TL;DR
Substantial completion is the contractual milestone at which a project is usable for its intended purpose even though punch-list items remain, certified in writing by the architect or agreed between owner and contractor. The date carries legal weight: warranties typically start, retainage becomes due, liquidated damages stop accruing, and responsibility for utilities and insurance often shifts to the owner.
What it means
Substantial completion is the contractual milestone at which a project is usable for its intended purpose even though punch-list items remain, certified in writing by the architect or agreed between owner and contractor. The date carries legal weight: warranties typically start, retainage becomes due, liquidated damages stop accruing, and responsibility for utilities and insurance often shifts to the owner. Disputes over whether it has occurred usually hinge on the certificate of occupancy and whether remaining defects prevent normal use.
Where it sits in the glossary
Substantial completion 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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