Prepare the information the authority needs
Keep a property/site plan and a measured deck sketch showing the house, boundaries, levels and stairs. Ask what structural drawings or professional review are required. Condo or strata permission, easements and neighbourhood restrictions may be separate from a building permit.
Adding electrical, gas, plumbing, a roof or heavy features can introduce additional work and approvals.
For Calgary and Alberta projects
Use the Greater Calgary guide and the actual municipality’s permit resources. Calgary, Airdrie and Cochrane publish their own application instructions; one city’s process is not a province-wide rule.
Clarify in the written scope who applies, supplies drawings and arranges inspections before setting a start date.