You step outside briefly and the door closes behind you. To prepare the opening, “I forgot my keys” is only part of the story: where are they, how did the door close, and can someone else give you authorised access?
Did the door fall shut, lock with a key or lock automatically?
Describe your last action: pulling the door closed, turning a key or using an electronic control. Some doors lock automatically without a turn of the key. If you do not know the mechanism, say so; its outside appearance cannot confirm its position or the opening method.
Mention a handle that was already stiff, a broken key or impact damage. These symptoms may indicate a blocked door rather than a straightforward lockout. Keep the estimated arrival time separate from the time needed to work on the mechanism.
You have a spare, but a key is left inside
The illustration shows the inside of a closed door with a key inserted. It does not identify the cylinder’s function. ABUS describes the emergency function on some cylinders, which lets a key operate from the other side while an interior key is inserted (German source). Check whether the installed model supports this function.
If the spare will not enter or meets resistance, stop. Do not try to push out the interior key or insert another object. Tell the locksmith that you have a spare and that a key may still be in the inside cylinder.
Who can provide authorised access?
Contact the person you actually entrusted with a spare. Do not assume your landlord, building manager or neighbour has one. In an apartment building, distinguish access through the shared entrance from access to your flat. Do not climb a facade or balcony or force a window.
For a fire or immediate danger requiring emergency services, call 112 (official Belgian guidance in French). A lockout without immediate danger is a locksmith call-out; wait somewhere safe.
Information to prepare before the visit
- Exact address, floor, doorbell and access to the building.
- Where the keys may be, availability of a spare and the last action on the door.
- Door type and any visible model reference, without dismantling or forcing anything.
- Evidence of your right to enter; if documents are inside, explain this during the call to agree how access can be verified.
For our door opening service, confirm availability at your address, travel charges, any supplements and the work included. Belgium’s FPS Economy recommends a written quote before urgent repairs (French source). Our guide to avoiding locksmith scams covers checking the business.
After opening: checks and prevention
The technician explains the proposed method and any parts required before you agree. Non-destructive opening depends on the mechanism and its condition; a slammed door alone does not justify replacing the whole lock.
Have operation checked after the intervention. For a spare key, check the system’s copying conditions and choose a trusted person to keep it. A smart lock also requires compatibility, power and backup access checks; it does not eliminate every lockout risk.