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Glossary

What is contract addendum?

A contract addendum is a document added to an existing contract that adds new terms or detail, such as a new service, location or schedule, without rewriting the original agreement.

Addendum versus amendment

An addendum usually adds something that was not covered. An amendment changes terms that were already agreed, such as price or term. In practice the words are often used loosely, so read what the document actually does.

Examples

  • Adding a new site or service to a supply agreement
  • Attaching a data processing schedule
  • Extending the scope of a statement of work

Why it matters

An addendum is part of the contract. If it is filed separately, people read the original and miss terms that now apply. Contractflow links every addendum and amendment to the parent contract and Aavenir AI reads them together, so the current terms are always clear.

Frequently asked questions (FAQ)

Common questions

Is a contract addendum legally binding?

Yes. When it is properly agreed and signed by the parties, an addendum becomes part of the contract and its terms apply alongside the original agreement. This is general information, not legal advice. See Contractflow.

What is the difference between an addendum and an amendment?

An addendum adds terms that were not covered, such as a new service or site. An amendment changes terms already agreed, such as the price or the term. Read what the document actually does. Read about master service agreements.

Where should an addendum be stored?

On the same record as the parent contract, so anyone reading the contract sees every addendum and amendment with it. AI that reads the documents together then reports the terms that actually apply. See Avy.

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