove broken key fragments without damaging the lock. At West Bay Locksmith Services, broken key extraction typically costs $75 to $120 depending on the lock type and difficulty. We serve all of Sonoma County — from Rohnert Park and Cotati to Healdsburg and Cloverdale — and can usually arrive within 30 minutes during business hours. In most cases, we can extract the key and have you back inside in under 15 minutes.

Preventing Broken Keys in the Future

Keys break for a reason, and the most common one is a worn-out key or a lock that needs maintenance. If your key has visible cracks, bends, or worn-down teeth, get a fresh copy made before it snaps — key cutting starts at just $5 for standard keys. If your lock is stiff or hard to turn, a shot of graphite lubricant can help. Avoid using your key to pry, open boxes, or do anything other than operate a lock. And if your lock cylinder in your Santa Rosa or Petaluma home is getting old and temperamental, consider having it rekeyed or replaced before a key breaks inside it.

Need Help? Call a Licensed Locksmith

West Bay Locksmith Services serves all of Sonoma County with flat-rate pricing, no hidden fees, and BSIS-licensed technicians. Available 7 AM to 11 PM, 7 days a week.

(707) 775-7069