TL;DR
An addendum is a written change or clarification issued to bidding documents before a construction contract is signed, modifying the original plans or specifications for every bidder at once. It differs from a change order, which alters the contract after signing.
What it means
An addendum is a written change or clarification issued to bidding documents before a construction contract is signed, modifying the original plans or specifications for every bidder at once. It differs from a change order, which alters the contract after signing. Each one is numbered and dated, and bid forms typically require contractors to acknowledge all addenda received so no one prices outdated drawings. Homeowners comparing bids should confirm every contractor priced the same final set, including these revisions.
Where it sits in the glossary
Addendum is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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