Canada · Building code

Who can stamp building design drawings in Canada?

In Canada, building permit drawings must be sealed by an architect, professional engineer, or — for limited residential and small-building scope — a qualified designer registered with the applicable provincial regulator, with scope rules set by each province.

Stamping authority is one of the first questions a Canadian project needs to answer because it controls who can prepare and submit drawings. Provincial professional regulation, not the building code itself, is what determines who is qualified.

What to check first

  • Identify whether the project sits in Part 9 (small buildings) or Part 3 (large buildings) scope.
  • Confirm which professional regulator governs at the project location.
  • Match the project complexity to the appropriate designation: architect, engineer, or registered designer.

Jurisdiction notes

Provincial regulators decide

Each province has its own architects act, engineers act, and designer registration program that controls scope of practice.

Ontario uses BCIN

Ontario requires a qualified person with a Building Code Identification Number for many small-building submissions, alongside architects and engineers for in-scope work.

Reciprocity is limited

A designation in one province does not automatically authorize practice in another; check mobility agreements first.

Not professional advice

CodeCan reports what the published building code says. It is not legal, engineering, or architectural advice, and it does not certify compliance. Building codes are adopted and amended provincially and enforced locally — always verify with your authority having jurisdiction (AHJ) before you build.

Work through it in this order

  1. Classify the project by occupancy, size, and any Part 3 triggers.
  2. Confirm which professional designation is required at the project location.
  3. Engage a sealed-drawing professional early enough to influence design decisions.
  4. Document the scope of work each sealing professional is taking responsibility for.
  5. Verify that the regulator's seal will be acceptable to the permit-issuing authority.

Common questions

Can a designer stamp Part 3 drawings?

Generally no. Part 3 buildings typically require an architect and registered professional engineer.

What is BCIN?

Ontario's Building Code Identification Number is a province-specific qualification system for designers working on smaller buildings.

Can an architect from one province practice in another?

Only with the right registration. Mobility agreements exist, but designations are not automatic.