Project template
Your preparation checklist
Use it as a working list. The final submission still needs to match your actual scope and the City’s current requirements.
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What to do next
- Check zoning feasibility
- Define the addition footprint and use
- Prepare the architectural and structural package
- Submit before construction starts
Official sources behind this page
AdditionBuilding permit required
Ottawa states that construction of an addition requires a building permit under the Building Code Act.
City of OttawaAddition · Building permit requirement and addition examples
2026-10-01Open proof
ExamplesIncludes attached garages, porches and storey additions
Ottawa lists sunrooms, solariums, attached garages, porches, and one- and two-storey additions as examples.
City of OttawaAddition · Building permit requirement and addition examples
2026-10-01Open proof
ZoningProperty-specific
Ottawa Development Information Officers can advise on setbacks, height and lot coverage that affect a new structure or addition.
City of OttawaAddition · Building permit requirement and addition examples
2026-10-01Open proof
Need the full project answer?
The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.
Open the home addition guide