Lock broken or key stuck
Avoid forcing the key. For an insecure external door, prioritise same-day security.
What to do first
- Limit further damage where this can be done safely.
- Photograph the issue and note when it started.
- Arrange prompt professional assessment if the cause is unclear.
What could be behind it
- Hinge/alignment movement
- Lock/latch wear
- Frame swelling or movement
These are common possibilities, not a diagnosis of your specific home.
When to stop doing it yourself
Stop if you are unsure of the cause, cannot isolate the system safely, need to open fixed electrical/gas equipment, work at height, disturb hidden building fabric, or the problem is getting worse.
QUOTE CHECK
Typical quote components
- Call-out
- Cylinder/lock
- Labour
PARTS / TOOLS
Possible items involved
Do not buy parts until the cause is confirmed.
How to describe it to a professional
The lock is damaged and the door is not secure.
NEXT STEP
Move from symptom to action.
Compare the right service, understand the quote and keep the completed work in My Home.