ContractsHomebuying Glossary

Addendum

A written amendment adding to or changing the terms of an existing contract.

In plain English

An addendum modifies or adds to the original purchase agreement — commonly used for repair agreements, financing changes, or closing date extensions — and must be signed by both parties to take effect.

Why it matters

Any change to your original agreement should go through a proper addendum, not just a verbal or informal understanding.

Where you'll run into it

Guides and tools on TheBuyingPath that cover addendum in context.

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