Restaurants, cafés, and commercial kitchens often require detailed mechanical and electrical coordination. A restaurant project is not only about the architectural layout. The space also needs proper HVAC, plumbing, drainage, fire protection, and electrical design.

Whether you are opening a new restaurant, renovating an existing unit, or changing the use of a commercial space, permit drawings may be required before construction can begin.

At RN Engineering, we prepare mechanical and electrical permit drawings for restaurant and commercial projects across Ontario.

Why Restaurant Projects Need Careful Design

Restaurant spaces usually include more equipment and building system requirements than a regular office or retail unit.

A restaurant may include:

Cooking equipment
Kitchen exhaust systems
Make-up air requirements
Washrooms
Hand sinks
Kitchen sinks
Floor drains
Grease or oil interceptor coordination
Refrigeration equipment
Fire suppression coordination
Lighting and power design
Fire alarm coordination

Because many systems need to work together, coordination is very important.

HVAC Design for Restaurants

HVAC design is one of the most important parts of a restaurant project. Restaurants may need heating, cooling, ventilation, kitchen exhaust, and make-up air coordination.

HVAC drawings may include:

Supply air layout
Return air layout
Exhaust air layout
Kitchen exhaust coordination
Make-up air coordination
Ductwork layout
Diffuser and grille locations
Equipment schedules
Thermostat locations
Mechanical notes

Poor HVAC design can lead to comfort problems, odour issues, pressure imbalance, and poor system performance.

Plumbing and Drainage Design

Restaurants usually require more plumbing coordination than many other commercial spaces.

Plumbing and drainage drawings may include:

Domestic cold water piping
Domestic hot water piping
Sanitary drainage
Vent piping
Floor drains
Kitchen sinks
Hand sinks
Mop sinks
Washroom fixtures
Grease or oil interceptor coordination
Plumbing riser diagrams

A clear plumbing design helps contractors understand the scope and helps support the permit submission.

Fire Protection Coordination

Fire protection is also important in restaurant projects, especially where cooking equipment, new partitions, ceilings, or sprinkler changes are involved.

Fire protection items may include:

Sprinkler coordination
Fire suppression coordination
Fire alarm coordination
Review of existing fire protection systems
Coordination with ceiling layout
Coordination with kitchen equipment

Depending on the building and project scope, additional fire protection review may be required.

Electrical Design for Restaurants

Restaurants often have specific electrical requirements because of kitchen equipment, lighting, refrigeration, exhaust fans, make-up air equipment, and general power needs.

Electrical drawings may include:

Lighting layout
Power layout
Equipment connections
Panel schedules
Load calculations
Emergency lighting
Exit signage
Fire alarm coordination

Electrical design should be coordinated with the kitchen equipment list and architectural layout.

Common Restaurant Permit Problems

Restaurant permit applications can be delayed when mechanical and electrical information is missing or unclear.

Common issues include:

Kitchen exhaust not shown
Make-up air not addressed
Plumbing riser diagram missing
Grease or oil interceptor coordination missing
Electrical equipment loads not shown
Fire protection scope unclear
Drawings not coordinated with architectural plans
Equipment layout changes after design starts

These issues can create permit comments and construction delays.

Projects RN Engineering Can Support

RN Engineering can support:

Restaurants
Cafés
Commercial kitchens
Take-out units
Bakeries
Food preparation spaces
Coffee shops
Small food businesses
Tenant fit-outs
Change of use projects

We prepare mechanical and electrical drawings using AutoCAD and Revit for permit and construction purposes.

Need Restaurant Permit Drawings?

If you are opening or renovating a restaurant, café, or commercial kitchen in Ontario, RN Engineering can help with mechanical and electrical design.

You can get a quote by visiting www.rnengineering.ca and filling out our form, or sending a WhatsApp message / calling 437-427-0102.