A sticking lock needs a closer look.

The symptom helps identify the next step.

If a key does not turn, the key or cylinder may need attention. If it turns but the bolt does not engage, the door, frame or hardware may be involved. Tell us whether the problem is constant or only happens when the door is closed.

A lock that becomes difficult to operate is worth addressing before it leaves you locked out. Avoid forcing a reluctant key; explain any existing damage when you call.

Broken key in the lock

Tell us whether part of the key remains visible and whether you have another working key. Removing a broken piece and restoring normal operation may be separate steps if the cylinder is damaged. Call to discuss extraction and repair for the particular lock.

Repair, rekey or replace?

Repair addresses a fault. Rekeying changes which key works. Replacement changes the hardware. Rekeying alone does not resolve a damaged latch or a poorly fitting door.

For an older door, mention if keeping the existing handle or finish matters. The condition and availability of compatible components affect the options.