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What to do if…
a key snaps in the lock and you cannot lock or unlock the door

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy USA guide

Short answer

Stop turning the lock and do not insert tools into the keyway. Move to a safe position, keep any broken key pieces, and contact a locksmith or your building contact.

Do not do these things

  • Do not keep twisting the lock or test it repeatedly.
  • Do not push another key, a paperclip, a screw, a pick, or any other tool into the keyway.
  • Do not use glue, epoxy, or melted plastic on the broken key.
  • Do not authorize drilling or replacement work before asking why it is needed and what it will cost.
  • If you are inside, do not block the exit with anything that could slow you down in an emergency.

What to do now

  1. Get to the safest available position.

    • If you are outside and cannot get in, move somewhere secure nearby, such as a neighbor’s home, a staffed lobby, or another safe place.
    • If you are inside and cannot lock the door, keep the door closed and keep an exit route usable.

  2. Stop handling the lock.

    • Leave the key fragment where it is.
    • Do not try to pull it out if doing so would require force or inserting a tool into the keyway.

  3. Save the useful details.

    • Keep any part of the key that is already in your hand.
    • Take a photo of the lock, the visible fragment, and the edge of the door if you can do so safely.
    • Note whether the problem is with a deadbolt, a knob lock, or another lock.

  4. Contact the right person for the property.

    • If you rent, live in managed housing, or use a building association contact, call the landlord, property manager, or on-call maintenance number first if one is available.
    • Ask whether they need to arrange the locksmith or approve lock work.

  5. Choose a locksmith carefully.

    • Use an ALOA member directory or a trusted local referral.
    • Ask for the business name, the estimated service-call charge, the expected labor range, and any possible parts costs before agreeing to a visit.
    • Ask whether state or local licensing applies where you live and, if it does, ask the locksmith to show the relevant identification.
    • If drilling is proposed immediately, ask why it is needed before authorizing it.

  6. Call 911 for an immediate emergency.

    • Call 911 if someone is trying to enter, there is a fire, someone needs urgent medical help, or another situation requires immediate police, fire, or ambulance assistance.

What can wait

  • You do not need to choose a new lock system now.
  • You do not need to keep testing the lock.
  • You do not need to decide about upgrades, insurance, or reimbursement until the door is safe and the immediate problem is contained.

Important reassurance

Stopping early is useful. A locksmith can inspect the fragment and the lock without you having to solve the whole problem yourself.

Scope note

These are first steps for keeping the situation stable and reducing the chance of additional damage. Later decisions about repair, replacement, building rules, or security changes may need help from a locksmith, landlord, or property manager.

Important note

This is general information, not locksmithing, legal, safety, or other professional advice. Prioritize immediate safety and use a qualified professional when the door cannot be secured or used safely.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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