Commercial building permit timelines in Ontario vary by municipality, project complexity, and completeness of your application. Here's what to expect based on our experience across Ontario municipalities.
Typical Commercial Permit Timelines
- Small tenant fit-out: 15–25 business days
- Restaurant/food service: 20–35 business days (additional health department review)
- Office renovation: 15–25 business days
- New commercial construction: 30–60+ business days
- Change of use: 20–40 business days
How to Speed Up the Process
Submit complete, OBC-compliant drawings the first time. Respond quickly to deficiency notices. Work with an experienced BCIN-certified designer like Ontario Design Studio who understands commercial OBC Part 3 requirements.
Why Commercial Permits Take Longer Than Residential
Commercial projects usually fall under OBC Part 3, which brings heavier obligations: occupancy-load calculations, exiting and fire separations, barrier-free accessibility, and coordinated mechanical, electrical, and plumbing design. Larger projects are also reviewed by multiple people at the city (building, plumbing, mechanical, sometimes planning), and each discipline can raise its own comments - so the review naturally takes longer than a house.
Approvals Beyond the Building Permit
Commercial timelines often stretch because the building permit is not the only approval:
- Restaurants and food service need public health review for the kitchen, plus fire approval for the hood and grease exhaust
- Electrical work is reviewed by the ESA, and gas by the TSSA
- New buildings may need site plan approval before the building permit
- Mechanical systems may require separate MEP drawings
Running these in parallel where possible is the key to keeping the overall schedule short.
The Two Phases of the Timeline
As with residential, the total is two clocks: drawing preparation (typically two to four weeks for a commercial fit-out, depending on how much MEP and structural coordination is involved) and municipal review. A complete, well-coordinated submission is the single biggest lever on the review phase.
What Delays Commercial Permits Most
- Incomplete life-safety or occupancy-load information
- Missing or uncoordinated mechanical and electrical drawings
- Change-of-use surprises (the new use triggers upgrades the tenant did not expect)
- Barrier-free deficiencies in washrooms and entrances
Ready to get started?
Call 416-558-9607 for a free consultation or request a quote online.