Do you need stamped drawings for a building permit?
The short answer
Often yes for commercial and larger projects, and sometimes no for small residential or cosmetic work. Whether stamped drawings are required depends on your province, your municipality, the type and size of the building and the scope of the work.
What stamping means
A stamp, or seal, shows that a registered architect or engineer has reviewed the drawings and accepts professional responsibility for them. It tells the permit authority that a qualified professional has signed off on the design.
What usually decides it
- Type of building. Commercial, restaurant and multi-unit projects are more likely to need stamped drawings than a small single-family renovation.
- Size and occupancy. Larger buildings and higher occupancies have stricter requirements.
- Scope of work. Changes to structure, fire separations or building systems often require professional involvement.
- Provincial and local rules. Provinces regulate which work must be designed by registered professionals, and municipalities list their own submission requirements.
How to find out for your project
Start with the permit authority's application checklist, or ask the permit office what it requires for your scope. If you are unsure, contact us with a short description and we will confirm what applies before you spend money on drawings.
Next step
If your project needs sealed drawings, see our architectural and MEP stamping service, or contact us for a free consultation.