Plan the stages separately
The published period is not the whole project.
Ottawa lists an approximate first-review timeline of 5 business days for detached garages and sheds under its enhanced service level.
Official sources behind this page
Ottawa states that a one-storey detached storage shed up to 15 m², ancillary to the principal building and without plumbing, does not require a building permit.
Ottawa says accessory building types outside the listed storage-shed exemption can require a permit when the area is greater than 10 m².
Ottawa notes that permit-exempt projects still need to comply with applicable law such as the Zoning By-law. Development Information Officers can advise on setbacks, height and lot coverage.
Need the full project answer?
The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.
Open the shed / accessory structure guide