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.

Related terms

Not sure where this fits in your process?

Answer a few questions and get a personalized homebuying roadmap: where you are now, what comes next, and which terms like this one matter at each step.

Start your roadmap