Addendum

A formal supplement or revision to bidding or procurement documents, typically issued before the contract is executed.

Why it matters

Confirm whether pricing acknowledges all applicable addenda. Missing a revision at bid time can create an avoidable scope and budget dispute later.

In practice

A project example

An addendum changes the glazing requirements, but one proposal still reflects the earlier specification.

General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.