C'mon guys, don't be absurd... the electrical code doesn't say you need a permit to replace a light bulb.
The point of making you apply for a BP for a shed over 10 sqm is so that you are complying with the lot coverage and setback requirements in the Land Use Bylaw. Is a packaged pergola from Costco likely to fall over? No, but some hillbilly lean-to may be a hazard.