Canada's Building Code Is Changing — Fast

The 2020 National Building Code of Canada introduced a tiered energy performance pathway for new buildings, and provincial adoption is accelerating. By 2030, many jurisdictions are expected to require Tier 3 or Tier 4 performance — significantly beyond current baseline standards. For building owners and developers, this is not a distant concern. Projects designed today will be built and occupied for decades. Getting the energy strategy right from the outset is far less expensive than retrofitting later.

What "Net-Zero Ready" Actually Means

A net-zero ready building is designed and constructed so that it can achieve net-zero energy performance — either immediately or through a simple future retrofit, typically the addition of on-site renewable generation. The key distinction is that net-zero readiness is primarily about the building envelope and mechanical systems. A tight, well-insulated envelope reduces heating and cooling loads. High-performance mechanical systems — heat pumps, energy recovery ventilators, demand-controlled ventilation — deliver those reduced loads efficiently.

The Role of Energy Modelling

Meeting the upper tiers of the National Energy Code for Buildings or Part 9 energy requirements requires more than rule-of-thumb design. It requires validated energy modelling — typically using software such as EnergyPlus, eQUEST, or IES-VE — to demonstrate performance compliance and optimize system selection. Early-stage modelling, integrated with architectural and mechanical design decisions, produces far better outcomes than modelling performed as a compliance exercise late in design development.

Electrification Is Now a Design Assumption

Most provincial climate plans and municipal bylaws are moving toward restricting or eliminating new natural gas connections in buildings. British Columbia, Quebec, and several Ontario municipalities are already there or nearly so. Designing mechanical systems that assume electrification — heat pumps for space conditioning and domestic hot water, induction cooking, electric vehicle charging infrastructure — is not a fringe decision. It is increasingly the responsible default for any building intended to operate beyond a five-year horizon.

What This Means for Your Next Project

If you are at the early stages of a development, the most cost-effective time to account for net-zero performance targets is now — before structural and mechanical systems are fixed. Your engineering team should be running energy models in parallel with schematic design, identifying where envelope investments yield the highest returns in operating cost reduction, and sizing mechanical systems for an electrified future. This is not additional scope; it is what good engineering looks like in 2025 and beyond.

Design Works Engineering's energy modelling team works across all building types and provinces, integrating performance analysis directly into mechanical and electrical design. Contact us to discuss how we can support your project's energy strategy.