The fastest way in depends on the lock type and whether you own the door

If you are locked out of your patio door, the speed of entry depends on whether the lock is a straightforward sliding bolt, a keyed deadbolt, or a modern handle lock. Homeowners can force entry without legal consequence; renters should contact their landlord first, because breaking your own door can breach your lease. The three fastest routes are: sliding the bolt from outside if it is exposed, calling a locksmith, or removing the door from its track if the frame allows it.

Do not assume you need to break glass or damage the frame. Most patio doors lock in ways that can be defeated in under five minutes with tools you likely have at home.

Key Takeaways

  • Sliding bolt locks can often be opened from outside by sliding a thin tool between the door and frame to push the bolt back.
  • If the bolt is not accessible from outside, you may be able to lift the door slightly and slide it out of its track entirely.
  • Keyed deadbolts and handle locks require a locksmith unless you can reach a key or unlock mechanism from an adjacent window.
  • Renters should call their landlord or property manager before attempting any forced entry, as damage may be charged to your security deposit.
  • A locksmith visit typically costs between $75 and $150 for a patio door, depending on your location and the lock type.

Pushing the bolt back from outside the door

Most patio doors use a straightforward sliding bolt that sits in a groove on the frame. If the bolt is visible from outside — or if there is a gap between the door and the frame — you can often push it back without tools. Stand outside the door and look at the edge where the door meets the frame. If you see a metal bolt sticking out, try pushing it straight back with your hand or a flat object.

If your hand will not fit in the gap, use a thin, flat tool: a butter knife, a paint scraper, a credit card, or a shim. Slide it into the gap between the door and frame at the height of the bolt. Push straight back toward the interior of the door. The bolt should slide into its housing and release the door. This works on roughly 60 percent of standard sliding patio doors because the bolt mechanism is not recessed deep enough to prevent outside access.

If the bolt does not move, stop. Forcing it can bend the mechanism and make the door harder to open later. Move to the next method.

Lifting the door out of its track

Patio doors sit in an upper and lower track. If the bolt will not yield, you can sometimes remove the door from the tracks entirely. This works only if the door is not bolted at the top — most are not. Stand inside if you can, or outside if you cannot. Grip the door frame firmly with both hands at the top edge.

Pull the top of the door toward you at a slight upward angle. You are trying to lift the top of the door out of the upper track. This usually requires steady pressure rather than a sudden jerk. Once the top clears the upper track, the door will tilt toward you. Slide the bottom of the door out of the lower track by pulling it toward you and slightly upward. The entire door should now be free and you can set it aside.

This method works on most standard sliding patio doors but not on doors with security bars or bolts at the top. If the door does not lift after 30 seconds of steady pressure, the top is likely bolted and this method will not work.

Calling a locksmith for keyed or handle locks

If the bolt is recessed or the door is bolted at the top, or if the lock is a keyed deadbolt or modern handle lock, a locksmith is your most reliable option. A locksmith can open the door without damage in 10 to 20 minutes. The cost is typically $75 to $150 depending on your location, the time of day, and whether you call during business hours or after hours.

When you call, tell the locksmith the door type (sliding patio door), the lock type if you know it (deadbolt, handle lock, or sliding bolt), and whether you are the owner or renter. Many locksmiths will ask for proof of residency before opening a door, so have your ID and a utility bill or lease ready. Ask for a quote before they arrive, because some charge a service call fee on top of the opening fee.

If cost is a concern, check whether your homeowner's or renter's insurance covers lockout situations. Some policies do; others do not. A call to your insurer takes five minutes and may save you the full cost.

Checking adjacent windows and doors for access

Before calling a locksmith, check whether you can reach the patio door lock from another window or door. If a nearby window is unlocked, open it and see whether you can reach the patio door bolt or handle from inside. This is especially useful if the bolt is on the interior side of the door — you may be able to push or pull it from the window opening.

If you have a sliding glass door that opens onto the patio, check whether that door is unlocked. If it is, you can walk through it and unlock the patio door from the inside. This sounds obvious but is often overlooked when someone is locked out and stressed.

What not to do

Do not break the glass unless you have no other option and the situation is urgent — for example, a child or pet is locked inside in extreme heat. Breaking glass creates sharp edges, costs $200 to $400 to replace, and is slower than the methods above. Do not use a hammer or pry bar on the frame unless you own the door and are prepared to repair damage; prying can crack the frame or bend the track, making the door unusable.

Do not attempt to pick a keyed deadbolt unless you have lockpicking experience. Most people damage the lock mechanism in the attempt, which then requires a locksmith to replace the entire lock rather than straightforward open it. If the lock is keyed, a locksmith is the right choice.

Preventing lockouts in the future

Keep a spare key to your patio door in a find location — a lockbox on the interior of your home, or with a trusted neighbor. If your patio door has a keyed lock, consider replacing it with a keyed handle lock that you can open from inside without a key, or a straightforward sliding bolt that is easier to operate. Mark the key clearly so you do not confuse it with other keys.

If you rent, ask your landlord whether they have a spare key on file. Many do, and they can let you in without cost. If you own the door, consider installing a keypad lock or a smart lock that opens with a code or phone app — these cost $100 to $300 but eliminate the risk of being locked out by a lost key.

Frequently Asked Questions

Can I use a credit card to open a patio door?

A credit card works only if the bolt is not recessed and the gap between the door and frame is wide enough to slide the card through. Slide it in at the bolt height and push straight back. This works on older or poorly fitted doors but rarely on newer ones. Do not force it — you can bend the card or damage the frame.

What if the door is bolted at the top and bottom?

If both the top and bottom are bolted, you cannot lift the door out of the track. A locksmith is your only option unless you can reach a bolt from an adjacent window. Keyed deadbolts at the top are common on security-conscious installations and are designed to prevent this method.

Will a locksmith charge extra if I call after hours?

Most locksmiths charge a higher rate for after-hours calls — typically 1.5 to 2 times the daytime rate. A $100 daytime call might cost $150 to $200 at night or on weekends. Ask for the after-hours rate when you call, and decide whether waiting until morning is an option.

Can I remove the door myself if I am renting?

Check your lease first. Removing a door, even temporarily, may be considered damage and could result in charges against your security deposit. Call your landlord or property manager and explain the situation. Most will either let you in or send a maintenance person to do it. Attempting removal without permission can be grounds for eviction.

What should I do if the lock is broken, not just locked?

If the bolt will not move or the handle is stuck, the lock mechanism may be damaged rather than straightforward engaged. A locksmith can assess whether the lock can be opened or must be replaced. Replacement locks for patio doors cost $50 to $150 plus labor. If you rent, contact your landlord when ready — they are responsible for providing a working lock.