Leaside Lock ExpertsBulletin 2 of 3Toronto, Ontario
Lost Keys — Same-Visit Rekey: comparing quotes
It is good practice whenever a key has been out of your hands for a while and you are not certain it came back.

It is good practice whenever a key has been out of your hands for a while and you are not certain it came back. Contractors, cleaners, sitters and short-term guests all have honest reasons to hold a key, and most return it, but a rekey at the end of the arrangement is what turns 'probably' into certainty. Some households make it a habit at the close of every project.
Paperwork for a landlord or building
Where a landlord, condominium or lease requires a written record of the lock change and key count, preparing that note and any key register update is a small named item.
Condition of the cylinders
A clean, healthy cylinder is repinned as is. One clogged with salt and grit is cleaned first, and a worn or damaged one is replaced rather than repinned, each priced as its own item.
Upgrades chosen during the visit
Some people take the moment to move to a heavier deadbolt, a restricted keyway, a reinforced strike or a lockbox for the spare. None of it is required; each option is a separate line.