What type of document is an addendum considered?

An addendum is classified as a supplementary agreement because it serves to modify or add to the terms of an original contract without replacing the entire agreement. It allows parties to include additional information, conditions, or changes while maintaining the integrity of the original document.

This supplementary nature is critical in real estate transactions, as it can address new contingencies, provide clarifications, or outline additional obligations that were not initially included. By framing the addendum as a supplementary agreement, it highlights that it is intended to complement the existing contract rather than function as a standalone or separate contract. This distinction is important in legal contexts to ensure that all parties are aware of and agree to the modifications made through the addendum, preserving the enforceability of the original contract while enhancing its details.