Mechanical & Electrical · Mississauga, Peel Region
HVAC, plumbing and electrical design for Mississauga houses and commercial units: heat-loss and duct design for basement units, additions and teardown rebuilds, a separate system for a garden suite, and fire-safety design for a change of use, by our Richmond Hill P.Eng and BCIN team and uploaded through ePlans.
What’s included
Mechanical and electrical sheets are drawn from the same plans as the structural ones, in the same office. Ducts do not fight beams for joist space, and the examiner reads one coordinated set. In Mississauga the package goes to the City of Mississauga Planning and Building Department, and it is drawn to that department’s checklist.
Heating & cooling
Heat-loss and heat-gain calculations, equipment sizing and duct layouts that meet the Ontario Building Code and get through permit review.
Supply & drainage
Water distribution, drain, waste and vent layouts, fixture placement and hot-water sizing for houses, second units and commercial fit-outs.
Power & lighting
Load calculations, panel schedules and lighting and alarm distribution, coordinated with the mechanical loads and the building permit package.
Life safety
Fire alarm, sprinkler, emergency lighting and exit-sign design for occupant safety and code compliance, drawn with the permit set so the fire department reviews one package.
The package
Find your situation below. If it’s there, this is the service, and the card underneath is everything you get from our one office.
07 common situations
07
items in your package, all from one P.Eng and BCIN team.
Drawn & stamped in-house
How it runs
Four steps that run alongside the building permit, not after it. The mechanical sheet is drawn from the same plans the structural sheet is, so nothing fights for the same joist space.
We take the architectural drawings, the insulation and window specifications, and for an existing building a look at the mechanical room and the panel.
Room-by-room heat loss and gain to CSA F280, plumbing fixture units and electrical demand, so equipment is sized to the building rather than to a rule of thumb.
Ducts, pipes and circuits are routed against the structure, and clashes are resolved on paper before a trade finds them on site.
Sheets are stamped and submitted with the permit; we answer the examiner’s mechanical comments at no extra charge and stay available to the installing trades during construction.
Case files
Open any file for the scope, the disciplines involved, what we delivered and what the owner came away with.
A compact two-storey suite in a Toronto backyard. Architectural and structural drawings, zoning review and a framing package that makes every square foot count.
Delivered
New living space on a lot the owners already had.
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Structural walls came out and rooms were added to open the plan. Beam and column design, permit drawings and renovation coordination through to final inspection.
Delivered
An open layout where the load-bearing walls used to be.
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A code-compliant second unit with its own entrance, fire separations between the units, HVAC design and the full permit package.
Delivered
A legal second unit that brings in rent and adds property value.
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A new build taken from the client’s sketch to occupancy, with the architectural, structural and mechanical design done by one team.
Delivered
Built to the client’s own plan, with one team answering for every discipline.
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A two-storey garden suite laid out to get the most usable space from the footprint, designed and permitted as a rentable unit.
Delivered
Rental income and a higher property value.
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A dental office converted into a supermarket. Interior renovation, a new plumbing system and fire separations upgraded to the Ontario Fire Code.
Delivered
A dental office reopened as a supermarket, compliant with the Ontario Fire Code.
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A custom covered porch that turns the front of the house into usable outdoor space. Addition design and structural drawings for the permit.
Delivered
More usable outdoor space and added home value.
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Site grading to manage drainage and prepare the land for a new driveway, drawn as a grading plan for the site alteration permit.
Delivered
Drainage handled and the land ready for a new driveway.
Start a project like thisPhoto plates
Additions, basements, kitchens, new builds and commercial fit-outs. Drag a row to scrub through it, or open any photo full size.Tap any photo to see it full size.
21 platesResidential, commercial & new build
The drawing set
Framing schedules, wall assemblies, dimensions and a city review stamp, as issued. Client title blocks are trimmed off to protect the people we drew them for.
Drawing set
Sheets in this set
Sheet title
Existing basement plan
The existing house recorded before any design: beams, joists and bearing walls.
Drawing no.
2 of 5
Service area
From the office we cover the whole GTA, north to Barrie and Orillia, east to Peterborough and Cobourg, west to Kitchener and Brantford, and down through Niagara.
46 across 8 regions
York Region
Toronto & Peel
Halton
Durham
Simcoe & Dufferin
Waterloo, Wellington & Brant
Hamilton, Niagara & Haldimand
Kawarthas & Northumberland
Past the 90-minute line
We've also completed projects in London and Strathroy. Farther out than that? Call (416) 990-9179 and ask.
Permits filed with municipalities including
Before you call
Anything we haven’t answered here, we’ll answer on a call. The first consultation is free.
(416) 990-9179Where the permit adds or changes heating, as with a new house, an addition or a second unit, yes: Ontario’s Building Code sizes heating from a calculated load, and the City of Mississauga Planning and Building Department reviews against the Code. Mississauga’s own permit list also takes in a sink, tub, toilet or shower that is added, removed or relocated, so a moved fixture belongs on the plumbing drawing.
Usually not. CVC permits are for development activity in hazard areas such as valleys, wetlands and flood-prone shorelines, and Ontario defines that around grading, fill and building or enlarging structures. Ducts and wiring inside a Mississauga house are none of those. An addition or a detached unit on a regulated lot is, and its CVC permit comes before the mechanical design is final.
Yes. We take on mechanical & electrical across Mississauga, including Port Credit and Streetsville, within an hour of our Richmond Hill office. The first consultation is free, by phone or on site.
Three things to start: architectural drawings, or our own permit set if we are preparing it; insulation, window and door specifications, if known; and photos of the mechanical room, existing ducts and the electrical panel. Send those and we tell you what the City of Mississauga Planning and Building Department will ask for before we quote.
That depends on what else is happening. When the furnace comes with an addition, a basement unit or a rebuild, it goes on that permit, and the heating has to be sized from a calculated load that the Planning and Building Department reviews. On its own, a replacement is a question we put to the department for your address before the installer is booked, and if it needs a permit, our drawings go in through ePlans.
It could. Under By-law 0021-2022 a private tree 15 cm or more across needs a permit before it is injured, not only before it is cut, and a trench through the roots for a gas line, refrigerant lines or a feed to a garden suite can injure it. We route lines and set outdoor units clear of the surveyed trees where the layout allows, and flag any that cannot be avoided before the set goes to the Planning and Building Department.
Yes, and a duct layout too if the comment asks for one. Our designer works from the architect’s floor plans under our BCIN HVAC qualification. The new sheets go into the existing ePlans file, not a new one, and the Planning and Building Department picks the review up from there.
Yes. A garden suite is a separate building, so it gets its own heat-loss calculation and a system sized for it alone. Mississauga allows one per lot, alongside one unit inside the house, and that inside unit’s design has to account for what the existing furnace and ducts already serve. We file the two designs together in one ePlans submission.
Yes. Our fire-safety drawings cover the alarm layout, emergency lighting, exit signs and sprinklers, and the mechanical sheets cover the ventilation and plumbing the new occupancy needs. In Mississauga we check Zoning By-law 0225-2007 for the use before any of that is designed, then file the systems with the change of use application in ePlans.
Drain, waste and vent layouts and water supply layouts for the new kitchen and bathroom, showing where they meet the house’s existing lines and how the water service feeds both units. A garden suite, the other way to add a unit on a Mississauga lot, needs its own runs from the yard, drawn on the same sheets. The plumbing goes to the Planning and Building Department in the same ePlans set as the architecture.
Searched & answered
Short answers to the mechanical & electrical questions people search most, and the broader topics they lead to.
Not covered here? Book a free consultationA room-by-room calculation of the heat a building loses in winter and gains in summer. Ontario’s 2024 Building Code requires a house’s heating system to be sized from a calculated heating load, using good engineering practice such as CSA F280, and the same applies to cooling where it is installed. Fine Engineering’s calculations set the equipment size and the airflow to each room.
The size comes from a heat-loss calculation, not from the square footage alone: insulation, windows, air leakage and orientation change the answer by a lot. Oversized furnaces short-cycle and cost more to run. Fine Engineering calculates the load and specifies the equipment for the permit.
From the heat-loss and heat-gain figures. Each room’s load sets the airflow it needs, the airflow sets the size of each branch and trunk, and the whole layout has to work within what the furnace or air handler’s fan can push. The runs are then routed around joists and beams. Fine Engineering draws the duct layout and sizing that go in with the permit.
A total of what a house or unit will draw: heating, cooking, laundry and any new load such as an EV charger or a heat pump. Worked out under the Ontario Electrical Safety Code, it shows whether the existing service and panel can carry the work or need upgrading. Fine Engineering prepares it for second units, additions and commercial fit-outs.
Yes, an electrical permit from the Electrical Safety Authority, which also inspects the installation. A building permit is not usually required for the charger itself. If the panel is near capacity, the service may need upgrading first, and a load calculation from Fine Engineering shows whether it can carry the charger.
Drain, waste and vent: the piping that carries wastewater away and lets air into the system so traps hold their seal. Every fixture needs a properly sized drain and a vent path, and the layout is shown on the plumbing drawing the city reviews. Fine Engineering designs DWV layouts for houses, second units and commercial fit-outs.
Good to know
In Mississauga the reviewer is the City of Mississauga Planning and Building Department. Every Mississauga lot sets its own terms: the age of the mechanical room, the panel’s spare capacity and whether the ducts can reach a second unit decide the design before equipment is chosen.
We walk the site with the survey on a scheduled visit before anything is drawn, then file the mechanical & electrical package to the City of Mississauga Planning and Building Department’s own checklist.
Mississauga’s housing runs to historic village cores at Port Credit and Streetsville within 1960s to 1990s suburban neighbourhoods, with teardown rebuilds on older lots, so an older house and a newer one a few streets apart can need quite different mechanical work. We size the equipment and check the panel for the house in front of us, from its own heat loss, rather than from its age or the last furnace’s rating.
The Electrical Safety Authority issues the permit for a Mississauga second unit’s wiring and inspects it, separately from ePlans, while the Planning and Building Department reviews heating, ventilation and plumbing with the building permit. We work out the electrical load for the house and the new unit before the panel schedule is drawn, since a second kitchen can push an older service past its capacity.
A new house on a Mississauga teardown lot is held to the 2024 Building Code’s energy rules: it has to beat the 2012 Code’s efficiency levels by at least 15 per cent or follow Supplementary Standard SB-12. That choice shapes the heat-loss calculation, the ventilation and the equipment, so we settle the compliance path with you before sizing anything for the Planning and Building Department.
Contact us
Send us the drawings and we’ll tell you what the city will want for mechanical and electrical, on a free first call.
First consultation free(416) 990-9179