By the HalfKey team
Locked out of your Tokyo apartment: what to do tonight
A key left inside, a lost key and an unresponsive keypad need different solutions. Contact the company you're renting from with the exact problem, and agree any outside call-out or lock replacement before spending money on it.
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If you're locked out of your Tokyo apartment, find the emergency contact in your check-in message and call it. Say whether the key is inside, missing, or present but not working. Include the building name, room number and a phone number where you can be reached.
Ask whether someone can bring a spare key, give you a backup code or arrange an approved locksmith, and how soon they can help.
If someone inside is in immediate danger, treat that as an emergency rather than an ordinary lockout. Otherwise, move somewhere safe to make calls and keep enough phone battery for the return call.
Explain how you’re locked out
| What happened | What to tell the company you're renting from |
|---|---|
| Key left inside | Whether the door simply closed behind you and which entrance is locked |
| Key lost | When you last had it, whether a building fob is also missing, and whether the key identifies the address |
| Physical key won't turn | Whether it is the supplied key and whether the lock appears damaged |
| Keypad or app won't respond | Lock model, any displayed message, and whether you have a physical backup key |
Send a photograph of the lock or error display if helpful, but don't post access codes in a public forum. Stop forcing a key that won't turn so you don't break it. Tell the rental company what happens when you try to turn it.
A message you can copy:
I'm locked out of [building, room]. My key is [inside / lost / not working], and I'm at [location]. Can you arrange access or confirm an approved locksmith? Please tell me any charge before sending someone. My phone number is [number].
If calling in Japanese is difficult, send the same facts through the booking channel and ask for help by message. Save the reply if the rental company agrees to an outside locksmith.
A dead keypad needs its own instructions
Don't apply a battery trick from a different lock model. Some locks have an emergency power method; others rely on a physical key or another backup arrangement. Find the model name and ask for the manufacturer's instructions or the setup guide supplied with the apartment.
Say which entrance is locked: the building entrance, your apartment door, or both. If you have a backup key, check which door it opens.
If the company suggests a battery or accessory, ask exactly which one to buy and where to connect it. Ask who will replace the internal batteries or repair the fault afterwards. You’ll need the lock to work again the next time you come home.
Get a complete locksmith quote
The National Consumer Affairs Center's November 2024 warning describes a customer who saw an unlocking price from ¥2,000 and was billed about ¥100,000 after the work. That is a reported dispute, not a typical price. Its practical advice is to check call-out and cancellation charges as well as the advertised starting fee.
Ask for the total before work starts, including tax, evening charges, parts and any drilling or replacement. Ask what you owe if you decline the on-site estimate. Send the quote to the company you're renting from if its approval is needed; don't agree to replace the lock just because a technician has arrived.
Kagizaru's published price list gives a useful example of how additions work: home unlocking starts at ¥8,800 including tax, and work from 21:00 to 07:59 adds ¥5,500. Its page also says the night charge applies when you cancel after the worker arrives.
Those starting charges add up to ¥14,300 (¥8,800 + ¥5,500), and the work on your door may cost more. Ask for a quote before agreeing.
The Japan Lock Security Cooperative's member search is one place to find businesses to contact. You’ll still need a written estimate and your rental company’s permission for any changes to the door. Explain that you're a tenant and ask what identity and address documents the locksmith needs.
If the price changes on the doorstep
Ask what changed in the proposed work and request an updated total before agreeing. If you're uncomfortable with the explanation, stop and call the company managing your apartment.
If you dispute the bill after the work, the consumer center says you shouldn't pay on the spot just because you're being pressured. Its warning explains that you may have a right to cancel after agreeing to the work, depending on how you made the contract. Contact the consumer hotline, 188, with the advertisement, quote, invoice and sequence of events; don't assume every locksmith booking is automatically cancellable.
If someone threatens you or you feel unsafe, prioritise getting help. Leave the conversation if you need to get somewhere safe.
Report a lost key
The Metropolitan Police Department accepts lost-property reports at police stations and police boxes. It also has an online reporting route. Check the current form's requirements before relying on it from your phone.
Describe the key and any fob, where it may have been lost, and how to contact you. The police's English guidance says it cannot call overseas numbers, so ask how to receive updates if you only have an overseas number.
Tell the company you're renting from promptly, especially if the lost items identify the apartment. Ask whether a building fob needs disabling and whether it wants the police report reference. Finding the key later may not undo security work already approved, so keep everyone informed before arranging replacements.
Don't call 110 for an ordinary lockout if nobody is in danger. The police guidance on 110 reserves that number for urgent incidents requiring a response.
Agree who will pay
MLIT's restoration-cost guideline says the tenant pays for replacement when a key is lost, even if the lock is old. Ask the rental company which part of your agreement makes you responsible and for a breakdown of the charge.
An unlocking visit, a replacement key, a new lock and a hotel night are separate costs. Confirm which of those costs the rental company will cover. For a lock that appears to have failed, report the fault and ask the company to arrange the repair and confirm any temporary accommodation it will cover.
If nobody responds and you need somewhere to sleep, compare a safe overnight option with the complete locksmith estimate. Keep receipts and the record of calls, but don't book on the assumption of automatic reimbursement.
Once you're back inside, confirm that you can leave and re-enter normally. Save the after-hours number in your phone, along with the company's instructions for getting help if nobody answers. The apartment emergencies guide is useful for gathering the other contacts at the same time.