Addendum
A document added to the contract package, usually at or before signing.
What it means
An addendum is an additional document attached to a contract that adds terms or information — extra scope details, disclosures, special conditions — usually at or before signing, as part of the original package. It differs from an amendment, which changes a contract the parties have already signed. To be binding, an addendum should be referenced in the contract or signed the same way the rest of the agreement is.
Why it matters before you sign
An addendum carries terms just as binding as anything in the main document — read every attached page as carefully as page one.
In a contract, it looks like this
The parties signed Addendum A, which added the appliance package and delivery schedule to the purchase agreement.
This definition is a general, educational explanation — not legal advice. XOsign provides AI-assisted document tools and does not provide legal advice; consider consulting a qualified attorney for guidance on your specific situation. Requirements vary by state.
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