The building isn’t handed over when the keys change hands. It’s handed over when the deficiency list, the closeout documents and the clearances are all closed at the same time.
Short answer
A clean handover means the paperwork closes at the same moment as the physical walkthrough: the deficiency list is signed off, the warranty and O&M package is assembled, and the trades who need a current clearance certificate have one on file before the final holdback releases.
The standard prime contract used across most of the country builds a specific moment into the process for exactly this. CCDC 2 – 2020 describes itself as covering, among other things, “prerequisites for Ready-for-Takeover”, alongside “the role and authority of the consultant” and “early occupancy by the Owner”. The clause text itself is sold, not published -- CCDC's own document page won't hand you a checklist -- but the shape of the moment is well established in practice: a completed deficiency list, the contract administrator's sign-off, and the documents the owner needs to actually operate the building starting day one.
On a residential job the deadline that actually matters is a warranty clock, not a handover date. Tarion's own coverage page is explicit: coverage “begins when you sign the Agreement of Purchase & Sale, and remains in effect for up to 7 years” -- and that protection follows the home through a resale, not just the original buyer. Which means the O&M manuals, appliance documentation and as-built drawings assembled at closeout aren't paperwork for its own sake; they're what an owner or a condo board reaches for the first time something goes wrong in year four, long after the crew has moved on.
Track the closeout submittals the way a document-control tool does rather than by memory. Bluebeam's interactive Submittal Status stamp records “Submittal status, Reviewer, Date, Submittal number, Spec number” against each item, with statuses of Approved, Rejected or Revise -- and once the stamp is placed, the content entered in it can't be changed, so a reviewer can't quietly re-open a call after the fact. That closes the same kind of loop for O&M manuals and warranty binders that a punch list closes for physical deficiencies.
Before the final holdback releases, confirm a current WSIB clearance is actually on file. In Ontario a clearance number “is valid for all your contracts” and is “valid for up to 90 days”, and it lapses the moment the account falls behind on either payments or reporting. A lapsed clearance at the exact moment you need the final payment to close the file is a self-inflicted delay, and an easy one to avoid by checking it a week ahead rather than the day of.
For what to do with the closeout file once it's assembled, see which project records outlive the job and who keeps the as-builts.
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