Key control log

Track who holds which keys, when they were issued and returned, and when locks need changing.

How to use itNumber every key, record each issue and return with signatures, and audit the log against keys on hand every quarter.

Kept byThe owner, office manager or security lead
WhenAt every key issue and return
AuditQuarterly count against the register
Keep itLocked, separate from the keys

When you need the key control log

Keys walk out the door with former employees and contractors more often than most businesses realize. A simple log shows who has what.

For master keys and sensitive areas, limit copies and use restricted key systems where possible.

13 items. Use it on screen, or print it and fill it in by hand.

Register

Key number.
Door or area.
Number of copies.
Master or single.

Issue and return

Control

Lost keys reported.
Locks changed when needed.
Quarterly audit.
Keys collected at offboarding.

Putting the key control log to work

Stamp keys with numbers, not room names.
Issue keys only with approval.
Collect keys at offboarding.
Audit quarterly.
Rekey when a master is lost.

The key control log on an ordinary week

A quarterly audit at a restaurant finds that a back-door key was never returned by a former shift lead. The lock is rekeyed and offboarding now includes a key check.

What the key control log protects you from

Keys give access to cash, stock and records, and an untracked copy can mean a former employee can still enter. A numbered register with signatures and audits shows who held access at any time and when locks need to be changed.

A filled-in key control log

Key number	K-03
Door or area	Rear delivery door
Copies and type	4 copies, single door
Holder and role	Grace, opening manager, Sunrise Bakery, Madison
Issued and signed	August 1, signed
Returned	Not returned; holder still active
Quarterly audit	November 2: all 4 copies accounted for

The audit line confirms every copy of K-03 was seen in person, not just that the log shows them issued.

Where the key control log trips people up

Storing the log in the same cabinet as the keys. Someone with access to one should not have unchecked access to both.
Lending a key for a day without writing it down. Short loans are when keys get copied or lost.
Not rekeying after a key goes missing because it is expensive. Weigh the cost against what that door protects, and act fast on masters.

Make it fit your workplace

Property managersLog keys by unit and tenant, and record every contractor or vendor sign-out with a return time.

Restaurants with many openersLimit back door keys to openers and closers and keep a sealed spare in a lockbox.

Quick winAsk each holder to sign for keys again at the yearly review. It confirms they still have them and still need them.

Key control log questions, answered

Why number keys?

So a lost key does not reveal which door it opens.

Who approves key issue?

A manager or owner.

When should locks be changed?

When keys are lost or not returned, based on risk.

Is electronic access better?

It is easier to revoke; keys still need a log.

How many master keys should a small business have?

Keep master keys to the smallest number of people who truly need access to every door, often just the owner and one manager. Each extra copy widens the risk if one is lost. Record every master by number in the register so you know exactly who holds one.

What should happen when a key is lost?

The holder reports it right away, and the log records the date and circumstances. Decide based on what the key opens whether to rekey: a lost master or exterior key usually means changing locks. Note the decision and the new key numbers in the control section.

Keep going

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General information to adapt to your business. Examples on this page are fictional.