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Restaurants

Opening a Restaurant in Ontario: The Build-Out Roadmap from Lease to Opening Day

Zoning, exhaust and fire suppression, grease interceptors, public health and the order to tackle them in.

Published October 17, 2026 · 6 min read · Harborline Sterling Construction Inc.

Restaurants are among the most demanding commercial spaces to build. Kitchen systems, health requirements and a fixed opening date leave little room for surprises. Here is the order that keeps a restaurant build-out on track.

1. Confirm the location works

Check that zoning permits a restaurant at the address, and that parking requirements can be met. If the unit was previously retail or office, converting it to a restaurant is usually a change of use, which triggers Building Code review.

2. Read the lease for kitchen infrastructure

  • Gas service and capacity, and the route for new gas piping
  • Electrical capacity for cooking, refrigeration and HVAC
  • A path for the kitchen exhaust duct to the roof
  • Space and connections for a grease interceptor
  • Landlord rules on roof penetrations, odours and after-hours work

3. Design around the menu

The menu drives the kitchen equipment, and the equipment drives exhaust, gas, power, plumbing and refrigeration. Seating drives occupant load, which in turn affects exits, washrooms and barrier-free requirements.

4. Permits

Expect a building permit, often including mechanical work for the kitchen exhaust, and a separate sign permit. Gas work is done by licensed gas technicians, under rules overseen by the Technical Standards and Safety Authority.

5. Kitchen exhaust and fire suppression

Commercial cooking equipment needs a properly designed hood, exhaust ductwork with the required clearances and fire separations, make-up air, and a fire suppression system. These are often the critical path, so order equipment early.

6. Grease management

Municipal sewer-use bylaws require grease interceptors for food service. In Toronto, for example, the Sewers By-law requires food service establishments to install, operate and maintain a grease interceptor, with significant fines for non-compliance.

7. Public health

Under Ontario's Food Premises regulation, operators must notify the local medical officer of health before opening, and premises are inspected by the local public health unit. Plan finishes, sinks and storage so the space is ready for inspection, and remember a trained food handler must be on site during operating hours.

8. Liquor licensing

If you will serve alcohol, you need a liquor sales licence from the Alcohol and Gaming Commission of Ontario. Build its timeline into your opening plan.

9. Final inspections and opening

Building, fire and public health sign-offs come before opening. Leave time for a deficiency walk-through, equipment start-up and staff training.

Talk to usPlanning a restaurant? We can review a space with you before you sign the lease and flag the costs that are easy to miss.

This article is general information, not legal or professional advice. Requirements change, so confirm details with the relevant authority or your advisors.

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