How a Code Transition Period Works

A code changeover is announced well before it happens, which sounds orderly and produces a genuinely awkward period. For months, two editions are relevant at once: the one in force and the one about to be, and projects in design have to pick a target.

The mechanism is the same everywhere even though the dates are not. A province announces adoption, sets an effective date, and publishes a transition rule saying which projects fall under which edition.

Ontario’s adoption of an updated edition is a recent example, and the pattern generalises. What follows is about the mechanics rather than the technical content, because the content differs by province and the mechanics do not.

Which date decides#

The common rule is that a complete application received before the effective date is assessed under the previous edition. The word doing the work there is complete. An application returned as incomplete and resubmitted after the date can land under the new edition, which is a reason to submit carefully rather than quickly.

Preparing for a changeover#

1. 1

   Find the effective date and the transition rule

   Both are published, usually together, and the rule is short. It tells you what fixes the applicable edition.

2. 2

   Work out what changes for your work

   Most changes will not touch what you build. Identify the handful that do, from the published change summary rather than by reading the code.

3. 3

   Decide which side you want to be on

   For each project in the pipeline, work out whether the new edition helps, hurts or is neutral, and schedule the application accordingly.

4. 4

   Make in-flight applications complete

   An application that comes back for missing information can lose its place on the calendar. Completeness matters more during a transition than at any other time.

5. 5

   Watch permit expiry on stalled projects

   A permit that lapses and has to be reapplied for after the date is a new application under the new edition.

Departments feel this too. The weeks before an effective date bring a surge of applications from people trying to get in under the old edition, and queues lengthen accordingly. Submitting early in that window rather than in the final days is worth something on its own.

Projects already under way#

A project with a permit in hand generally continues under the edition it was assessed against, and that protection is not unconditional. Permits carry expiry provisions, and a project that stops for long enough can find itself needing a fresh application.

Long projects are where this bites. A development permitted before a changeover and built over three years can outlive the edition it was designed under, and any additional permit taken out along the way arrives on its own date.

Phased work is the other case to think about. A permit for a foundation followed by a separate permit for the superstructure means the second application is made on its own date, and if that falls after the changeover it is assessed under the new edition even though the first was not.

Where a project spans an effective date, it is worth writing down which edition each permit was issued under and keeping it with the drawings. Two years later, when an inspector asks why an assembly is detailed a particular way, that note is the answer.

Common questions#

Can I choose which edition to build under?

Sometimes during a transition window, and it depends on the province’s rule. Where a choice exists it is usually exercised by when you apply rather than by asking.

What counts as a complete application?

The department’s own checklist defines it, and that is the document to work from. Completeness is what the transition rule usually turns on.

Does an issued permit protect me indefinitely?

No. Permits lapse if work does not start or stalls, and a lapsed permit reapplied for later is assessed under whatever is then in force.

What if I revise my drawings after the date?

Minor revisions are normally fine. Substantial changes can be treated as a new application, which would bring the new edition with them.

Do all provinces adopt at once?

No, and they never have. Each sets its own date, which is why requirements differ across the country for years after a model edition is published.

Where do I find the change summary?

The province usually publishes one at adoption, and industry associations circulate their own. Both are faster than comparing two editions of the code.