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Building Code Requirements

 

2012 ONTARIO BUILDING CODE

Buildings need to be more energy efficient and you need an occupancy permit.


Energy Efficiency

a) EnerGuide Rating of 80 or more when evaluated in accordance with the System. The house design is analyzed for energy efficiency and improved if necessary. The new house should be 80% of maximum energy efficiency possible. Once the house has been built, a third-party energy advisor performs a walk-through review of the house and a blower door test to assess air leakage. The builder is given a homeowner report and the house's energy efficiency EnerGuide for New Homes (EGNH) rating label to supply to the homeowner upon sale of the house. The homeowner report and label confirm and show the energy efficiency of the house.

 


Construction
EGNH Rating
Houses with moderate air leakage and insulation in all exterior wall cavities 55-64
New house built to pre 2012 building code standards 65-69
Typical new house with some energy-efficiency improvements 70–74
Significantly upgraded energy-efficient new house 75–79
Highly energy-efficient new house (e.g. R-2000) 80–90
Air tight house requiring little or no purchased energy (e.g. solar/wind powered) 91–100

 

code scale graphic

code formula

 

Estimated Total Energy Consumption = Space heating consumption + Hot water and Appliances consumption

Or

b) Conform to Supplementary Standard SB-12 (prescriptive and performance based options)

  • Minimum insulation performance of building envelope
  • Minimum space heating equipment performance
  • Minimum air leakage performance
  • Or meet specifications of EnergyStar for New Homes (January 2011 version)
  • Additional alternative compliance paths that permit slightly lower levels of wall insulation as long as those levels are compensated for with other energy efficient building elements.
  • Minimum Air Barrier requirements

Other buildings (with some exceptions) must conform to Supplementary Standard SB-10 by exceeding the energy efficiency level of the 1997 Model National Energy Code for Buildings by 25 per cent.


Occupancy Permits for Certain New Residential Buildings

An inspection is to be made and a permit to be issued, prior to people occupying certain new residential buildings confirming the structure, envelope, plumbing, mechanical, wiring and fire safety are complete.

These requirements will not apply to existing buildings, or parts of existing buildings, that have been subject to renovation, including an extension to the building, a material alteration or repair.

If you are renovating such as adding an addition, refer to:

2.1.1.10 – Additions

An addition to an existing building is to comply with

a) Compliance package listed in Table 2.1.1.2.B.

OR

b) Thermal performance requirements in Table 2.1.1.10.

Note: 2.1.1.10.(2) applies only to one-storey sunroom additions with doors/windows/wall with a maximum U-Value of 1.6 and roof glazing/skylights with a maximum U-Value of 2.6.


thermal performance table   

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