Building or renovating a restaurant in Ontario is an exciting venture — but before you start installing commercial ranges or laying out seating plans, you’ll need to navigate a long list of permits, codes, and approvals.
At Diamond Builders Group, we’ve helped restaurant owners and franchise operators across the GTA and Simcoe Region bring their visions to life — safely, legally, and efficiently.
Here’s what you need to know before construction begins.
🏗️ 1. Building Permit
Every restaurant project — whether it’s a brand-new build, an interior fit-out, or a renovation — requires a building permit from your municipality.
You’ll need to submit:
- Architectural and mechanical drawings
- HVAC, plumbing, and electrical plans
- Site plans and occupancy details
Average approval time: 2–6 weeks (varies by municipality)
Typical cost: $2,000–$8,000 depending on project size
💡 Tip: A complete, code-compliant submission prepared by your contractor or architect helps prevent costly rejections and delays.
🔥 2. Fire Department Approval
Restaurant spaces are considered high-risk occupancies, so fire safety is non-negotiable.
You’ll likely need:
- Fire-rated walls and ceilings
- Fire suppression systems for cooking areas
- Emergency lighting and exit signage
- Accessible fire extinguishers and sprinklers
Some municipalities require a Fire Inspection Certificate before you can open your doors.
Common oversight: Forgetting to upgrade or integrate an existing suppression system — a mistake that can delay opening by weeks.
🧯 3. Health Department Inspection
Every restaurant must pass a public health inspection before operating.
In Ontario, local Public Health Units enforce regulations under the Health Protection and Promotion Act.
Inspectors look for:
- Handwashing and dishwashing stations
- Food-safe surfaces and materials
- Proper waste and grease disposal systems
- Pest prevention measures
💡 Tip: Plan your layout early to meet public health flow requirements — for example, food prep must be separated from wash stations.
⚡ 4. Electrical & HVAC Permits
Restaurants demand more power and ventilation than most commercial spaces.
You may need:
- ESA (Electrical Safety Authority) permit for wiring, lighting, and panels
- HVAC permit for make-up air units, grease hoods, and exhaust ducts
These systems are often inspected separately and must comply with both the Ontario Electrical Code and Mechanical Code.
💧 5. Plumbing & Grease Trap Permits
Commercial kitchens produce a lot of wastewater and grease. Municipalities require:
- Plumbing permits for all new fixtures
- Grease interceptor (trap) installation
- Proof of maintenance contracts with waste haulers
💧 Pro tip: Always verify your grease trap size with your municipality before installation — undersized systems are one of the most common reasons for permit rejections.
🪜 6. Sign & Patio Permits (Optional but Common)
If you plan to install outdoor signage, lighting, or a seasonal patio:
- Apply for a Sign Permit (size, lighting, placement are regulated)
- Apply for a Patio Permit (especially in downtown or high-traffic areas)
🧾 Checklist: Common Restaurant Permits in Ontario
| Permit Type | Issued By | Required For |
|---|---|---|
| Building Permit | Municipality | Construction, renovations, change of use |
| Health Permit | Local Public Health Unit | Food service operations |
| Fire Approval | Fire Department | Fire suppression, exits, safety systems |
| Electrical Permit | ESA | New electrical work |
| HVAC / Mechanical | Municipality | Ventilation, exhaust, make-up air |
| Plumbing Permit | Municipality | Sinks, dishwashers, grease traps |
| Sign / Patio Permit | Municipality | Exterior branding or outdoor seating |
🧭 How to Simplify the Process
Restaurant projects can involve five or more agencies, and each step can cause costly delays if handled separately.
That’s why smart owners use a design-build contractor who manages permits and compliance under one roof.
Diamond Builders Group handles:
- Permit drawings and submissions
- Coordination with local officials
- Health, fire, and ESA compliance
- End-to-end construction and project management
🍽️ Final Thoughts
Getting your restaurant from concept to completion takes more than great food — it takes a clear plan, detailed drawings, and an experienced builder who knows the Ontario permit landscape inside and out.
At Diamond Builders Group, we specialize in restaurant construction and renovations throughout the GTA and Simcoe Region — helping entrepreneurs open faster and stay compliant from day one.
👉 Ready to start your restaurant project?
Let’s talk permits, planning, and build timelines.
Book a consultation with our commercial construction team today.
