Interior Renovation Permit Drawings in Ontario
Ontario Design Studio prepares BCIN-certified permit drawings for interior renovations that require a building permit. Not every interior renovation needs a permit — but many common projects do, especially those involving structural changes, plumbing relocation, electrical upgrades, or changes to the building's layout.
When Does an Interior Renovation Need a Permit?
- Moving or removing walls — especially load bearing walls
- Relocating plumbing fixtures (kitchen, bathroom)
- Adding or removing rooms
- Changing the use of a space (e.g., garage to living area)
- Upgrading electrical service or panels
- Installing new windows or changing window sizes in exterior walls
- Converting unfinished space (attic, basement) to habitable space
Read our complete guide: Do I Need a Permit for My Renovation in Ontario?
{CTA_BLOCK}Our Drawing Package
Existing and proposed floor plans, structural details where required, cross-sections, and all necessary OBC compliance documentation. For projects involving load bearing wall removal, we coordinate with a P.Eng structural engineer.
Related Resources
- Building Permit Drawing Cost Guide
- How the Ontario Permit Process Works
- How to Legalize Unpermitted Work in Ontario
Frequently Asked Questions
When does an interior renovation need a building permit in Ontario?
You need a permit when: moving or removing walls (especially load bearing), relocating plumbing fixtures, adding or removing rooms, changing the use of a space, upgrading electrical service, or installing new windows or changing window sizes. Cosmetic changes like painting, flooring, and cabinet replacement typically don't need a permit.