Commercial-Grade Lock Replacement: questions about the price

A mortise lock has its whole mechanism, latch, deadbolt and sometimes a separate handle function, built into one case that sits inside a pocket cut into the door's edge. A cylindrical lockset is a bored-in unit, simpler to service, common on standard commercial and residential doors alike. Which one your door takes depends on how it was originally prepped, not on preference alone.

Type of hardware the door takes

A mortise lock body, a heavy cylindrical lockset and a narrow-stile lock or hookbolt are priced differently as hardware and take different amounts of labour to fit, so the quote follows what the door's own construction requires.

Panic or exit hardware

Listed exit devices cost more than a standard lockset and are quoted per opening, since a route requiring this hardware often needs it consistently across more than one door along that path.

Key-control documentation

Setting up or updating a written key-control log, recording who holds which key and which doors share a system, is a small but distinct task the quote can name separately from the physical hardware work.